SUSCEPTIBILITY OF SOME BEAN VARIETIES; PHASEOLUS VULGARIS (L.)TO APHIS CRACCIVORA AND TETRANYCUS URTICAE PESTS INFESTATION , WITH REFERENCE TO THEIR NATURAL ENIMIES IN FAYOUM GOVERNORATE | ||||
| Fayoum Journal of Agricultural Research and Development | ||||
| Article 2, Volume 27, Issue 1, January 2013, Page 13-20 PDF (588.65 K) | ||||
| Document Type: Research articles. | ||||
| DOI: 10.21608/fjard.2013.193714 | ||||
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| Author | ||||
| H.M. ABD EL-WARETH | ||||
| Plant Protection Research Institute, A.R.C., Dokki, Giza, Egypt | ||||
| Abstract | ||||
| The present investigation was carried out at El-Kasmia village, Etsa district, El-Fayoum Governorate during two growing season 2009 and 2010 to study susceptibility of four bean varieties, Branco, Narina, Giza 4 and Nbrasca to Aphis craccivora Koch and Tetranycus urticae Koch infestation with reference to their natural enemies ; Coccinella undecimpunctata and Chrysoperla carnea . The obtained results indicated that Branco and Narina varieties more susceptible to A. craccivora which recorded (11.5 & 4.7) and 10.4& 4.0) idividuals/20 leaves during the two growing seasons 2009 and 2010, respectively. On the other hand the less variety was Nbrasca which recorded numbers of A. craccivora 6.8 and 2.3 idividuals/20 leaves at 2009 and 2010 seasons respectively. The results show that Giza 4 and Nbrasca varieties were more susceptible to mite infestation T. urticae which recorded mean numbers (171.6 and 140.4) ; (128.5 and 119.2) idividuals/20 leaves respectively; than Branco varieties which recorded (125.3 and 112.2) during the two seasons. On the other hand Narina variety was the last degree by mean 108.5 and 106.2 idividuals/20 leaves at the same trend. Two peaks of C. undecimpunctata during two seasons in April and May which recorded 7.25 and 9.0 individuals/20 leaves during 2009 and 9.5 and 10.25 individuals/20 leaves during 2010. On contract C. carnea was low during two seasons which recorded, 4.75 and 5.0 individuals/20 leaves at May of two seasons. | ||||
| Keywords | ||||
| Susceptibility; bean; varieties; Branco; Narina; Giza 4; Nbrasca; Aphis craccivora; Tetranycus urticae; infestation; natural enemies; Coccinella undecimpunctata and Chrysoperla carnea | ||||
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