Abstract

This study was conducted in 2015 in Ndop, Ngoketujia Division in the North-West region of Cameroon. Four varieties of rice were used: NERICA3, NERICA7 (upland rice), NERICA36 and NERICA42 (lowland rice). Two types of fertilizers N-P-K (23-10-05 and N-P-K (20-10-10) were tested at different doses (0 kg-contol; 180 kg, 200 kg, 220 kg-treatments). The trial was set up in a Randomized Complete Block Design (RCBD) in a manner following conventional methods. Application of fertilizers was done at 21 and 51 days after planting (DAP). The growth parameters were evaluated weekly while yield parameters were collected at maturity. The fertilizer N-P-K (23 10 05) gave a better growth with appropriate doses compared to N-P-K (20 10 10) in all the varieties used in this study while fertilizer N-P-K (20 10 10) gave a better yield than N-P-K (23 10 05) in the same varieties. In terms of output of rice, fertilizer N-P-K (20 10 10) proves better at dose 200 kg than fertilizer N-P-K (23 10 05) at the same dose. For good growth and yield the use of appropriate doses of fertilisers will significantly improve the yield of rice.

Key words: Rice varieties, fertilisers, fertilizers doses.