Effect of phosphorus and zinc on soybean susceptibility to insect infestation | ||
| Journal of Pest Control and Environmental Sciences | ||
| Volume 6, Issue 1, June 1998, Pages 101-110 PDF (506.32 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpces.1998.461505 | ||
| Author | ||
| Farida A. Taman* | ||
| Plant Protection Research station, Agricultural Research Center, El-Sabahia Alexandria, Egypt | ||
| Abstract | ||
| A greenhouse was conducted to study the effect of phosphorus and zinc on soybean plant (Clycin max L.) susceptibility to some insect infestations. Using different treatments of soybean seeds inoculated with okadin only, okadin in combination with zinc and phosphorus levels of 8 and 40 pom respectively, abo a pots without any treatment used as a control. The previous levels of Zn and P showed lower population density with Spodoptera fivoralis (Boisd.), Aphis gossypii and Bemisia tabaci (Genn.) on soybean where the total number of insects were 23. 84 and 29 insect per 100 leaves respectively followed by the control as 42, 160 and 53 insect per 100 leaves respectively while the highest level of population density occurred in the pots which seeds incoculated with okadin only 90, 196 and 90 insect per 100 leaves respectively The least degree of infestation occurred in the soybean plants treated with Zn and P Followed by control side the highest level of infestation occurred in the pots which seeds were inoculated with okadin. The results showed that balanced phosphorus and Zinc nutrition is essential not only for plant growth but also for decreasing the plant susceptibility to insect infestation. | ||
|
Statistics Article View: 4 |
||
