Уточнить поиск
Результаты 61-70 из 108
Yield and quality of strawberries when applying fertilizers Полный текст
2021
T. E. Ivanova | E. V. Lekomtseva | T. N. Tutova | E. V. Sokolova | L. A. Nesmelova
Relevance. One of the most important elements of the technology of cultivation of strawberries for increasing productivity and improving the quality of berries is the use of fertilizers that can regulate the growth, development, yield and quality of products.Methods. During 2016-2018, the impact of pre-planting application of complex mineral fertilizers on the yield and quality of strawberries in the Udmurt Republic was studied. The analysis of meteorological conditions during the growing season of the crop according to the research results is carried out.Results. The results of the use of complex fertilizers Azofoska, Perm-yagodnoye and Fusco-yagodnoye on garden strawberries when grown in the conditions of the Udmurt Republic are presented. It was found that the use of these fertilizers in comparison with the control (Azofoska) contributes to an increase in yield and has a positive effect on the quality of berries. The aftereffect of the studied fertilizers on the second and third year of fruiting of wild strawberries is noted. According to the results of research, the highest yield of berries of the garden strawberry was obtained in 2016 in the first year of fruiting when applying Chamfer-berry (1.33 kg/m2 ). The pre-planting application of the FaskoYagodnoye fertilizer provided a reliable increase in yield at all times of berry harvesting, and on average for three years by 0.13 kg/m2 with an NSR of 0.04 kg/m2 . The content of dry matter, water-soluble sugars and vitamin C in the berries corresponded to the characteristics of the Darenka variety and to a greater extent depended on the meteorological conditions of the growing season of strawberries.
Показать больше [+] Меньше [-]Comparative evaluation of collection varieties of winter garlic by yield Полный текст
2021
V. V. Skorina | I. G. Kakhtsiankova
Relevance. To produce garlic for use both in the domestic and foreign markets, there is no required number of high-yielding varieties with large onions and a small number of cloves, as well as resistant to new growing conditions. In selection with a culture of garlic, in addition to zoned varieties, it is advisable to use local improved forms, however, the morphobiological characteristics of garlic can change depending on the growing conditions and, as a result, plants can die, reduce resistance, productivity and quality indicators, which depend on the breeding and genetic characteristics of the variety.Methods. The research was carried out on the experimental field of the Department of Horticulture, UO BSAA. The 67 samples of winter garlic were studied. The collection material consisted of varieties and clones that were selected from six regions of Belarus. The Belovezhsky variety was used as a control.Results. According to the results of the studies, the best in terms of bulb weight, number of cloves in the bulb, clove weight and yield were selected samples – AM1–18, OR3–18, OP5–18, MM1–18, UG–18, ЮM1–18, 2000–18, MГ1–18, DM–18, MГ4–18, varieties Agaton, Antonik, Gorets, Soyuz, Junior.
Показать больше [+] Меньше [-]Results and prospects for the development of scientific research in FSBSI FSVC Полный текст
2021
V. F. Pivovarov | A. V. Soldatenko | O. N. Pyshnaya | L. K. Gurkina
Results and prospects for the development of scientific research in FSBSI FSVC Полный текст
2021
V. F. Pivovarov | A. V. Soldatenko | O. N. Pyshnaya | L. K. Gurkina
The article reflects the issues of the current state of scientific research at the FSBSI FSVC, shows the directions and prospects for the development of selection and seed production of vegetable crops. The main mission of the selection and seed-growing work of the FSVC is the creation and reproduction of varieties and hybrids of vegetable and melon crops of a new generation, characterized by resistance to abiotic and biotic stressors, high productivity and product quality. One of the main ways to increase the efficiency of the breeding process is the use of modern methods of biotechnology and molecular genetics, which make it possible to obtain new genotypes and reduce the time of breeding. Success has been achieved in the creation of homozygous lines of cabbage, squash, cucumber, carrots. For the first time, it was possible to complete a full cycle of obtaining doubled radish haploids in microspore culture in vitro. The institution pays special attention to immunological research on the resistance of crops and new varieties to diseases, as well as protecting plants from pests and diseases. Phytosanitary monitoring, assessment and selection of resistant genotypes are carried every years. One of the important theoretical and practical problems solved at the institution is the development of environmentally friendly products based on preparations obtained from plants with a high content of biologically active compounds with adaptogenic properties. In the center, a new direction of research in traditional breeding has received significant development - the creation of varieties of vegetable plants with an increased content of biologically active substances and antioxidants, on the basis of which functional products are created. The persistence of modern varieties and hybrids of table carrots, depending on the biochemical composition, has been studied. Methods for enriching vegetable plants with micronutrients are being developed. A large amount of scientific research is being carried out on the development of technologies for the cultivation of new varieties and hybrids, as well as technologies for their seed production. At the branches located in different soil and climatic conditions, hospitals were established to study the interaction of factors controlling soil fertility and the productivity of vegetable crops in agrocenoses (crop rotation, soil treatment systems, fertilizers and plant protection). In general, at the FSBSI FSVC, all research is aimed at developing and improving methods in breeding and seed production of vegetable crops, creating new breeding achievements and developing varietal technologies for their cultivation.
