Application of Intermittent Irrigation to Improve Growth and Yield of Various Rice Varieties (Oryza sativa L.)

Abstract

Intermittent irrigation can save water use in rice cultivation, which is essential, especially during the dry season. This study aims to improve the physiology of the growth and yield of rice in various varieties by applying intermittent irrigation. The research was conducted from February to June 2019 in the experimental field of the Faculty of Agriculture, Universitas Muhammadiyah Yogyakarta. The research used a factorial experimental method 3 x 4 strip plots arranged in a Completely Randomized Block Design with three replications. The factor I rice varieties consist of Cempo Merah, Inpari 23, Sintanur, and Inpari 42. Factor II is the irrigation system consisting of continuous flooding, ten days of inundation, five days of drying, seven days of inundation, and three days of drying. There is an interaction between types of irrigation and rice varieties on the number of tillers. In Ten-day watering five-day drying, Sintanur and Inpari 42 variety produce more tillers than Inpari 23. On Seven days watering five-day drying, the Inpari 42 variety produces more tillers than Inpari 23. There are the differences in the responses of various rice varieties to the Specific Leaf Weight and yield. Specific Leaf Weight rice Cempo Merah varieties are higher than, Inpari 23, Sintanur and Inpari 42. Rice yield of Inpari 42 variety is higher than Cempo Merah, Inpari 23, and Sintanur varieties. Roots with watering seven days watering, three days of drying is longer than Ten-day watering five-day drying. Roots with watering Ten-day watering five-day drying is longer than conventional.

Phenology, gas exchange, biomass accumulation, and irrigated rice yield under alternative irrigation managements

“…Roots play a pivotal role in water and nutrient absorption by directly linking the plant to the soil, thereby influencing photosynthesis and energy production. In plants with extensive and deep root systems, which can be achieved through intermittent flood irrigation (Isnawan et al, 2022), the photosynthesis process tends to operate more efficiently. Isnawan et al (2022) further determined that leaf-specific weight remains unaffected by irrigation management.…”

“…In plants with extensive and deep root systems, which can be achieved through intermittent flood irrigation (Isnawan et al, 2022), the photosynthesis process tends to operate more efficiently. Isnawan et al (2022) further determined that leaf-specific weight remains unaffected by irrigation management. The number of tillers is higher when intermittent flood irrigation is employed, although this increase does not correlate directly with yield.…”

“…Isnawan et al. (2022) further determined that leaf‐specific weight remains unaffected by irrigation management. The number of tillers is higher when intermittent flood irrigation is employed, although this increase does not correlate directly with yield.…”

“…Importantly, intermittent flood irrigation does not compromise rice plant transpiration during dry periods when compared to continuous flood irrigation (Reavis et al., 2021). Moreover, intermittent flood irrigation allows for the attainment of grain yield values like those achieved with continuous flood irrigation (Isnawan et al., 2022; Reavis et al., 2021), thus reducing production costs associated with water replenishment.…”

Nitrous oxide emission from a flooded tropical wetland across a vegetation and land use gradient

“…As a result, continuous flooding may not be feasibly applied across all rice paddies due to differences in rice varieties grown. Indeed, studies have found higher rice yields in rice cropping systems subjected to intermittent flooding (Pascual & Wang 2016;Isnawan et al 2022). Yet, intermittently flooded systems have also been reported to be hotspots for N 2 O emission (Liengaard et al 2013).…”