EFFECT OF HORTICULTURAL ,MECHANICAL AND LOCAL CHEMICAL TREATMENTS ON Chlorophorus varius INFESTATION AND YIELD PRODUCTION IN PEACH ORCHARDS. | ||||
| Journal of Plant Production | ||||
| Article 14, Volume 25, Issue 8, August 2000, Page 5219-5227 PDF (797.9 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2000.259561 | ||||
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| Authors | ||||
| A. Y. H. Holwah,1; A. W. Tadros2 | ||||
| 1Horticultural Research Institute, Agricultural Research Center, Giza, Egypt. | ||||
| 2Plant Protection Research Institute, Agricultural Research Center, Dokki 12311,Cairo, Egypt. | ||||
| Abstract | ||||
| The wasp Beetle, Chlorophorus varius Mull. (Coleoptera: Cerambycidae) is a serious pest on peach trees(Prunus persica L.) in Egypt in new reclaimed lands as well as in old valley lands. To eliminate the environmental pollution and magnifying the biological control agents, horticulture (dormant and summer pruning) , mechanical (worming) and local chemical (local painting and spraying treatments) were evaluated. Trials were carried out at El-Khatatba district Menofia governorate during three successive years (1994/95, 1995/96 and 1996/97). The respective percentages reduction in the borer infestation were 18.47 , 8.83 and 22.91% due to dormant pruning, summer pruning, dormant and summer pruning, 6.49% due to worming, 62.98 and 64.80% due to local painting and local spraying as well as 79.05 and 84.37% due to pruning, worming and local painting treatments and pruning, worming and local spraying treatments when applied for only one year. Applying the previous treatments for two successive years the average percentages reduction of the infestation resulted 36.39 , 12.63 , 46.33 , 10.47 , 75.46 , 78.17 , 92.71 and 95.76%, respectively .The accumulative effect the previous treatments for three successive years the percentages reduction of infestation were56.6,19.3 ,65.5,14.5,84.8,86.2,96.6 and 98.6% , respectively . Dormant pruning increased the yield production by 23.8-39.3 %yet summer pruning either reduced the yield by 2.7% in the second season or increased the yield by 2.3% in the third season . However, dormant and summer pruning increased the yield production by 40.0-44.2% .The quality of fruits was improved as the mean number of fruits / tree and the mean number of fruits/kg were reduced by 35.3-38.0 % and 55.1-55.7%, respectively . | ||||
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