Management of Downy Mildew of Onion Through Selective Fungicides in the Field Condition

Bhatti, Tufail Ahmed; Nizamani, Zubeer Ahmed; Gadhi, Muswar Ali; Soomro, Faheeda; Kumar, Raj; Abro, Saeed Ahmed; Soomro, Ali Hassan; Qazi, Suman; Jarwar, Umer ul din; Kandhro, Abdul Ghani; Khan, M. R.

doi:10.38211/joarps.2021.2.1.13

JOARPS

2021

DOI: 10.38211/joarps.2021.2.1.13

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Management of Downy Mildew of Onion Through Selective Fungicides in the Field Condition

Tufail Ahmed Bhatti

Zubeer Ahmed Nizamani

Muswar Ali Gadhi

et al.

Abstract: Efficacy of variousfungicides against powdery mildew of onion all chemical treated 1st, 2nd, 3rd and 4th observation Score observation in plants (out of 15) were0.97, 2.89, 2.44 and 2.22 against 2.33, 9.00, 10.00 and 10.33 in control; disease infection 6.47, 20.00, 16.30 and 14.07% against 15.56, 60.00, 66.67 and 68.89% in control; infected leaves/plant 0.20, 2.04, 2.38 and 2.02 against 1.04, 4.36,4.99 and 4.04leaves in control, respectively. The Cabriotop observation resulted i… Show more

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Cited by 3 publications

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“…Bhatti T.A. òà ³íø³ îòðèìàëè âèñîêó åôåêòèâ-í³ñòü ôóíã³öèä³â Cabrio Top òà Relly, ÿê³ çíèaeóâàëè óðàaeåí³ñòü ïåðîíîñïîðîçîì öèáóë³ â 2,5-3,0 ðàçà [18]. Àâòîðè íàãîëîøóþòü, ùî çà âèñîêîãî ð³âíÿ ðîçâèòêó õâîðîáè ïðîâîäèëè ùîòèaeíåâ³ îáïðèñêóâàííÿ ðîñëèí ôóíã³öèäàìè.…”

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Fungicidal control of the most common onion mycoses during the growing season

Borzykh¹,

Sergienko²,

Dzham³

et al. 2023

qpp

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Goal. To investigate the effectiveness of fungicidal control of the most common onion diseases during the growing season. Methods. Informational and analytical (collection of materials and analysis of literary sources), field research (setting up experiments, carrying out treatments and records of plant damage by diseases, monitoring the development of plants, harvesting), phytopathological (determination and identification of pathogens), mathematical and statistical (processing of results studies). Experiments were conducted on different varieties and hybrids using modern fungicides with different active substances. Results. During the years of research, onion crops were dominated by mycoses, namely, peronosporosis, alternaria, stemphylliosis, and fusarium wilt. Downy mildew and leaf spots were observed on all varieties and hybrids. The investigated fungicides most effectively controlled the development of downy mildew of onions. Their efficiency during the growing season averaged 55.1—100%, depending on the drug, the degree of disease development and the variety. The highest effectiveness against downy mildew of onions was provided by fungicides Fandango 200 ES, KE (fluoxystrobin, 100 g/l + proteoconazole, 100 g/l) at the rate of 1.25 l/ ha and Signum VG (boskalid, 267 g/ kg + pyraclostrobin, 67 g/ kg) — 1.5 kg/ ha. Fungicides were 45.8—89.1% effective against leaf spots (alternaria and stemphyllosis), 57.9—70.5% against fusarium wilt. Treatments with fungicides, due to the reduction of plant damage by diseases, contributed to the increase in onion yield by 1.3—6.9 t/ha, depending on the variety and preparation. Among the studied varieties, the highest yield was obtained on the Medusa variety (40.7 t/ha), among fungicides, the highest yield increase was provided by Fandango 200 ES, KE fungicide (1.25 l/ha). Conclusions. Fungicides effectively controlled the main mycoses of onion (peronosporosis, alternariosis, stemphyllosis and fusarium wilt) during the growing season. The effectiveness of fungicides against onion diseases was 45.8—100%, depending on the type of disease, drug and crop variety. The highest protective effect of fungicides was provided against downy mildew of onions. The yield of the researched varieties and hybrids increased by an average of 5—25% due to the reduction of plant damage by diseases. The highest technical efficiency against identified diseases and increase in onion yield was obtained by using Fandango 200 ES, KE fungicide with a consumption rate of 1.25 l/ha.

