Effects of Organic Manures on Growth and Yield of Jack Bean (canavaliaensiformis L.) In Coastal Sandy Soil and Grumusol Soil
This study aims to know the influence of kinds and doses of organic manures on growth and yield of jack bean cultivated both in coastal sandy soil and in grumusol soil. The research conducted in coastal sandy land was carried out in Parangtritis beach area, Yogyakarta, Indonesia having latitude 15 m above sea level. Whereas, the research carried out in grumusol land was conducted in Playen Village, Yogyakarta Indonesia having latitude 250 m above sea level. The research conducted both in coastal sandy soil and in grumusol soil used 3 x 3 factorial experiment arranged in Randomized Complete Block Design with 3 replications. The first factor is the kinds of organic manures consisting of 3 levels: cow manure, goat manure, and chicken manure. The second factor is the doses of manures: 10 ton ha-1, 15 ton ha-1, and 20 ton ha-1. Results of the experiment indicate that there is no interaction between kinds and doses of organic manures on both growth and yield of the plant. In coastal sandy soil, chicken manure can result the highest plant dry (biomass) weight and seed yield per hectare. Dose of manures 20 ton ha-1 can result the highest biomass weight and seed yield per hectare. In Grumusol soil, chicken manure results higher seed yield per ha-1 than that of cow manure as well goat manure. Dose of manures 20 ton ha-1 as well 15 ton ha-1 results higher biomass weight than that dose of 10 ton ha-1. Dose of manures 20 ton ha-1 results the highest seed yield ha-1. Results of the experiment indicate that the growth and yield of jack bean in coastal sandy soil applied by organic manures is better than that in grumusol soil.
Keywords: coastal sandy soil, grumusol, jack bean, organic manures.