Показать больше [+] Меньше [-]Итоги и перспективы развития научных исследований ФГБНУ ФНЦО в год 100-летнего юбилея | Results and prospects for the development of scientific research in FSBSI FSVC Полный текст
2021
Pivovarov, V.F. | Soldatenko, A.V. | Pyshnaya, O.N. | Gurkina, L.K., Federal Research Center of Vegetable Crop Selection, Moscow Region (Russian Federation)
Federal State Budgetary Scientific Institution 'Federal Scientific Vegetable Center' (FSBSI FSVC) is the leader in the field of selection and seed production of vegetable crops. The main mission of the selection and seed-growing work of the FSVC is the creation and reproduction of varieties and hybrids of vegetable and melon crops of a new generation, characterized by resistance to both abiotic and biotic stressors, high productivity and product quality. Success has been achieved in the creation of homozygous lines of cabbage, squash, cucumber, carrots. For the first time, it was possible to complete a full cycle of obtaining doubled radish haploids in microspore culture in vitro. The immunological research on the resistance of crops and new varieties to diseases are carried out, as well as plant pest and disease control methods are developed. Phytosanitary monitoring, assessment and selection of resistant genotypes are carried every years. The environmentally friendly products based on preparations obtained from plants with a high content of biologically active compounds having adaptogenic properties are developed. A new research direction in the center is the creation of vegetable crop varieties having increased content of biologically active substances and antioxidants, on the basis of which functional products are created. The keeping quality of modern varieties and hybrids of table carrots depending on the biochemical composition has been studied. Methods for enriching vegetable plants with micronutrients are being developed. The technologies for the cultivation and seed production of new varieties and hybrids are created. There were established the branches located in different soil and climatic conditions to study the interaction of factors controlling soil fertility and the productivity of vegetable crops in agrocoenoses (crop rotation; tillage, fertilizer application and plant protection systems). In general, all work of the FSBSI FSVC is aimed at developing and improving methods in breeding and seed production of vegetable crops, creating new breeding achievements and developing varietal technologies for their cultivation. | Федеральное государственное бюджетной научное учреждение 'Федеральный научный центр овощеводства' (ФГБНУ ФНЦО) – лидер в области селекции и семеноводства овощных культур. Основная цель селекционно-семеноводческой работы этой организации – создание и размножение сортов и гибридов овощебахчевых культур нового поколения, отличающихся устойчивостью к абиотическим и биотическим стрессорам, высокой продуктивностью и качеством продукции. Успехи достигнуты в создании гомозиготных линий капусты, кабачка, огурца, моркови. Впервые удалось завершить полный цикл получения удвоенных гаплоидов редиса в культуре микроспор in vitrо. Ведутся иммунологические исследования устойчивости культур и новых сортов к заболеваниям, разрабатываются методы защиты растений от вредителей и болезней. Ежегодно проводится фитосанитарный мониторинг, оценка и отбор устойчивых генотипов. Идет разработка экологически безопасных средств на основе препаратов, полученных из растений с высоким содержанием биологически активных соединений-адаптогенов. Новое направление исследований – создание сортов овощных растений с повышенным содержанием биологически активных веществ и антиоксидантов, для производства продуктов функционального назначения. Изучается хранимоспособность современных сортов и гибридов моркови столовой в зависимости от биохимического состава. Разрабатываются способы обогащения овощных культур микронутриентами. Создаются технологии возделывания и семеноводства новых сортов и гибридов. На филиалах ФГБНУ ФНЦО, расположенных в различных почвенно-климатических условиях, заложены стационары по изучению взаимодействия факторов управления плодородием почв и продуктивностью овощных культур в агроценозах (севооборот, системы обработки почв, удобрений и защиты растений). В целом, исследования ФГБНУ ФНЦО направлены на разработку и усовершенствование приемов в селекции и семеноводстве овощных культур, создание новых селекционных достижений и разработку сортовых технологий их возделывания.
