Amelioration effect of rice productivity on newly opened paddy field in West Kalimantan

Abstract

The expansion of rice fields in West Kalimantan through the open of new paddy fields has been carried out in several districts and the area has reached 11,296 hectares of the 2016 target of 19,000 hectares. Efforts to expand new open fields for paddy farming, especially in acid sulphate (tidal) land, will still face a number of problems, therefore the application of location-specific technologies based on land conditions and characteristics is very important to note. Efforts need to be made for rice farming in new open fields with drainage water management and washing in paddy fields to reduce the concentration of Fe2+ solubility and other toxic elements, nutrient management with balanced fertilization and the application of ameliorant materials. The aim of this study is to find out the productivity of new open field rice by providing ameliorant material. The methodology used in this study was a randomized block design with the treatment of four treatments namely biochar, manure, and lime each repeated six times. The results of the study showed that the application of biochar gave the highest yield of 5.76 t ha-1 and was different when compared to other treatments.