In 1987, the United States Department of Agriculture (USDA-ARS) National Sedimentation Laboratory, in cooper­ ation with the Mississippi Agricultural and Forestry Experi­ ment Station (MAFES) and the Natural Resources Conservation Service (NRCS), initiated an interdisciplinary research project to develop profitable and environmentally sustainable conservation production systems for silty upland...

In the northern part of Kazakhstan, zero-tillage2 technology has the potential to increase wheat/grain productivity by 20 to 50 percent above current levels. However, phasing out conventional tillage can only be gradual, as full conversion to zero-tillage will require important investments and farm organizational changes. Actual current area under conservation agriculture (CA) appears to be inc...

Appropriate tillage plays an important role in mitigating the emissions of greenhouse gases (GHG) in regions with higher crop yields, but the emission situations of some reduced tillage systems such as subsoiling, harrow tillage and rotary tillage are not comprehensively studied. The objective of this study was to evaluate the emission characteristics of GHG (CH4 and N2O) under four reduced til...

Relations between riverine export (load) of total nitrogen (N) and total phosphorus (P) from 133 large agricultural watersheds in the United States and factors affecting nutrient transport were evaluated using empirical regression models. After controlling for anthropogenic inputs and other landscape factors affecting nutrient transport-such as runoff, precipitation, slope, number of reservoirs...

In this study, we reviewed weed seed bank dynamic and main agriculture operations to come up with the management modeling designed increase crop productivity by removing competition. Weed contributing 10% loss of total global grain production. regulate five demographic processes seedling recruitment survival, production, dispersal survival in soil. The that interference are rotation primary til...

Introduction Conservation tillage has been one of the most rapidly adopted agricultural practices of the past 15 years (CTIC, 1983). The primary impetus for conservation tillage has been decreased soil erosion; fuel, labor, and machinery costs; and increased soil water storage and yields (USDA, 1975). Conservation tillage may be broad­ ly defined as tillage practices that reduce soil and water ...

Zero tillage straw retained with optimum K is an important strategy to increase cotton ( Gossypium hirsutum L.) yield and efficiency in wheat Triticum aestivum L.)-cotton system. A 2 years field experiment was conducted during 2018, 2019 study the impact of [zero as such on soil surface (ZT SAS ) zero burnt SB )] five rates were 0, 20, 40, 60 80 kg ha -1 use efficiency. Results indicated that b...