نتایج جستجو برای: cucumber water productivity

تعداد نتایج: 634020  

2006
Saleh M. Ismail Kiyoshi Ozawa

Cultivating sandy soil is a promising solution to overcome the fight against hunger especially in the developing countries. The main problems of sandy soil are moisture holding capacity and nutrients deficiency. A containers experiment was carried out to study the enhancement of water productivity and crop yield of sandy soils treated with clay. The container size was 31 x 15 x 60 cm with one t...

Journal: :نشریه علمی - پژوهشی هیدرولوژی کاربردی 0
fatemeh karandish zabol university

fresh water scarcity has become a global problem which needs a serious attempt to find proper solutions for decreasing the pressure on the limited water resources. the exact estimation of crop virtual water would help with choosing crops with high crop and water productivity which lead to both food and water security. thus, in this research, maize virtual water was estimated using hydrus2d base...

2016
Degen Lin Hao Guo Fang Lian Yuan Gao Yaojie Yue Luis Loures

Water erosion causes reduced farmland productivity, and with a longer period of cultivation, agricultural productivity becomes increasingly vulnerable. The vulnerability of farmland productivity needs assessment due to long-term water erosion. The key to quantitative assessment is to propose a quantitative method with water loss scenarios to calculate productivity losses due to long-term water ...

2008
M. Dinesh Kumar O. P. Singh Madar Samad Hugh Turral Chaitali Purohit

The objective of the study is to explore the scope for water productivity enhancement in irrigated agriculture in India through: i] water control; ii] optimizing nutrient input to crop; iii] improving the quality and reliability of irrigation water; and, iv] growing crops in regions where climate is favourable. The study is based on data from three important river basins in India, viz., Indus, ...

2010
A. M. Ibekwe D. Suarez

Soil salinity is a major factor relating microbial communities to environmental stress in the microbial selection process as stress can reduce bacterial diversity. In the San Joaquin Valley (SJV) of California, the problem of increasing salinity and consequently, decreasing crop productivity, due to reuse of saline drainage water are major concerns. An experiment was conducted in a closed, reci...

Journal: :journal of agricultural science and technology 2012
m. r. tadayon r. ebrahimi a. tadayyon

limitations of water and nitrogen in soil usually restrict plant growth. the objective of this study was to evaluate the effects of different amounts of supplemental irrigation at different growth stages and application of different rates of nitrogen fertilizer on grain yield and water productivity of wheat cultivars. a field experiment was conducted in the agricultural research station of shah...

Journal: :Phytopathology 2008
M-H Chen E B Nelson

Composts are known for their suppressive properties toward many different seed- and root-infecting pathogens and diseases. Although disease and pathogen suppression induced by composts is believed to be mediated by microbial activities, the nature of the microbial species and processes responsible for suppressiveness remain unknown. We demonstrated previously that seed-colonizing microbial cons...

Journal: :Agronomy 2023

The availability of water and nutrients are determining factors for the growth productivity cucumber crop. implementation grafting techniques increases efficiency in absorption resources such as nutrients, improving quality, mineral content, enzymatic activity fruit. objective this research work was to evaluate effect anchor point (soil substrate), graft (with without graft), irrigation volume ...

Journal: :مدیریت آب و آبیاری 0
علیرضا توکلی استادیار پژوهش، بخش تحقیقات فنی و مهندسی، مرکز تحقیقات کشاورزی استان سمنان، شاهرود - ایران

the effects of planting date and single irrigation (si) allocation scenarios on increasing and stability of yield were investigated to determine the total water productivity and economical water productivity (wpe), for rainfed wheat at dryland agricultural research institute in maragheh, iran, during 2000-2004. the treatments included three sowing dates (early, normal and late), four allocation...

Journal: :پژوهش آب در کشاورزی 0
نعمت اله صداقت کارشناسی ارشد، گروه زراعت و اصلاح نباتات، دانشگاه علوم کشاورزی و منابع طبیعی ساری. همت اله پیردشتی دانشیار، گروه زراعت، پژوهشکده ژنتیک و زیست فناوری کشاورزی طبرستان، دانشگاه علوم کشاورزی و منابع طبیعی. رضا اسدی عضو هیئت علمی موسسه تحقیقات برنج کشور – معاونت مازندران (آمل). سید یوسف موسوی طغانی کارشناس ارشد گروه زراعت، پژوهشکده ژنتیک و زیست فناوری کشاورزی طبرستان، دانشگاه علوم کشاورزی و منابع طبیعی.

in order to evaluate the possibility and compare different irrigation methods in ricecultivation, an experiment was conducted in factorial based randomized complete blockdesign at rice research institute of iran, mazandaran (amol), during 2011. treatments weredifferent irrigation regimes including alternate wet and drying (awd), semi-dry cultivation(sdc), combining shallow water depth with wett...

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