What does this research mean for the field?

A modified relay intercropping system of planting soybeans into wheat achieves an average soybean yield of 33.9 bushels per acre, though the impact of wheat nitrogen fertilizer rates on this yield is inconsistent across different years. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

The study aims to evaluate the impact of nitrogen fertilizer rates in a modified relay intercropping system on soybean yield.

May 28, 2026

Profitability Plus Environmental Sustainability Equals Modified Relay Intercropping

Key Points

The study aims to evaluate the impact of nitrogen fertilizer rates in a modified relay intercropping system on soybean yield.
Descriptive study measuring the effects of variable wheat nitrogen fertilizer rates on soybean yield.
Soybeans planted into wheat at the heading stage of growth over two years.
Average soybean yield in the modified relay intercropping system was 33.9 bushels per acre.
Significant differences in soybean yield observed between wheat nitrogen rates in 1995.

Abstract

To address the issues of farm profitability and environmental protection, a modified relay intercropping (MRI) system has been studied. In this system, soybeans are planted into wheat at or past the heading stage of growth. A modified relay intercropping system can effectively utilize farm labor, time and equipment, while at the same time reducing herbicide usage in the soybean crop. A descriptive study was conducted to measure the effects of variable wheat nitrogen fertilizer rates on soybean yield. The two year soybean yield in the MRI system average was 33.9 bushels per acre. There were significant differences in soybean yield between wheat nitrogen rates in 1995 only.

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