Evaluation of tillage and herbicides for grain sorghum surface residue management in an irrigated wheat-sorghum-fallow cropping sequence

Musick, J.T. and Wiese, A.F. and Dusek, D.A. (1975) Evaluation of tillage and herbicides for grain sorghum surface residue management in an irrigated wheat-sorghum-fallow cropping sequence. Project Report. Texas A & M University, Bushland, Texas.

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Abstract

Graded furrow and level border field tests were conducted to develop a conservation system for management of crop residues from irrigated sorghum during fallow. The effect of residue management or tillage treatments on soil water storage during fallow and yields of the following wheat crop were determined. The most successful "permanent" bed-furrow system of those tested was (1) disk bedding to establish the old bed-furrows in place which largely placed crop residues on the bed; (2) sweep tillage with 42-inch sweeps that completely undercut the 40-inch bed-furrows; and (3) controlling weeds and crop volunteer on bed-furrows until wheat planting time with a sweep-rod weeder. This system increased soil water storage during fallow by 1.1 inches when the soil profile was relatively dry after sorghum harvest. This was adequate to rewet the soil profile and eliminated the need for a preplant, emergence, or early fall irrigation of the subsequent wheat crop. The 1.1 inches additional fallow season storage increased wheat yields 3.3 bushels per acre on a limited irrigation treatment that received 8 inches of irrigation water

Item Type:	Monograph (Project Report)
Author Affiliation:	Texas Agricultural Experiment Station
Subjects:	Plant Production
Divisions:	Sorghum
Depositing User:	Ms K Syamalamba
Date Deposited:	20 Jul 2012 04:43
Last Modified:	20 Jul 2012 04:43
URI:	http://eprints.icrisat.ac.in/id/eprint/6885

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