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03
Aug

Rice green semilooper

1. Rice green semilooper (Naranga aenescens) is one of the major pests of rice. 2. It infests 30-40 days old upland crop and continues to Damage the crop up to 65 days. The larvae feed mainly on leaves and defoliate them. 3. Apanteles sp. parasitize up to 80% of green semilooper in field conditions.
03
Aug

Rice ear cutting caterpillar

1. The outbreak of rice ear cutting caterpillar (Mythimna separata) was recorded during 1982 initially in Assam and then spread to Manipur, Arunachal, Meghalaya and Tripura. 2. It is an important pest of rice in the region. During outbreaks, it causes 100% damage to the standing crop• 3. The larvae cut the ear head and leave behind the rice shoot resulting in as if the animals have grazed it. It directly affects the yield of the crop.
03
Aug

Rice hispa

1. Rice hispa (Dicladispa armigera) is a small blue-black beetle covered with spines. The grubs make long winding tunnels into leaves whereas adults scrape the chlorophyll. 2. The affected leaves turn whitish and membranous and ultimately dry up. Scrapping of the upper surface of the leaf blade leaving only the lower epidermis as white streaks parallel to the midrib. 3. Tunnelling of larvae throu

03
Aug

Rice gall midge

1. Gall midge (Orseolia oryzae) is a serious pest in Manipur and also occurs throughout the region as a common pest. 2. It is found in both lowland and upland conditions during the tillering stage of the rice plant. It has also been reported to occur in deep water rice in Assam. 3. Its Population density is favoured mainly by cloudy or rainy weather, cultivation of high tillering varieties, intens

03
Aug

Rice thrips

1. Both nymphs and adults of thrips (Thrips oryzae) feed on the plant sap from tender leaves. 2. The leaf tips of the affected plants fade and roll up and the thrips remain within the folds. 3. This is a serious pest in uplands of Sikkim andjhum lands ofTripura, Mizoram, Meghalaya, Manipur and Arunachal Pradesh.

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