Schield, S.J. and Murphy, L.S. and Herron, G.M. and Gwin, R.E.Jr. (1978) Comparative performance of polyphosphate fertilizers for row crops. Communications in Soil Science and Plant Analysis, 9 (1). pp. 47-58.
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Abstract
In field trials conducted in 1974-5 in Kansas, grain yields of maize at 1 site were increased from 3.24-6.65 t/ha with no P application to 4.32-9.49 t/ha with 40 kg P/ha. Grain yields of sorghum in field trials and DM production and P contents of sorghum and maize plants in growth chambers were also increased with P application. Yield differences between polyphosphate and orthophosphate P sources were not significant. In one growth-chamber study, higher Zn contents in maize were produced with (a) ammonium polyphosphate than with (b) ammonium orthophosphate applications, while in a field trial higher P contents in grain of sorghum were produced with (a) than with (b) or potassium polyphosphate applications. Application of Zn generally increased plant Zn contents in both field and growth-chamber trials
| Item Type: | Article |
|---|---|
| Author Affiliation: | Department of Agronomy, Kansas State University, Manhattan, KS 66506, USA |
| Subjects: | Plant Production |
| Divisions: | Maize Sorghum |
| Depositing User: | Ms K Syamalamba |
| Date Deposited: | 23 May 2012 10:30 |
| Last Modified: | 23 May 2012 10:30 |
| Official URL: | http://dx.doi.org/10.1080/00103627809366787 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/5676 |
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