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Gibberellin Studies with Sugarcane. II. Hand‐sampled Field Trials 1
Author(s) -
Buren L. L.,
Moore P. H.,
Yamasaki Y.
Publication year - 1979
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1979.0011183x001900040001x
Subject(s) - biology , hybrid , gibberellic acid , gibberellin , sugar , cultivar , stalk , yield (engineering) , sucrose , tonne , horticulture , saccharum , field experiment , botany , mathematics , agronomy , food science , germination , chemistry , physics , organic chemistry , thermodynamics
Seven sugarcane ( Saceharum sp. hybrids), cultivars grown on 1,600 ha of the four sugarcane growing islands in Hawaii received 140 g/ha gibberellic acid (GA 3 ) in single or in two haft‐rate applications during the wnter of 1976. Stalks harvested 4 to 6 months after the last GA 3 application were divided into supposedly responding and non‐responding segments. Analyses of lengths and weights for each segment and for the sum of the three segments showed significant increases due to treatment. The effect of GA 3 was not limited to the “responding” segment, so that whole stalk data were necessary to calculate the response of yield to treatment. In addition to increasing weights, GA 3 treatments improved the sucrose content of juice. These gains resulted in a calculated yield improvement of 0.93 to 1.47 metric tons sugar/ha.