Pre-emergence control and interference of voluntary maize plants on a soybean crop in Brazilian Cerrado

The succession of soybean/maize has been largely adopted. Storm damage and crop problems can lead to grain loss, generating maize ear fragments or even whole ears that remain in the soil still display germination viability, resulting occurrence volunteer plants. In this context, present study aimed evaluate interference voluntary plants on soybean investigate susceptibility hybrids pre-emergence herbicides. first step, an experiment was performed evaluating influence plant density spatial distribution soybean. a randomized completely block design (RCBD) with four replications, treatments disposed factorial arrangement (2 x 4) + 1. factor corresponded plants: row between rows; while second adopted infestation densities m-2: 4, 8, 12, 16. additional treatment consisted control without For conducted two locations aiming determine efficacy herbicides maize. Both experiments were installed RCBD split-plot scheme replications. Fomesafen, lactofen, sulfentrazone, chlorimuron-ethyl, diclosulam, flumetsulam, imazethapyr, clomazone, metribuzin, [sulfentrazone diuron], [imazethapyr flumioxazin], herbicide application evaluated main plot. each subplot, DKB310 PRO3™ DKB390 evaluated. No position yield observed. presence population led progressive decrease yield, ranging up 86%, at 16 m-2. displayed stand reduction 82.88% after use diclosulam. Diclosulam better results regarding decreases for both hybrids.