نتایج جستجو برای: no till
تعداد نتایج: 3307984 فیلتر نتایج به سال:
by concerns about nutrient loading. Increased on-site nutrient loading from concentrated animal feeding opApplying organic matter (OM) amendments to cropland reduces erations (CAFOs) have prompted investigations into requirements for synthetic fertilizer and may eliminate yield differalternative uses for manure produced in various liveences between conventional and minimum tillage. The objectiv...
With more than 65% of agronomic crops under no-till in Pennsylvania, herbicides are relied on for weed management. To lessen the environmental impact and selection pressure herbicide resistance, we conducted a 9-yr experiment to test reduction practices dairy crop rotation at Rock Springs, PA. The included soybean [Glycine max (L.) Merr.]–corn (Zea mays L.)–3-yr alfalfa (Medicago sativa L.)–can...
The paper presents comparison of three soil tillage systems in maize, winter wheat and soybean growing on anthropogenic Albic Luvisol in north-west Slavonia, Croatia, during 1996-1999. Tillage systems and implements were: 1. conventional system (CT)-plough, disc-harrow and combined implement, 2. conservation system (RT)-chisel plough and multitiller, 3. no-till system (NT). The aim of testing w...
Toxicity persistence to the nontarget amphipod Hyalella curvispina in runoff events following chlorpyrifos applications to soy experimental plots was compared in conventional and no-till management. Two application scenarios were compared: an early-season application with the soil almost bare and a late-season application after the foliage had attained complete soil cover. H. curvispina was exp...
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