Gonggo M, Bambang and Hasanudin, Hasanudin and Yuni , Indriani (2006) ROLES OF N AND P FERTILIZERS ON N UPTAKE, N EFFICIENCY, AND YIELD OF GINGER GROWN UNDER RUBBER TREE STANDS. JIPI, 8 (1). pp. 61-68. ISSN 1411-0067
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Abstract
Area under rubber tree stands has an economic potential for production of ginger if proper fertilizer application is implemented. Purpose of this study was to determine the effects of N and P fertilizers application on N uptake, N efficiency and yield of ginger grown under rubber tree stands. The experiment was laid in RCB design with a factorial arrangement of the treatments, consisted of four levels of N fertilizer (0, 3.375, 6.75, and 10.125 g plant ) and three levels of P fertilizer (0, 9, and 18 g plant ). There were three replications and 18 plant on each experimental unit. Results indicated that there were significant interaction effects between N and P fertilizers on N uptake and N efficiency. The expected maximum N efficiency of ginger plant was 14.01% as N fertilizer applied alone at 12.56 g plant-1. Similarly, the highest N uptake (1.170 g plant-1) was observed on N application at 13.755 g plant-1 without P. Weight of ginger rhizome was predicted to increase 0.2203 g plant-1 on 1 % increment of N uptake efficiency.
| Item Type: | Article |
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| Uncontrolled Keywords: | nitrogen fertilizer, phosphor fertilizer, nitrogen uptake, nitrogen efficiency, ginger rubber |
| Subjects: | S Agriculture > S Agriculture (General) |
| Divisions: | Faculty of Agriculture > Journal |
| Depositing User: | Mr. Amwaluddin Lubis |
| Date Deposited: | 08 Apr 2012 22:12 |
| Last Modified: | 28 Apr 2012 11:38 |
| URI: | http://repository.unib.ac.id/id/eprint/45 |
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