Controlling Diplodia Using Trichocompost And Sulfur-Calcium To Improve Siam Citrus Fruit Yield In Bali

Diplodia is one of the main diseases which frequently infects siam citrus plants in Bali. The aim of this research was to obtain the optimum composition of trichocompost and sulphur-calcium suspension as a fungicide treatment to suppress the infection of Diplodia disease and increase the fruit yield. The research was conducted in Kintamani, Bali from January-December 2016 in which different compositions of trichocompost and sulfur-calcium were used. The results revealed that the treatment of 60 kg trichocompost coupled with 125 g sulphur-calcium suspension was able to reduce the percentage of Diplodia infection and suppress disease intensity up to 21.21% and 2.05%, respectively. It was also demonstrated the highest contribution to the emergence of new shoots (40.96) and the appearance of fruits set (89.30) which was not significantly different from treatment of 40 kg trichocompost and 125 g sulphur-calcium suspension i.e. 35.8 and 77.2, respectively. The treatment of 60 kg trichocompost and 125 g sulphur-calcium suspension increased the yield by 6.1 pieces significantly higher than the farmers' conventional treatment.Therefore, application 40-60 kg trichocompost with addition sulphur-calcium suspension per plant significantly reduces the percentage of Diplodia as well as increasing yield components.