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Impact of Crop Rotation and Soil Tillage on the Severity of Winter Wheat Leaf Blotches
2021
Bankina, Biruta | Bimšteine, Gunita | Arhipova, Irina | Kaņeps, Jānis | Darguža, Madara
Reduced tillage is considered as one of the main tools to save biological diversity; however, it increases pressure of diseases, including wheat leaf blotches. The aim of present study was to clarify the impact of reduced soil tillage on the development of winter wheat leaf blotches in different schemes of crop rotation. The impact of different growing technologies on the severity of winter wheat disease was evaluated in a two-factorial experiment: A – soil tillage system, and B – different combinations of wheat pre-pre-crop and pre-crop (wheat, oilseed rape, barley and faba beans). Diseases were assessed every 10 days approximately and total impact of diseases was evaluated by calculating AUDPC (Area under Diseases Progress Curve). Tan spot, caused by Pyrenophora tritici-repentis was dominated disease over the long period, regardless of meteorological conditions. Development of Septoria leaf blotch was not influenced by neither crop rotation nor soil tillage. The level of tan spot was essentially higher after wheat, regardless of the pre-pre-crop. Reduced soil tillage promoted severity of tan spot. Ploughing mitigated effect of previous crops and differences in tan spot level were insignificant. Despite many positive effects of conservation tillage, increasing of fungicide treatment could be necessary, in conditions, when the tan spot is most devastating and widespread wheat disease.
显示更多 [+] 显示较少 [-]The Influence of Germinated Hull-less Barley Sordough Fermentation Conditions on the Microbiota Development
2021
Kl̦ava, Dace | Poisa, Iveta | Reidzane, Sanita | Kince, Tatjana | Kazantseva, Jekaterina | Traksmaa, Anna
Sourdough plays an important role in quality assurance, especially during developing wholegrain wheat bread products. The value of barley and hull-less barley grains is determined by the low lipid and high carbohydrate (starch and resistant starch) content, balanced amino acid profile, dietary fibre and phenolic compounds. During germination (24 h) the amount of sugar, amino acids and vitamins increase in the grains. Therefore, it could be optimal environment for microbiota growth in sourdough. The goal of the research was to find optimal technological parameters and to study microorganism growth dynamic during the fermentation of sourdough with germinated hull-less barley. The study was performed using three steps of fermentation, with different temperature and time parameters. At each step pH, dynamics of lactic acid bacteria (LAB), yeast-like fungi and total plate count (TPC) growth were determined using standard methods. The results of the study showed that the optimal fermentation conditions for the first stage are 48 h and 26 ± 1 °C, for the second stage 8 h and 26 ± 1 °C and for the third stage 20 h and 28 ± 1 °C. During fermentation of the sourdough, the pH 3.91 is reached, LAB 8.8 log₁₀ CFU g⁻¹, and the yeast-like fungi 8.7 log₁₀ CFU g⁻¹ was determined. Obtained data show that more than 80 bacteria and 50 microscopic fungal species were detected in hull-less barley flour, but after germination their diversity decreased and in the germinated hull-less barley sourdoughs dominated species were Pediococcus pentosaceus.
显示更多 [+] 显示较少 [-]Mechanism of Subsidies as an Element of State Support of Livestock Sector’s Development in Ukraine
2018
Shyian, Nataliia
The article presents results of the analysis of the cattle breeding industry’s development in Ukraine, the main trend of which was the decrease in the number of cattle, including the number of cows. A way to support livestock in the industry using the subsidy mechanism is suggested. This approach is aimed at increasing profitability of the cattle breeding industry output per 1 ha of fodder crops in the farm to profitability of barley production from 1 hectare in the area. The results of the proposed approach show that increasing milk profitability from 1 hectare of fodder crops to barley profitability from 1 hectare can be the basis for maintaining the livestock sector. The use of the livestock productivity factor (cow milk yield) in the proposed methodology makes farms more interested in increasing livestock productivity, which in turn increases the number of subsidies in the industry. In addition, an increase in fodder crops area in the farm has an ecological effect.
显示更多 [+] 显示较少 [-]Opportunities for Commercialization of High-Protein Barley: Case of New Variety ‘Kornelija’
2021
Auziņš, Alberts | Leimane, Ieva | Bleidere, Māra | Šterna, Vita | Krievin̦a, Agnese
The objective of the study was to define the main opportunities and challenges for the commercialization of the new hulless barley variety ‘Kornelija’ arising from its biochemical and farming profile, and to present the evaluation for the approach to a new high protein-based payment system. Unlike the agricultural profile with both advantages and disadvantages, the variety shows distinctive grain quality and biochemical properties. Although there is a growing demand for high-nutrition and plant-based protein foods, farmers are focused on yield potential, not the nutritional value of cereals. By paying for the grains of ‘Kornelija’ the price that is equal or higher than winter wheat referenced break-even price, food processors would both motivate farmers to grow the variety and obtain grains with much higher protein content, and significantly higher β-glucans content than winter wheat to produce functional foods for a price that is close to the price of winter wheat.
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