خيارات البحث
النتائج 241 - 250 من 471
Çorum Sulama Birliği’nde Su Yönetim Faaliyetlerinin Değerlendirilmesi النص الكامل
2023
Bayram Tanışıklı | Belgin Çakmak
Bu çalışma, Çorum Sulama Birliği’nin işletme ve bakım sorumluluğunu devraldığı sulama tesislerine yönelik 2019-2022 yıllarında yaptığı su yönetim faaliyetlerini değerlendirmek amacıyla yapılmıştır. Değerlendirmede su kullanım etkinliği ve tarımsal etkinlik performans göstergeleri kullanılmıştır. Değerlendirme sonucunda, su temin oranının ideal değerden daha düşük olduğu tespit edilmiş olup yükseltilmesi noktasında önerilerde bulunulmuştur. Ayrıca sulama oranının da artırılmasına ilişkin görüş ve öneriler dile getirilmiştir. Bununla beraber sulanan birim alana karşılık elde edilen gelir ve şebekeye alınan birim sulama suyuna karşılık elde edilen gelirde 2021 yılında 2020 yılına göre düşüş yaşandığı tespit edilmiş, sebebinin yaşanan kuraklıktan kaynaklı su azlığı sebebiyle yapılan kısıntılı sulama olduğu görülmüş ve konu ile ilgili önerilerde bulunulmuştur. Sonuç olarak Çorum Sulama Birliği’nin çalışma alanının konumu ve henüz uzun bir sulama yönetimi geçmişi olmaması gibi durumlar dikkate alındığında başarılı bir su yönetim performansı ortaya koyduğu görülmüştür.
اظهر المزيد [+] اقل [-]In Vitro Shoot Bioassay of Salt Tolerant International Potato Center Bred Potato Genotypes for Assessing Their Salinity Tolerance النص الكامل
2023
Md. Habibur Rahman | Deen Mohammad Deepo | Md Mazahul Islam | Md. Abul Bashar | Kamrun Nahar Sheuly | Khalid Syfullah | Md. Ekramul Hoque | Md Moshrraf Hossain Molla
The aim of the experiment is to study in vitro regeneration efficiency of international potato center (CIP)-bred salt tolerant potato genotypes under salt stress condition and to identify effective potato genotype(s) for saline belt areas of Bangladesh. An in vitro shoot bioassay of eight CIP-bred potato genotypes viz. CIP 102, CIP 106, CIP 111, CIP 117, CIP 124, BARI Alu 72 (CIP 139), and BARI Alu 73 (CIP 127) and CIP 136 were used. In this study, single node of these genotypes was cultured in MS media supplemented with 0, 80, 100, 120, 140 and 160 mM NaCl. Among the eight genotypes, BARI Alu 72 (CIP 139) showed the highest tolerance against salinity up to 160 mM NaCl (14.61 dS/m) for all studied parameters (except shoot and root initiation) with the highest plant height (9.67 cm), leaves number (13.60), nodes number (9.50), root length (6.50 cm), roots number (7.80), fresh weight of shoot (536.1 mg) and root (205.60 mg). On the other hand, CIP 106 was found the most susceptible genotype against salinity showing its highest salinity tolerance up to 120 mM NaCl (10.96 dS/m) with maximum plant height (7.17 cm), leaves number (12.50), nodes number (6.50), root length (7.50 cm), roots number (9.7), fresh weight of shoot (572.3 mg) and root (250 mg). The experiment's findings corroborated CIP's findings that they were salt tolerant, as well as recommended for their cultivation suitability in saline-affected area in Bangladesh.
