Associational resistance through intercropping reduces yield losses to soil-borne pests and diseases.
Associational resistance through intercropping reduces yield losses to soil-borne pests and diseases.
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DOI：
10.1111/nph.18302
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发表时间：
2022-09
期刊：
影响因子：
9.4
通讯作者：
Redeker, Kelly R.
中科院分区：
文献类型：
--
作者：
Chadfield, Victoria G. A.;Hartley, Sue E.;Redeker, Kelly R.
关键词：
对食草动物和病原体攻击的联合抵抗是一种有据可查的生态现象，如果应用于农业，可以减少病虫害对作物产量的影响，而无需求助于农药。由于已发表的文献报道的结果存在差异，通过间作、同时种植多种作物作为可持续控制方法的联合抗性的价值仍不清楚。我们进行了一项荟萃分析，以定量评估间作对目标植物对植物寄生线虫和土传疾病的抗性的益处。我们发现，间作可将线虫对重点作物的损害降低 40%，将发病率降低 55%。间作功效随生物变量（例如田间施肥状况和间作科系）和方法（包括研究样本是盆栽还是田间）的不同而变化。使用间作进行线虫控制足以抵消间作造成的重点作物产量下降，使间作成为一种可行的农业工具。我们确定了支撑间作成功的关键驱动因素，并指出了未来研究提高功效的领域。这项研究还强调了利用植物与敌人相互作用的生态知识来改善农业和景观可持续性的潜在好处。
Associational resistance to herbivore and pathogen attack is a well documented ecological phenomenon and, if applied to agriculture, may reduce impact of pests and diseases on crop yields without recourse to pesticides. The value of associational resistance through intercropping, planting multiple crops alongside each other, as a sustainable control method remains unclear, due to variable outcomes reported in the published literature. We performed a meta‐analysis to provide a quantitative assessment of benefits of intercropping for target plant resistance to plant‐parasitic nematodes and soil‐borne diseases. We found that intercropping reduced damage to focal crops from nematodes by 40% and disease incidence by 55%. Intercropping efficacy varied with biological variables, such as field fertilisation status and intercrop family, and methodology, including whether study samples were potted or in fields. Nematode control using intercropping was sufficient to offset reductions in focal crop yield from intercrop presence, making intercropping a viable agricultural tool. We identify key drivers for underpinning the success of intercropping and indicate areas for future research to improve efficacy. This study also highlights the potential benefits of harnessing ecological knowledge on plant–enemy interactions for improving agricultural and landscape sustainability.
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