Показать больше [+] Меньше [-]Development of technology elements for growing leek seedlings for open ground in the Non-Chernozem zone Полный текст
2021
V. I. Terekhova | A. V. Konstantinovich | M. E. Dyikanova | M. V. Vorobiev | V. D. Bogdanova
Relevance and methods. Leek is one of the most promising onion crops for industrial cultivation in the Non-Chernozem zone, which has medicinal properties and high nutritional value. The results of studying the technological features of leek cultivation in the open ground of the Moscow region are presented. The studies were carried out in 2019-2020 on the territory of the “Vegetable Experimental Station named after V.I. Edelstein". We studied the influence of the feeding area of leek seedlings on the biometric parameters of plants and the quality of products. The object of the study is the variety Karantansky, experimental options: 1) seedling feeding area – 6 cm2 (control), 2) seedling feeding area – 8 cm2 , 3) seedling feeding area – 10 cm2 . The objects of research to study the content of ascorbic acid were leek varieties: late-ripening – Karantansky (standard), Bandit, Dobry Molodets, mid-ripening – Columbus, Hobot slona.Results. It is noted that the feeding area during the seedling period does not significantly affect the biometric parameters of leek plants: leaf area, plant weight, leek pseudostems diameter. Therefore, during the period of growing seedlings, from the point of view of rational use of the area in the seedling department, it is recommended to use the minimum feeding area – 6 cm2 . It was also found that the studied varieties accumulate ascorbic acid in different ways in various plant organs. The maximum content of ascorbic acid was noted in the leek pseudostems of the control late-ripening variety Karantanskiy – 23.6 mg%. The minimum values are for Dobry Molodets (11.8 mg%) and Hobot Slona (11.9 mg%).
Показать больше [+] Меньше [-]Study of collection samples of table watermel with unconventional pulp color Полный текст
2021
N. G. Baybakova | G. V. Varivoda
Relevance. The study of the collection is one of the main sources of replenishing the source material for the breeding process. The presence of the necessary genetic traits can speed up the breeding process. Therefore, at the Bykovskaya melon breeding experimental station, the genetic diversity of melon plants is assessed and promising samples are selected for use in breeding.Materials and methods. The object of research was samples of table watermelon with an unconventional color of the pulp. The aim of the work is to study and isolate the source material of watermelon for use in the breeding process to create new varieties and hybrids of melon crops. In the course of the study, 12 varieties of table watermelon were identified from 33 varieties of the collection nursery, which are sources of economically valuable traits. The selection was carried out according to the yield, the rate of entry into fruiting, taste, color of the pulp.Results. In the course of the research, the obtained samples of table watermelon with an unconventional color of the pulp were evaluated according to a set of economic characteristics in comparison with the standards: Zenith and Sinchevsky. The analysis of the tested samples made it possible to identify 12 samples by economically valuable traits: 3 samples by early maturity and taste: White sugar lump, White wonder, Golden revenge F1; 7 samples with a high dry matter content, in terms of yield and large fruit: Moon and stars yellowflesh, Sweet Siberian, Orangeglo, Daisy, Clay county yellow meat, Mountain sweet yellow, Tendergold; 2 samples for color and pulp consistency: Early moon beane Bakerlneek, Tenderweet orange. The selected samples meet the modern requirements of the industrial melon growing industry, resistant to stress factors of the environment, good taste and consumer properties.Findings. The obtained experimental data will be used to create a genetic collection of watermelon according to the traits that determine the economic value of the gene pool for further use in the breeding process.
