MESBAH, A., SHOEB, M., EL-HENEIDY, A. (2003). PRELIMINARY APPROACH TOWARDS THE USE OF THE EGG PARASITOID, TRICHOGRAMMATOIDAE BACTRAE NAGARAJA AGAINST COTTON BOLLWORMS IN EGYPTIAN COTTON FIELDS. Egyptian Journal of Agricultural Research, 81(3), 981-995. doi: 10.21608/ejar.2003.281430
AHMED H. MESBAH; MONA A. SHOEB; AHMED H. EL-HENEIDY. "PRELIMINARY APPROACH TOWARDS THE USE OF THE EGG PARASITOID, TRICHOGRAMMATOIDAE BACTRAE NAGARAJA AGAINST COTTON BOLLWORMS IN EGYPTIAN COTTON FIELDS". Egyptian Journal of Agricultural Research, 81, 3, 2003, 981-995. doi: 10.21608/ejar.2003.281430
MESBAH, A., SHOEB, M., EL-HENEIDY, A. (2003). 'PRELIMINARY APPROACH TOWARDS THE USE OF THE EGG PARASITOID, TRICHOGRAMMATOIDAE BACTRAE NAGARAJA AGAINST COTTON BOLLWORMS IN EGYPTIAN COTTON FIELDS', Egyptian Journal of Agricultural Research, 81(3), pp. 981-995. doi: 10.21608/ejar.2003.281430
MESBAH, A., SHOEB, M., EL-HENEIDY, A. PRELIMINARY APPROACH TOWARDS THE USE OF THE EGG PARASITOID, TRICHOGRAMMATOIDAE BACTRAE NAGARAJA AGAINST COTTON BOLLWORMS IN EGYPTIAN COTTON FIELDS. Egyptian Journal of Agricultural Research, 2003; 81(3): 981-995. doi: 10.21608/ejar.2003.281430
PRELIMINARY APPROACH TOWARDS THE USE OF THE EGG PARASITOID, TRICHOGRAMMATOIDAE BACTRAE NAGARAJA AGAINST COTTON BOLLWORMS IN EGYPTIAN COTTON FIELDS
Plant Protection Research Institute, Agricultural Research Center, Dokki, Giza, Egypt
Abstract
A trial was carried out to evaluate the efficiency of releasing namely egg parasitoid, Trichogrammatoidea backs. Nagaraja to control the cotton bollworms; pink bollworm (PBW) and spiny bollworm (SBW), compared to insecticides, in cotton fields at Sakha Research Station, Kafr EI-Sheikh Govemorate for three successive cotton growing seasons 1999-2001. Highest rates of infestation in fallen cotton flower buds and/or squares reached 56, 56 and 62 % with CLW, SSW and PBW, respectively. Highest rates of infestation (44 and 40 %) were recorded in the green bolls infested with 513W and PBW, respectively. Parasitoid releases proved best results in reducing PBW infestations in the fallen cotton flower buds and/or squares and the green bolls compared with both insecticide and check treatments. The reduction attained 9.4, 39.4 and 7.7 % in the fallen cotton flower buds and/or squares, and 36.5, 41.7 and 25.4 % in the green bolls in seasons 1999, 2000 and 2001, respectively. In case of the SBW, the results varied from one treatment to another and from one season to another. Superior reduction figures of SBW infestation were achieved when the IGR (Ateroon) + parasitoid were alternatively applied compared with both the parasitoid releases and/or insecticide applications. The reduction reached 4.6, 27.9 and 63/ % in the green bolls In seasons 1999, 2000 and 2001, respectively. Highest numbers of predators was recorded in Trichogramma released areas (47 %), followed by the control (34.8 %), the insecticidal treated areas were the least (17.6 %).
View on SCiNiTO
Top