اظهر المزيد [+] اقل [-]Association between Stearoyl CoA Desaturase (SCD) Gene Polymorphisms and Milk Production in Holstein Cattle Breed النص الكامل
2023
Mervan Bayraktar | Bahri Devrim Özcan
The SCD gene is a significant component of the leptin signaling pathway. The SCD gene has also been suggested as a candidate essential gene that can change the ratio of saturated to unsaturated fatty acids in milk and increase the amount of conjugated linoleic fatty acid, which is thought to have anti-cancer properties. The current research was carried out on Holstein cows to determine the association between SCD (Stearoyl-Coenzyme A Desaturase) gene polymorphism and total milk yield at 305 days (TMY305) and daily milk yield (DMY). The polymorphism in the SCD gene was identified using the PCR-RFLP technique and the SatI restriction enzyme for genotyping at SNP c.878T>C in the exon 5. The TT, TC, and CC genotype frequencies were 0.21, 0.50, and 0.29 respectively. While the allele frequencies of T and C were 0.46 and 0.54, respectively. According to the Chi-square test results, the SCD/c.878T>C distribution was in Hardy-Weinberg disequilibrium (P<0.05). Statistical analysis indicated a significant association between the SCD gene polymorphism and TMY305 (P<0.05). The TC genotypes showed a higher mean TMY305 compared to the TT and CC genotypes.
اظهر المزيد [+] اقل [-]Impact of Nutrient Profiles in Soils Amended Using Composts and Nano-Gel Water Accumulator for the Cultivation of Amaranthus Spinosus Grown in Them النص الكامل
2023
Richard Odunayo Akinyeye | Ezekiel Olumide Fadunmade | Abiodun Folasade Akinsola | Michael Ogunmola Oguntokun | Onome Ejeromedoghene | Olubunmi S. Shittu
The depletion of minerals in agricultural soils through subsistence farming has been a major food security challenge in many parts of the world. To curtail this problem, farmers use inorganic fertilizer to boost soil fertility even though it poses a lot of environmental challenges. In this research, an alternative route to soil nutrient amendment was explored via the use of compost and nano-gel water accumulator for blending different soil samples derived from rock side soil and spent farm soils blended in different ratios of 1:0, 1:1, 1:2, and 2:1using a suitable potting media for the greenhouse production of A. spinosus L. Physicochemical values, mineral, and heavy metals concentration were evaluated on the soil and compost samples while mineral, proximate, anti-nutrients and vitamins compositions were analyzed on A. spinosus L. grown on the soils. Data obtained were analyzed using analysis of variance (ANOVA) at a 95% confidence limit using SPSS 20.0 software. The properties of the prepared compost (PC) and commercial compost (CC) varied significantly (P
اظهر المزيد [+] اقل [-]IGFALS Gene Polymorphisms in Simmental Breed Cattle النص الكامل
2023
Rıdvan Genç | Zeynep Sönmez
Defining new genetic markers to understand the population structure and genetic basis of cattle breeds, increase production and improve yield quality is of great importance in the field of modern breeding technology. In this study, it was aimed to identify new molecular marker polymorphisms by using DNA sequence analysis method on the Insulin-Like Growth Factor-Binding Protein, Acıd-Labile Subunit (IGFALS) gene, which affects different yield characteristics in cattle. 20 samples from PCR products with various base sizes were randomly chosen for sequence analysis. The study revealed that the IGFALS gene’s first exon region, which is 492 bp long, contains the g.1368491 A/G polymorphism. A 463 bp length region of the second exon was where the g.1369854 -/G insertion was found.
اظهر المزيد [+] اقل [-]Performances of Transplanted Spring Rice Under Different Weed Management Techniques in Kapilbastu, Nepal النص الكامل
2023
Keshav Raj Kafle | Kapil Simkhada
At Banganga, Kapilbastu, Nepal, a field experiment was conducted in the spring of 2021 to determine the performances of transplanted spring rice under different weed management techniques. With five treatments and four replications, the experiment was structured as a single-factorial Randomized Complete Block Design (RCBD). The treatments consisted of Pretilachlor 50% EC (dose: 500 ml a.i. per acre) as pre-emergence herbicide, Pretilachlor 50% EC (dose: 500 ml a.i. per acre) as pre-emergence herbicide plus hand weeding at 20, 40 DAT, Hand weeding at 20 DAT, 40 DAT, 60 DAT, Cono-weeding at 20 DAT, 40 DAT, 60 DAT and control. The plots treated with Pretilachlor plus hand weeding recorded a significantly higher plant height (99cm), higher number of effective tillers per meter square (11.97), higher panicle length (26cm), and higher number of grains per panicle (200.60) at 90 DAT. The sterility percentage and the no. of grains per panicle were not affected by the weed management practices. Cono-weeding was found statistically superior in terms of grain yield (6.09 Mt ha-1) and harvest index (42.10 %). The experiment concluded that the weed management practices affect the grain yield of transplanted spring rice.
