Factors affecting rice yield productivity in tidal swamp of South Sumatra

Abstract

Agricultural land expansion in tidal swamp rice (Oryza sativa L.) has not been optimally utilized. The objective of the study was to examine the relationship between soil, climate, and other factors that affect rice productivity. The study was conducted in Muara Telang Sub-district and used the purposive sampling method from 30 respondent farmers. The results showed that rice production was lower in the dry season (DS) than wet season (WS) (r2=0.96) which was closely related to water availability. A low percentage of total pore space (TPS) and availability of P2O5 have an impact on rice yield in WS while rice yields at DS 2019 are directly related to N applications. Low temperatures have a positive impact on the presence of Cnaphalocrocis medinalis and Gryllotalpa brachyptera but high humidity has a major impact on the presence of Rattus argentiventer and Bacterial leaf blight. On the other hand, the income received by farmers is doubled in WS compared to DS (R/C ratio 2.4 Vs. 1.2). Nutrient management, soil pore space, and climate information can affect rice productivity in tidal swamp rice fields that are economically beneficial in WS, however further research is needed for DS condition.