Investigating the Effectiveness of Sunn Hemp (Crotalaria juncea) and Rye (Secale cereal L.) in Weed Suppression and Yield of Kohlrabi (Brassica oleracea var. Gongylodes)

Background & Objective: Use of cover crops for controlling weeds is an environmental friendly alternative to conventional chemical and mechanical methods. Kohlrabi is a cool-season hardy crop which can be grown in early spring. The crop is well known in Europe and other regions as a health stapl...

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Autores principales:	Fatemeh Ahmadnia, Ali Ebadi, Masoud Hashemi, Leyli Nabati
Formato:	article
Lenguaje:	FA
Publicado:	University of Tabriz 2021
Materias:	keywords: cover crops kohlrabi residue sunn hemp weeds Agriculture (General) S1-972 Plant culture SB1-1110
Acceso en línea:	https://doaj.org/article/c2000e25d2b74f28bfd8716dfbe4e851
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spelling	oai:doaj.org-article:c2000e25d2b74f28bfd8716dfbe4e8512021-11-27T07:10:27ZInvestigating the Effectiveness of Sunn Hemp (Crotalaria juncea) and Rye (Secale cereal L.) in Weed Suppression and Yield of Kohlrabi (Brassica oleracea var. Gongylodes)2476-43102476-432910.22034/saps.2021.13090https://doaj.org/article/c2000e25d2b74f28bfd8716dfbe4e8512021-06-01T00:00:00Zhttps://sustainagriculture.tabrizu.ac.ir/article_13090_81d10c0658bffb614d519a84849199af.pdfhttps://doaj.org/toc/2476-4310https://doaj.org/toc/2476-4329Background & Objective: Use of cover crops for controlling weeds is an environmental friendly alternative to conventional chemical and mechanical methods. Kohlrabi is a cool-season hardy crop which can be grown in early spring. The crop is well known in Europe and other regions as a health staple in human’s diets. The aim of the present study was to investigate the effectiveness of using sunn hemp and rye cover crops as monoculture or mixed in controlling weeds and improving yield of kohlrabi. Materials & Method: A two-year field study was conducted. Experimental treatments consisted of monoculture rye (Secale cereal L.), sunn hemp (Crotalaria juncea) and their mixture and no cover crop as control. Results: Cover crops biomass were 379.7 and 473.9 g.m-2 in first and second growing seasons, respectively. Averaged over two years, weed dry weight reduced by 52.6, 42.5 and 45.4 percentage in rye monoculture, sunn hemp monoculture, and mixed cover crops, respectively. Monoculture rye was more effective in suppressing the dominant weeds. Rye reduced lambsquarter, pigweed, and wild mustard by about 44, 60, and 52 percentage, respectively. On average, use of cover crops improved kohlrabi yield by 30%. Sunn hemp followed by mixed cover crops were more effective in kohlrabi yield improvement. Conclusion: Cover crops provide many ecological benefits. When weed suppression is the main goal of cover cropping, rye with fast growing habit and extensive root system is more efficient. However, legumes or mixture of legumes and grass are more effective in crop yield improvement.Fatemeh AhmadniaAli EbadiMasoud HashemiLeyli NabatiUniversity of Tabrizarticlekeywords: cover cropskohlrabiresiduesunn hempweedsAgriculture (General)S1-972Plant cultureSB1-1110FAJournal of Agricultural Science and Sustainable Production, Vol 31, Iss 2, Pp 43-56 (2021)
institution	DOAJ
collection	DOAJ
language	FA
topic	keywords: cover crops kohlrabi residue sunn hemp weeds Agriculture (General) S1-972 Plant culture SB1-1110
spellingShingle	keywords: cover crops kohlrabi residue sunn hemp weeds Agriculture (General) S1-972 Plant culture SB1-1110 Fatemeh Ahmadnia Ali Ebadi Masoud Hashemi Leyli Nabati Investigating the Effectiveness of Sunn Hemp (Crotalaria juncea) and Rye (Secale cereal L.) in Weed Suppression and Yield of Kohlrabi (Brassica oleracea var. Gongylodes)
description	Background & Objective: Use of cover crops for controlling weeds is an environmental friendly alternative to conventional chemical and mechanical methods. Kohlrabi is a cool-season hardy crop which can be grown in early spring. The crop is well known in Europe and other regions as a health staple in human’s diets. The aim of the present study was to investigate the effectiveness of using sunn hemp and rye cover crops as monoculture or mixed in controlling weeds and improving yield of kohlrabi. Materials & Method: A two-year field study was conducted. Experimental treatments consisted of monoculture rye (Secale cereal L.), sunn hemp (Crotalaria juncea) and their mixture and no cover crop as control. Results: Cover crops biomass were 379.7 and 473.9 g.m-2 in first and second growing seasons, respectively. Averaged over two years, weed dry weight reduced by 52.6, 42.5 and 45.4 percentage in rye monoculture, sunn hemp monoculture, and mixed cover crops, respectively. Monoculture rye was more effective in suppressing the dominant weeds. Rye reduced lambsquarter, pigweed, and wild mustard by about 44, 60, and 52 percentage, respectively. On average, use of cover crops improved kohlrabi yield by 30%. Sunn hemp followed by mixed cover crops were more effective in kohlrabi yield improvement. Conclusion: Cover crops provide many ecological benefits. When weed suppression is the main goal of cover cropping, rye with fast growing habit and extensive root system is more efficient. However, legumes or mixture of legumes and grass are more effective in crop yield improvement.
format	article
author	Fatemeh Ahmadnia Ali Ebadi Masoud Hashemi Leyli Nabati
author_facet	Fatemeh Ahmadnia Ali Ebadi Masoud Hashemi Leyli Nabati
author_sort	Fatemeh Ahmadnia
title	Investigating the Effectiveness of Sunn Hemp (Crotalaria juncea) and Rye (Secale cereal L.) in Weed Suppression and Yield of Kohlrabi (Brassica oleracea var. Gongylodes)
title_short	Investigating the Effectiveness of Sunn Hemp (Crotalaria juncea) and Rye (Secale cereal L.) in Weed Suppression and Yield of Kohlrabi (Brassica oleracea var. Gongylodes)
title_full	Investigating the Effectiveness of Sunn Hemp (Crotalaria juncea) and Rye (Secale cereal L.) in Weed Suppression and Yield of Kohlrabi (Brassica oleracea var. Gongylodes)
title_fullStr	Investigating the Effectiveness of Sunn Hemp (Crotalaria juncea) and Rye (Secale cereal L.) in Weed Suppression and Yield of Kohlrabi (Brassica oleracea var. Gongylodes)
title_full_unstemmed	Investigating the Effectiveness of Sunn Hemp (Crotalaria juncea) and Rye (Secale cereal L.) in Weed Suppression and Yield of Kohlrabi (Brassica oleracea var. Gongylodes)
title_sort	investigating the effectiveness of sunn hemp (crotalaria juncea) and rye (secale cereal l.) in weed suppression and yield of kohlrabi (brassica oleracea var. gongylodes)
publisher	University of Tabriz
publishDate	2021
url	https://doaj.org/article/c2000e25d2b74f28bfd8716dfbe4e851
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Investigating the Effectiveness of Sunn Hemp (Crotalaria juncea) and Rye (Secale cereal L.) in Weed Suppression and Yield of Kohlrabi (Brassica oleracea var. Gongylodes)

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