RESPONSE OF MAIZE (Zea mays) TO A LOAMY SAND AMMENDED WITH RICE HUSK AT OBUDU, SOUTH EASTERN NIGERIA
AbstractThe scarcity or non-availability of inorganic fertilizer in the third world is a great impediment to achieving increased production of maize today. An alternative to this is to increase soil fertility with readily available and affordable materials. This study was conducted using a Randomised Complete Block Design (RCBD) with the following rates of rice husk to boost soil fertility for improved maize production 0 tha-1 (T1), 16.7tha-1, (T2), 33.3 tha-1 (T3), 50.0 tha-1 (T4), 66.7tha-1 (T5). From result obtained for grain yield for the two years, T4 gave optimum yield. In 1999 treatments T1, T2 and T3 were not significantly different from each other while in 2000, treatments T2 and T3 were significantly different (P<0.05) different from T1. Plant heights obtained at three weeks after planting in 1999 showed that T3, T4 and T5 were significantly different (p <0.05) followed by treatment T2 and T1. The results were the same for treatments T3, T4 and T5 at five weeks after planting while treatments T1 and T2 had the same effect. At 7 weeks after planting treatments T4 and T5 had the same effect, but were the best followed by treatment T3, T2 and T1 in that order. However, in 2000, treatments T3, T4 and T5 were the best followed by treatment T1 and T2. For cob length, the results were not too distinct while treatment effect on cob girth was not significant.
KEY WORDS: Rice husk, organic fertilizer, soil fertility, tropical soil
Global Journal of Agricultural Sciences Vol.2(2) 2003: 110-112