Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 560226
Title Efectos de poda y fertilización en los rendimientos de jatropha bajo condiciones de pequeños agricultores en un bosque seco tropical de ecuador
Author(s) Cañadas-López, Álvaro; Rade-Loor, Diana; Siegmund-Schultze, Marianna; Vargas-Hernández, Jesús; Wehenkel, Christian
Source Revista Facultad Nacional de Agronomia Medellin 73 (2020)1. - ISSN 0304-2847 - p. 9089 - 9097.
DOI https://doi.org/10.15446/rfnam.v73n1.79059
Department(s) Land Use and Food Security
Publication type Refereed Article in a scientific journal
Publication year 2020
Keyword(s) Biodiesel - Jatropha curcas - Marginal land - Seed productions
Abstract

Jatropha seed is a biomass suitable for bioenergy production that can be produced by smallholders, even on marginal lands. However, the current oilseed production is too low to meet the needs of the planned renewable electricity system in the Galapagos Islands. Pruning and fertilization are management options that can be used to increase the dry seed yields. The effects of both treatments were tested in a split-plot design with jatropha trees, which were monitored during a three-year production period. The average seed production was 643±58 kg ha-1 year-1 in the unpruned trees and 696±50 kg ha-1 year-1 in the pruned trees. Although this difference is small, it is expected to increase over time. The pruned trees developed more slowly than the unpruned trees but showed higher (and still increasing) yields at the end of the three-year test period, while the unpruned trees appeared to have reached their maximum production by the second year of the trial. The low fertilizer doses approved by the smallholders did not have a significant impact on the dry seed yield, and the management options that show benefits in the long term are generally not accepted or adopted by them. Cost-effective nutrient enhancement should be investigated, such as inoculation with arbuscular mycorrhizal fungi.

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