Effects of Organic and Chemical Fertilizers on Growth and Yield of Mungbean Line Kamphaengsaen 1 Cultivated in Kamphaengsaen Soil Series

Abstract

A field study on the effects of organic and chemical fertilizers on growth and yield of mungbean line Kamphaengsaen 1 cultivated in Kamphaengsaen soil series was conducted at Kamphaengsaen campus, Nakhon Pathom Province. The sandy loam soil was treated according to the results of physico-chemical analyses and the need for rhizobial-inoculation evaluation. The experimental design used was 6 × 4 factorial in RCB having : organic fertilizer 0.0 ton/rai, rice straw compost 1.5 and 3.0 ton/rai, cattle manure 1.5 and 3.0 ton/rai, and rice straw 2.0 ton/rai ; and 3-6-6 chemical fertilizer 0.0, 3.0, 6.0, 12.0 kg/rai. All treatments were inoculated with Rhizobium. It was found that cattle manure 1.5 ton/rai + chemical fertilizer 6.0 kg/rai, compost 1.5 ton/ rai + chemical fertilizer 6.0 kg/rai and compost 3.0 ton/rai + chemical fertilizer 12.0 kg/rai gave highest dry weight of vegetative parts (growth) : 809.15, 794.71, and 783.62 kg/rai, respectively. Markedly high seed dry weight of 345.55 kg/rai (yield) was also observed with the treatment combination of compost 3.0 ton/rai + chemical fertilizer 12 kg/rai. The high growth and yield would certainly be attributed to the influence of the Rhizobium inoculation and the improvement of soil physico-chemical properties by the organic fertilizers applied. It is suggested that the residual effects of the organic fertilizers should be further investigated.