Показать больше [+] Меньше [-]Comparative characteristics of the biochemical composition of VIR eggplant collection in a greenhouse Полный текст
2021
I. V. Gashkova | A. E. Solovieva | A. B. Kurina
Comparative characteristics of the biochemical composition of VIR eggplant collection in a greenhouse Полный текст
2021
I. V. Gashkova | A. E. Solovieva | A. B. Kurina
Relevance. The presence of valuable biologically active substances, carbohydrates, organic acids and others in the eggplant fruits makes the culture one of the vegetables with the highest antioxidant activity. The VIR collection of eggplant includes 830 accessions from 70 countries of the world. The study of new acquisitions in the VIR collection presupposes a comprehensive assessment of the received material according to morphological, biological and economically valuable characteristics. The main objective of the study was to assess the variability of the biochemical parameters of egg-plant fruits in technical ripeness; as well as determination of the best accessions by the chemical composition of fruits and the content of biologically active substances.Materials and methods. The study of 19 accessions of eggplant accessions was carried out in 2020 in a winter greenhouse in Pushkin and Pavlovsk Laboratories of VIR (St. Petersburg). The morphological description of the accessions and the assessment for biological and economically valuable traits were carried out in accordance with the methodological guidelines and the VIR classifier. Biochemical analysis was carried out in the Department of Biochemistry and Molecular Biology of VIR in the phase of technical ripeness of fruits in terms of: dry matter content, sugars, total acidity, ascorbic acid, pigments and anthocyanins.Results. As a result of this study, the amplitude of variability in the content of dry matter (6.44- 8.68%), sugars (1.78-3.72%), ascorbic acid (5.92-21.08 mg/100 g), titrated acidity (0.10-0.31%), chlorophylls (0.52-15.13 mg/100 g), carotenoids (1.19-6.99 mg/100 g), β-carotene (0.11-0.52 mg/100 g) and anthocyanins (12.94-1031.40 mg/100 g) in eggplant fruits. Accessions with a high content of biologically active substances in fruits in technical ripeness were identified: Russian hybrids Bourgeois F1, Azhur F1; local accessions from Armenia: k-3156, k-3159, k-3161.
Показать больше [+] Меньше [-]Comparative characteristics of the biochemical composition of VIR eggplant collection in a greenhouse | Сравнительная характеристика биохимического состава образцов баклажана коллекции ВИР в защищенном грунте Полный текст
2021
Gashkova, I.V. | Solov'eva, A.E. | Kurina, A.B., The N.I. Vavilov All-Russia Inst. of Plant Genetic Resources, St. Petersburg (Russian Federation)
The presence of valuable biologically active substances, carbohydrates, organic acids and others in the eggplant fruits makes the culture one of the vegetables with the highest antioxidant activity. The collection of eggplant maintained by the All-Union Research Institute of Plant Breeding (VIR) includes 830 accessions from 70 countries of the world. The study of new acquisitions in the VIR collection presupposes a comprehensive assessment of the received material according to morphological, biological and economically valuable characteristics. The main objective of the study was to assess the variability of the biochemical parameters of egg-plant fruits in technical ripeness; as well as determination of the best accessions by the chemical composition of fruits and the content of biologically active substances. The study of 19 accessions of eggplant accessions was carried out in 2020 in a winter greenhouse. The morphological description of the accessions and the assessment for biological and economically valuable traits were carried out in accordance with the methodological guidelines and the VIR classifier. Biochemical analysis was carried out in the phase of technical ripeness of fruits in terms of: dry matter content, sugars, total acidity, ascorbic acid, pigments and anthocyanins. As a result, the amplitude of variability was determined in the content of dry matter (6.44- 8.68%), sugars (1.78-3.72%), ascorbic acid (5.92-21.08 mg/100 g), titrated acidity (0.10-0.31%), chlorophylls (0.52-15.13 mg/100 g), carotenoids (1.19-6.99 mg/100 g), beta-carotene (0.11-0.52 mg/100 g) and anthocyanins (12.94-1031.40 mg/100 g) in eggplant fruits of the studied accessions. Accessions with a high content of biologically active substances in fruits in technical ripeness were identified: Russian hybrids Bourgeois F1, Azhur F1; local accessions from Armenia: k-3156, k-3159, k-3161. | Наличие в плодах баклажана ценных биологически активных веществ, углеводов, органических кислот и т.