Agrotis segetum Crop: Chilli, Cole crops, tomato, maize, radish Why is it a problem? Larvae of the common cutworm live in the soil and cut seedlings of various crops. It is most important in chili, causing poor plant stands that require replanting. Seedling losses in Cole crops are also occasionally …
Helicoverpa armigera Crop: chili, tomato, chickpeas, and maize Why is it a problem? Caterpillars can attack a wide range of crops. In Bhutan, they cause the greatest damage to chili and tomato. Chilli damage is internal, mostly to the seed, so the main effects are aesthetic and the loss of …
Maize is one of the main cereal crops in Bhutan. A total of 30, 939 MT of maize was harvested from 25,473 acres (NSB, 2021). The major maize growing Dzongkhags are Mongar, Pema Gatshel, and Trashigang (NSB, 2021). Other important cereal crops include paddy, wheat, barley, buckwheat, millet, and quinoa. …
Maize is a primary food crop in Bhutan after rice, and it ranks first among food crops in terms of both extent of area cultivated and total production. It plays a critical role in household food security. It is estimated that 80% (of 353 million nu annually in 2006) of …
Cole crops are an important cash crop in Bhutan. It is grown mainly for domestic consumption. The main Cole crops grown are cabbages (3,413 MT produced in 2013), cauliflower (829 MT) and broccoli (363 MT). Cole crops are commonly grown in food gardens across Bhutan. Commercially they are mainly grown …
Citrus, mainly mandarin, is almost exclusively grown as a cash crop. It is the most important fruit crop in Bhutan (33,470 MT of mandarins produced in 2013), with most exported (75% in 2013). Citrus is grown in 16 dzongkhags with major areas located in the subtropical southern regions. Fruit from …
Chilli cultivation (8,320 MT produced in 2013) is of major importance to Bhutan, second only to potatoes in terms of production. It is grown in all 20 Dzongkhag from about 250 to 2600 masl both for self consumption and as a cash-crop (principally for the domestic market). The number and …
Apple is an important cash crop since commencing in Bhutan in the early 1960s. It is now second to citrus in terms of production (8.032 MT in 2013). The most common varieties to be grown are Red Delicious, Royal Delicious and Golden Delicious. About half the apples grown (54% in …
Myzus persicae Crop: Generalist, but is only a pest of potato Why is it a problem? Aphids are sap-sucking insects that at high densities can cause leaf curl and stunting, resulting in poor potato production. However, globally green peach aphid is known as one of the most important virus vectors, …
Phyllophyga sp. Crop: Potato Why is it a problem? Feeding by the white grub larvae results in large circular holes in potato tubers, reducing their market value. Where and when is it a problem? Although present in all potato-growing areas, it normally does not cause sufficient damage to be economically …
