نتایج جستجو برای: crop residue management
تعداد نتایج: 954683 فیلتر نتایج به سال:
Abstract Growing cowpea ( Vigna unguiculate (L) Walp) in rotation with millet Pennisetum glaucum (L.) R. Br.) can increase productivity through biological nitrogen fixation. However, Senegal, legume crop residues are generally removed for livestock feed, and little information exists on how burying the residue instead of removal affects subsequent yield. This study assessed varieties evaluated ...
Averaged across crop, year and season , residue cover reduction was significantly less for coulter-type applicators than for disk-type applica-tors (P<0.001), disk-type applicators reduced residue cover significantly less than chisel and sweep injectors (P<0.001), and chisel and sweep injec-tors reduced residue cover similar to a tandem disk (P=0.398). Ranges of values to estimate the percentag...
In the light of daunting global sustainability challenges such as climate change, biodiversity loss and food security, improving our understanding of the complex dynamics of the Earth system is crucial. However, large knowledge gaps related to the effects of land management persist, in particular those human-induced changes in terrestrial ecosystems that do not result in land-cover conversions....
Irrigated crops are produced on 645,000 ha in east-central Washington and northcentral Oregon (1). Approximately 70% of this cropland is irrigated with water diverted from rivers, while water for the remaining hectares is pumped from deep wells. Much of the irrigated cropland is found in areas of less than 200 mm annual precipitation, where dryland farming is difficult or impossible. Wind erosi...
Past agricultural management practices have contributed to the loss of soil organic carbon (SOC) and emission of greenhouse gases (e.g., carbon dioxide and nitrous oxide). Fortunately, however, conservation-oriented agricultural management systems can be, and have been, developed to sequester SOC, improve soil quality, and increase crop productivity. Our objectives were to (i) review literature...
The conventional crop production practices including intensive tillage and open field residue burning in world’ largest rice-wheat system (RWS) are adversely affecting productivity besides deteriorating natural resources ecosystems’ sustainability. In order to improve productivity, potassium (K) use efficiency apparent K balance, adoption of conservation a RWS with management is considered high...
The effects of tillage methods and residual management on yield and yield components of rapeseed (Brassica napus L. CV. Hyola308) were evaluated after rice harvest. The experiment was carried out during 2004-2005 cropping season in a factorical arrangement of treatments at Rice Research Institute of Iran (RRII) in Rasht, in a Complete Randomized Block Design with three replications. Treatments ...
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