д. выводит культуру в число овощей, обладающих наибольшей антиоксидантной активностью. Коллекция баклажана, которую поддерживает Всероссийский институт генетических ресурсов растений (ВИР), включает 830 образцов из 70 стран мира. Изучение новых поступлений в коллекцию ВИР предполагает комплексную оценку поступившего материала по морфологическим, биологическим и хозяйственно ценным признакам. Проведена оценка изменчивости биохимических показателей плодов баклажана в фазе технической спелости; определены образцы, лучшие по химическому составу плодов и содержанию биологически активных веществ. Изучение 19 образцов баклажана проводили в 2020 г. в условиях зимней остекленной стеллажной теплицы (Санкт-Петербург). Морфологическое описание образцов и оценку по биологическим и хозяйственно ценным признакам проводили в соответствии с методическими указаниями и классификатором ВИР. Биохимический анализ проводили в фазе технической спелости плодов по следующим показателям: содержание сухого вещества, сахаров, общей кислотности, аскорбиновой кислоты, пигменты и антоцианы. В результате определена амплитуда изменчивости содержания сухих веществ (6,44-8,68%), сахаров (1,78-3,72%), аскорбиновой кислоты (5,92-21,08 мг/100 г), титруемой кислотности (0,10-0,31%), хлорофиллов (0,52-15,13 мг/100 г), каротиноидов (1,19-6,99 мг/100 г), бета-каротина (0,11-0,52 мг/100 г) и антоцианов (12,94-1031,40 мг/100 г) в плодах изученных образцов баклажана. Выделены образцы с высоким содержанием биологически активных веществ в плодах в технической спелости: российские гибриды Буржуй F1, Ажур F1; местные образцы из Армении: к-3156, к-3159, к-3161.
Показать больше [+] Меньше [-]Tomato hybrids recommended for growing in photoculture conditions Полный текст
2021
V. G. Korol
Relevance. The most important influence on the yield, the timing of growing vegetables in greenhouses and the cost of the resulting crop, in addition to the arrival of solar radiation, is exerted by the presence of a system of artificial lighting in greenhouses and its capacity.It is no exaggeration to say that today artificial lighting in greenhouses is more effective than natural lighting. So, to obtain one kilogram of vegetables using artificial lighting, it is necessary to spend 4.5-5.0 thousand J/cm2, and in the case of natural lighting: 5.0-6.5 thousand J/cm2. This is due to the fact that when using artificial lighting in the greenhouse, we create the most comfortable growing conditions for the plants. Of course, every culture, every hybrid requires its own illumination parameters, so you should not try to formulate what the ideal artificial lighting will be. Proper lighting means getting the maximum yield from your crops at the lowest cost. An increase in the productivity of plants when grown under photoculture conditions occurs not only due to an increase in the lighting power per unit area of greenhouses, but also due to correctly selected hybrids. The cultivated hybrid is one of the most important criteria for both increasing its productivity and improving the quality of the fruit. But not all tomato hybrids recommended by breeding companies for growing under artificial lighting are ideal for such conditions.Methods. The methods used in agronomic science were used. The information base of the research was made up of reference materials from specialized publications on the subject under study (catalogs of breeding companies); materials received from participants in the greenhouse vegetable market (breeding companies, greenhouse plants); own research, articles and reviews in specialized journals.Results. Correctly selected tomato hybrids provide a significant increase in productivity in greenhouses, an improvement in fruit quality and a balanced cultivation technology under these conditions. An assortment of recommended tomato hybrids for growing in photoculture conditions is presented, an analysis of their advantages and disadvantages is made, and the main requirements for hybrids for these conditions are formulated.
