Effect of Calcium Polysulfide Applications on Severity of Cocoa Pod Rot (Phytophthora palmivora Butl.) and Fungal Diversity
Indonesian government gives a high priority for the development and revitalization of cocoa production. In 2012/2013, production of cocoa in Indonesia reached 410,000 ton from 1,774,500 ha (about 231 kg ha-1), lower than Ghana which is 835,000 ton from 1,600,300 ha (about 521 kg ha-1). One of the co...
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| Format: | Article |
| Language: | English |
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University of Brawijaya
2017-12-01
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| Series: | Journal of Experimental Life Science |
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| Online Access: | https://jels.ub.ac.id/index.php/jels/article/view/233 |
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| author | Wahyu Widiyasmoro Mintarto Martosudiro Liliek Sulistyowati |
| author_facet | Wahyu Widiyasmoro Mintarto Martosudiro Liliek Sulistyowati |
| author_sort | Wahyu Widiyasmoro |
| collection | DOAJ |
| description | Indonesian government gives a high priority for the development and revitalization of cocoa production. In 2012/2013, production of cocoa in Indonesia reached 410,000 ton from 1,774,500 ha (about 231 kg ha-1), lower than Ghana which is 835,000 ton from 1,600,300 ha (about 521 kg ha-1). One of the constraints of cocoa production in Indonesia is pod rot disease caused by Phytophthora palmivora, which can reduce about 90% of production during wet season. Calcium polysulfide was suggested as one of the potential, cheap and save substance to control P. palmivora. The purpose of this study was to evaluate the calcium polysulfide potential to control the disease and its effect on the phyllosphere-fungal diversity. A positive correlation was found between concentration of calcium polysulfide and inhibition of fungal growth in the media. Otherwise, a negative correlation was found between concentration of calcium polysulfide and fungal biomass. Disease severity of cocoa treated by calcium polysulfide 80 mL L-1 every week was 11.67% significantly lower than control, i.e. 68.33%. Furthermore, it was also found that the index value of fungal diversity on the phylosphere decreased by increasing concentration and interval of calcium polysulfide application. |
| format | Article |
| id | doaj-art-8638e6a0803d4c569297deedd20747e6 |
| institution | OA Journals |
| issn | 2087-2852 2338-1655 |
| language | English |
| publishDate | 2017-12-01 |
| publisher | University of Brawijaya |
| record_format | Article |
| series | Journal of Experimental Life Science |
| spelling | doaj-art-8638e6a0803d4c569297deedd20747e62025-08-20T01:55:21ZengUniversity of BrawijayaJournal of Experimental Life Science2087-28522338-16552017-12-01726975https://doi.org/10.21776/ub.jels.2017.007.02.02Effect of Calcium Polysulfide Applications on Severity of Cocoa Pod Rot (Phytophthora palmivora Butl.) and Fungal DiversityWahyu Widiyasmoro0Mintarto Martosudiro1Liliek Sulistyowati2Surabaya estate crops regional center of seed and plant protection (BBPPTP) Faculty of Agriculture, University of Brawijaya, MalangUniversitas BrawijayaUniversitas BrawijayaIndonesian government gives a high priority for the development and revitalization of cocoa production. In 2012/2013, production of cocoa in Indonesia reached 410,000 ton from 1,774,500 ha (about 231 kg ha-1), lower than Ghana which is 835,000 ton from 1,600,300 ha (about 521 kg ha-1). One of the constraints of cocoa production in Indonesia is pod rot disease caused by Phytophthora palmivora, which can reduce about 90% of production during wet season. Calcium polysulfide was suggested as one of the potential, cheap and save substance to control P. palmivora. The purpose of this study was to evaluate the calcium polysulfide potential to control the disease and its effect on the phyllosphere-fungal diversity. A positive correlation was found between concentration of calcium polysulfide and inhibition of fungal growth in the media. Otherwise, a negative correlation was found between concentration of calcium polysulfide and fungal biomass. Disease severity of cocoa treated by calcium polysulfide 80 mL L-1 every week was 11.67% significantly lower than control, i.e. 68.33%. Furthermore, it was also found that the index value of fungal diversity on the phylosphere decreased by increasing concentration and interval of calcium polysulfide application.https://jels.ub.ac.id/index.php/jels/article/view/233calcium polysulfidecocoaphytophthora palmivora |
| spellingShingle | Wahyu Widiyasmoro Mintarto Martosudiro Liliek Sulistyowati Effect of Calcium Polysulfide Applications on Severity of Cocoa Pod Rot (Phytophthora palmivora Butl.) and Fungal Diversity Journal of Experimental Life Science calcium polysulfide cocoa phytophthora palmivora |
| title | Effect of Calcium Polysulfide Applications on Severity of Cocoa Pod Rot (Phytophthora palmivora Butl.) and Fungal Diversity |
| title_full | Effect of Calcium Polysulfide Applications on Severity of Cocoa Pod Rot (Phytophthora palmivora Butl.) and Fungal Diversity |
| title_fullStr | Effect of Calcium Polysulfide Applications on Severity of Cocoa Pod Rot (Phytophthora palmivora Butl.) and Fungal Diversity |
| title_full_unstemmed | Effect of Calcium Polysulfide Applications on Severity of Cocoa Pod Rot (Phytophthora palmivora Butl.) and Fungal Diversity |
| title_short | Effect of Calcium Polysulfide Applications on Severity of Cocoa Pod Rot (Phytophthora palmivora Butl.) and Fungal Diversity |
| title_sort | effect of calcium polysulfide applications on severity of cocoa pod rot phytophthora palmivora butl and fungal diversity |
| topic | calcium polysulfide cocoa phytophthora palmivora |
| url | https://jels.ub.ac.id/index.php/jels/article/view/233 |
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