Abstract
EFFECT OF INFESTATION BY THE PRIMARY PEST, RHIZOPERTHA DOMINICA (F.) ON DIFFERENT WHEAT KERNEL
Shamsher Ali*, Naheed Baloch, Ali Murad Rahoo, Tooba Khan, Abro Zain-ul-Aabdin and Jaweria Shaikh
ABSTRACT
Rhizopertha dominica (F.) (lesser grain borer), is a serious primary injurious pest of stored wheat grain in vast areas of the world. In Pakistan 5-7% of the food grains are lost due to poor storage situation. The adult of lesser grain borer were recorded on three types of wheat, under laboratory condition for some preliminary studies. The Samples were collected of the different varieties of wheat (Abadgar, TD-1 and Moomal) from the Wheat research institute, Sakrand, Sindh. During the observation four parameter weight loss and insect damaged grain, Insect in damaged grain and weight of frass (gm) with relation to abiotic relation (Temperature and Relative humidity) were seen in the six months January to June-2018. During the six months experimentation of Rhizopertha dominica, it was notice that Max: weight loss (14.3±8.42). Insect damaged grains (26.5±6.12) and weight of frass (5.65±0.20) were recorded on wheat variety Abadgar at the average Temp: and R.humidity 35°C, and 63% respectively during the June-2018. There, Min: weight loss (1.12±0.03), Insect damaged grains (4.93±2.67) and weight of frass (1.85±0.21) were recorded on wheat variety Moomal at the average Temp: and R. humidity 20°C, 52% respectively during the January-2018. In contrast to these parameters, Max: Insect undamaged grains (40.4±5.15) was recorded on wheat variety Abadgar during the January-2018. Whereas, Min: was recorded (26.2±6.04) on wheat variety Moomal during the June-2018. Throughout the whole determination it’s noticed that lesser grain borer more time feeding inside the wheat kernel that is why its quickly reducing the weight and makes them hollow husks. This is the first time study lesser grain borer and wheat varieties from the Wheat Research Institute, Sakrand, Sindh, Pakistan.
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