The use of green super rice varieties and harvest waste in sustainable rice farming in tidal lands

Abstract

The practice of increasing rice productivity in tidal swamp lands is guided by synergistic cultivation through integrated crop management (ICM). The objective of the study was to improve technology through the use of crop residue and increase rice productivity in tidal land. The superior varieties from Green Super Rice (GSR) group used was Inpari 42 and 43, combined with straw left in the land, site-specific fertilization, and dolomite application. The study was conducted from April 2017 to September 2018 in the tidal land of Belanti Siam Village. The method of participatory on farm and farmers activities involves 10 farmers on an area of 10 ha. The results proved that the application of 5 t ha−1 of straw waste remains in the land after harvesting, and the addition of 0.5 to 1 t ha−1, dolomite, were able to increase soil pH from 4.0 to 4.2. Application of the straw waste, rice productivity increased by 32% (4.8 t ha−1) after the first application and further 21% (5.1 t ha−1) after the second application for the Inpari 42 variety. The productivity levels of Inpari 43 variety increased 112% (4.8 t ha−1) and 16% (5.6 t ha−1) after the first and the second applications, respectively.