nerc.ac.uk

Water use in a sugarcane plantation

Cabral, Osvaldo M.R.; Rocha, Humberto R.; Gash, John H.; Ligo, Marcos A.V.; Tatsch, Jonatan D.; Freitas, Helber C.; Brasilio, Emília. 2012 Water use in a sugarcane plantation. Global Change Biology Bioenergy, 4 (5). 555-565. 10.1111/j.1757-1707.2011.01155.x

Before downloading, please read NORA policies.
[img]
Preview
Text
N020943PP.pdf - Accepted Version

Download (870kB) | Preview

Abstract/Summary

The evapotranspiration (E) from a sugarcane plantation in the southeast Brazil was measured by the eddy-covariance method during two consecutive cycles. These represented the second (393 days) and third year (374 days) re-growth (ratoon). The total E in the first cycle was 829 mm, accounting for 69% of rainfall, whereas in the second cycle, it was 690 mm, despite the total rainfall (1353 mm) being 13% greater. The ratio of E to available energy, the evaporative fraction, exhibited a smaller variation between the first and second cycles: 0.58 and 0.51, respectively. The estimated interception losses were 88 and 90 mm, respectively, accounting for approximately 7% of the total rainfall. The sugarcane yield in the second cycle (61.5 ± 4.0 t ha−1) was 26% lower than the first cycle, as well as lower than the regional average for the third ratoon (76 t ha−1). The below average yield was associated with less available soil water at the beginning of the cycle, with the amount of rainfall recorded during the first 120 days of re-growth in the second cycle being 16% of that recorded in the first (203 mm).

Item Type: Publication - Article
Digital Object Identifier (DOI): 10.1111/j.1757-1707.2011.01155.x
Programmes: CEH Topics & Objectives 2009 - 2012 > Water
CEH Sections: CEH fellows
ISSN: 1757-1693
Additional Information. Not used in RCUK Gateway to Research.: This document is the author’s final manuscript version of the journal article, incorporating any revisions agreed during the peer review process. Some differences between this and the publisher’s version remain. You are advised to consult the publisher’s version if you wish to cite from this article.
Additional Keywords: eddy covariance, evapotranspiration, rainfall interception, soil water deficit, sugarcane, yield
NORA Subject Terms: Ecology and Environment
Hydrology
Date made live: 17 Jan 2013 15:14 +0 (UTC)
URI: http://nora.nerc.ac.uk/id/eprint/20943

Actions (login required)

View Item View Item

Document Downloads

Downloads for past 30 days

Downloads per month over past year

More statistics for this item...