THE EFFECT OF VARIOUS ELICITOR CONCENTRATIONS AND ZnO NANOPARTICLES ON THE GROWTH AND YIELD OF RICE (Oryza sativa L.) VARIETY INPARI 32

Dewi Ajeng Kartika, Nurhidayati Nurhidayati, Sunawan Sunawan

Abstract


The decline in rice production is caused by the inability of conventional cultivation systems to increase productivity. Based on these problems, it is necessary to implement an environmentally friendly sustainable agricultural system using organic fertilizers enriched with nanoparticles. This study aims to determine the effect of biosaka elicitors combined with ZnO nanoparticles on the growth and yield of Inpari 32 rice varieties. This study used a Split Plot Design consisting of 2 factors. Factor I as the main plot is the elicitor concentration (E) consisting of 3 levels, namely: E1 (Elicitor 30 ml/15 liters of water), E2 (Elicitor 60 ml/15 liters of water) and E3 (Elicitor 90 ml/15 liters of water). While Factor II as a subplot is a fertilization treatment (F) consisting of three levels, namely: F1 (ZnO-NPs 100 mg/kg compost), F2 (ZnO-NPs 200 mg/kg compost) and F3 (ZnO-NPs 300 mg/kg compost) with the addition of 25% inorganic fertilizer. As a control is 100% inorganic fertilizer without elicitor and compost. The results showed that the provision of 30 ml/15 liters of elicitor combined with 100 mg/kg ZnO nanoparticles gave the best effect on the growth and yield of Inpari 32 rice varieties. The elicitor concentration of 30 ml/15 liters of water gave a positive effect on the growth and yield of Inpari 32 rice varieties, with a potential dry harvested grain yield of 12.25 tons/ha and a potential dry milled rice yield of 9.93 tons/ha. The application of 100-200 mg/kg of ZnO nanoparticles to compost had a positive effect on leaf area, number of filled grains per panicle, oven-dry weight of grain per hill, and dry weight of grain per hill. These results suggest that the use of elicitors and nanoparticles at low concentrations can reduce inorganic fertilizer use by 75%, thus supporting an environmentally friendly rice cultivation system.

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