اظهر المزيد [+] اقل [-]Effect of Irrigation Intervals on Some Morphological Traits, Seed Properties and Essence Yield of Savory (Satureja spicigera L.) Under Field Conditions النص الكامل
2023
Seyyed Fazel Fazeli Kakhki | Mohammad Joleini | Nasser Beikzadeh
Agricultural management is one of the main factors to ameliorate environment adverse effects. Climate change has adverse effects on water availability in drought and semi-drought regions that constrain crop survival. In order to investigate the effect of irrigation intervals on morphological characteristics and yield components of savory plant (Satureja spicigera L.), an experiment was carried out based on randomized complete block design in three levels irrigation interval treatments (7 days (I7), 14 days (I14) and 21 days (I21)) with three replications in Khorasan Razavi Agricultural and Natural Resources Research and Education Center during of 2019. Results showed that with increase in irrigation intervals, all morphological characteristics and yield components were decreased. However there was no significant differences in seed and essence yield, plant canopy area, number of main stems, number of branches and stem diameter due to I7 and I14 treatments. In drought stress (I21), seed width was more affected than seed length. The lowest percentage of survival was observed in I21 treatment which was reduced by 26% and 35% respectively, compared to treatments I14 and I7. By increasing the irrigation interval to 21 days, the highest reduction in savory characteristics occurred, so that the highest and lowest biomass and seed yield were recorded from I7 and I21 treatments, respectively. There was a significant positive correlation between biomass and plant height (r = 0.998*), total plant leaf area (r = 0.770*), number of main stems (r = 0.796*) and number of branches (r = 0.998*). It seems that savory production can be improved in acceptable amount with 14-day irrigation interval.
اظهر المزيد [+] اقل [-]Urbanization of Forest Fires: An Evaluation on Metropolitan Forest Fires in The Mediterranean Ecosystem النص الكامل
2023
Nursema Aktepe | Eray Aktepe
The main purpose of the study is to examine the impact of drastic and proactive forest fire interventions, which are applied to avoid the risk of loss of life and property close to urban areas, on the continuity of plant species with fire-adapted characters and the potential to cause species loss. In this context, the basic assumption of the study is that the reduced frequency of fires caused by suppressed fires in natural areas in order to avoid the risk of forest fires that may affect residential areas, will lead to the reduction of various plant species that sustain their lives thanks to their fire-adaptive characters. As a qualitative data analysis method, the rates of urban and forest areas, the number of forest fires, the amount of burned area and plant species diversity data were used to deal with the study data with document analysis. In the selection of the 10 metropolitan cities that constitute the sample area of the study, the criteria of being in the Mediterranean ecosystem, containing plant species adapted to fire, and being metropolitan (where natural and built environment elements are intertwined) were taken as basis. The study will create an ecological perspective in fire prevention policies and strategies to be developed through the determination of plant species characteristics in large cities located in the fire-prone Mediterranean ecosystem.
