Document Details
|
Document Type |
: |
Thesis |
|
Document Title |
: |
Efficacy of Some Insect Predators and plants extracts for controlling aphid pest in Huda Al-Sham Region كفاءة بعض المفترسات الحشرية و المستخلصات النباتية لمكافحة آفة المن بمنطقة هدى الشام |
|
Subject |
: |
Faculty of Environmental Sciences |
|
Document Language |
: |
Arabic |
|
Abstract |
: |
This field experiment was conducted at Huda Al-Sham Station for Agricultural Research, affiliated to King Abdulaziz University in Jeddah. In this experiment, squash was cultivated in ponds and exposed to the cotton aphid Aphis gossypii clovet, which are considered harmful pests to different crops, in order to study the possibility of treating them with the Methanolic plant extract treatments of Lantana camara, as well as treating squash by using the predatory ladybird 7 spots Coccinella septempunctata L.. The Methanolic plant extract was sprayed on the leaves of saquash at concentrations of 250, 500 and 1000 ppm as well as in another treatment, with the addition of the extract, 4 adults of the ladybird 7 spots C. septempunctata were placed. The treatments were nine levels which include the plant extract alone ( 3 concentrations), the ladybird 7 spots C.septempunctata alone, the plant extract ( 3 concentrations) + the ladybird 7 spots C.septempunctata, the negative control treatment (negative contiol) in which squash plants were infested with the aphids without any treatments, and the positive control treatment (positive control) in which squash plants were healthy from infestation by aphids and without processing. The experiments were repeated 4 times. The Methanolic plant extract of L. camara had a significant effect on aphids, as it reduced the numbers of aphids, and the higher concentration of the plant extract cause the greater decrease in the numbers of aphid. The ladybird 7 spots C. septempunctata also had an effective effect on reducing aphids. The number of aphids was significantly decreased when the ladybird 7 spots C. septempunctata was individually added, where this decrease exceeded all treatments. The addition of the the ladybird 7 spots C. septempunctata with the tested plant extracts was also effective, especially with the increase in the concentration of the plant extracts, and the higher concentration of the extracts showed the lower number of aphids on the squash plant. Moreover, the use of the ladybird 7 spots C. septempunctata without the plant extract also led to a significant increase in the wet weight of squash plants, where the wet weight of squash plants increased to the highest level that exceeded all other treatments. Likewise, when the C. septempunctata was used with the extract, the wet weight of the squash plant increased and kept increasing with the increased the concentration of plant extracts. In conclusion, the results of the presented study can be utilized on the sustainable production of squash under open field conditions to reduce the side effect of applying chemical pesticides. |
|
Supervisor |
: |
Dr. Khaled Asiri |
|
Thesis Type |
: |
Master Thesis |
|
Publishing Year |
: |
1445 AH
2023 AD |
|
Added Date |
: |
Sunday, October 22, 2023 |
|
Researchers
| فهد عبدالله العتيبى | Alotaibi, Fahad Abdullah | Researcher | Master | |
|
Back To Researches Page
|