The scale and complexity of change in software process improvement (SPI) are considerable and managerial attention to organizational culture during SPI can therefore potentially contribute to successful outcomes. Müller, Sune Dueholm Kræmmergaard, Pernille Mathiassen, Lars Managing Cultural Variation in Software Process Improvement
Given the additional advantages associated with cropping system diversification, such a strategy provides a more comprehensive approach to lowering yield variability and improving the resilience of cropping systems to multiple environmental In hot and dry years, diversification of corn-soybean rotations and reduced tillage increased yield by 7% and 22% for corn and soybean respectively. Crop diversification strategies increased the probability of harnessing favorable growing conditions while decreasing the risk of crop failure. Introducing small grains into short corn-soybean rotation was enough to provide substantial benefits on long-term soybean yields and their stability while the effects on corn were mostly associated with the temporal niche provided by small grains for underseeded red clover or alfalfa. Although the magnitude of rotation benefits varied with crops, weather patterns and tillage, yield stability significantly increased when corn and soybean were integrated into more diverse rotations. We used parametric and non-parametric approaches to quantify the impact of rotation diversity (monocrop, 2-crops, 3-crops without or with one or two legume cover crops) and tillage (conventional or reduced tillage) on yield probabilities and the benefits of crop diversity under different soil moisture and temperature scenarios.
#STEPHEN FRY SLUGLINE TRIAL#
Using yield and weather data obtained from a 31-year long term rotation and tillage trial in Ontario, we tested whether crop rotation diversity is associated with greater yield stability when abnormal weather conditions occur.
Yield advantages of more diverse crop rotations and their synergistic effects with reduced tillage are well documented, but few studies have quantified the impact of these management practices on yields and their stability when soil moisture is limiting or in excess. Gaudin, Amélie C M Tolhurst, Tor N Ker, Alan P Janovicek, Ken Tortora, Cristina Martin, Ralph C Deen, WilliamĬropping sequence diversification provides a systems approach to reduce yield variations and improve resilience to multiple environmental stresses. Increasing crop diversity mitigates weather variations and improves yield stability.
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