Multiple trinexapac-ethyl applications reduce kentucky bluegrass sod storage temperatures

N. L. Heckman, R. E. Gaussoin, G. L. Horst

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

Sod heating during storage can limit the distance sod may be shipped. Two experiments were conducted to determine the effect of multiple preharvest applications of trinexapac-ethyl [4-cyclopropyl-α-hydroxy-methylene)-3,5 dioxocyclohexanecarboxylic acid methyl ester] at 0.23 kg·ha-1 (0.21 lb/acre) on kentucky bluegrass (Poa pratensis) sod temperatures during the first 24 h of storage. Experimental design was completely randomized with three replications and a 2 (trinexapac-ethyl verses control) × 3 (8-h storage intervals) factorial arrangement of treatments. Trinexapac-ethyl treatments were applied 6 and 2 weeks before harvest in the first experiment and 10, 6, and 2 weeks before harvest in the second experiment. Two and three applications of trinexapac-ethyl reduced sod storage temperatures. The reduction in rate of heating in treated sod became significantly different than untreated sod within 4 h after harvest. Mean sod temperatures in both experiments were 3 °C (6 °F) cooler in treated sod after 12 h of storage than untreated sod. These results suggest that trinexapac-ethyl could be used by sod growers to extend storage times and increase shipping and market areas. A multiple application program can enable sod growers to maximize the enhancement effects of trinexapac-ethyl on sod storage life.

Original languageEnglish (US)
Pages (from-to)595-598
Number of pages4
JournalHortTechnology
Volume11
Issue number4
DOIs
StatePublished - 2001

Keywords

  • Plant growth regulators
  • Poa pratensis
  • Sod heating
  • Stress tolerance

ASJC Scopus subject areas

  • Horticulture

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