Inhibitory effects of topramezone and atrazine applied singly and in combination on selected herbicide-resistant biotypes of goosegrass [Eleusine indica] / Nur Zulaikha Abdullani

Eleusine indica, commonly known as goosegrass, has evolved resistance to different groups of herbicides like glyphosate, glufosinate and fluazifop due to over reliance on the herbicides. Thus, the research was conducted to determine the post emergence application of topramezone and atrazine applied...

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Main Author:	Abdullani, Nur Zulaikha
Format:	Thesis
Language:	English
Published:	2021
Subjects:	Weeds parasitic plants etc. Pesticides
Online Access:	https://ir.uitm.edu.my/id/eprint/42021/1/42021.pdf
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id	my-uitm-ir.42021
record_format	uketd_dc
spelling	my-uitm-ir.420212021-02-17T04:18:58Z Inhibitory effects of topramezone and atrazine applied singly and in combination on selected herbicide-resistant biotypes of goosegrass [Eleusine indica] / Nur Zulaikha Abdullani 2021-02-16 Abdullani, Nur Zulaikha Weeds, parasitic plants, etc. Pesticides Eleusine indica, commonly known as goosegrass, has evolved resistance to different groups of herbicides like glyphosate, glufosinate and fluazifop due to over reliance on the herbicides. Thus, the research was conducted to determine the post emergence application of topramezone and atrazine applied singly or in combination on inhibition of three selected herbicide-resistant goosegrass biotypes under field conditions. Goosegrass plants were sprayed with herbicides at the flowering stage (three week after transplanting) by using a knapsack sprayer to achieve a spraying volume of 450 to 600 L per hectare. The assessment was done based on reduction of leaf greenness, shoot dry weight, scorching symptom of goosegrass plants one month after treatment. The results showed that glyphosate-resistant (GY-R) and glufosinate-resistant (GF-R) biotypes of goosegrass could be controlled by 97% with more than 90% reduction of leaf greenness when atrazine at 2500 g ai/ha (full rate) and topramezone at 25 g ai/ha (full rate) were applied singly or in combination at 1250 + 12.5 g ai/ha (half rate). However, topramezone alone or in combination with atrazine provided greater shoot dry weight reduction (p<0.05) of both GF-R and GY-R biotypes than that of the fluazifop-resistant (FL-R) biotype, implying that the FL-R biotype was more tolerant than other biotypes when applied with topramezone alone or in combination with atrazine. Comparison of cost herbicide further revealed that atrazine applied at 2500 g ai/ha is the most cost effective treatment, followed by a combination of atrazine and topramezone at 1250 + 12.5 g ai/ha and topramezone at 25 g ai/ha. 2021-02 Thesis https://ir.uitm.edu.my/id/eprint/42021/ https://ir.uitm.edu.my/id/eprint/42021/1/42021.pdf text en public degree Universiti Teknologi Mara Perlis Faculty of Plantation and Agrotechnology
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
topic	Weeds parasitic plants etc. Pesticides
spellingShingle	Weeds parasitic plants etc. Pesticides Abdullani, Nur Zulaikha Inhibitory effects of topramezone and atrazine applied singly and in combination on selected herbicide-resistant biotypes of goosegrass [Eleusine indica] / Nur Zulaikha Abdullani
description	Eleusine indica, commonly known as goosegrass, has evolved resistance to different groups of herbicides like glyphosate, glufosinate and fluazifop due to over reliance on the herbicides. Thus, the research was conducted to determine the post emergence application of topramezone and atrazine applied singly or in combination on inhibition of three selected herbicide-resistant goosegrass biotypes under field conditions. Goosegrass plants were sprayed with herbicides at the flowering stage (three week after transplanting) by using a knapsack sprayer to achieve a spraying volume of 450 to 600 L per hectare. The assessment was done based on reduction of leaf greenness, shoot dry weight, scorching symptom of goosegrass plants one month after treatment. The results showed that glyphosate-resistant (GY-R) and glufosinate-resistant (GF-R) biotypes of goosegrass could be controlled by 97% with more than 90% reduction of leaf greenness when atrazine at 2500 g ai/ha (full rate) and topramezone at 25 g ai/ha (full rate) were applied singly or in combination at 1250 + 12.5 g ai/ha (half rate). However, topramezone alone or in combination with atrazine provided greater shoot dry weight reduction (p<0.05) of both GF-R and GY-R biotypes than that of the fluazifop-resistant (FL-R) biotype, implying that the FL-R biotype was more tolerant than other biotypes when applied with topramezone alone or in combination with atrazine. Comparison of cost herbicide further revealed that atrazine applied at 2500 g ai/ha is the most cost effective treatment, followed by a combination of atrazine and topramezone at 1250 + 12.5 g ai/ha and topramezone at 25 g ai/ha.
format	Thesis
qualification_level	Bachelor degree
author	Abdullani, Nur Zulaikha
author_facet	Abdullani, Nur Zulaikha
author_sort	Abdullani, Nur Zulaikha
title	Inhibitory effects of topramezone and atrazine applied singly and in combination on selected herbicide-resistant biotypes of goosegrass [Eleusine indica] / Nur Zulaikha Abdullani
title_short	Inhibitory effects of topramezone and atrazine applied singly and in combination on selected herbicide-resistant biotypes of goosegrass [Eleusine indica] / Nur Zulaikha Abdullani
title_full	Inhibitory effects of topramezone and atrazine applied singly and in combination on selected herbicide-resistant biotypes of goosegrass [Eleusine indica] / Nur Zulaikha Abdullani
title_fullStr	Inhibitory effects of topramezone and atrazine applied singly and in combination on selected herbicide-resistant biotypes of goosegrass [Eleusine indica] / Nur Zulaikha Abdullani
title_full_unstemmed	Inhibitory effects of topramezone and atrazine applied singly and in combination on selected herbicide-resistant biotypes of goosegrass [Eleusine indica] / Nur Zulaikha Abdullani
title_sort	inhibitory effects of topramezone and atrazine applied singly and in combination on selected herbicide-resistant biotypes of goosegrass [eleusine indica] / nur zulaikha abdullani
granting_institution	Universiti Teknologi Mara Perlis
granting_department	Faculty of Plantation and Agrotechnology
publishDate	2021
url	https://ir.uitm.edu.my/id/eprint/42021/1/42021.pdf
_version_	1783734656555810816

Inhibitory effects of topramezone and atrazine applied singly and in combination on selected herbicide-resistant biotypes of goosegrass [Eleusine indica] / Nur Zulaikha Abdullani

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