Wheat yield and grain protein variation within an undulating soil landscape

摘要: The objective of this study was to compare landform element complexes (LEC) and soil series as discrete management units for variable rate N fertilizer application. Crop response attributes including grain yield, protein concentration were studied in ten intensively sampled transects an undulating glacial till soil-landscape near Miniota, Manitoba. In 1997, a year with growing season precipitation 37% below average, median yield tended increase both convergent character the landscape (upper mid > lower), lowest Varcoe series. 1998, 62% above average. Grain responses greater, due part declining fertility check a...