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BIOLOGICAL AND CHEMICAL CONTROL OF DATE PALM OFFSHOOTS DEATH CAUSED BY CHALAROPSIS RADICICOLA )BLISS)C. MOREAU | ||
| Basrah Journal of Agricultural Sciences | ||
| Article 11, Volume 23, Issue 1, 2010, Pages 142-161 PDF (0 K) | ||
| DOI: 10.33762/bagrs.2010.56625 | ||
| Authors | ||
| Alaa N. Ahmed; Mohammad A. Fayad; Yehya A. Salih | ||
| Abstract | ||
| This study was conducted to evaluate the effect of biocontrol agent Trichoderma harzianum , fungicides and there combination against the pathogenic fungus Chalaropsis radicicola causing date palm offshoots death .The study of antagonism between the fungus T.harzianum and C.radicicola showed that the biofungus completely inhibited the growth of C.radicicola . Bayfidan and Benomyl fungicides were found to be the most effective against C.radicicola as percentage of growth inhibition reached to 95.21 and 93.29% respectively, compared to 8% for Monceren fungicide , while Vacomyl-MZ and Benomyl were more effective against T.harzianum in percent inhibition of 83.94 and 82.38% respectively, compared to 4.71% for Eukoshen –bro and Monceren fungicides . The results of field experiment revealed that the best treatments in reducing the date palm offshoots death were the treatments T.harzianum + Bayfidan and T.harzianum + Benomyl as infection rate was 11.11% compared to 55.55% for control treatment . The positive effect of biofungus (T.harzianum) and Bayfidan fungicide reflected on leaves total chlorophyll content which reached to 3.63 mg/100g compared to 0.88 mg/ 100g of control treatment (soil with pathogen only) . | ||
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