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Future R&D Work Required

By Food and Agriculture Organization of the United Nations

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Book Id: WPLBN0000228525
Format Type: PDF eBook
File Size: 0.1 MB
Reproduction Date: Available via World Wide Web.

Title: Future R&D Work Required  
Author: Food and Agriculture Organization of the United Nations
Language: English
Subject: United Nations., Food and Agriculture Organization of the United Nations. FAO agriculture series, Agriculture
Collections: United Nations Food and Agriculture Organization Collection
Publication Date:
Publisher: Food and Agriculture Organization of the United Nations; Digitizer: Fao


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Agriculture Organization Of The United Nations, F. A. (n.d.). Future R&D Work Required. Retrieved from

Nutrition Reference Publication

Electronic reproduction.

Excerpt: There is wide variation in reported tree water use values. Transpiration rates depend on climatic conditions, type and age of tree species, size of plantation, density of tree plantations (spacing), soil moisture regime, etc. This makes it difficult to select accurate design criteria for biodrainage tree plantings. Reporting of tree water use values as multiple of Class A pan would take care of climatic variations, provided the pan conditions, including site maintenance, were maintained at appropriate design standards ... Density of tree plantings for biodrainage should aim at maximum evapotranspiration per unit area. As maximum water use is achieved at canopy closure, high-density plantings should be aimed for at establishment, followed by thinning to minimize competition for water and light. Sitespecific research is needed to develop management systems that optimize transpiration rates, biomass production and economic cost/returns.


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