THE DAMAGE OF THE NYMPHS AND ADULTS NUMBER OF SUNN PEST Eurygaster integriceps PUTON IN THE WEIGHT OF THOUSAND GRAINS, GRAINS YIELD AND PROTEIN SEDIMENTATION FOR FOUR WHEAT VARIETIES IN DUHOK PROVINCE
Mesopotamia Journal of Agriculture,
2012, Volume 40, Issue 0, Pages 329-340
AbstractField experiment was conducted to estimate the damage caused by number of nymphs and adults of Sunn Pest Eurygaster integriceps Puton to four wheat varieties (Aras, Tamuz-2, Atra,S and Crezo) In Duhok province during both seasons 2004-2005 and 2005-2006. It has been shown that if there is increasing in the adult Sunn Pest from one pair to five pairs/m2 and from five to ten nymphs/m2, there would be decreasing in the weight levels of 1000-grain, grain yield (Kg/donum) and protein sedimentation value/cm3 for wheat varieties Aras, Tamuz-2, Atra,S and Crezo. The above studied characters have influenced greatly in the case of bread wheat in comparison with the durum wheat. The weight of 1000-grain, grain yield and protein sedimentation for durum wheat reached 42.99, 42.91 g & 980.91, 963.24 Kg/donum & 17.95, 16.36 cm3 compared with bread wheat 28.28, 27.89 g & 825.64, 826.21 Kg/donum & 23.02, 23.83 cm3 for two seasons, respectively.
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