اظهر المزيد [+] اقل [-]Ankara İlinde Keçi Eti ve Et Ürünleri Tüketici Algısını Etkileyen Faktörler النص الكامل
2023
Özge Aksit | Gürsel Dellal | Simge Tütenk | Erkan Pehlivan
Bu çalışma Ankara ili merkez ilçelerinde ikamet eden (Altındağ, Çankaya, Etimesgut, Gölbaşı, Keçiören, Mamak, Pursaklar, Sincan ve Yenimahalle) tüketicilerin keçi eti ve et ürünlerine karşı olan algılarını belirlemek ve bu ürünlerin tüketiminde etkili olan faktörlerin belirlenmesi amacıyla gerçekleştirilmiştir. Bu amaçla 269 tüketiciyle yüz yüze anketler gerçekleştirilerek tüketicilerin sosyo-ekonomik ve demografik özellikleri, keçi eti ve et ürünleri tüketmeye ve satın almaya yönelik davranışları incelenmiştir. Araştırma bulguları ki kare istatistik yöntemi ve çapraz tablo ile analiz edilmiştir. Ankete katılan tüketicilerin %82,2’sinin keçi eti ve et ürünlerini tüketmediği %17,8’inin ise tükettiği belirlenmiştir. Tüketiciler tarafından keçi eti ürünü olarak en çok kuşbaşı (%16,7) ve kıyma (%13,8) tüketildiği ve aylık keçi kuşbaşı ve keçi kıyması tüketim miktarlarının sırasıyla; 0,20 ve 0,17 kg olduğu tespit edilmiştir. Yapılan ki kare analizi sonucunda tüketicilerin demografik özellikleriyle keçi eti ve et ürünleri tüketimi arasındaki ilişkinin istatistik olarak önemli olmadığı fakat erkek, evli,18-45 yaş aralığında ve eğitim düzeyi yüksek bireylerin keçi eti tüketme eğilimlerinin daha yüksek olduğu belirlenmiştir. Bununla birlikte kurban kesme eğilimiyle keçi eti tüketimi arasındaki ilişkinin önemli olduğu tespit edilmiştir. Keçi eti ve et ürünleri tüketici tercih ve algısının arttırılmasına yönelik yapılacak olan tanıtım çalışmalarında bu özelliklerin dikkate alınması daha etkili sonuçlar elde edilmesine neden olacaktır.
اظهر المزيد [+] اقل [-]Kompost, Bakteri ve Mikoriza Uygulamalarının Yenilebilir Lale Petallerinin Fitokimyasal İçeriklerine Etkisi النص الكامل
2023
Onur Sefa Alkaç | Muhammed Esad Tuncel | Emircan Dinçer | Alperen Donat
Bu çalışmada, farklı oranlarda (%0-%20 ve %40) kompost içeren ortamlara bakteri ve mikoriza uygulamalarının etkileri araştırılmıştır. Çalışmada lale soğanları, 0,3 absorbans (Abs) değerine sahip bakteri süspansiyonlarına 30 dakika ve 5000 ppm mikoriza süspansiyonuna 10 saniye daldırıldıktan sonra 20 cm derinliğinde × 40 cm genişliğinde × 60 cm uzunluğundaki plastik kasalara dikilmiştir. Yetiştiricilik sonunda hasat edilen lale petallerindeki toplam fenol (µg GAE/g fw), TEAC (µmol TE/g fw) ve toplam flavonoid (mg KE/L fw) içerikleri incelenmiştir. Çalışma sonunda, sadece kompost uygulamaları kıyaslandığında, %40 oranında kompost uygulanan ortamlardan alınan lale petallerinde en yüksek TP (28682,63 µg GAE/g fw) ve Total Flavonoid (1011,96 mg KE/L fw) ölçülürken, kompost içermeyen ortamlarda (%0) ise en yüksek TEAC (9.46 µmol TE/g fw) değeri ölçülmüştür. Bakteri ve mikoriza uygulamalarında ise, mikroorganizma uygulaması yapılmayan ortamlar, uygulama yapılan ortamlara kıyasla daha iyi sonuçlar vermiştir. Farklı kompost oranları ile bakteri uygulamalarının kombinesi sonucunda, en yüksek TP (28833,42 µg GAE/g fw) ve Total Flavonoid (1014,07 mg KE/L fw) içerikleri %40 kompost uygulaması ve bakteri uygulaması yapılan ortamlardan alınan petallerde ölçülürken, en yüksek TEAC (9,80 µmol TE/g fw) %40 oranında kompost içeren ve bakteri bulunmayan ortamlardan alınan petallerde ölçülmüştür. Farklı kompost oranları ile mikoriza uygulamalarının etkileri kıyaslandığında, %40 kompost oranı ve mikoriza uygulamasının bulunmadığı ortamlarda en yüksek TP (29944,53 µg GAE/g fw), TEAC (10,13 µmol TE/g fw) ve Total Flavonoid (1083,52 mg KE/L fw) değerleri saptanmıştır. Sonuç olarak, kompost oranları arttıkça değerlerde artışların gerçekleştiği, mikroorganizmaların ise fitokimyasal içeriklerinde etkili olmadığı sonucuna varılmıştır.
اظهر المزيد [+] اقل [-]