Grain sorghum response to lime, phosphorus, and potassium

Lutrick, M.C. and Martin, F.G. (1977) Grain sorghum response to lime, phosphorus, and potassium. Proceedings, Soil and Crop Science Society of Florida, 36. pp. 55-57.

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Liming Florida acid Coastal Plains soils initially with more than 2.24 kg/ha of dolomitic limestone did not increase sorghum yields except where no K was applied. Liming increased the soil pH as well as the Ca and Mg content of the soil. On average, the addition of K increased sorghum grain yields. Possibly annual applications of 20 kg/ha would have been adequate because in some years there was no yield response to applied K. The maximum amount of applied P required under the conditions of this study was 55.1 kg/ha. An acid Coastal Plains soil with 200 ppm Ca, 40 ppm Mg, 80 ppm K, and 37 ppm P could be expected to produce a maximum average yield of grain sorghum of 5200 kg/ha. This maximum average yield has been exceeded in many other experiments when rainfall distribution and weather conditions at harvest were good. Yields of up to 8000 kg/ha have been obtained under these conditions

Item Type: Article
Author Affiliation: Agricultural Research Centre, Jay, Florida 32565, USA
Subjects: Plant Production
Divisions: Sorghum
Depositing User: Ms K Syamalamba
Date Deposited: 04 Sep 2012 07:22
Last Modified: 04 Sep 2012 07:23

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