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Pulse trials aim to optimise brown manuring

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Morava vetch sown in mid-April was an effective option for weed control by brown manuring.. Field pea varieties sown in mid-May were suitable for both brown manuring and crop-topping.. NSW DPI research agronomist Luke Gaynor says there is a clear choice to make when brown manuring - either spray out the legume in early spring at the very early flat pod growth stage or wait until plants reach peak biomass to help maximise nitrogen fixation...