Показать больше [+] Меньше [-]Evaluation of the responsiveness of tulips to mineral fertilizers during early spring forcing in protected ground conditions Полный текст
2021
I. N. Voronchikhina | O. A. Shchuklina | V. V. Voronchikhin | A. D. Alenicheva | I. N. Klimenkova | N. N. Langaeva | V. E. Kvitko | S. V. Zavgorodny
Evaluation of the responsiveness of tulips to mineral fertilizers during early spring forcing in protected ground conditions Полный текст
2021
I. N. Voronchikhina | O. A. Shchuklina | V. V. Voronchikhin | A. D. Alenicheva | I. N. Klimenkova | N. N. Langaeva | V. E. Kvitko | S. V. Zavgorodny
Relevance. When forcing tulips in the early spring period in conditions of protected soil, the effectiveness of fertilizers has not been sufficiently studied. Manufacturers and suppliers of planting material do not give clear recommendations on the timing and doses of the use of mineral fertilizers in the distillation process.Material and methods. The object of study was 6 varieties of tulips of the Dutch selection of the mid-early flowering period. In the experiment, a "9-degree distillation technology"was used. For mineral fertilizing of tulips, a solution of calcium nitrate – Ca(NO3)2 was used in concentrations of 0.1% and 0,2%. The repetition of the experience is fourfold. To assess the effect of fertilizing on the growth and development of tulips, the dynamics of changes in biomorphological indicators was studied: the height of the plants, the diameter of the flower, the mass of cut flowers, as well as the output of commercial products. Results. It was found that the use of calcium nitrate fertilization at a concentration of 0,2% at the early stages of plant development contributes to the formation of a larger cut in the studied varieties, characterized by a high strong stem exceeding the control by 3,83-43,8%, the formation of large peduncles with a diameter of 3,24-5,85 cm and an increase in the yield of marketable products reaching 98%. The profitability of this variant of applying calcium nitrate fertilizing is on average 42% for varieties.Results. It was found that the use of calcium nitrate fertilization at a concentration of 0,2% at the early stages of plant development contributes to the formation of a larger cut in the studied varieties, characterized by a high strong stem exceeding the control by 3,83- 43,8%, the formation of large peduncles with a diameter of 3,24-5,85 cm and an increase in the yield of marketable products reaching 98%. The profitability of this variant of applying calcium nitrate fertilizing is on average 42% for varieties.
Показать больше [+] Меньше [-]Evaluation of the responsiveness of tulips to mineral fertilizers during early spring forcing in protected ground conditions | Оценка отзывчивости тюльпанов на минеральные удобрения при ранневесенней выгонке в условиях защищенного грунта Полный текст
2021
Voronchikhina, I.N. | Shchuklina, O.A. | Voronchikhin, V.V. | Alenicheva, A.D. | Klimenkova, I.N. | Langaeva, N.N. | Kvitko, V.E. | Zavgorodnij, S.V., Russian Academy of Sciences, Moscow (Russian Federation). The N.V. Tsitsin Central Botanical Garden
При выгонке тюльпанов в ранневесенний период в условиях защищенного грунта эффективность удобрений недостаточно изучена. Производители и поставщики посадочного материала не дают четких рекомендаций по срокам и дозам применения минеральных удобрений в процессе выгонки. Объектом изучения послужили 6 сортов тюльпанов нидерландской селекции среднего срока цветения. В опыте применяли т.н. 9- градусную технологию выгонки. Высадку луковиц проводили в начале декабря, в конце января температуру в теплице повысили до 18 град. С и провели первую подкормку. Для минеральной подкормки тюльпанов использовали раствор нитрата кальция Ca(NO3)2 в концентрациях 0,1% (от 1 до 3 раз) и 0,2% (только 1-кратно). Повторность опыта четырехкратная. Срезать продукцию начали с середины февраля. Для оценки влияния подкормок на рост и развитие тюльпанов была изучена динамика изменения следующих биоморфологических показателей: высота растений, диаметр цветка, масса срезанных цветов, выход товарной продукции. Выявлено, что применение подкормки нитратом кальция в концентрации 0,2% на ранних этапах развития растений способствует формированию у изучаемых сортов более крупной срезки, отличающейся высоким прочным стеблем, превышающим контроль по длине на 3,83-43,8%, образованию крупных цветоносов диаметром 3,24-5,85 см и повышению выхода товарной продукции, достигающего 98%. Рентабельность данного варианта применения подкормки нитратом кальция составила в среднем по сортам 42% против 31% в контроле. Стабильно высокий выход товарной продукции был отмечен у сортов Roman Empire (93-98%), Strong Gold (96-98%) и Bullit (87-96%). | When forcing tulips in the early spring period in conditions of protected soil, the effectiveness of fertilizers has not been sufficiently studied. Manufacturers and suppliers of planting material do not give clear recommendations on the timing and doses of the use of mineral fertilizers in the distillation process. The object of study was 6 varieties of tulips of the Dutch selection of the mid-early flowering period. In the experiment, so called '9-degree distillation technology' was used. Bulbs were planted in early December, in late January the temperature in greenhouse was elevated to 16 deg. C and the first top-dressing was performed. For mineral fertilizing of tulips, a solution of calcium nitrate – Ca(NO3)2 was used in concentrations of 0.1% (from 1 to 3 times) and 0.2% (only once). The repetition of the experience is fourfold. The products were started cutting from the middle of February. To assess the effect of fertilizing on the growth and development of tulips, the dynamics of changes in the following biomorphological indicators was studied: the height of the plants, the diameter of the flower, the mass of cut flowers, as well as the output of commercial products. It was found that the use of calcium nitrate fertilization at a concentration of 0.2% at the early stages of plant development contributes to the formation of a larger cut in the studied varieties, characterized by a high strong stem exceeding the control by 3.83-43.8%, the formation of large peduncles with a diameter of 3.24-5.85 cm and an increase in the yield of marketable products reaching 98%. The profitability of this variant of applying calcium nitrate fertilizing is on average 42% for varieties. It was found that the use of calcium nitrate fertilization at a concentration of 0.2% at the early stages of plant development contributes to the formation of a larger cut in the studied varieties, characterized by a high strong stem exceeding the control in terms of length by 3.83- 43.8%, the formation of large peduncles with a diameter of 3.24-5.85 cm and an increase in the yield of marketable products reaching 98%. The profitability of this variant of applying calcium nitrate fertilizing was on average 42% against 31% in the control. A stably high commercial yield was recorded in the varieties Roman Empire (93-98%), Strong Gold (96-98%) and Bullit (87-96%).
