Effects of Organic Fertilizers and Green Manure on Growth and Yield of Kaw Dok Mali 105 Rice Cultivar

Abstract

This research aimed to study the types of organic fertilizers and green manures on the growth and yield of Kaw Dok Mali 105 rice cultivar. The experiment was designed in a randomized complete block design, consisted of 8 different organic fertilizer treatments in the rice field: 1) no fertilizer, 2) 0.5 tons per rai of commercial organic fertilizer, 3) 1 ton per rai of commercial organic fertilizer, 4) 1 ton per rai of manure compost, 5) 2 tons per rai of manure compost, 6) planted Rotalaria juncea at the seed rate of 5 kilograms per rai and it has been plowed under, 7) planted R. juncea at the seed rate of 5 kilograms per rai and it has been plowed under and 0.5 tons per rai of commercial organic fertilizer, 8) planted R. juncea at the seed rate of 5 kilograms per rai and it has been plowed under, and 1 ton of manure compost. The growth and yield data of the rice were collected. The results showed that treatment no. 8 has the highest tillering (9 tiller per hill) and plant height (121.00 cm). Treatment no. 3, 5 and 8 gave the highest rice yield (541.00, 611.43 and 560.80 kilograms per rai, respectively). Treatment no.8 has the highest profit, which is 1,348 baht per rai. From this experiment, method no.8, planted Rotalaria juncea at the seed rate of 5 kilograms per rai and it has been plowed under, and 1 ton of manure compost was recommended because the rice has well glowed, high yields and made the most profit.