Agroforestry system effects on soil characteristics of tropical soils in the Sarapiqui Region of Costa Rica /
[pH, exchangeable bases, acidity and micronutrients,
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| Format: | Thesis eBook |
| Language: | English |
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[Place of publication not identified] :
[publisher not identified] ;
1997.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | [pH, exchangeable bases, acidity and micronutrients, 1990. Tree components of the agroforestry systems were agroforestry plots. Most micronutrient levels increased over Agroforestry systems have been regarded as an effective alternative for land uses in the humid tropics because they and mineralizable N were poorly correlated with each other in and one undisturbed forest site were sampled (i) to 10 cm for and their impact on selected soil properties as compared to baseline data and pastures utilizing on-farm agroforestry bases and pH was noted in the agroforestry plots. An biological parameters (minerahzable C and N, microbial biomass C and mineralizable C and N, and microbial biomass N biomass C and N). Agroforestry plots, adjacent pasture areas both depths studied. Specific respiratory activity of the bulk density, (ii) at three depth increments to 50 cm for chemical analyses and (iii) at two depth increments to 15 cm different in pastures and agroforestry systems. Microbial different, but was higher than soil from an undisturbed effective cation exchange capacity (ECEC), extractable P, for the biological analyses. Baseline data were available for the chemical properties only. A decrease in exchangeable forest area. in soils under pasture or agroforestry systems even using a increase in SOC was observed in the agroforestry systems microstachyum and Hieroityma alchorneoides. The properties N in soils under pasture and agroforestry were observed. N2-fixing species (S. microstachyum). Carbon to N ratios objectives of this study were to detail agroforestry systems pasture plots at the surface. No differences in minerahzable plots established in the Sarapiqui Region of Costa Rica in present beneficial effects upon soil characteristics. The Soil microbial biomass C and N were not significantly soil organic C (SOC) and total Kjehdahl N (TKN)] and soils under both management systems was not significantly sp.). Extractable P was higher in the surface soil of the studied included soil physical (soil bulk density), chemical systems. Higher minerahzable C levels were observed in the the time span considered. Total Kjehdahl N was not different Vochysia ferruginea and V. guateinalensis, Stryphitodeitdroit were not different from soil in pastures and agroforestry whose tree components were heavy litter producers (Vochysia |
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| Item Description: | "Major subject: Soil Science." Vita. |
| Physical Description: | xi, 103 leaves : illustrations, maps ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references: pages 81-91. |