{'fraction_non_alphanumeric': 0.0350609756097561, 'fraction_numerical': 0.009146341463414634, 'mean_word_length': 5.164319248826291, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Field determintation of young acid lime plants transpiration by the stem heat balance method

ABSTRACT: The stem heat balance method (HBM) measures sap flow (SF) in plants, and can be used toestimate daily transpiration flow. It is a powerful technique for water relations and irrigation field studies,but it has to be tested in species of particular interest. This paper discusses effectiveness of the HBM toestimate transpiration of young acid lime plants ( Citrus latifolia Tan. cv. Tahiti), grafted on citrumelo cv.Swingle ( Poncirus trifoliata Raf. x C. paradisi Macf.), in the field using commercial gauges (model SAG10-ws, Dynamax Inc., Huston), in Piracicaba, State of Sao Paulo, Brazil. SF was correlated to transpirationdetermined by weighing lysimeters and by a steady-state null-balance porometer. The mean ratio betweendaily values of SF and lysimetric measurements was practically unitary, showing a mean difference ofonly 0.05%, being the comparisons of values in periods shorter than 24 hours impaired by effect of windturbulence on lysimeters. The same occurred (mean difference of 0.38%) when SF and canopy transpirationestimated from porometer measurements were compared in 20-min periods, but transpiration tended toexceed SF in periods of higher transpiration and data dispersion was high (r