Control of sorghum downy mildew (Peronosclerospora sorghi) of maize by seed treatment in Nigeria

Anaso, A. B.; Tyagi, P. D.; Emechebe, A. M.; Manzo, S. K.

doi:10.1016/0261-2194(89)90080-x

Cited by 8 publications

(10 citation statements)

References 1 publication

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“…Epidemics of P. sorghi in Africa appear to be more sporadic than those of S. graminicola . However, in southern Nigeria maize crops are frequently infected, with a high incidence of systemic SDM resulting in a severe yield loss (Anaso et al ., 1989; Olanya et al ., 1993). Bock (1995) observed maize fields with more than 60% systemic infection.…”

Section: Yield Lossmentioning

confidence: 99%

“…kg −1 seed completely controlled SDM in Texas (Odvody & Frederiksen, 1984a). Similarly, Anaso et al . (1989) reported almost complete control of SDM on maize in Nigeria at 0.35 g a.i.…”

Section: Controlmentioning

confidence: 99%

“…Odvody & Frederiksen (1984b) illustrated the effectiveness of foliar sprays of metalaxyl in reducing infection in sorghum and maize crops. Anaso et al (1990) reported that foliar sprays were most effective 10-14 days after sowing and could completely control SDM on maize in Nigeria. There was no difference between one spray at 14 days after sowing and spraying up to four times at intervals of 4 days starting 14 days after sowing.…”

Section: Chemical Controlmentioning

confidence: 99%

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The epidemiology, variability and control of the downy mildews of pearl millet and sorghum, with particular reference to Africa

et al. 1998

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Sorghum downy mildew (Peronosclerospora sorghi) infecting sorghum and maize, and pearl millet downy mildew (Sclerospora graminicola) infecting pearl millet can cause considerable yield loss in Africa. The last 15 years have witnessed an increase in knowledge of the biology, epidemiology and control of these two pathogens. Much information has been obtained on the effect of environmental factors on disease epidemiology, spore production and dispersal. Molecular techniques applied to study pathogenic variability have aided in defining relationships among these pathogens, although scope of the work is limited. Knowledge of the genetics and inheritance of resistance, and of resistance mechanisms, has also increased. This review presents the current state of knowledge of both downy mildew pathogens, with focus on their status on sorghum and pearl millet in Africa. Despite the advances in knowledge over the last 15 years, these downy mildews remain important constraints to sustainable crop production in the semi‐arid regions of Africa. In some cases information obtained in Asia and the Americas can be extrapolated to Africa but care must be taken in ensuring its applicability. Priorities for future research relevant for Africa are proposed and discussed.

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Section: Yield Lossmentioning

confidence: 99%

“…kg −1 seed completely controlled SDM in Texas (Odvody & Frederiksen, 1984a). Similarly, Anaso et al . (1989) reported almost complete control of SDM on maize in Nigeria at 0.35 g a.i.…”

Section: Controlmentioning

confidence: 99%

Section: Chemical Controlmentioning

confidence: 99%

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The epidemiology, variability and control of the downy mildews of pearl millet and sorghum, with particular reference to Africa

et al. 1998

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“…However, successful control of the disease with fungicide was reported in India (Venugopal and Saffeulla 1978;Williams and Singh 1981) and in Nigeria (IAR 1983(IAR , 1984Anaso 1996). In Nigeria, seed dressing with metalaxyl at 4.2 a.i./ha, formulated as Apron 35 DS (IAR 1983(IAR , 1984Anaso et al 1989), and 3.0g a.i./ha as Apron Plus 50 DS (Anaso 1996), protected pearl millet from the disease. A major shortcoming of metalaxyl is that its effectiveness in cereal crops persists for about three weeks (Williams 1984;Anaso et al *Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

Pearl millet downy mildew as affected by seed dressing and cultivar in the Sahel and Sudan savanna of Nigeria

Anaso

2010

Archives Of Phytopathology And Plant Protection

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Field trials in which seed dressing with Apron Star 42 WS (metalaxyl-M) was tested on five pearl millet cultivars were laid at Gashua (Sahel) and Maiduguri (Sudan Savanna) for three wet seasons (1998)(1999)(2000). Using the split-plot design, seed dressing and cultivars were tested in main-and sub-plots, respectively. Results showed that at each location and season, there was significantly high seedling emergence and grain yield but lower downy mildew incidence as a result of seed dressing with metalaxyl-M compared with check. Among the cultivars tested, SOSAT C-88 had significantly lower downy mildew incidence and the highest grain yield during the three seasons. Dressed with metalaxyl-M, other cultivars had lower downy mildew and higher grain yield than undressed check. It is therefore important that pearl millet should be dressed with metalaxyl as routine practice before cultivation in the arid area of Nigeria.

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“…Although effective chemical measures (Anahosur and Patil, 1980;Frederiksen, 1984a and1984b;Anaso et al, 1989 andSharma andLal, 1998) are available for SDM, breeding resistant varieties and their cultivation has been a widely accepted phenomena in most of the crop improvement programmes (Shivanna and Anahosure, 1990). Genetic information relating to host resistance would provide more relevant basis for making breeding decisions.…”

Section: Genetics Of Resistance To Sorghum Downy Mildewmentioning

confidence: 99%

Sorghum Downy Mildew of Maize – A Review

Arulselvi¹,

Selvi²,

Pandiyan³

2018

Int.J.Curr.Microbiol.App.Sci

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Control of sorghum downy mildew (Peronosclerospora sorghi) of maize by seed treatment in Nigeria

Cited by 8 publications

References 1 publication

The epidemiology, variability and control of the downy mildews of pearl millet and sorghum, with particular reference to Africa

The epidemiology, variability and control of the downy mildews of pearl millet and sorghum, with particular reference to Africa

Pearl millet downy mildew as affected by seed dressing and cultivar in the Sahel and Sudan savanna of Nigeria

Sorghum Downy Mildew of Maize – A Review

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