Population dynamics of some insects infesting Mangetout peas at different plantation dates | ||
| Journal of Pest Control and Environmental Sciences | ||
| Volume 8, Issue 3, December 2000, Pages 115-130 PDF (492.47 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpces.2000.460581 | ||
| Author | ||
| Neima I. Noussier* | ||
| Plant Protection Research Institute, Algaculture. Research Station of Alexandria, Sabahia, Alexandria | ||
| Abstract | ||
| The mangetout cultivar Oregon sugar Pod II was cultivated in the farm of El-Roda Co. west of Alex. in Nurabia. The field experiment compared the level of infestation of the four pests: the cotton leafworm, the spider mites, the leafminer, and the thrips. Each treatment was with four replicates. Each replicate (270 m2). Six plantation dates were compared for the levels of infestation. The climatic maximum and minimum average temperature, and relative humidity were recorded. Correlation coefficient between average temperature; relative humidity, and the infestation levels of the monitored four pests on the peas plants of mangetout were computed. The data indicated significant positive correlation between the counts of cotton leafworm larvae or moths, or thrips infestation with minimum and maximum temperature average and relative humidity. On the contrary there was a negative correlation between levels of the spider mites or the leafminer infestation and these climatic parameters. The effect of plantation dates revealed that late October and early November are the most optimum dates for planting where least levels of infestations were recorded. However, and because the mangetout crop is freshly needed all the season, therefore it will be cultivated successively every ten days. The present information will be helpful in predicting the required pest management program. | ||
|
Statistics Article View: 1 |
||
