Citation
Lim G.T., . and Phua P.K., . (1986) Effect of cocoa pod borer Acrocercops cramerella Snellen on yield and bean size. [Proceedings Paper]
Abstract
A comparative study of the effect of cocoa pod borer Acrocercops cramerella Snellen Lepidoptera: Gracillariidae on yield bean loss and bean size was made in a clonal field. Fifty-nine clones used for breeding were used for investigation. The methods involved comparisons between healthy and damaged pods and the beans in them. Evaluation of bean loss proved to be the best method of demonstrating differences in pod borer infestation and damage among the clones. None of the clones evaluated was found to be free from cocoa pod borer attack. The pod infestation ranged from 61.78 to 98.53 and resulted in wet bean loss ranging from 25.04 to 93.28. A significantly positive correlation between pod infestation and loss of wet beans was observed. Generally dried beans from infested pods were lighter in weight than those from the healthy pods. These beans were noted to be significantly reduced in thickness but length and width of the beans were not affected. Of the clones examined PA7 UA30 UA12 UA9 and NA34 were observed to be more tolerant whereas ICS98 I594 I206 NGK16 and WA331 were most susceptible to cocoa pod borer infestation
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Abstract
A comparative study of the effect of cocoa pod borer Acrocercops cramerella Snellen Lepidoptera: Gracillariidae on yield bean loss and bean size was made in a clonal field. Fifty-nine clones used for breeding were used for investigation. The methods involved comparisons between healthy and damaged pods and the beans in them. Evaluation of bean loss proved to be the best method of demonstrating differences in pod borer infestation and damage among the clones. None of the clones evaluated was found to be free from cocoa pod borer attack. The pod infestation ranged from 61.78 to 98.53 and resulted in wet bean loss ranging from 25.04 to 93.28. A significantly positive correlation between pod infestation and loss of wet beans was observed. Generally dried beans from infested pods were lighter in weight than those from the healthy pods. These beans were noted to be significantly reduced in thickness but length and width of the beans were not affected. Of the clones examined PA7 UA30 UA12 UA9 and NA34 were observed to be more tolerant whereas ICS98 I594 I206 NGK16 and WA331 were most susceptible to cocoa pod borer infestation
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| Additional Information: | Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. SB267 I61 1984 Call Number |
| AGROVOC Term: | Theobroma cacao |
| AGROVOC Term: | Acrocercops cramerella |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Norfaezah Khomsan |
| Last Modified: | 24 Apr 2025 05:25 |
| URI: | http://webagris.upm.edu.my/id/eprint/14359 |
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