by School of Development Studies, University of East Anglia in Norwich .
Written in English
|Series||Discussion paper -- no.191|
According to the Cover Crop Survey, more growers than ever are using cover crops as a way to suppress weeds, prevent erosion and improve crop yields. (Journal photo by Bill Spiegel.) FacebookAuthor: Bill Spiegel. Crop yields decline over time due to the oxidation and loss of soil organic matter. Recommended practices in the early s. Producers were also observing yield declines in their fields after years of continuous tillage and cultivation. The HHH is the most intensively cultivated region in China. The average crop yield increase between and was from to kg ha −1 for wheat and to kg ha −1 for maize. The present crop yields are and times the national average yield of wheat and maize in . These same erosional processes carry away good soil from farmland that is producing crops. However, the time frames of soil formation and soil destruction differ. The three societies invited them to present their results at a symposium on the impacts of soil erosion on crop productivity. The book is an outgrowth of that symposium and.
The Effect of Soil Erosion on Europe’s Crop Yields. A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure. In fact, crop yields have increased substantially over time in many areas where erosion rates are high. This paradox has led some observers to discount the importance of . Research into the impact of erosion on soil productivity - primarily as determined by crop yield - was reviewed. Losses in productivity seem to be most prevalent on intrinsically less productive soils and under low-input management. Yield decline was exponential, this applied both to yield over time, at a point in space, as erosion proceeded; and also to yield at a point in time, in relation Cited by: 1. The effects of tillage on WUE and crop yields are complex and related to soil type, climate, cropping system, and other management practices, such as crop residue management (Unger, ; Hatfield et al., ; Gajri et al., ). There is strong evidence that deep tillage or subsoiling of nonplastic soils provides a continuous low soil.
Ecological Crop and Soil Management We’ll discuss ecological crop and soil management practices as part of a general framework for approaching ecological crop management (figure ). The heart of the matter is that the strength of the system is improved by creating improved habitat both . Hold onto Your Valuable Crop Land with Erosion Control Fight costly soil erosion that results from Ontario’s intense spring and summer rains. You may not notice the slow erosion process, but over time you are losing the natural nutrients and valuable topsoil your crops depend on. Tell students that these graphs in this image show the projection of maize crop yields in France over this time period—the average daily precipitation, number of hot days, and yield of maize. The gray line shows the predictions for crop yield based on technological improvements. • Low yields • Time & expense to repair gullies • Small rills and channels in your fields • Soil deposited at the base of slopes or along fence lines • Sediment in streams, lakes, and reservoirs Soil Erosion May be the Problem! What is soil erosion? Soil erosion by wind .