Produtividade da cultura do milho em função de níveis de água residuária de fecularia de mandioca.

Abstract

The cassava is one of the more cultivated in the state of Paraná, mainly in the northwest area of the state. With that it is obtained a great amount of originated residual effluent of the process of industrialization of the cassava, carting environmental problems and mainly pollution in the courses d`água. Looking for to minimize these caused impacts, it was objectified in this work to study the use of different levels of effleunt as source of nutrients and water for corn crop. The experiment was accomplished in the Campus of Arenito of the State University of Maringá, municipal district of Cidade Gaúcha PR, using the corn crop under the conventional system. The application of water was accomplished 150 m³ ha -1 divided in four applications being applied manually. The levels of effluent were of 0; 150; 300; 450; m³ ha -1 , and the productivities were 4507,59; 4770,42; 4826,27; 4802,31; 4991,14 Kg ha -1 respectively, in the humidity of 13%. After it analyzes statistics we noticed that there was not significant difference among the productions, in function of the levels of effluent, ending that is unviable the application of this, because the productivity just increases 9,7% among 0 and 600m³ ha -1 of application.