Citation
Tiong R.H.C., . and Kueh T.K., . (1986) Studies on some cocoa diseases in Sarawak. [Proceedings Paper]
Abstract
Black pod and stem canker occurred in all the major cocoa-growing areas in Sarawak. It was confirmed that Phytophtora palmivora was the causal agent. Pods from hybrids of UITI x SCA12 NA32 x UITI and PA35 x NA32 were less susceptible to infection. Fungicide metalaxyl at 0.06 a.i. active ingredient and fentin-acetate 54 plus maned 18 at 0.1 a.i. significantly reduced pod infection. Pink disease Corticium salmonicolor was serious in cocoa under coconut in coastal areas. Field evaluation of fungicides showed that tridemorph and cuprous oxide at 0.2 a.i. spray application significantly reduced disease index. Vascular streak dieback was recorded in Sarawak in 1978. Field trials 1978-83 showed that when the fertilizer application rate for the affected cocoa was at 132.7 g N: 81.7 g P2 O5: 176.9 g K2O: 22.7 g MgO per tree per annum the infection was reduced to 1.7 on tree counts two years later
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Abstract
Black pod and stem canker occurred in all the major cocoa-growing areas in Sarawak. It was confirmed that Phytophtora palmivora was the causal agent. Pods from hybrids of UITI x SCA12 NA32 x UITI and PA35 x NA32 were less susceptible to infection. Fungicide metalaxyl at 0.06 a.i. active ingredient and fentin-acetate 54 plus maned 18 at 0.1 a.i. significantly reduced pod infection. Pink disease Corticium salmonicolor was serious in cocoa under coconut in coastal areas. Field evaluation of fungicides showed that tridemorph and cuprous oxide at 0.2 a.i. spray application significantly reduced disease index. Vascular streak dieback was recorded in Sarawak in 1978. Field trials 1978-83 showed that when the fertilizer application rate for the affected cocoa was at 132.7 g N: 81.7 g P2 O5: 176.9 g K2O: 22.7 g MgO per tree per annum the infection was reduced to 1.7 on tree counts two years later
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: | Phytophthora |
| AGROVOC Term: | Corticium |
| AGROVOC Term: | Infection |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Norfaezah Khomsan |
| Last Modified: | 24 Apr 2025 05:25 |
| URI: | http://webagris.upm.edu.my/id/eprint/14378 |
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