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Resistance Improvement of Rice Varieties

Mary Olumayowa

The treatment of IR64 variety has a low attack intensity of 3.70% on the last day of observation. The highest intensity of brown plant-hopper pest attack was on sintanur varieties with attack intensity of 34.07%, and the lowest intensity of brown plant-hopper pest was IR66 with 1.11%. It is clear that sintanur varieties are varieties that are susceptible to brown plant-hopper pests. In addition to sintanur varieties, the Cigeulius variety has a criterion susceptible to brown plant-hopper pests, namely 31.48%, the response of plants to pests and diseases caused by the most destructive brown planthopper pest damage to rice plants, according to the resistance assessment more than half of the plants wither and the plants become stunted or die, according to the symptoms caused in the field of research land.