eng
Mansoura University, Faculty of Agriculture
Journal of Plant Protection and Pathology
2090-3677
2090-3758
2011-09-01
2
9
773
781
10.21608/jppp.2011.86524
86524
Original Article
SUSCEPTIBILITY OF SOME EGYPTIAN WHEAT VARIETIES TO THE INFESTATION WITH THE GRANARY WEEVIL, Sitophilus granarius (L). (COLEOPTERA: CURCULIONIDAE).
M. Mahmoud
1
Y. Darwish
2
Y. Omar
youssf@yahoo.com
3
R. Hassan
4
Plant Protection Dept., Fac. Agric., Al-Azhar Univ., Egypt
Plant Protection Dept., Fac. Agric., Assiut University, Egypt
Plant Protection Dept., Fac. Agric., Assiut University, Egypt
Plant Protection Dept., Fac. Agric., Al-Azhar Univ., Egypt
The present investigation was carried out to evaluate the relative susceptibility of ten Egyptian wheat varieties to the infestation with the granary weevil, Sitophilus granarius (L). The loss in grain weight and the percentage of infested grains were determined in choice and force infestation tests. The obtained results, either in the choice or non-choice infestation tests, indicated that non of the tested varieties were completely resistant against the attack by the insect pest; but their susceptibility to the infestation varied considerably. Variety Gemmiza 7 was the most susceptible with an average infestation level of 18.33% and a maximum weight loss of 6.41 g/100 g grains. Oppositely, variety Beny-sewif 4 was the least susceptible with an infestation level of 3.00% and minimum weight loss of 1.64 g/100 gm. A significant positive correlation was found between the infestation of grains and weight loss (r= 0.86-0. 95**).
https://jppp.journals.ekb.eg/article_86524_7cefa8ec5db36c015415a3778c71f143.pdf
Stored grain pests
Wheat varieties
Sitophilus granarius
susceptibility
eng
Mansoura University, Faculty of Agriculture
Journal of Plant Protection and Pathology
2090-3677
2090-3758
2011-09-01
2
9
783
789
10.21608/jppp.2011.86525
86525
Original Article
FIELD EVALUATION OF DIFFERENT MANUAL INJECTION METHODS FOR CONTROLLING RED PALM WEEVIL, Rhynchophorus ferrugineus (OLIVIER) COMPARED WITH A MECHANICAL DEVISE
A. Abd-El-Hady
1
Laila El Gohary
2
F. Abd-El-Hady
3
Faculty of Agric. Mansoura University, Mansoura, Egypt.
Faculty of Agric. Mansoura University, Mansoura, Egypt.
Plant Protection Research Institute, Agric. Res. Center Giza - Egypt.
Field experiments were carried out to evaluate the efficiency of five manual trunk injection methods for controlling red palm weevil, Rhynchophorus ferrugienus (Olivier). Fifteen date palms with different status of infestation (5 limited, 5 moderated and 5 severe) for each method was injected by Chloropyrifos 48% EC at rate of 0.3%.
One of the most effective manual injection methods was compared with a mechanical device using Phenothoate 50% EC solution at the rate of 0.3%. Data showed that, the manual method was more successful than mechanical device. The manual method caused 100% recovery in the lowest level of infestation only, while it caused 80% recovery at the other two levels of infestation.
https://jppp.journals.ekb.eg/article_86525_2a0c3937764e3fd29664bb11fbca4183.pdf