Judith Kobusinge, Joel Buyinza, Charles K. Twesigye, Godfrey H. Kagezi, Godfrey Sseremba, Geofrey Arinaitwe
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引用次数: 0
Abstract
Understanding the role played by agroforestry systems in improving water use efficiency (WUE) in coffee is a fundamental issue that could help promote sustainable agriculture. This study determined water use of Robusta coffee at various phenological stages under Albizia coriaria shade tree and open sun coffee systems. A randomized complete block design (RCBD) was set up in the two systems; A. coriaria coffee system (ACS) and Open sun coffee system (COSS) having three coffee clones. Water use by coffee and shade trees was measured using sap flow meters. In addition, days from inflorescence emergence to ripening and berry size from yellow berries to ripening were also measured. An ANOVA was used to ascertain differences in water use and berry growth duration. The results showed that Robusta coffee water use per phenological stage was clone and system dependent. COSS significantly (p < 0.001) used more water per day (1.43 l/day) compared to coffee under ACS (0.62 l/day), representing a 40% difference in daily water use between the two coffee systems. The fruit phenological stages under ACS required a longer duration (397.78 days) compared to COSS (350.94 days). A significant impact of the coffee system and clone on coffee water use was observed, potentially indicating reduced demand for water under A. coriaria compared to open sun coffee.
期刊介绍：
Agroforestry Systems is an international scientific journal that publishes results of novel, high impact original research, critical reviews and short communications on any aspect of agroforestry. The journal particularly encourages contributions that demonstrate the role of agroforestry in providing commodity as well non-commodity benefits such as ecosystem services. Papers dealing with both biophysical and socioeconomic aspects are welcome. These include results of investigations of a fundamental or applied nature dealing with integrated systems involving trees and crops and/or livestock. Manuscripts that are purely descriptive in nature or confirmatory in nature of well-established findings, and with limited international scope are discouraged. To be acceptable for publication, the information presented must be relevant to a context wider than the specific location where the study was undertaken, and provide new insight or make a significant contribution to the agroforestry knowledge base
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