In Bahawalpur, six hot spot of white fly, fourteen hot spots of Jassid
, four hot spots of Mealy Bug, and armyworm (2).
Cotton Leaf Curl Virus (CLCV) caused due to pests like Jassid
and White fly is chiefly affecting core cotton areas of the country.
Among cotton insect pests, sucking insect pest complex comprising of aphid Aphis gossypii Glover, jassid
Amrasca devastans Distant, whitefly Bemisia tabaci Gennadius, thrips Thrips tabaci Lindeman, red cotton bug Dysdercus koenigii Walk and dusky cotton bug Oxycarenus hyalinipennis Costa has been a major challenge to cotton crop production in the Indo-Pak region (Ahmad, 1999; Majeed et al., 2016).
Aphid and Jassid
also suck juice from plants and cause leaf shedding.
The conventional OPs and carbamates have shown resistance to whitefly and jassid
in Pakistan (Ahmad et al., 2010).The use of growth regulators and neonicotinoids followed the insecticides which were rendered ineffective against sucking insect pests (Aheer et al., 2000; Aslam et al., 2004; Solangi and Lohar, 2007; Asi et al., 2008; Frank, 2012).
The most sensitive planting date (DAP) of the crop for jassid
both on USDA accessions and local varieties were 30 DAP (June-July), for whitefly 90 DAP (August-September) and partially only on local varieties, 30-60 DAP (June-August) for thrips.
In a release issued by media liaison unit of Punjab agriculture department, experts said that the enemy pests including Jassid
and Aphid suck juice from different parts of the wheat plants that leave the plant and the grain weak.
Trichomes/hairiness on leaves and stems is a major source of resistance to many insects especially thrips and weevil (Stephens and Lee, 1961) jassid
and mites (Narayanan et al., 1990).
(2013) Nirala showed good performance against jassid
He said that the pest attack on cotton crop like Jassid
increased due to heavy rains and added that it could directly affect on the cotton production.
To control the attack of jassid
, "Confidor" was sprayed twice.
The most economically important of these insect pests are whitefly (Bemisia tabaci Genn.), jassid
(Emrasca devastans Dist.), thrips (Thrips tabaci Lind), a recently introduced pest, cotton mealybug (Phenacoccus solenopsis Tinsley) and bollworm complex.