Articles
Survey on leaf blight of taro (Phytophthora colocasiae Raciborski) in Nagaland
Article number
1118_18
Pages
125 – 130
Language
English
Abstract
Taro is an important tuber and cash crop cultivated in Nagaland and occupies an indispensable place in the diet of the Nagas.
It is grown as a mono crop or intercrop in the jhum fields or in kitchen gardens.
This crop provides food and nutritional security to the tribals in Nagaland.
All parts of the plant NDASH leaves, stems, corms are consumed by the tribals and these are also used as animal feed.
This important crop has several limiting factors in its cultivation process which limits its production in the state.
Taro blight caused by Phytophthora colocasiae Raciborski is one of the most important factor which limits its successful cultivation.
The disease usually appears during monsoon and continues throughout the rainy season.
Thus, with a view to study the occurrence and spread/status of this disease and identify indigenous landraces which are most susceptible and those which are resistant to this disease, an extensive survey was carried out in five districts of Nagaland during the 2009-10 cropping season in three altitudes viz., low hills, mid hills and high hills of Nagaland.
Maximum incidence of the disease was recorded in the high hills (53.33-66.66%), followed by mid hills (46.67-66.66%) while the lowest was recorded in low hills (33.33-51.67%).
It is grown as a mono crop or intercrop in the jhum fields or in kitchen gardens.
This crop provides food and nutritional security to the tribals in Nagaland.
All parts of the plant NDASH leaves, stems, corms are consumed by the tribals and these are also used as animal feed.
This important crop has several limiting factors in its cultivation process which limits its production in the state.
Taro blight caused by Phytophthora colocasiae Raciborski is one of the most important factor which limits its successful cultivation.
The disease usually appears during monsoon and continues throughout the rainy season.
Thus, with a view to study the occurrence and spread/status of this disease and identify indigenous landraces which are most susceptible and those which are resistant to this disease, an extensive survey was carried out in five districts of Nagaland during the 2009-10 cropping season in three altitudes viz., low hills, mid hills and high hills of Nagaland.
Maximum incidence of the disease was recorded in the high hills (53.33-66.66%), followed by mid hills (46.67-66.66%) while the lowest was recorded in low hills (33.33-51.67%).
Authors
N. Pongener, L. Daiho
Keywords
Colocasia esculenta (L.) Schott, disease incidence, indigenous landraces, agro- climatic zones, susceptible and resistance
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