نتایج جستجو برای: chisel plow and no tillage were arranged as main plots

تعداد نتایج: 17863169  

2007
M. Temesgen W. B. Hoogmoed

Papers published in Hydrology and Earth System Sciences Discussions are under open-access review for the journal Hydrology and Earth System Sciences Abstract The traditional tillage implement, the Maresha plow, and the tillage systems that require repeated and cross plowing have caused poor rainfall partitioning, land degradation and hence low water productivity in Ethiopia. Conservation tillag...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم تربیتی و روانشناسی 1391

the purpose of this study was to examine the status of supervision on departments’ heads at ferdowsi university of mashhad (fum) and realize some applied themes to provide a fit model for supervising departments’ heads in fum. the method was case study under a research category aimed for applied one. using purposive sampling, interviews were conducted with top fum managers, head departments, an...

Journal: :تولید گیاهان زراعی 0

the seedbed preparation and cereal residue present due to limit of maize (zea mays l.) growing period are a major challenge in double cropping after winter cereals in iran as: shahrekord. in this research, effects of various seedbed preparation methods and crop residuea managements on vegetative growth and yield of forage maize (ksc 704) were studied in a barley-maize double cropping during 200...

Journal: :Soil & Tillage Research 2022

Tillage intensity may differently impact gaseous losses of C and N to the atmosphere, but data from long-term experiments are relatively few. Yet, this information is needed better understand gains in agricultural systems. The objective study was determine how tillage affects soil greenhouse gas (GHG) fluxes (CO 2 , O, CH 4 ) by comparing experimental moldboard plow (MP), chisel (CP), double di...

Journal: :مهندسی بیوسیستم ایران 0
سیدعلی حسینی دانشجوی سابق کارشناسی ارشد، دانشکده کشاورزی دانشگاه شیراز سیدحسین کارپرورفرد استادیار، دانشکده کشاورزی دانشگاه شیراز

this study was conducted to develop the appropriate equations for predicting draft and vertical forces on a chisel tine using dimensional analysis technique. tests were carried out in the soil laboratory of the agricultural engineering research institute, karaj, iran. the effects of four levels of rake angle (10, 15. 20 and 25degrees), three levels of forward speed (1.5, 3, and 4.5 kmh-1 )and t...

انوشیروان فروزنده شهرکی, , محمدرضا خواجه‌پور, ,

Under irrigation and in double-cropping system, a large amount of plant residue remains after harvest that along with the limited time for residue decomposition and complete seedbed preparation, necessitates reduced tillage and special residue management. In the present study, the effects of various seedbed preparation methods on vegetative growth, yield components and seed and oil yields of su...

2008
Randy L. Anderson

Producers are interested in tactics for managing crop residues when growing corn after spring wheat. We compared five systems of managing spring wheat residues: conventional tillage, no-till, strip-till, cover crop (hairy vetch) with no-till, and cover crop with strip-till following spring wheat. Conventional tillage consisted of chisel plowing and disking, whereas strip-till consisted of tilli...

2007
Jonn A. Foulk Philip J. Bauer Danny E. Akin R. B. Russell Warren J. Busscher

There currently are no data on using reduced tillage for flax (Linum usitatissimum L.) production when double-cropped after cotton (Gossypium hirsutum L.) in the southeastern USA. This study evaluated how tillage and subsoiling influenced double-cropped flax and cotton productivity and quality under conditions in the southeastern USA. An irrigated study on a loamy sand soil (Eunola loamy sand) ...

ژورنال: علوم آب و خاک 1999
جمشیدیان, رضا , خواجه‌ پور, محمدرضا ,

Limited time for crop residue decomposition and complete seedbed preparation in double-cropping necessitates reduced tillage which is associated with its shortcomings. Information about seedbed preparation aspects in double-cropping of wheat and mungbean in Isfahan is lacking. For this reason, the effects of various seedbed preparation methods on growth, seed yield and yield components of mungb...

1999
S. W. Duiker R. Lal

Soils play a key role in the global carbon cycle. They can be a source or a sink of carbon and in ̄uence CO2 concentrations in the atmosphere. In order to calculate the carbon budget of a region, the effect of soil management practices on carbon sequestration in soils needs to be quanti®ed. Objectives of this experiment were to determine: (i) the effects of ridge till, plow till and no-till on t...

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