|dc.description.abstract||Irrigation water management and cultivation in rice planting at Garahan are still traditional and giving low production. The conventional
method applied by farmers need a lot of water to meet the needs of irrigation water, in the most cases, rice can only be grown in the rainy season.
SRI method is a highly efficient water method of farming and allowing to planting rice in any season. The goal of this research was to examine
difference of water requirement for rice crop irrigation using SRI, semi SRI, and conventional methods and to determine the effect of different
methods performances against many tillers of rice and grain productivity. The method used was a randomized complete block design with two kinds
of variables the main variables and support variable. The main variables were divided into two independent variables and the dependent variable.
The independent variables were discharge entry (Qin), discharge exit (Qout), and percolation (P). The dependent variables were rice tillers, and
grain productivity. Support variables were max temperature (Tmax), min temperature (Tmin), long time solar radiation (n), humidity (RH), wind
speed (Uz) and rainfall (R). Measurement data were analyzed using ANOVA and Duncan's test. The result of this research were SRI and semi SRI
methods using less water than the water requirement, because of unsuitable provision of water resulting the least rice tillers and the least grain
productions. Conventional method was using the water same as its requirement giving good result such as many tillers of rice and many grain