Allelopathic potential of winter and summer cover crops on the germination and seedling growth of Solanum americanum

Allelopathic potential of winter and summer cover crops on the germination and seedling growth of Solanum americanum

Sustainable weed management strategies are important for reducing chemical inputs and development of weed resistance. This study aimed to evaluate the effect of extracts from winter cover crops (cereal rye, black oat, forage turnip, and common vetch) and summer cover crops (jack bean, velvet bean, a...

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Bibliographic Details
Published in:International journal of pest management Vol. 69; no. 3; pp. 232 - 240
Main Authors: Galon, Leandro, Rossetto, Emanuel Rodrigo de Oliveira, Zanella, Ana Carolyna Enderle, Brandler, Daiani, Favretto, Emanuel Luis, Dill, Jaqueline Mara, Forte, Cesar Tiago, Müller, Caroline
Format: Journal Article
Language:English
Published: Abingdon Taylor & Francis 12-01-2021
Taylor & Francis Ltd
Subjects:
Agricultural practices
allelopathy
Beans
Cereal crops
Controlled conditions
Cover crops
Crops
Germination
germination rate index
Herbicide resistance
Herbicides
Jack beans
Mucuna cochinchinensis
Rye
Secale cereale
Seed germination
Seedlings
Seeds
Solanum americanum
Summer
Vegetables
Weed control
Weeds
Winter
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Summary:Sustainable weed management strategies are important for reducing chemical inputs and development of weed resistance. This study aimed to evaluate the effect of extracts from winter cover crops (cereal rye, black oat, forage turnip, and common vetch) and summer cover crops (jack bean, velvet bean, and brown hemp) on seed germination and seedling growth of glossy nightshade (Solanum americanum Mill), under controlled conditions. The aqueous extracts were produced from the shoot biomass of cover crops at concentrations of 0%, 25%, 50%, 75%, and 100%. Fifty S. americanum seeds were placed on Germitest paper moistened with 15 mL of each extract concentration. Cereal rye extract at the highest concentration reduced total germination to 43% and caused a 62% reduction in the germination rate index (GRI) of S. americanum. Velvet bean extract reduced germination, GRI, and seedling growth of S. americanum from the lowest concentration applied, while concentrations of 75% and 100% completely suppressed seedling development. Decomposing cereal rye and velvet bean cover crops have potential to suppress germination and growth of S. americanum. Efficient cover crops could reduce herbicide applications, and thus improve herbicide resistance management.
ISSN:0967-0874
1366-5863
DOI:10.1080/09670874.2021.1875152