Cultivo de arroz de terras baixas irrigado por pivô central

Abstract

The production scenario for rice cultivation in Brazil is very promising, with an estimated production of 11.6 million tons in the 2020/2021 crop, featuring an increase of 4% compared to the previous crop (2019/2020 crop), of this total 10.7 million tons come from irrigated crops (92.2%) and only 0.9 million tons from rainfed crops (7.8%). One of the pillars that determine the construction of high rice productivity is irrigation, due to the high requirement of this resource by the crop throughout its production cycle. Sprinkler irrigation with the use of a center pivot emerges as a method that has the main objective of increasing the efficiency of water use in a commercial rice crop, seeking to combine the reduction of water consumption and the increase in the efficiency of its use . Given the above, the objective of the work was to describe the theme of sprinkler irrigation in rice cultivation, seeking to assemble a history of use and list the main advantages and disadvantages of the method. To organize the work, research was conducted in scientific journals found in the main indexed databases, theses and dissertations from repositories of public and private universities, as well as books and technical circulars from research institutions. The rice cultivation system with central pivot irrigation has been solidifying in the State of Rio Grande do Sul, especially in the rice-growing region of the western border of the State. This solidification is due to the researches and studies carried out on the subject and the interest of producers in seeking new technologies for their cultivation areas.