OPTIMIZING THE GROWTH AND YIELD OF THE RICE VARIETY INPARI-32 THROUGH A COMBINATION OF BIOSAKA ELICITORS AND INORGANIC FERTILIZER

Ferda Anggi Andriani, Nurhidayati Nurhidayati, Istirochah Pujiwati

Abstract


The current rice production system is faced with various pressures, one of which is the inefficient use of inorganic fertilizers. Therefore, a more efficient fertilization system is needed by utilizing elicitors that can increase plant resistance, especially in conditions of limited nutrient availability. This study aims to examine the effect of biosaka elicitor concentration and inorganic fertilizer doses combined with compost on the growth and yield of Inpari-32 rice varieties. This study is a pot experiment in a greenhouse using a Split Plot Design as the main plot is the elicitor concentration (E) with 3 levels, namely: E1 (Concentration 0,2%), E2 (Concentration 0.6%), and E3 (Concentration 0,8%) and as a subplot is the inorganic fertilizer dose treatment (F) consisting of 2 levels, namely: F1 (50% of the inorganic fertilizer dose) and F2 (25% of the inorganic fertilizer dose) plus a control treatment using 100% inorganic fertilizer. The variables observed include growth variables and rice yield components. The results of the study showed that in general the interaction between the concentration of biosaka elicitor and the dose of inorganic fertilizer did not significantly affect the growth of rice plants, but the interaction significantly affected the yield of rice plants. The provision of 0,2% biosaka elicitor and the use of inorganic fertilizers at 50% and 25% of the recommended dose statistically resulted in an increase in dry harvested grain that was equally high, respectively 187,44% and 118,42% while dry milled rice 118,42% and 100,40% compared to the control. The increase in the concentration of biosaka elicitor had a negative effect on the yield of rice plants. Meanwhile, the reduction in the dose of inorganic fertilizers by 25% and 50% of the recommended dose of inorganic fertilizers 25% had no significantly different effects on the growth and yield of rice plants. The results of this study suggest that the use of biosaka elicitor at low concentrations can reduce the use of inorganic fertilizers combined with compost so that it can be an alternative to a more environmentally friendly rice cultivation system.

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References


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