Abstract
Rice plants is the main food crop in Indonesia. Gresik is one of the ten highest rice producing regions in East Java Province, Indonesia. Rice production in Babaksari Village, Gresik Regency reaches 646 tonnes/year. One of the obstacles in rice production is bacterial leaf blight caused by Xanthomonas oryzae pv. oryzae. This disease can cause yield loss reaching 15-80%. The development of bacterial leaf blight in rice can be caused by several factors, one of which is abiotic factors. This study aims to determine how far the influence exerted by abiotic factors (air humidity, soil pH, and air temperature) on the intensity of bacterial leaf blight. The research was conducted using a survey method, diagonal random sampling, and interviews with farmers in Petissari Hamlet and Sariwonorejo Hamlet, Babaksari Village, Dukun District, Gresik Regency. From the results of this study it was found that the three abiotic factors simultaneously had a significant effect on the intensity of bacterial leaf blight with the regression model obtained, namely: (1) Petissari: Y = -0.050 + 0.587X1 +1.378X2 – 0.789X3; and (2) Sariwonorejo: Y = 8.464 - 3.044X1 +3.745X2 + 1.854X3. The results of path analysis showed that the abiotic factor that had the highest direct effect on the intensity of bacterial leaf blight was soil pH.
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