Allelopathic Potential of Green Manure Cover Crops on Germination and Early Seedling Development of Goose Grass [Eleusine indica (L.) Gaertn] and Blackjack (Bidens pilosa L.)

Green manure cover crops (GMCCs), which are recommended for improving soil fertility, also have the potential of reducing weed populations in cropping systems through allelopathy. The objective of this study was to evaluate the effect of eight GMCCs on the germination and seedling development of two...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Joyful Tatenda Rugare, Petrus Jacobus Pieterse, Stanford Mabasa
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi Limited 2021
Materias:	Agriculture (General) S1-972
Acceso en línea:	https://doaj.org/article/b0421fae5ff04e199959a2e35d2304c2
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:b0421fae5ff04e199959a2e35d2304c2
record_format	dspace
spelling	oai:doaj.org-article:b0421fae5ff04e199959a2e35d2304c22021-11-15T01:19:14ZAllelopathic Potential of Green Manure Cover Crops on Germination and Early Seedling Development of Goose Grass [Eleusine indica (L.) Gaertn] and Blackjack (Bidens pilosa L.)1687-816710.1155/2021/6552928https://doaj.org/article/b0421fae5ff04e199959a2e35d2304c22021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/6552928https://doaj.org/toc/1687-8167Green manure cover crops (GMCCs), which are recommended for improving soil fertility, also have the potential of reducing weed populations in cropping systems through allelopathy. The objective of this study was to evaluate the effect of eight GMCCs on the germination and seedling development of two weeds of divergent morphology, namely, goose grass [Eleusine indica (L.) Gaertn] and blackjack (Bidens pilosa L.). Aqueous leaf, stem, and root extracts of hyacinth bean (Lablab purpureus L), red sunnhemp [Crotalaria ochroleuca (G.) Don], showy rattlebox (Crotalaria grahamiana Wight & Arn.), common bean (Phaseolus vulgaris L.), common rattlepod (Crotalaria spectabilis Roth.), radish (Raphanus sativus L.), tephrosia (Tephrosia vogelii L.), and black sunnhemp (Crotalaria juncea L.) at 0, 1.25, 2.5, 3.75, and 5% wv−1 were applied to weed seeds in Petri dishes to determine their effect on germination, radicle and plumule growth, and germination vigor index. The experimental design was 3(tissue types) ∗ 5(concentrations) treatment combinations replicated four times in a completely randomized design. In the pot study, 25 seeds of either goose grass or blackjack were planted separately in approximately 400 g of soil mixed with cover crop tissue powder at 1% concentration per pot. The experimental design was cover crop residues + control replicated four times in randomized complete blocks. There was a significant (p<0.05) extract ∗ concentration interaction on all germination parameters across all GMCCs. The different cover crop aqueous extracts differentially reduced all germination parameters of both weeds in the order leaf > stem > root extract except for radish root extracts being most inhibitory to all germination parameters of goose grass. The leaf, stem, and root soil-incorporated residues of GMCCs significantly (p<0.05) affected seedling emergence, dry weight, and vigor indices of both weeds. Based on the results of this study, it was concluded that the different GMCC tissues contain allelochemicals that inhibit the emergence of both monocotyledonous and dicotyledonous weeds.Joyful Tatenda RugarePetrus Jacobus PieterseStanford MabasaHindawi LimitedarticleAgriculture (General)S1-972ENInternational Journal of Agronomy, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Agriculture (General) S1-972
spellingShingle	Agriculture (General) S1-972 Joyful Tatenda Rugare Petrus Jacobus Pieterse Stanford Mabasa Allelopathic Potential of Green Manure Cover Crops on Germination and Early Seedling Development of Goose Grass [Eleusine indica (L.) Gaertn] and Blackjack (Bidens pilosa L.)
