نتایج جستجو برای: uan
تعداد نتایج: 184 فیلتر نتایج به سال:
background & aim:peppermint known for its healing properties is a plant from the labiatae family. currently, different rates of nitrogenous fertilizers are used in production of peppermint while there is no precise information available about how much of nitrogen fertilizer is the optimum rate for this plant. the main purpose of this research was to evaluate the response of peppermint chemical ...
Excessive application of swine manure to a field over long durations can increase nitrate-nitrogen (NO 3 -N) leaching as a result of accumulation of more nutrients in the root zone than the subsequent crops may need. The objective of this study was to use the GLEAMS (V.2.1) model to compare measured versus simulated effects of swine manure application with urea-ammonium-nitrate (UAN) on subsurf...
We evaluated the eff ects of irrigated crop management practices on nitrous oxide (N2O) emissions from soil. Emissions were monitored from several irrigated cropping systems receiving N fertilizer rates ranging from 0 to 246 kg N ha−1 during the 2005 and 2006 growing seasons. Cropping systems included conventional-till (CT) continuous corn (Zea mays L.), no-till (NT) continuous corn, NT corn–dr...
As an emerging research area, Underwater Acoustic Networks (UANs) have attracted tremendous interests in last several years. Reliable and efficient data transfer is of critical importance for UANs since it serves as the essential underlying service for various tasks. Due to the unique features of UANs including the long propagation delay, low bandwidth and high error probability, reliable and e...
Abstract Adequate fertilization strategies are paramount to fulfill increasing demands for food, feed and fiber while reducing environmental impacts. However, their optimization under Mediterranean no-till systems has received little attention. The objective of this work was assess winter cereal yield water N use efficiencies in a rainfed semiarid climate (i) range pre-plant fertilizers [contro...
We evaluated the effects of irrigated crop management practices on nitrous oxide (N(2)O) emissions from soil. Emissions were monitored from several irrigated cropping systems receiving N fertilizer rates ranging from 0 to 246 kg N ha(-1) during the 2005 and 2006 growing seasons. Cropping systems included conventional-till (CT) continuous corn (Zea mays L.), no-till (NT) continuous corn, NT corn...
Comprehensive assessment of the total greenhouse gas (GHG) budget of reduced tillage agricultural systems must consider emissions of nitrous oxide (N2O) and methane (CH4), each of which have higher global warming potentials than carbon dioxide (CO2). Tillage intensity may also impact nitric oxide (NO) emissions, which can have various environmental and agronomic impacts. In 2003 and 2004, we us...
Background & Aim:Peppermint known for its healing properties is a plant from the Labiatae family. Currently, different rates of nitrogenous fertilizers are used in production of peppermint while there is no precise information available about how much of nitrogen fertilizer is the optimum rate for this plant. The main purpose of this research was to evaluate the response of pep...
Background & Aim:Peppermint known for its healing properties is a plant from the Labiatae family. Currently, different rates of nitrogenous fertilizers are used in production of peppermint while there is no precise information available about how much of nitrogen fertilizer is the optimum rate for this plant. The main purpose of this research was to evaluate the response of pep...
Sulfur nutrition is a critical part of proper crop growth and development. In our study, biomass yields (BY) S uptake were investigated on long-term maize monoculture haplic luvisol soil during the 23 years this trial, as well changes in water extractable (Sw), adsorbed (Sads), mineral (Sav), pseudo-total (St) fractions. Treatments used study are: (1) Control (Cont); (2) ammonium sulfate (AS); ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید