Agronomic Cover Crop Management Supports Weed Suppression and Competition in California Orchards

IF 2.1 2区农林科学 Q2 AGRONOMY

Weed Science Pub Date : 2022-09-01 DOI:10.1017/wsc.2022.48

Steven C. Haring, B. Hanson

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引用次数: 4

Abstract

Abstract Cover crops enhance the biodiversity of cropping systems and can support a variety of useful ecosystem services, including weed suppression. In California orchards, cover crops are typically implemented as annual plants that can replace resident vegetation in orchard alleyways during the rainy winter season. Our research objective was to evaluate cover crop management factors that support a competitive, weed-suppressing cover crop in the unique orchard systems of central California. We conducted two experiments: an experiment evaluating cover crop management intensification in walnuts (Juglans regia L.) and an experiment evaluating multispecies cover crop mixes and planting date in almonds [Prunus dulcis (Mill.) D.A. Webb]. These experiments demonstrate that timely cover crop planting is important for producing an abundant cover crop, and a variety of cover crop management programs can produce weed-suppressing cover crops. However, cover crops do not result in weed-free orchards and should be considered within the context of integrated management programs. The apparent flexibility of orchard cover crop management provides an opportunity to promote other agroecosystem services, with vegetation management and weed suppression as complementary management goals.

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农艺覆盖作物管理支持加州果园杂草抑制和竞争

覆盖作物增加了作物系统的生物多样性，并能支持多种有用的生态系统服务，包括杂草抑制。在加州的果园里，覆盖作物通常是一年生植物，可以在雨季取代果园小巷里的常住植被。我们的研究目标是评估覆盖作物管理因素，这些因素支持加州中部独特的果园系统中具有竞争力的杂草抑制覆盖作物。我们进行了两个试验:核桃覆盖作物管理强化评价试验和杏仁多种覆盖作物混合栽培和种植日期评价试验[Prunus dulcis (Mill.)]。D.A. Webb)。这些试验表明，及时种植覆盖作物对生产丰富的覆盖作物至关重要，多种覆盖作物管理方案可以生产出抑制杂草的覆盖作物。然而，覆盖作物并不能使果园无杂草，应在综合管理方案的背景下加以考虑。果园覆盖作物管理的明显灵活性为促进其他农业生态系统服务提供了机会，植被管理和杂草抑制是互补的管理目标。

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来源期刊

Weed Science 农林科学-农艺学

CiteScore

4.60

自引率

12.00%

发文量

审稿时长

12-24 weeks

期刊介绍： Weed Science publishes original research and scholarship in the form of peer-reviewed articles focused on fundamental research directly related to all aspects of weed science in agricultural systems. Topics for Weed Science include: - the biology and ecology of weeds in agricultural, forestry, aquatic, turf, recreational, rights-of-way and other settings, genetics of weeds - herbicide resistance, chemistry, biochemistry, physiology and molecular action of herbicides and plant growth regulators used to manage undesirable vegetation - ecology of cropping and other agricultural systems as they relate to weed management - biological and ecological aspects of weed control tools including biological agents, and herbicide resistant crops - effect of weed management on soil, air and water.