Akinrinde, E.A. and Teboh, E. and Obigbesan, G.O. (2005) Evaluation of ground phosphate rocks for growth and yield of maize (Zea mays) and soybean (Glycine max) on a tropical alfisol in Nigeria. Asian Journal of Plant Sciences, 4 (5). pp. 513-518.
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Abstract
Experiments were conducted to study the best application time and the effects of P fertilizer sources on maize and soyabean production. The application times (AT) were one week before planting (1 WBP), at planting (AP), one week after planting (1 WAP) and 2 WAP. The P sources, PS (Ogun Rock Phosphate (ORP), 31.4% P2O5; Crystallizer (Cryst), 20.2% P2O5; Sokoto rock phosphate (SRP), 34.2% P2O5 and Single Super Phosphate (SSP), 18% P2O5) were applied at 50 kg/ha apart from the control. Maize was grown in the first experiment while soyabean was the test crop in the second and third experiments. No fertilizer was applied in the last experiment. In the first experiment, crop yields were highest when ORP, Cryst and SSP were applied 1 WAP while it was best at 2 WAP with the application of SRP. For the second experiment, crop yields were highest for Cryst and ORP applied 1 WBP and 1 WAP for SRP and SSP. Considering the effectiveness of the rock phosphate, ORP performed best in both the first and second experiments apart from SSP in the first experiment. The decreasing order of crop yield in the third experiment was Cryst > ORP > SRP and SSP even though there was no significant difference. Since significant differences could not be established for the P sources, times of application or for the residual effect, any of the RP could be used as P source and also for residual effect. Similarly, any of the times of P application was suitable for both crops
| Item Type: | Article |
|---|---|
| Author Affiliation: | Department of Agronomy, University of Ibadan, Ibadan, Nigeria |
| Subjects: | Plant Production |
| Divisions: | Maize Soyabean |
| Depositing User: | Mr T L Gautham |
| Date Deposited: | 11 Jan 2011 22:20 |
| Last Modified: | 11 Jan 2011 22:20 |
| Official URL: | http://scialert.net/qredirect.php?doi=ajps.2005.51... |
| URI: | http://eprints.icrisat.ac.in/id/eprint/1337 |
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