description	Green manure cover crops (GMCCs), which are recommended for improving soil fertility, also have the potential of reducing weed populations in cropping systems through allelopathy. The objective of this study was to evaluate the effect of eight GMCCs on the germination and seedling development of two weeds of divergent morphology, namely, goose grass [Eleusine indica (L.) Gaertn] and blackjack (Bidens pilosa L.). Aqueous leaf, stem, and root extracts of hyacinth bean (Lablab purpureus L), red sunnhemp [Crotalaria ochroleuca (G.) Don], showy rattlebox (Crotalaria grahamiana Wight & Arn.), common bean (Phaseolus vulgaris L.), common rattlepod (Crotalaria spectabilis Roth.), radish (Raphanus sativus L.), tephrosia (Tephrosia vogelii L.), and black sunnhemp (Crotalaria juncea L.) at 0, 1.25, 2.5, 3.75, and 5% wv−1 were applied to weed seeds in Petri dishes to determine their effect on germination, radicle and plumule growth, and germination vigor index. The experimental design was 3(tissue types) ∗ 5(concentrations) treatment combinations replicated four times in a completely randomized design. In the pot study, 25 seeds of either goose grass or blackjack were planted separately in approximately 400 g of soil mixed with cover crop tissue powder at 1% concentration per pot. The experimental design was cover crop residues + control replicated four times in randomized complete blocks. There was a significant (p<0.05) extract ∗ concentration interaction on all germination parameters across all GMCCs. The different cover crop aqueous extracts differentially reduced all germination parameters of both weeds in the order leaf > stem > root extract except for radish root extracts being most inhibitory to all germination parameters of goose grass. The leaf, stem, and root soil-incorporated residues of GMCCs significantly (p<0.05) affected seedling emergence, dry weight, and vigor indices of both weeds. Based on the results of this study, it was concluded that the different GMCC tissues contain allelochemicals that inhibit the emergence of both monocotyledonous and dicotyledonous weeds.
format	article
author	Joyful Tatenda Rugare Petrus Jacobus Pieterse Stanford Mabasa
author_facet	Joyful Tatenda Rugare Petrus Jacobus Pieterse Stanford Mabasa
author_sort	Joyful Tatenda Rugare
title	Allelopathic Potential of Green Manure Cover Crops on Germination and Early Seedling Development of Goose Grass [Eleusine indica (L.) Gaertn] and Blackjack (Bidens pilosa L.)
title_short	Allelopathic Potential of Green Manure Cover Crops on Germination and Early Seedling Development of Goose Grass [Eleusine indica (L.) Gaertn] and Blackjack (Bidens pilosa L.)
title_full	Allelopathic Potential of Green Manure Cover Crops on Germination and Early Seedling Development of Goose Grass [Eleusine indica (L.) Gaertn] and Blackjack (Bidens pilosa L.)
title_fullStr	Allelopathic Potential of Green Manure Cover Crops on Germination and Early Seedling Development of Goose Grass [Eleusine indica (L.) Gaertn] and Blackjack (Bidens pilosa L.)
title_full_unstemmed	Allelopathic Potential of Green Manure Cover Crops on Germination and Early Seedling Development of Goose Grass [Eleusine indica (L.) Gaertn] and Blackjack (Bidens pilosa L.)
title_sort	allelopathic potential of green manure cover crops on germination and early seedling development of goose grass [eleusine indica (l.) gaertn] and blackjack (bidens pilosa l.)
publisher	Hindawi Limited
publishDate	2021
url	https://doaj.org/article/b0421fae5ff04e199959a2e35d2304c2
work_keys_str_mv	AT joyfultatendarugare allelopathicpotentialofgreenmanurecovercropsongerminationandearlyseedlingdevelopmentofgoosegrasseleusineindicalgaertnandblackjackbidenspilosal AT petrusjacobuspieterse allelopathicpotentialofgreenmanurecovercropsongerminationandearlyseedlingdevelopmentofgoosegrasseleusineindicalgaertnandblackjackbidenspilosal AT stanfordmabasa allelopathicpotentialofgreenmanurecovercropsongerminationandearlyseedlingdevelopmentofgoosegrasseleusineindicalgaertnandblackjackbidenspilosal
_version_	1718429003826593792

Allelopathic Potential of Green Manure Cover Crops on Germination and Early Seedling Development of Goose Grass [Eleusine indica (L.) Gaertn] and Blackjack (Bidens pilosa L.)

Ejemplares similares