The Effect of Decomposition Time and Dosages of Goat Manure on The Regrowth and Yield of Asystasia gangetica (L.) subsp. Micrantha
Abstrak
ABSTRACT
This study aimed to determine the effect and interaction between decomposition time and dose of goat manure on regrowth and yield of Asystasia gangetica (L.) subsp. Micrantha. The research was conducted at the Greenhouse, Sesetan Research Station, Faculty of Animal Husbandry, Udayana University on Jalan Raya Sesetan Gang Markisa. The study lasted for 2 months, using a completely randomized design (CRD) with a factorial pattern. The first factor was the decomposition time: 4 weeks (W4), 2 weeks (W2), 0 week (W0). The second factor consisted of fertilizer doses, namely: 0 ton ha-1 (D0), 10 tons ha-1 (D10), 20 tons ha-1 (D20), 30 tons ha-1 (D30). There were 12 treatment combinations and each treatment was repeated four times, so there were 48 experimental units. The variables observed were growth, forage yield, and plant growth characteristics. The results showed that there was an interaction between decomposition time and dose on all variables except plant height and number of branches. The decomposition time of 0 week actually gave a better response than the decomposition of 2 and 4 weeks. Dosage of 20 tons ha-1 gave the highest yield on the variables of plant height, number of leaves, stem dry weight, leaf dry weight, and the ratio of leaf dry weight to stem dry weight. Asystasia gangetica (L.) subsp. Micrantha requires proper dosage levels to provide regrowth and better yields. It was concluded that the decomposition time of 0 week and a dose of 20 tons ha-1 gave the best response to the regrowth and yield of Asystasia gangetica (L.) subsp. Micrantha.
Keywords: Asystasia gangetica (L.) subsp. Micrantha, decomposition, yield, goat manure, regrowth
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