نتایج جستجو برای: chemical amendments
تعداد نتایج: 383432 فیلتر نتایج به سال:
Applying soil amendments with high C content can potentially improve properties and increase crop yields. The objective of this 3-yr field study was to evaluate the effects organic on (SOC), chemical properties, nutrient uptake, yields in a low sandy loam near Scottsbluff, NE. planted dry bean (Phaseolus vulgaris L.) 2017, maize (Zea mays 2018, sugar beet (Beta 2019. Char at 22.3, 44.6, 66.9, 8...
Moral rights amendments to the Australian Copyright Act present a challenge and an opportunity for large public sector agencies. Their implementation is not straightforward and can be interpreted in a number of ways. Moral rights amendments require a proactive response, as much of the work in public sector agencies is governed by the Copyright Act. The interpretation of the moral rights legisla...
To study the influence of different organic amendments on the quality of poultry manure compost, three pilot composting trials were carried out with different mixes: poultry manure/carcasse meal/ashes/grape pomace (Pile 1), poultry manure/ cellulosic sludge (Pile 2) and poultry manure (Pile 3). For all piles, wood chips were applied as bulking agent. The process was monitored, over time, by eva...
The recent energy crisis has increased the cost of fertilization for olive growers. This is why alternative nutrient sources, such as manures and other organic materials, could be used to sustain production within framework sustainable agriculture, by decreasing chemical inputs. A greenhouse pot experiment was established with a marl soil substrate that modified three amendments (sheep manure, ...
Productivity in desert ecosystems is primarily limited by water followed by nitrogen availability. In the deserts of southern California, nitrogen additions have increased invasive annual plant abundance. Similar findings from other ecosystems have led to a general acceptance that invasive plants, especially annual grasses, are nitrophilous. Consequently, reductions of soil nitrogen via carbon ...
Ammonia volatilization from poultry litter often causes high levels of atmospheric ammonia in poultry houses, which is detrimental to both farm workers and birds. Ammonia emissions from houses also aggravate environmental problems, such as acid rain, and result in a loss of fertilizer nitrogen. The objectives of this study were to determine the effect of litter amendments on ammonia volatilizat...
Technological, agronomical and economic efficiency of new organic and organo-mineral soil amendments
The intensification of crop production coupled with current declining soil fertility needs proper plant nutrition management and improved effectiveness fertilizer use. Sustainable practices providing new amendments could be a useful tool to improve productivity causing economic benefits. technology processing local raw materials (leonardite, bentonite, molasses) was developed produce optimal ph...
Irrigation with untreated effluent in periurban agriculture could result in accumulation and bioconcentrations of cadmium (Cd) and lead (Pb). Different amendments were used to investigate their effect on availability, concentration, and uptake of metals by wheat in texturally different soils. Crop was irrigated with water containing Cd and Pb at 20 mg L−1, thereby adding 260 mg pot−1 of each me...
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