The utilization of agricultural and livestock waste and the effect on new rice varieties yield on rainfed rice land of Ponjong - Gunungkidul

Assessment Intitutes for Agricultural Technology of Yogyakarta, Stadion Maguwoharjo Street No 22, Wedomartani, Ngemplak District, Sleman, Yogyakarta Special Region, Indonesia

^* Corresponding author: damasusriyanto@gmail.com

Abstract

It is believed that environmentally friendly management of agricultural land through the use of liquid and fermented organic microorganisms can preserve soil fertility, increase the soil microbial population, preserve the environment, as well as increase soil productivity. This research aims to determine the application of various local microorganisms (LMO) to the growth and yield of new rice varieties on the rainfed land of Ponjong-Gunungkidul. Furthermore, it was conducted from February to May 2017, and used a Randomized Completely Block Design (RCBD) with 3 replications and 6 different treatments, namely: M₁ = Local Microorganisms of vegetable waste, M₂=Local Microorganisms of fruit waste, M₃= Local Microorganisms from banana weevils, M₄= Local Microorganisms from urine and cow manure, M₅ = Local Microorganisms from Gliricidia sp leaves, M₆=A mixture of the five local microorganisms ingredients. The results showed that the application of organic fertilizers produced from agricultural and livestock waste and liquid microorganisms was able to increase the total number of the microbial population about seven times on M₆ treatment compare to M₁ treatment, while the Nitrogen fixation bacteria population and Phosphate solubilizing bacteria increased about six and three times, respectively on the soil rhizosphere. The harvested dry grain yield of the variety Inpari 33 (7.78 tons ha-1) showed a higher yield than that of Inpari Sidenuk and Inpari 19, namely 6.93 tons. ha-1 or 7.13 tons ha. The observation of growth and yield components revealed that the number of tillers, the number of filled grains per panicle, the weight of 1000 grains, and plant biomass showed a significant result and higher differences of Inpari 33 variety than the other 2 varieties used in this research by applying a mixture of five agricultural and livestock wastes ingredients (M₆)