Evizal, Rusdi (2009) BIOMASS PRODUCTION OF SHADE-GROWN COFFEE AGROECOSYSTEMS. In: International Seminar on Sustainable Biomass Production and Utilization Challenges and Opportunities (ISOMASS), August 3-4, Bandar Lampung.

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Abstract Biomass production has significance on sufficing human need, belowground C stock, nutrient cycling, soil organism activity, soil conservation, and weed diversity. To evaluate biomass production (litter fall, pruning residue, and weeding residue) a study was conducted at Conservation and Sustainable Management of Below-Ground Biodiversity (CSM-BGBD) site in Sumberjaya Sub-district, West Lampung, Indonesia, during 2007-2008 using two plots of Coffea canephora. Plot I was a long term experimental plot, established from shrub to young coffee agro-ecosystems with treatments of open-grown (sun) coffee and Michelia champaca, Gliricidae sepium, and Erythrina indica shaded-grown coffee. Plot II was mature coffee fields of 15 years old with the same types of shade trees. The results were: (1) Based on total litter fall, pruning residue, and weed residue, shrub converting into sun coffee or technical shade-grown coffee agro-ecosystem would not significantly change biomass production but biomass structure was changed; (2) Weeding residue was still the major contributor of biomass production in young coffee agroecosystems and in mature open-grown (sun) coffee; (3) In mature agro-ecosystems, biomass harvested of coffee bean was only 4-8% of total biomass production; (4) Based on pruning residue, mature sun coffee yielded the lowest wood biomass production; (5) Mature sun coffee supplied the lowest C of litter fall while Erythrina and Michelia shaded coffee yielded the highest C. Key words: Coffee, biomass, c stock, litter fall, pruning residue, weeding, shade tree

Item Type: Conference or Workshop Item (Paper)
Subjects: S Agriculture > S Agriculture (General)
Divisions: Fakultas Pertanian (FP) > Prodi Agroteknolgi
Depositing User: RUSDI EVIZ
Date Deposited: 02 May 2019 04:17
Last Modified: 02 May 2019 04:17
URI: http://repository.lppm.unila.ac.id/id/eprint/11098

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