Effect of Application of Various Concentrations of Chitosan on Growth and Yield of Upland Rice (Oryza Sativa L.) at Different Water Intervals

Pengaruh Aplikasi Berbagai Konsentrasi Kitosan Terhadap Pertumbuhan dan Produksi Padi Gogo (Oryza Sativa L.) Pada Interval Pemberian Air Berbeda

Abstract

The level of national rice production and productivity must still be maintained, especially alert to the threat of environmental stress such as drought and other production barriers including threats due to Climate Change in the future. The study aims to determine and see how the effect of chitosan compound application maintains or increases the growth and production of upland rice at several intervals / intervals of water application as a form of stress conditions on sub-optimal land. This research is a 2-factor factorial experiment with a Completely Randomized Block Design (CRBD) pattern, the first factor is the concentration of chitosan each 0, 0.5, 1.0, and 1.5 ml/L. The second factor is the watering interval of 2, 4 and 6 days respectively. Parameters observed included vegetative parameters of plant height (cm), number of tillers, leaf area, flag leaf area, panicle number and number of seeds per panicle. The results of the experiment showed that the application of chitosan and different irrigation intervals had a significant effect on the number of panicles, the number of seeds per panicle and leaf area.  Chitosan concentration of 0.5 ml/l showed better results on the number of panicles, while the concentration of 1 ml/l showed the highest results for leaf area and number of seeds per panicle as production parameters with an average of 86.37 seeds per panicle under stressful conditions at a watering interval of 6 days. Chitosan application is more effective at concentrations of 0.5 and 1 ml/Liter of water.