METWALLY, E., HASSANEIN, S., AFSAH, A. (1995). SEASONAL POPULATION ACTIVITY OF SUCKING PESTS INFESTING COMMON BEAN AND SQUASH PLANTS AT GEMMEZA REGION, GHARBIA GOVERNORATE, EGYPT. Egyptian Journal of Agricultural Research, 73(3), 653-667. doi: 10.21608/ejar.1995.441934
EL-SAYED M. METWALLY; SAD S. M. HASSANEIN; ABDEL-GABER F. E. AFSAH. "SEASONAL POPULATION ACTIVITY OF SUCKING PESTS INFESTING COMMON BEAN AND SQUASH PLANTS AT GEMMEZA REGION, GHARBIA GOVERNORATE, EGYPT". Egyptian Journal of Agricultural Research, 73, 3, 1995, 653-667. doi: 10.21608/ejar.1995.441934
METWALLY, E., HASSANEIN, S., AFSAH, A. (1995). 'SEASONAL POPULATION ACTIVITY OF SUCKING PESTS INFESTING COMMON BEAN AND SQUASH PLANTS AT GEMMEZA REGION, GHARBIA GOVERNORATE, EGYPT', Egyptian Journal of Agricultural Research, 73(3), pp. 653-667. doi: 10.21608/ejar.1995.441934
METWALLY, E., HASSANEIN, S., AFSAH, A. SEASONAL POPULATION ACTIVITY OF SUCKING PESTS INFESTING COMMON BEAN AND SQUASH PLANTS AT GEMMEZA REGION, GHARBIA GOVERNORATE, EGYPT. Egyptian Journal of Agricultural Research, 1995; 73(3): 653-667. doi: 10.21608/ejar.1995.441934
SEASONAL POPULATION ACTIVITY OF SUCKING PESTS INFESTING COMMON BEAN AND SQUASH PLANTS AT GEMMEZA REGION, GHARBIA GOVERNORATE, EGYPT
1Plant Protection Department, Faculty of Agriculture, Zagazig University, Egypt
2Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt
Abstract
Seasonal population activity of certain leaf pests attacking com-mon bean ad squash vegetable plants was studied during summer and nili plantation of the two consecutive years 1991 and 1992 at Gemmeza region, Gharbia Governorate, Egypt During summer plantation, Aphis craccivora Koch in 1991 and Bemisia tabaci (Genn.) in 1992 did not invade common bean leaves. The initial occurrence of Aphis gossypii Glover, Aphis craccivora Koch, Myzus persicae Sulz., Empoasca decipiens Paoli, Bemisia tabaci (Genn.), Thrips tabaci Lind. and Tetranychus spp. took place after about 2-4 weeks from sowing. These pests had different numbers of population peaks showing 1-4 peaks in the first year and 1-2 peaks in the second according to the pest and the season of activity. In both 1991 and 1992, nili common bean leaves were completely free from Tetranychus spp. Individuals of the two species of aphids, A_ craccivora and M. persicae disappeared only in the first year. All tested insects began to appear after 2-3 weeks from sowing and showed 1-3 levels of maximum population. A. craccivora and E. decipiens in the first year and M. persicae in the second did not occur on summer squash leaves. A. gossypii, A. craccivora and T. tabaci started to infest summer squash more early when the plants reached two weeks in age, whereas the initial appearance of E. decipiens, B. tabaic and Tetranychus spp. varied from one year to another. The seasonal activity of these pests was restricted in the second half of summer squash growing season of 1992. The aforementioned pests had 1-3 peaks. Immature stages of B. tabaci occurred in high numbers on nili squash leaves through all the period of its growing season showing two
View on SCiNiTO
Top