نتایج جستجو برای: agricultural and non

تعداد نتایج: 17023085  

Journal: :به نژادی نهال و بذر 0
اکبر قندی a. ghandi داود افیونی d. afyooni گودرز نجفیان g. najafian مجتبی وهابزاده m. vahabzadeh عظیم اکبری a. akbari محمد ترابی m. torabi امیر یزدان سپاس

sepahan is a new bread wheat cultivar derived from progenies of a cross made between azadi cultivar and some high yielding and resistant to rust advanced lines. all selections were made in kelardasht and iranshahr stations and early evaluations in karaj. it was also studied in regional uniform yield trials in moderate stations including kaboutar abad. results revealed that this line is more tol...

Journal: :journal of agricultural science and technology 2012
r. movahedi u. j. nagel

this study aimed at identifying required competencies for the labor market by the graduates majoring in the agricultural extension education field. the study population included undergraduates, faculty members, and employers, as related to bachelor level in three extension and education departments at bu ali sina, tehran, and shiraz universities of iran. the study has employed both quantitative...

Journal: :تحقیقات مهندسی کشاورزی 0
بهاره جمشیدی کارشناس ارشد از دانشگاه تربیت مدرس سعید مینایی استادیار دانشکده کشاورزی، دانشگاه تربیت مدرس شهریار صرامی کارشناس ارشد از دانشگاه تربیت مدرس

development of a suitable method for color sorting of agricultural products such as: tomato, apple and orange, based on surface reflection and image formation was the goal of this research. a suitable scheme of color differentiation using an optic head and electrical processing circuitry for separating red from green and other colors is presented. a photo-conductive transducer, electrical resis...

Journal: :international journal of agricultural science and research 2012
solmaz shamsadini saeed yazdani reza moghaddasi

investing in research and development spending (r&d) affects total factor productivity (tfp).recently new theories of economic growth have emphasized the relationship between r&d and tfpand also identified a number of channels through which a country’s r&d affects tfp of its tradepartner. this study seeks to estimate the effect of agricultural r&d and education spending and some...

Journal: :Journal of Agricultural and Applied Economics 1992

Journal: :بوم شناسی کشاورزی 0
سلماز رضوی دربار امیر لکزیان اکرم حلاج نیا غلامحسین حق نیا

incorporation of plant residue in soils is considered as an important agricultural practice for maintaining soil fertility in sustainable agricultural system. co2 levels, nitrogen fertilization and plant residues are factors which highly affect decomposition of added organic matter to soil. in this research controlled chambers were used to investigate the effects of elevated atmospheric co2 con...

In recent years, Nigeria witnessed significant labour migration coupled with reduction in rural agricultural productivity. Youths abandoned farms for ventures with high returns and less drudgery in cities thus labour availability in peak agricultural seasons became scarce. The declining farm population constituting mostly women and old men are not capable of producing sufficient food for the no...

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