Afany, Miseri Roeslan and Pulungan, Nur Ainun (2018) THE IMPACT OF HORTICULTURE FARMING PRACTICES IN ANDISOLS FOREST ON SOILS ORGANIC-P CONTENT IN TAWANGMANGU, CENTRAL JAVA. In: international conference on Organic agriculture in The Tropics: State of The Art, Challenges and Opportunities, 20-24 AGUSTUS 2017, YOGYAKARTA.
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Abstract
This research aims at studying the change of organic-P status as an impact of horticultural farming in Andisols forest. Horticulture is an alternative agricultural practice which mainly develops in upland nowadays. However, the presence of this agricultural practice significantly influences to soil chemical properties, at most organic P-content. This research was conducted at five observation sites in the southern slope of Lawu Mountain, Tawangmangu, Central Java. Horticulture farming in this area has been developed for more than 25 years with organic manure application mainly derived from cow dung. This organic manure is applied for 15-25 Mg Ha-1.yr-1. The Andisols in Lawu forest is mostly covered by Pine (Pinus merkusii) and the predominant horticulture vegetation developed in this area is Carrots (Daucus carota). 75 soil samples were taken at five observation sites within the pine forests and carrots horticulture land. The sampling was conducted through 5 replications for each site. The results showed a significant decreasing of organic P-content occurred in the horticulture farming with more than 15 years of cultivation. The decreasing of organic-P content is correlated with the decreasing of organic-C content. There is a positive correlation between organic-P content and organic-C content as well as Fe-humus contents. However, the correlation between organic-P content and pH (H2O) remains negative. Keywords: Organic-P, Andisols forest, Horticultural farming, Soil chemical properties, Tawangmangu
| Item Type: | Conference or Workshop Item (Paper) |
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| Subjects: | S Agriculture > S Agriculture (General) |
| Divisions: | Faculty of Medicine, Health and Life Sciences > School of Biological Sciences |
| Depositing User: | MISERI ROESLAN AFANY |
| Date Deposited: | 18 Jan 2019 08:02 |
| Last Modified: | 18 Jan 2019 08:02 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/18053 |
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