The agronomy performance and resistance to brown planthopper on superior rice varieties in bali province, indonesia

Abstract

Research was conducted in Subak Guama, Selanbawak Village, Marga District, Tabanan Regency from January up to April 2017 and Subak Dlod Sema, Sading Village, Mengwi District, Badung Regency from January up to May 2017. This study aims to understand the growth, productivity and resistance to brown planthopper pest in superior rice varieties cultivated in Bali Province, Indonesia to substitute Ciherang variety utilization. Research were arranged by using Randomized Block Design with some superior rice varieties as treatment namely Inpari 30 and Inpari 40 for research in Tabanan Regency. And also, Inpari 16, Inpari 24, Inpari 28, Inpari 30, Towuti and Situ Bagendit for research in Badung Regency. Meanwhile, Cigeulis and Ciherang were utilized as comparison. Each of treatments were replicated for 5 times. Variable observed consisted of performance of agronomy and productivity namely plant height, number of tillers, number of grains per panicle, 1000 grains weight and yield. Besides that, resistance to brown planthopper pest also observed by evaluation of damage per plant caused by brown planthopper with using six scale standard of scoring. Results showed that Inpari 40, Inpari 28 and Situ Bagendit were resistant to pest of brown plathopper according to their percentage damage were 1%; 9% and 1% with scoring rate were 1; 3 and 1 respectively. Inpari 40 and Inpari 30 can be considered as candidate to substitute Ciherang according to their agronomy performance and productivity in Bali Province were closest similar to Ciherang variety meanwhile Inpari 40 was most suitable to substitute Ciherang variety according to its agronomy performance, productivity and resistance to pest of brown planthopper.

Agronomic performance, yield and seed production of some new superior varieties using integrated crop management approach in tabanan district, Bali province

“…This is a result of environmental factors that vary in each location. Like Inpari 40 which was cultivated in subak Guama, Tabanan from January to May 2020, it was reported that apart from being resistant to the brown planthopper pest, it was also reported to grow well with plant height, number of productive tillers and yield production higher and significantly different compared to Ciherang [26]. According to [27,28,22] stated that plants that have a height of 90-110 are relatively resistant to lodging, those that are too high are more prone to lodging which can cause decreased yields, increase respiration, reduce nutrient translocation and are susceptible to attack by pests and diseases.…”