Study Relationship of Rice Chlorophyll Content Index (CCI) Value with Rice Prediction Yield Production on Rice Cultivation in West Sumatera

Abstract

Yield mapping is conducted to inform farmers about the variability of production that is used as an illustration of the yield of rice plants in a particular rice field area, so that it can be a reference for farmers in increasing their agricultural yields for the next planting season and determining the point area of land that produces the highest production. Through a yield mapping, the production results in an area of land can be predicted by looking at the correlation value and mapping between the values of Chlorophyll Content Index (CCI) of rice plants at different ages and yields at each point of observation area. Measurement of CCI values was carried out on rice plants at the age (25, 40, 60, and 70 DAP). Measurement of CCI values was carried out at 20 observation points in the Banda Langik rice field area located on the Sungai Bangek, Lubuk Minturun, West Sumatra. CCI values and yields of rice plants obtained on each field are then processed into maps of CCI values and yield mapping using GIS (Geographic Information System) applications with the kriging method. Based on research that has been carried out during one planting season shows that the CCI value has a relationship with the yield of rice plants. This is evidenced by the correlation values generated (r) 25 DAP (r = 0.815), 40 DAP (r = 0.877), 60 DAP (r = 0.810) and 70 DAP (r = 0.917). Based on the mapping of CCI values and mapping of production results, it was shown that production results in a land area could be predicted based on an overview of the CCI values of rice plants at different ages.