Increased rice (Oryza sativa L.) production is no longer sufficient due to climatic factors and soil fertility; overcoming these problems requires irrigation and fertilization technology. The following study investigated the effects of a fertigation system via water management technology along with organic and inorganic fertilization on the productivity of rice (Oryza sativa L.), conducted in 2023 in the South Sulawesi Province, Indonesia. A nested factorial experimental design with three factors, namely, two water management systems (light surface and intermittent), three different types of organic fertilizers (silica, trichocompost, and harmony compost), and three doses of NPK fertilizer (250:150:100, 200:100:50, and 150:50:50), successfully transpired. The results showed the macak-macak irrigation system with a combination of organic and inorganic fertilizers gave the best outcomes for various parameters. These were the number of tillers, panicle length, and the number of panicle branches, 1000-seed weight, the number of hollow grains per panicle, and dry grain weight per plot. The type of organic fertilizer and the dose of NPK increased the percentage of plant height. The best productivity was evident at a dose of NPK 150:50:50 in intermittent irrigation with a combination of trichocompost organic fertilizer with an average value of 13.57 kg plot-1. A combination of light surface irrigation with trichocompost fertilizer gives the best results.
Rice (O. sativa L.), irrigation, organic fertilizers, NPK, silica, trichocompost, yield traits
A considerable increase occurred in the production of lowland rice (O. sativa L.) by using irrigation management and organic and NPK fertilizers. These different inputs used through the fertigation system showed a significant influence on the lowland rice crop.