Response of Maize to Cover Crops, Fertilizer Nitrogen Rates, and Economic Return

Leguminous cover crops are considered part of sustainable agricultural systems. With the development of no-till crop- ping systems, cover crops have been recognized for their ability to provide N for succeeding crops. The objectives of this study were: (i) to determine the N contribution of summer cover crops and double-cropped grain crops following winter wheat (Triti- cum aestivum L.) and N rates to subsequent maize (Zea mays L.) crops’ physiological traits and yield, (ii) to calculate the fertilizer N replacement value, and (iii) to perform economic analyses of the cropping systems.

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