Chemical management of green manure for succession of sugar cane crop in minimum tillage system

Abstract

Studies on chemical management of green manure are scarce in national literature. This work aimed to evaluate the herbicides efficiency in chemical control of green manure used in succession with sugarcane crop, in minimum cultivation system. Two experiments were conducted with Mucuna aterrima and Crotalaria spectabilis species, arranged in a randomized complete block design with 19 treatments and four replicates. The treatments were composed by three distinct rate for herbicides: glyphosate+2,4-D+carfentrazone-ethyl; glyphosate+2,4-D; glyphosate+MSMA; 2,4-D+carfentrazone-ethyl; 2,4-D; 2,4-D+picloran and check without herbicide application. Chemical control with tank mixture between glyphosate+2,4-D+carfentrazone-ethyl and glyphosate+2,4-D were the outstanding alternatives on of M. aterrima and C. spectabilis management, allowing the possibility of succession planting sugar cane crop in minimum cultivation system, with economy of operations of plowing and harrowing.