MOHAMED, A., ABD EL-AZIZ, S. (2013). SUSCEPTIBILITY OF SOME SUNFLOWER CULTIVARS FOR PIERCING SUCKING PESTS IN SOHAG GOVERNORATE. Egyptian Journal of Agricultural Research, 91(1), 125-138. doi: 10.21608/ejar.2013.160938
AZZA A. MOHAMED; SAFAA M. ABD EL-AZIZ. "SUSCEPTIBILITY OF SOME SUNFLOWER CULTIVARS FOR PIERCING SUCKING PESTS IN SOHAG GOVERNORATE". Egyptian Journal of Agricultural Research, 91, 1, 2013, 125-138. doi: 10.21608/ejar.2013.160938
MOHAMED, A., ABD EL-AZIZ, S. (2013). 'SUSCEPTIBILITY OF SOME SUNFLOWER CULTIVARS FOR PIERCING SUCKING PESTS IN SOHAG GOVERNORATE', Egyptian Journal of Agricultural Research, 91(1), pp. 125-138. doi: 10.21608/ejar.2013.160938
MOHAMED, A., ABD EL-AZIZ, S. SUSCEPTIBILITY OF SOME SUNFLOWER CULTIVARS FOR PIERCING SUCKING PESTS IN SOHAG GOVERNORATE. Egyptian Journal of Agricultural Research, 2013; 91(1): 125-138. doi: 10.21608/ejar.2013.160938
SUSCEPTIBILITY OF SOME SUNFLOWER CULTIVARS FOR PIERCING SUCKING PESTS IN SOHAG GOVERNORATE
Plant Protection Research Institute, ARC, Dokki, Giza
Abstract
This study was carried out to evaluate the susceptibility of certain cultivars of sunflower crop ( Giza 102, Pioneer6480, Sakha 53 and Miak) to certain piercing sucking pests’ infestation under field conditions for two successive seasons (2010 & 2011) in Sohag governorate, Egypt. Data revealed that the tested sunflower cultivars have marked variation in their susceptibility to pest infestation. Giza102 & Sakha 53 cultivars were the most susceptible for E. decipiens nymphs and M. persicae pests infestation as it showed a mean number of 18.07 & 18.4 nymphs/15 leaflet & 4.89, 2.07 individual/15 sunflower leaflet followed by, Miak & pioneer6480 during 2010 season, a similar trend was obtained for two pests in 2011. On the other hand, the resistant cultivars to the whitefly infestation could be arranged in ascending as follow: Sakha 53, Giza 102, Miak and Pioneer6480 &. The corresponding infestation rates averaged 49.07, 51.59, 66.52 and 70.96 & 53.67, 55.26, 62.11, 69.78 nymph/15 leafletlets, during 2010 and 2011 seasons, respectively.Concerning susceptibility of sunflower cultivars to , Eutetranycus arabicus infestation statistical analysis revealed that Miak was highly significantl while Giza 102 was less significantly infested in both seasons, meanwhile in T. urticae, the cultivar Pioneer6480 proved to be susceptible than all cultivars with averarge 91.78 and 96.56 individuals/ 15 sunflower leaflets in 2010 and 2011 seasons, respectively; while, Sakha 53 cultivar harboured significantly a lower infestation with average numbers of 46.19 and 57.81 individuals/ 15 sunflower leaflets in 2010 and 2011 seasons, respectively. Regarding to predator mite, Euseius hutu Giza 102 was the most susceptible in two seasons.
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