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unclassified

Fungicidal control of the most common onion mycoses during the growing season

Borzykh¹,

Sergienko²,

Dzham³

et al. 2023

qpp

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In-Vitro Efficacy of Different Fungicides Against Leaf Spot of Marigold Caused by Alternaria alternata

Jarwar

Gadhi

Nizamani

et al. 2021

MHJST

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This study was carried out to study the in-vitro efficacy of different chemical fungicides leaf spot of marigold, caused by Alternaria alternata. The results of present study showed that the disease incidence from various locations of district Hyderabad Sindh was observed Ghangra Mori 35%, TandoHyder 30%, Rahooki 25%, Moosa Khatyan20%, and Hosri 15%. Upper limit disease occurrence was observed from Ghangra Mori and lower limit sickness was recorded from Hosri. The chemical fungicide Nativo observed 43%, 25.5% and 18.5% linear colony growth of Alternaria alternata at 100, 200 and 400 ppm, respectively. Aliete observed 52, 31.5 and 21 respectively. Carbandazm observed 52.5, 29.5 and 21mm respectively and Mancozeb observed 51, 28.5 and 20mm respectively. Lower limit growth of Alternaria alternata were judge in 400 ppm instead Nativo pursuited by Mancozeb, Carbandazm and Aliete, separately. In control there was 90mm was recorded. It was concluded that chemical fungicide ‘Nativo’ were full effective to stop the disperssion of Alternaria alternata in 400 ppm. Anytime the plant infusion, Neem infusion show good effect opposite linear colony growth of Alternaria alternata on 6% solution

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In-Vitro Efficacy of Different Botanical Extract against Leaf Spot of Marry Gold caused by Alternaria alternat

2021

MHJST

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This study was carried out to study the in-vitroefficacy of different botanical extracts against leaf spot of marigold, caused by Alternaria alternata. The results of present study showed that the disease incidence from variouslocations of district HyderabadSindhwas observed Ghangra Mori35%, TandoHyder 30%, Rahooki25%, Moosa Khatyan20%, and Hosri15%.Upper limitdisease occurrencewas observedfrom Ghangra Mori and lower limit sickness was recordedfrom Hosri. The botanicalplantextract ‘Neem’ observed 48, 40and 34mmlinear colony growth of Alternaria alternataat 2%, 4% and 6% concentrations, respectively, Dhaturaextract observed 75.5, 63 and 57.5mmcolony growth of Alternaria alternataat 2%, 4% and 6% concentrations, respectively. Garlic extract observed 49%, 43% and 36% linear colony growth of Alternaria alternataat 2%, 4% and 6% concentrations, respectively. Ginger extract observed 50, 43.5and 36.5mmcolony growth of Alternaria alternataat 2%, 4% and 6% concentrations, respectively. Minimum linear colony growth of Alternaria alternatawas observed at 6% concentration for Neem extract followed by Garlic extract, Ginger extract and Datura extract, respectivelythe plant infusion, Neeminfusion show good effectoppositelinear colony growth of Alternaria alternataon6% solution

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Management of Downy Mildew of Onion Through Selective Fungicides in the Field Condition

Cited by 3 publications

References 9 publications

Fungicidal control of the most common onion mycoses during the growing season

Fungicidal control of the most common onion mycoses during the growing season

In-Vitro Efficacy of Different Fungicides Against Leaf Spot of Marigold Caused by Alternaria alternata

In-Vitro Efficacy of Different Botanical Extract against Leaf Spot of Marry Gold caused by Alternaria alternat

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