Показать больше [+] Меньше [-]Use of ripening fruits in seed production of early-maturing varieties of melons and gourds in spring and summer sowing Полный текст
2021
V. Е. Lazko | O. V. Yakimova | E. N. Blagorodova
Relevance. In recent years, the price of seeds for melons and gourds of foreign selection has reoriented many agricultural producers to use seeds of domestic varieties. To provide agricultural producers with the required amount of seeds with high sowing rates, it is necessary to apply new technological methods that will allow using the biological potential of varieties and growing commercial volumes of seeds.Material and methods. The research was carried out at the selection and experimental site of the vegetable growing department in the "Federal Scientific Rice Centre " in 2017-2018. The object of research is a new promising variety of watermelon Yubilyar, and two early-ripening varieties of melon Tamanskay and Strelchanka. Sowing terms: spring – from mid-April to the end of the first decade of May, summer – the first and second decades of July. Summer sowing with drip irrigation. When harvesting melon and watermelon fruits, the selection intensity is 90% to obtain reproductive seeds RS-1.Results. It has been established that due to the climatic conditions of the Krasnodar Territory and the varietal characteristics of the melon varieties Tamanskaya, Strelchanka and the watermelon Yubilyar, a short growing season and a neutral reaction to changes in the length of the day, you can get two harvests of seeds in one season using summer sowing. It was noted that low air humidity prevented damage to plants by peronospora, anthracnose and powdery mildew, practically eliminating the need for protective measures. The selected ripe fruits for the selection of seeds by morphological characteristics corresponded to varietal characteristics. It has been established that the seed productivity of melon during summer sowing is higher due to better pollination. From one hectare received up to 97-138 kg of seeds. The use of ripening made it possible to carry out a one-time collection of watermelon and melon fruits.
Показать больше [+] Меньше [-]Physiological and biochemical evaluation of <i>Dioscorea alata L.</i> tubes cultivated on a modified ion-exchange substrate Полный текст
2021
A. N. Karasiova
Relevance. Currently, there is an increased interest in medicinal plants and preparations from natural herbal raw materials. This is due to the fact that biologically active substances of plants are more easily included in vital processes and do not cause side effects in humans. They can be products of primary (vitamins, fats, carbohydrates, proteins) and secondary biosynthesis (alkaloids, glycosides, tannins). Plants always contain a complex of biologically active substances, but one or several have a therapeutic and prophylactic effect. They are classified as active ingredients and are used in the production of medicines. Some of the promising medicinal plants are species from the genus Dioscorea, for example, Dioscorea alata L., containing a complex of biologically active substances. The aim of this work is to study the effect of humidity and the level of mineral nutrition in the root environment on the accumulation of biologically active compounds in the tubers of the dioscorea winged plant, adapted to in vivo conditions on an ion-exchange substrate of various chemical composition and agrophysical properties.Results. It has been shown that Dioscorea alata L. plants are able to accumulate the greatest amount of starch, dry matter, ascorbic acid, and flavonoids in an ion-exchange substrate modified with 1 g/l of the coarse hydrogel fraction. The data obtained can be used for practical purposes.
Показать больше [+] Меньше [-]