Abstract

RUIZ-SANCHEZ, Michel; MUNOZ-HERNANDEZ, Yaumara; DELL´AMICO, José M.  and  POLON-PEREZ, Ricardo. Irrigation water management in rice crop (Oryza sativa L.) by transplant, it’s effect on the agricultural and industrial performance. cultrop [online]. 2016, vol.37, n.3, pp. 178-186. ISSN 1819-4087.  http://dx.doi.org/10.13140/RG.2.1.2649.8800.

Rice cultivation transplant traditionally spends most of its life cycle with flooding and exhibits high adaptability to these conditions, consequently its production consumes a lot of water, although less than in the cultivation by direct seeding. This research was conducted to evaluate the effect of irrigation water management in the agricultural and industrial yield of rice transplanting technology. Plants remained in flooded conditions throughout the cycle and plants undergoing suspension of the water surface for a period of 15 at three different times tillering stage were evaluated. The suspension of the water level increased agricultural yields between 16 and 32 % over the flooded control and industrial yield was 67 % on average. The highest percentage of whole grains were obtained in the treatments under suspension of the sheet, achieving the best results with the suspension at 30 DDT. This operation allows water savings of approximately 1 931,4 m3 ha-¹, for the flooded treatment. The water saved would increase the area under irrigation by 11,19 % for rice cultivation

Keywords : water; saving water; rice; agronomic yield; irrigation.

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