Maize grey leaf spot (GLS) caused by Cercospora zeae- maydis Tehon & Daniels causes
grain yield loss up to I 00 percent. Resistant varieties offer the best option for economic
control of the disease in Nepalese hill maize farming context. Considering the fact, released
maize varieties for mid and high hills along with some varieties from CIMMYT were
evaluated against the diseases at Pakhribas (1750 mas!) during 2009 and 2010 in RCB
design with two replications. The varieties included were Zm-627, Zm-525 and
Zm07SADVI (from CJMMYT) and Sheetal, Deuti, Ganesh-1, Mankamana-1,
Manakamana-3, Manakamana-4, Manakamna-6, Poshilo Makai-1 (released varieties) and
Farmers' local as check. Scoring was done three times on 1-5 scale given by Saghai and
Maroo (1993). The experiments conducted during 2009 and 2010 rainy season revealed that
genotypes Zm-627, Zm-525 and Zm07SADVJ were least affected by the diseases during
both the years. Recommended varieties Sheetala, Deuti and Ganesh-1 performed better than
local check in both years. Whereas, Mankamana-3, Mankamana-6, Poshilo Makai-1,
Mankamana-4 and Mankamana-1 were less affected by the disease as compared to local
check during 2010 but were more affected than local during 2009. On the basis of yield,
Ganesh-1 performed best during 2009 and Zm-07SADVI was best during 201 0.
Manakamana-1 and Manakamana-3 were worst yielder on GLS affected conditions whereas
other varieties were better than farmers' local. Per cent ear rot at the time of harvest was
minimum in farmers' local (2.38%) followed by Mankamana-3 (5.56%) and Ganesh-1
(5 .88%). Per cent ear rot in other varieties ranged between 11- 26%. Per cent ear rot at the
time of harvest fotmd to increase with increase in open cob percentage.

Maize grey leaf spot (GLS) caused by Cercospora zeae- maydis Tehon & Daniels causes
grain yield loss up to I 00 percent. Resistant varieties offer the best option for economic
control of the disease in Nepalese hill maize farming context. Considering the fact, released
maize varieties for mid and high hills along with some varieties from CIMMYT were
evaluated against the diseases at Pakhribas (1750 mas!) during 2009 and 2010 in RCB
design with two replications. The varieties included were Zm-627, Zm-525 and
Zm07SADVI (from CJMMYT) and Sheetal, Deuti, Ganesh-1, Mankamana-1,
Manakamana-3, Manakamana-4, Manakamna-6, Poshilo Makai-1 (released varieties) and
Farmers' local as check. Scoring was done three times on 1-5 scale given by Saghai and
Maroo (1993). The experiments conducted during 2009 and 2010 rainy season revealed that
genotypes Zm-627, Zm-525 and Zm07SADVJ were least affected by the diseases during
both the years. Recommended varieties Sheetala, Deuti and Ganesh-1 performed better than
local check in both years. Whereas, Mankamana-3, Mankamana-6, Poshilo Makai-1,
Mankamana-4 and Mankamana-1 were less affected by the disease as compared to local
check during 2010 but were more affected than local during 2009. On the basis of yield,
Ganesh-1 performed best during 2009 and Zm-07SADVI was best during 201 0.
Manakamana-1 and Manakamana-3 were worst yielder on GLS affected conditions whereas
other varieties were better than farmers' local. Per cent ear rot at the time of harvest was
minimum in farmers' local (2.38%) followed by Mankamana-3 (5.56%) and Ganesh-1
(5 .88%). Per cent ear rot in other varieties ranged between 11- 26%. Per cent ear rot at the
time of harvest fotmd to increase with increase in open cob percentage.