Effect of Autumn Applications of Potassium Gibberellate on Fruit Production of the Strawberry

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Abstract

IN the autumn of 1957 at New Brunswick, New Jersey, single-row, 30-ft. replicated plots of Sparkle strawberries were treated with 20 and 50 p.p.m. of potassium gibberellate. Three applications were made, with the first application applied on September 13. An additional variable was added by using both a 1-week and 2-week interval between spray applications. No effect was noted in the autumn of 1957 from these sprays except for an occasional inflorescence observed on the plots sprayed with 50 p.p.m. The next spring the sprayed plots had a heavier bloom early in the flowering period as compared with the unsprayed plots. The harvest records for 1958 showed that the treated plots produced about a 30 per cent larger volume of early fruit than the unsprayed checks, with no difference due to interval between spray applications. Due to rains and fruit rots during the latter part of the 1958 harvest season, total yield records were not recorded.

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SMITH, C. Effect of Autumn Applications of Potassium Gibberellate on Fruit Production of the Strawberry. Nature 187, 620 (1960) doi:10.1038/187620a0

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