LOW OXYGEN ATMOSPHERES TO DISINFEST FABA BEAN FROM BRUCHIDAE | ||||
| Journal of Plant Protection and Pathology | ||||
| Article 6, Volume 25, Issue 8 - Serial Number 2, August 2000, Page 5483-5490 PDF (886.3 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jppp.2000.259596 | ||||
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| Authors | ||||
| M. Y. Hashem,; A. A.A. Sharaf El-Din | ||||
| Department of Economic Entomology and Pesticides, Fac. of Agric., Cairo Univ., Egypt | ||||
| Abstract | ||||
| Bruchids are major insect pests of stored seed of faba bean and the use of controlled atmospheres (CAS) has gained popularity in recent years for the control of these pests. This study was carried out to investigate the influence of low oxygen atmospheres on the control of bruchids in infested faba beans. Controlling of infestation caused by Callosobruchus maculatus (F.) and Bruchus rufimanus Boh. in 6 different varieties was tested under two nitrogen (N2) atmospheres with low oxygen (O2) contents of 2% and 3% at two different exposure periods 7 and 14 days at 34 ± 4 °C and 70 ± 5% R.H. storage conditions. The above mentioned treatments have been controlled the infestation rates for 4-6 months from July to October-December. After this period, the infestation rates started to increase gradually until reaching 100% on the variety Giza 674 in April, while for other varieties it ranged between 17.7% (Giza 716) and 80.2% (Giza 3) at 3% O2 and 7 days exposure. At 2% O2 and 14 days exposure, the infestation rates reached up to 62.2% (Giza 674) and ranged between 6.6% (Giza 716) and 30.4% (Giza 429). The conclusion of this investigation is to store faba bean for 6 months only after treatment with 2% O2 and 98% N2 for 14 days exposure. | ||||
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