Author : Agustin Alberto Bianchini
Publisher :
ISBN 13 :
Total Pages : 140 pages
Book Rating : 4.:/5 (479 download)
Book Synopsis Variable-rate Liming for the Corn-soybean Rotation by : Agustin Alberto Bianchini
Download or read book Variable-rate Liming for the Corn-soybean Rotation written by Agustin Alberto Bianchini and published by . This book was released on 2001 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Most of the subsoils were calcareous. There was little or no significant crop response to lime. Yield and pH were negatively correlated in years with excessive rainfall, but positively (for corn) or not correlated (for soybean) in years with lower than average rainfall. Significantly less lime (60% less) was applied with the variable-rate method compared with the fixed-rate method. The little or no response to lime and to the variable-rate method may be explained by a usually high subsoil pH and very high small-scale pH variation. Less intensive sampling schemes identified smaller acid and alkaline areas for one field. The variable-rate method based on any of the sampling strategies considered in this study still would apply less lime than the fixed rate method in this soil association. However, the results showed no lime would be needed in soils similar to those included in this study when topsoil (0-15 cm) pH is 5.4 or higher.