METAWEH, H., GOMAA, E., SHERIF, R., ABDEL- FATTAH, T. (2002). TOXICITY AND PERSISTENCE OF SOME POISON BAITS AGAINST THE FOURTH NYMPHAL INSTAR OF TWO SPECIES OF GRASSHOPPERS. Egyptian Journal of Agricultural Research, 80(2), 557-569. doi: 10.21608/ejar.2002.306538
HAMZA H. METAWEH; ELADROSY A. A. GOMAA; REFAT M. SHERIF; THARWAT A. ABDEL- FATTAH. "TOXICITY AND PERSISTENCE OF SOME POISON BAITS AGAINST THE FOURTH NYMPHAL INSTAR OF TWO SPECIES OF GRASSHOPPERS". Egyptian Journal of Agricultural Research, 80, 2, 2002, 557-569. doi: 10.21608/ejar.2002.306538
METAWEH, H., GOMAA, E., SHERIF, R., ABDEL- FATTAH, T. (2002). 'TOXICITY AND PERSISTENCE OF SOME POISON BAITS AGAINST THE FOURTH NYMPHAL INSTAR OF TWO SPECIES OF GRASSHOPPERS', Egyptian Journal of Agricultural Research, 80(2), pp. 557-569. doi: 10.21608/ejar.2002.306538
METAWEH, H., GOMAA, E., SHERIF, R., ABDEL- FATTAH, T. TOXICITY AND PERSISTENCE OF SOME POISON BAITS AGAINST THE FOURTH NYMPHAL INSTAR OF TWO SPECIES OF GRASSHOPPERS. Egyptian Journal of Agricultural Research, 2002; 80(2): 557-569. doi: 10.21608/ejar.2002.306538
TOXICITY AND PERSISTENCE OF SOME POISON BAITS AGAINST THE FOURTH NYMPHAL INSTAR OF TWO SPECIES OF GRASSHOPPERS
1Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt.
2Plant Protection Department. Faculty of Agriculture, Zagazig University, Egypt.
Abstract
The eftioney of some insecticides as poison baits against 4th nymphal instar of the grasshoppers Euprepocnomis plorans paeans Charp. and Motorcars annulosa Walker were tested The toxicity of Umbria-whalothrin ( Kindo) based on its Loso values as poison baits using different carriers after 24 and 72 hrs. against Eplorans Swans was arranged descendingly as follows : corn hull > wheat bran > groundnut husks > bean hay . Based on Logo values in ppm after 24 and 72 hrs., the descending order was wheat bran > groundnut husks > corn hull > bean hay. As for H.a 171.11058. the toxicity alter 24 and 72 hrs. based on Lei° or Lcgo was arranged in a descending order as follows: wheat bran >or . corn hull > groundnut husks > bean hay.ConeAming fenitrothion (Sumithion ) baits against E.plorans storms based on Lego and Lego values after 24 and 72 hrs. bean hay bait showed the highest toxicity followed descendingly with corn hull, wheat bran And groundnut husks . In case of H. annalosa, the toxicity based on Lest) or Lego alter 24 hrs. could be arranged as follows: corn hull > groundnut husks > wheat Wan > bean hay, but alter 72 hrs. bean hay bait occupied the second position followed by groundnut husks and wheat bran. With respect to earbosullan (Marshal) baits againt E. Morans *vans , the toxicity based on Lost) after 24 or 72 hr. were arranged doscendingly as follows : corn hug. or > groundnut husks > wheat bran > bean hay .Based on Lego values corn hull bait was as toxic as ground. nut husks bait followed descendingty by bean hay bait and finally wheat bran bait . In case of H WM:OS& the arrangements were : groundnut husks > bean hay > corn hull > wheat bran based on Lego values after 24 or 72 hrs.. while based on Lego after 24 hr values corn hull > bean hay > groundnut husks > wheat bran. In case of after 72 hrs. groundnut husks became the first. Generally . lambda-cyhalothrin as poison baits with all carriers . revealed higher toxicity than carbosullan and lenitrothion against the two species of grasshoppers. However. H. annubsa was more susceptible to the toxicants tested than E.ptorans plorans The persistences of the three insecticides as poison baits were tested against E. pbrans Oceans
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