Epidemiological Studies of Tomato Leaf Curl Virus Disease Based upon Environmental Variables

Zeshan, Muhammad; Khan, Mahnoor; Ali, Safdar; Ahmed, Nadeem; Arshad, Muhammad

doi:10.17957/ijab/15.0208

Cited by 2 publications

(2 citation statements)

References 20 publications

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“…Whitefly population and disease progress was rapid during hot kharif season i.e. February-May (Saikia and Muniyappa 1989), and TLCV incidence decreased with increasing relative humidity (Aktar et al, 2008;Kaushik, 2012;Zeshan et al, 2016). Our results are in agreement with the findings of these researchers.…”

Section: Discussionsupporting

confidence: 90%

Epidemiological Studies of Tomato Leaf Curl Virus and Whitefly Population and Their Management Using Botanicals

Mehmood

Perveen

Chohan

et al. 2018

Pak. J. Phytopathol.

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A B S T R A C TTomato (Solanum lycopersicum L.) is an important food crop extensively grown all over the world and is susceptible to various abiotic and biotic stresses. Tomato leaf curl virus (TLCV) is a devastating disease of tomato, transmitted by whitefly, ultimately results in marked reduction of tomato production. In current experiment, four tomato cultivars i.e., Reo Grande, Roma, Moneymaker and Nagina were grown under field conditions to screen against TLCV. Correlation studies revealed a positive and significant relationship among TLCV, whitefly population and environmental factors (temperature and relative humidity). Highest whitefly infestation with TLCV severity was observed on moneymaker compared to other tested cultivars. Subsequently, moneymaker was further subjected to check efficacy of botanicals (neem leaf extract and garlic clove extract), detergent and Imidacloprid against disease vector i.e., whitefly and TLCV at different concentrations under glasshouse conditions. These botanicals and detergent elucidated promising results in reducing whitefly population followed by low severity of TLCV. Whereas, Imidacloprid was most effective in reducing whitefly population up to 1.00 adult/ plant followed by neem leaf extract, garlic clove extract and detergent that reduced up to 1.33, 1.67 and 2.33 adults/ plant, respectively. It is recommended that TLCV severity could be managed by using neem leaf and garlic clove extract which ultimately reduced the whitefly population and serves as a good alternative than hazardous pesticides on food crops.

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Section: Discussionsupporting

confidence: 90%

Epidemiological Studies of Tomato Leaf Curl Virus and Whitefly Population and Their Management Using Botanicals

Mehmood

Perveen

Chohan

et al. 2018

Pak. J. Phytopathol.

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“…Similarly, Imran et al [27] showed increase in ToMV severity with temperature but decreased with increase in relative humidity. Such studies are also conducted by various authors for many different viral diseases, like Zeshan et al [28] showed direct relationship of TLCV with temperature but it was not increasing with increase in relative humidity, while rainfall and wind speed were not related with disease development. Likewise, Haider et al [29] assessed relationship of epidemiological factors among whitefly population and tomato leaf curl virus disease (TLCVD) incidence was studied on six tomato varieties.…”

Section: Correlation Between Cucumber Mosaic Viral Disease and Enviromentioning

confidence: 90%

Prevalence, mechanical transmission and impact of environmental conditions on cucumber mosaic disease in Sindh

Bhutto

Nizamani

Dhiloo

et al. 2019

PAB

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Cucumber mosaic virus (Genus: Cucumovirus, Family: Bromoviridae) is major pathogen of cucumber (Cucumis sativus L.) in Pakistan and may cause up to 100 % losses. Therefore, this survey based study was planned to determine the disease intensity in fields, mechanical transmission for confirmation of virus and analysis of influence of environmental conditions on the disease development. The disease was monitored on 30 plants at each site in district Hyderabad, Tando Allahyar, Thatta and Shaheed Benazirabad. There were seven sites at each district for observations. Metrological data collected from Regional Agro Metrological Centre, ARI Tandojam Sindh was correlated with the disease intensity. The disease incidence was ranging, 40-77, 37-70, 63-100 and 30-90%, at district Hyderabad, Tando Allahyar, Thatta and Shaheed Benazirabad, respectively. District wise, there was highly significant variation among incidence of cucumber mosaic disease (Df= 3, F= 20.59, P= 0.0000). Maximum disease incidence was recorded at Thatta (81.0%). However, overall severity of cucumber mosaic in all the surveyed districts was 2-score. On mechanical inoculation, after 15 days necrotic lesions were only found on the leaves of Chenopodium amaranticolor inoculated with sap of symptomatic leaves. Maximum, minimum temperature (℃) and evaporation showed significant relation (r 2 = 0.883, P= 0.0053, r 2 = 0.664, P= 0.0482 and r 2 = 0.827, P= 0.0119, respectively) only with the disease incidence but not with severity. Cloudiness was highly significantly related with disease severity (r 2 = 0.975, P= 0.0002) but there was non-significant relationship with disease incidence (r 2 = 0.600, P= 0.0705).

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Epidemiological Studies of Tomato Leaf Curl Virus Disease Based upon Environmental Variables

Cited by 2 publications

References 20 publications

Epidemiological Studies of Tomato Leaf Curl Virus and Whitefly Population and Their Management Using Botanicals

Epidemiological Studies of Tomato Leaf Curl Virus and Whitefly Population and Their Management Using Botanicals

Prevalence, mechanical transmission and impact of environmental conditions on cucumber mosaic disease in Sindh

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