Tree pruning is an important tree management option for reducing shading effects and altering whole-tree water use in smallholder farming systems. In this study, sap flow meters (SFM1s) were used to monitor whole- tree water use in Cordia africana (Cordia), Albizia coriaria (Albizia) and Coffea arabica (coffee) trees in two farms in Eastern Uganda. Overstory trees were subjected to a 50% pruning regime at a 6-month interval over a period of 20 months (July 2018–February 2020). Analysis of variance General Linear Model was performed to assess the influence of tree species, management, season and their interaction on mean daily sap flow. Pairwise Pearson correlation coefficients between daily sap flow and leaf phenology were also obtained. Pruning altered the synchrony in the vegetative phenology of Albizia trees, as leaf cover changes occurred earlier in pruned trees than in unpruned trees. Pruned Cordia and Albizia trees respectively used 22.8% and 50.1% less water than unpruned trees whose average daily water use was 76.5L day1 and 133.7L day1 respectively. Episodes of reverse flows were observed in Albizia trees (pruned and unpruned) and the pruned Cordia during certain periods of the year. There was a statistically significant main effect of tree species, pruning, season and their interaction on daily tree water use (P<0.05). Coffee used 0.1 to 4.3 L of water per day over the 20-month period. While unshaded coffee used more water than shaded coffee, coffee growing under pruned trees used more water than coffee under unpruned trees. This could have resulted from more transpiration pull in coffee resulting from increased radiation with reduced shading. Subsequently, canopy pruning reduced the water demand of the tree component and resulted in recharge in the crop-rooting zone, although this seemed to appear later following consistent pruning. The study findings demonstrate that agroforestry tree canopy pruning can regulate water use in smallholder agroforestry systems, the benefits of other tree products notwithstanding.
Tag: coffee
TRADE Hub Indonesia
The Trade, Development, and the Environment Hub (TRADE Hub) adalah konsorsium penelitian global yang dipimpin oleh The UN Environment Programme World Conservation Monitoring Centre (UNEP-WCMC). Perdagangan berbagai komoditas pertanian dan satwa liar menjadi fokus penelitian di delapan negara dan melibatkan sekitar 50 organisasi mitra di dunia. Di Indonesia, TRADE Hub berfokus pada perdagangan minyak sawit, kopi, dan satwa liar. CIFOR-ICRAF menjadi koordinator kegiatan penelitian TRADE Hub di Indonesia. Bersama dengan tim mitra lainnya (Wildlife Conservation Society, Research Centre for Climate Change University of Indonesia, IPB University and Lampung University), dilakukan berbagai penelitian terkait perdagangan berkelanjutan.
The TRADE Hub Indonesia
The goal of the TRADE Hub in Indonesia is to make the global trade of palm oil and coffee deliver benefits for the country while reducing impacts to high-risk forested landscapes and their rural communities.
Atlas of Actor: Social network and power analysis in Indonesia’s palm oil, coffee, and wildlife trade
Beyond carbon sequestration – local knowledge about tree functions. Case study from male and female Arabica coffee farmers in Vietnam
Estimates of carbon sequestration for timber trees is well documented, while fruit trees are understudied. The few existing estimates indicate that fruit trees and fertiliser management on them, can substantially sequester carbon in coffee monocultures, albeit unlikely to the same extent as timber trees. A carbon investor may thus favour timber. In this light, as programs for planting billions and trillion trees are launched “to save the climate”, a wide range of gender, social, justice and environmental concerns are voiced.
Mapping gendered impact pathways of Fairtrade coffee: Case studies from Guatemala, Indonesia and Kenya
This research analyzes the contribution of Fairtrade to gendered value chain development through targeted interventions to improve women’s participation, social and economic empowerment, and transformation of gender norms which reproduce inequalities between male and female producers.