نتایج جستجو برای: production yield

تعداد نتایج: 769112  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده کشاورزی 1390

abstract previous researches have shown success of growth hormones usage on flower production increase, pod and prevention of abscission of them in some of the pulses. two tests were done, in order to find out the effects of growth hormones to on flower production increase, pod and chick pea yield composites in farmer conditions (2010-11) and green house conditions as factorial on the proje...

2016
Marc Destefano Wayne D. Gray

In complex task domains, such as games, students may exceed their teachers. Such tasks afford diverse means to tradeoff one type of performance for another, combining task elements in novel ways to yield method variations and strategy discoveries that, if mastered, might produce large or small leaps in performance. For the researcher interested in the development of extreme expertise in the wil...

Journal: :international journal of agricultural management and development 2015
zahra ghaffari moghadam

in this study, yield-water and profit function was used to obtain water demand function in agriculture sector. the results showed that the ratio of actual to potential evapotranspiration had positive, significant effecton the ratio of actual to potential yield for wheat and barley. also, square ratio of actual to potential evapotranspiration had negative, significant relationship. after estimat...

Journal: :international journal of civil engineering 0
m.d. martinez aires e.t.s i.ngeniería edificación .e. c/ severo ochoa s/n 18071. granada m. lopez alonso e.t.s.caminos, canales y puertos. c/ severo ochoa s/n 18071. granada, spain. e. jadraque gago e.t.s.caminos, canales y puertos. c/ severo ochoa s/n 18071. granada, spain. r. pacheco-torres e.t.s.caminos, canales y puertos. c/ severo ochoa s/n 18071. granada, spain.

workers who carry out manual rebar tying tasks are exposed to muscular-skeletal injuries associated with the use of manual tools and the movements associated with them (force, repetitiveness and awkward wrist postures). this paper presents a background on musculoskeletal injuries directly linked to manual and mechanical rebar tying method is conducted. the objective of this study is to compare ...

Ahmad Moieni Ali Soroushzadeh Zahra Movahedi

Two different propagation procedures including aeroponics and soil systems were compared for the minitubers production in potato. The minitubers were evaluated for several quality characters. The plant materials were from three cultivars, Agria, Marfona and Savalan. The plantlets were grown in aeroponics and soil production systems at a plant density of 100 plants per m-2 and stem length, root ...

A. Patanothai, T.M. Aye U. Sopheap

Cassava (Manihot esculenta Crantz) is currently the most important upland crop of Cambodia, but information on yield variations and causal factors which is important for efficiently targeting efforts to increase production is still lacking. The objectives of this study were to determine the yield variations and causal factors for cassava production in Kampong Cham province in Cambodia. Fort...

ژورنال: علوم آب و خاک 2007
جواد ترکمانی, , شاهرخ شجری, ,

This paper investigates the effects of wheat production risk and other socio-economic factors on the probability of adopting new seed technologies. Also, the effects of production inputs and production conditions are examined on wheat production yield and risk. Moreover, the relative risk of new seed varieties will be examined under different scenarios. To carry out the study, farm-level data ...

جواد ترکمانی, , شاهرخ شجری, ,

This paper investigates the effects of wheat production risk and other socio-economic factors on the probability of adopting new seed technologies. Also, the effects of production inputs and production conditions are examined on wheat production yield and risk. Moreover, the relative risk of new seed varieties will be examined under different scenarios. To carry out the study, farm-level data ...

Journal: :آب و خاک 0
رمضانی اعتدالی رمضانی اعتدالی نظری نظری توکلی توکلی پارسی نژاد پارسی نژاد

abstract: deficit irrigation technique can be used for produce more yield for every unit of irrigation water, and cause to increase crop economical benefit. main purpose of deficit irrigation is high water use efficiency with decreasing in irrigation sufficiency. in this research potential of cropwat model in deficit irrigation management for two crops, wheat and barley in karaj climate was stu...

Journal: :تحقیقات مهندسی کشاورزی 0
علیرضا کیانی استادیار پژوهش بخش تحقیقات فنی و مهندسی مرکز تحقیقات کشاورزی و منابع طبیعی استان گلستان

water shortage in the agricultural sector is currently a major challenge in crop production. the more efficient water usage is that which increases yield without increasing water use. thus, a determination of the water-yield relationship is essential. a field study was conducted to examine water-yield relations in three genotypes of soybeans, including optimum irrigation depth, a comparison of ...

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