The application of effective planting season patterns to increase rice and tiger shrimp cultivation production in brackish water intruded land

Abstract This study aims to test a more productive planting season pattern for rice and tiger shrimp cultivation. The research was conducted in Oring Hamlet, Lawallu Village, Barru Regency, South Sulawesi. The implementation of rice and tiger shrimp cultivation is carried out in ponds infested by brackish water. The land invaded by brackish water was reconstructed into rice fields and ditches. The next process is soil tillage, fertilization, sowing, and rice seed seedbeds for 25 days. The rice fields are planted with rice, a saline-tolerant variety of Irrigated Rice Inbreds 34 (Inpari 34), while caren is stocked with Post Larvae-25 tiger shrimp. Tiger shrimp larvae have adapted to low salinity according to land conditions. The treatments tested were a) cultivation of tiger shrimp at the beginning of the rainy season and b) cultivation of tiger rice and shrimp at the beginning of the dry season. Rice plants are maintained for 105 days. Growth sampling is carried out every 14 days to preserve rice and tiger shrimp. The results showed that rice production at the beginning of the rainy season was 1027 kg, higher than the planting season at the beginning of the dry season of 350 kg. The survival rate (SR) and daily growth rate (DGR) of tiger shrimp obtained at the beginning of the rainy season were 20.16% and 0.18, while the survival rate and daily growth rate of tiger shrimp at the beginning of the dry season were 18.45% and 0.17. The production value of rice and tiger shrimp cultivation is higher in the early rainy season planting season.