Sunday, 19 June 2005
28

This presentation is part of: Soils Posters/Reception

Grain Sorghum Fertility Studies in Arkansas.

Leonel Espinoza1, Jason Kelley2, and Paul Ballantyne1. (1) University of Arkansas Cooperative Extension Service, PO Box 391, Little Rock, AR 72203, (2) PO Box 391, Little Rock, AR 72203

Grain sorghum is grown in Arkansas as a low input crop, often under non-irrigated conditions and in “marginal” land, such that the state average yield oscillates between 80 – 85 bu/A (less than 5000 lb/A). However, yields from fields enrolled in the Research Verification Program have been as high as 150 bu/A (> 8000 lb/A). Grain sorghum rotational benefits in fields where nematodes may limit yields, in addition to uncertainties associated with the potential impact of soybean rust has created a renewed interest in this crop. This paper presents results from several studies aimed at maximizing the yield potential of grain sorghum.

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