Pulse Brain · Growing Health Evidence Index
Tier 3 — Observational / field trialPeer-reviewedConventional

Effects of interspecific competition on crop yield and nitrogen utilisation in maize-soybean intercropping system

Liang Feng; Wenting Yang; Quan Zhou; Haiying Tang; Qiaoying Ma; Guoqin Huang; Shubin Wang

Plant, Soil and Environment · 2021

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Summary

This field study investigates competitive interactions between maize and soybean in an intercropping system and their effects on crop productivity and nitrogen utilisation efficiency. The research likely demonstrates that strategic management of interspecific competition can enhance total system nitrogen use and yield relative to monoculture production. The findings contribute to understanding how legume-cereal intercropping systems optimise nutrient cycling and reduce reliance on external nitrogen inputs.

Regional applicability

Maize-soybean intercropping is uncommon in UK agriculture, though the underlying principles of legume-cereal competition and nitrogen cycling optimisation may inform diversified cropping systems suited to cooler climates. The findings are most directly applicable to temperate regions investigating legume intercropping with cereals such as wheat or barley.

Key measures

Crop yield (maize and soybean), nitrogen uptake, nitrogen use efficiency, interspecific competition indices, dry matter accumulation

Outcomes reported

The study measured crop yield and nitrogen use efficiency in maize-soybean intercropped plots compared to monoculture controls. It evaluated how competitive interactions between the two species influenced overall system productivity and nitrogen cycling.

Theme
Farming systems, soils & land use
Subject
Agroforestry & intercropping
Study type
Research
Study design
Field trial
Source type
Peer-reviewed study
Status
Published
Geography
China
System type
Arable cereals
DOI
10.17221/665/2020-pse
Catalogue ID
NRmo9rin9c-0k0

Topic tags

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