The economic benefits of fungicide treatment of maize for the control of grey leaf spot (<i>Cercospora zeae-maydis</i>) in KwaZulu-Natal

Ward, J. M. J.; Darroch, Mark A.G.; Laing, Mark; Cairns, A. L. P.; Dicks, H. M.

doi:10.1080/02571862.1997.10635079

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…Yield data were collected at 18 WAT and subjected to analysis of variance. The economic analysis was carried out to compare the profitability of treatments according to the procedure described by CIMMYT (1988) and the modified method of Ward et al (1997). The economic analysis was only carried out on data that had significant differences on marketable fruit yield.…”

Section: Methodsmentioning

confidence: 99%

Comparative Study of the Effect of Different Weed Management Strategies on Disease Severity and Marketable Yield of Paprika (Capsicum Annuum L.) in the Smallholder Farming Sector of Zimbabwe

Handiseni¹,

Sibiya²,

Ogunlela³

et al. 2008

Journal of Plant Protection Research

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On-farm trials were conducted in the Chinyika Resettlement Area of Zimbabwe under dryland conditions to investigate the effects of different weed management methods on disease incidence, severity and paprika (Capsicum annuum) pod yield. The weed control treatments included hand weeding at 2 and 6 weeks after transplanting (WAT); ridge re-moulding at 3,6 and 9 WAT; application 4 l/ha Lasso (alachlor) immediately after transplanting, and Ronstar (oxidiazinon) at 2 l/ha tank mixed with Lasso at 2 l/ha one day before transplanting. The herbicide-water solution was applied at the rate of 200 l/ha using a knapsack sprayer. Major diseases identified were bacterial leaf spot (Xanthomonas campestris pv. vesicatoria), cercospora leaf spot (Cercospora unamunoi), grey leaf spot (Stemphylium solani) and powdery mildew (Leveillula taurica) in both seasons. For the 2000/2001 season hand weeding at 2 and 6 WAT and ridge re-moulding at 3, 6 and 9 WAT had the greatest reduction effect on the area under disease progress curve (AUDPC) and the highest marketable fruit yield.

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Section: Methodsmentioning

confidence: 99%

Comparative Study of the Effect of Different Weed Management Strategies on Disease Severity and Marketable Yield of Paprika (Capsicum Annuum L.) in the Smallholder Farming Sector of Zimbabwe

Handiseni¹,

Sibiya²,

Ogunlela³

et al. 2008

Journal of Plant Protection Research

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“…The study was agreed with Aschalew et al (2012) previous work indicated that GLS disease is favored by humid and warm condition for its' development. Particularly in favorable climatic condition maize Grey leaf spot disease in South Africa is capable of reducing grain yields by 20-60% (Ward et al, 1997). To date, the disease is one of the most important threats to maize production in Ethiopia, causing yield losses as high as 29.10% and considerable yield loss in most maize growing areas of the country (Assefa, 1999;Wegary et al, 2004;Keno et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Preliminary survey of foliar maize diseases in North Western Ethiopia

Sintayehu¹,

Tadesse²,

Gebremedhin³

2018

Afr. J. Agric. Res.

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In Ethiopia, maize is the staple food and one of the main sources of calories particularly in the major maize producing-regions of the country. Survey was conducted to determine the prevalence, incidence and severity of foliar maize diseases in North Gondar Zone. A total of 150 farmers' fields were randomly sampled from five districts (Chilga, Gondar zuria, Takussa, Metema and Dembia) in North Gondar Zone of Amhara Region during cropping seasons of 2015 and 2016 years. Five quadrants were examined per farmers' field for estimation of maize foliar disease incidence and severity infestation. This was done followed by pathogen isolation and disease identification laboratory procedures. Both of two years surveyed data were collected, analyzed and expressed using simple percentage. Results indicated that the dominant maize diseases were caused by Exserohilum turcicum, Puccinia sorghi and Cercospora zeae-maydis pathogen. Maize disease incidence of E. turcicum ranged from 50 to 80%, P. sorghi 19 to 62% whereas that of C. zeae-maydis reached 42% on foliar maize disease. In addition 3-19% of disease incidence of maize streak virus was recorded from seemingly healthy maize plants. Among four identified diseases Turcicum leaf blight (TLB), Common leaf rust (CLR) and Gray leaf spot (GLS) were recorded as major disease, while maize streak virus (MSV) was as minor disease. The present study provides an indication of the incidence and severity of foliar diseases of maize on which management strategies could be derived to improve the maize production in the surveyed areas.

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Ward¹,

Nowell²

1998

Integrated Pest Management Reviews

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The economic benefits of fungicide treatment of maize for the control of grey leaf spot (Cercospora zeae-maydis) in KwaZulu-Natal

Cited by 3 publications

References 2 publications

Comparative Study of the Effect of Different Weed Management Strategies on Disease Severity and Marketable Yield of Paprika (Capsicum Annuum L.) in the Smallholder Farming Sector of Zimbabwe

Comparative Study of the Effect of Different Weed Management Strategies on Disease Severity and Marketable Yield of Paprika (Capsicum Annuum L.) in the Smallholder Farming Sector of Zimbabwe

Preliminary survey of foliar maize diseases in North Western Ethiopia

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