THE LEAF GREENNESS AND YIELD COMPONENTS OF PADDY PLANTS INFLUENCED BY BIOLOGICAL FERTILIZER WITH AND WITHOUT COMBINATION OF INORGANIC FERTILIZERS

Abstract

The use of biological fertilizer seems to be most important in creating environments for sustainable agriculture. This fertilizer is made up of living bacteria cells which depending on the soil conditions, are able to reproduce. In soil these bacteria have the greatest benefits for agricultural crops. They can increase the level of nitrogen in soil after converting the atmospheric nitrogen. Other species of these bacteria increase the availability of essential nutrient, Phosphorous. However, the availability of these two essential nutrients (nitrogen and phosphorous) in the soil is one factor in plant growth and yields. The second important factor is the ability of the roots to absorb these nutrients. In this aspect, the volume and type of roots of the respective plant also contribute significantly to plants growth as well as provision of expected yields. This study was carried on from September to December, 2018 at Sawah Baru, Bogor Agricultural University. The objectives were to observe the influence of biological fertilizer with and without combination of NPK and Urea fertilizers to enable rice plants to attain leaf green level which could produce expected paddy yields. The interaction effect between fertilizer treatments and the paddy varieties was also observed. Experiment design was two factor treatments arranged in a split plot. Fertilizer as main plot and paddy varieties as sub-plot laid in a Completely Randomized Block Design in 3 replications. The results showed significant differences in leaf green conditions and 1,000 grains weight of paddy.