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Articles by Rab Dino Khuhro
Total Records ( 4 ) for Rab Dino Khuhro
  Imtiaz A. Nazamani , Muzaffar A. Talpur , Rab Dino Khuhro and Shafi M. Nizamani
  The resistance level of ten cotton cultivars viz, AEH-1, AEH-2, AEH-4, AEH-6, CRIS-9, CRIS-121, CRIS-124, CRIS-128, CRIS-129 and Red Okra to sucking complex i.e. thrips, jassids, and whiteflies was evaluated in the cotton experimental field of IPM at Agriculture Research Institute, Tandojam during Summer, 2000. It was observed that the cultivar AEH-4 showed comparatively greater resistance to attack of thrips (infestation per leaf basis) when compared with rest of the cultivars tested and cultivar AEH-2 showed relative susceptibility to thrips attack. Cultivars AEH-1, AEH-4 and AEH-6 were highly susceptible to jassid, whereas cultivars CRIS-129, CRIS-121, CRIS-124, Red Okra, CRIS-128, AEH-2 and CRIS-9, showed medium response to jassid attack. The population of whitefly illustrate that cultivar Red Okra was found resistant to a greater level against this pest on per leaf infestation basis. It is concluded that thrips, jassids and whiteflies all attacked the cotton cultivars tested. Although, whiteflies population was very low thoughtout the observation period and its population was below economic injury level. The population of thrips rapidly increased between June 27th to July 11th and then sharply declined up to August 8th. After this date the population of thrips remained very low and did not exceed the level of one thrip per leaf infestation, while jassids population exceeded the economic injury level from July 11th to August 16th. It could, therefore, be inferred that control strategies to combat sucking insect pest should be planned during vegetative phase. However, the resistant cotton cultivars may be exploited to avoid environmental pollution and residual problems of insecticides.
  Muzaffar A. Talpur , Rab Dino Khuhro , Maqsood A. Rustamani and Imtiaz A. Nizamani
  The incidence and abundance of insect pests associated with sesame varieties were recorded during Summer, 2002 in the experminental field of Oilseed Section, Agriculture Research Institute, Tanadojam. Four sesame varieties S-17, PR-19/9, PR-28/88 and PR-37/88 were tested. Five insect species i.e. plant bug, whitefly, aphid, thrip and leaf rolled/webber were recorded attacking sesame. Leaf roller/webber was found in highest number during capsule formation and early vegetative stage, while lowest during flowering. Whitefly and bug population was relatively higher during the later vegetative phase. Thrips and aphids were observed from seedling stage and remained active upto crop maturity. However, aphid population was alarming and reached at peak in the 10th week in August. The varieties PR-19/9 and S-17 showed relative resistance against these insects, while PR-37/88 and PR-29/88 were relative susceptible for these insect pests. The varieties PR-19/9 and S-17 yielded significantly higher than susceptible ones i.e. PR-29/88 and PR-37/88.
  Abdul Ghani Lanjar , Muzaffar A. Talpur , Rab Dino Khuhro and Khalid H. Qureshi
  Occurrence and abundance of grasshopper species on rice crop was monitored on rice variety IRRI-6 at Rice Research Institute, Dokri during summer of 2001. The four species infesting rice crop recorded were, Hieroglyphus banian Fb. (Rice grasshopper), Oxya nitidula Willemse (Small green grasshopper), Chrotogonus trachypterus trachypterus Blanchard (Surface grasshopper) and Aiolopus tamulus F. (Small grasshopper). Chrotogonus trachypterus trachypterus was recorded in maximum number (12.8 nymphs and 39-l2 adults/observation) during July-October with mean temperature of 37.95 °C Aiolopus tamulus and Oxya nitidula were observed with their maximum population of nymphs (37.6 and 51.0/observation) and adults (39.0 and 70.0/observation), respectively during September-October with mean temperature range of 34.02-37.95 °C. Species H.banian was observed maximum during August-October with (4.6 nymphs and adults 15.2/observation) under mean temperature range of 35.65-37.95 °C. Maximum nymphal activity of all grasshopper species was noticed during three weeks after transplanting of crop and adults were maximally active at crop maturity.
  Maqsood A. Rustamani , Muzaffar A. Talpur , Rab Dino Khuhro and Hussain Bux Baloch
  Five coarse grain rice varieties (IR-6, IR–6- 18, IR-8, Shadab, Shua-92) and five fine grain varieties (Basmati-370, Jajai-33, Jajai-77, Sonahri Sugdasi, Sonahri Sugdasi-5) were examined to determine the oviposition preferences and infestation of yellow stem borer in the experimental field of Nuclear Institute of Agriculture (NIA) at Tandojam during (Kharif) 2001. A differential response of varieties was observed towards the ovipostion preference by borer. Shua-92 variety was least preferred and Sonahri Sugdasi as most preferred for oviposition. Two oviposition peaks were recorded, the first one during vegetative growth period and other during reproduction period. The population infestation trend showed that amongst the coarse grain varieties Shadab was comparatively less susceptible and IR-6 susceptible to borer attack, whereas, amongst the varieties of fine grain, Basmati-370 and Sonahri Sugdasi suffered less damage of borer. The oviposition had positive significant correlation with dead hearts and white heads whereas, borer infestation had negative significant correlation with yield.
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