Herbicides for Release of Short-Leaf Pine and Native Grasses
- 1 April 1967
- Vol. 15 (2) , 104-+
- https://doi.org/10.2307/4041174
Abstract
Aerial herbicide treatments were made on a ntative stand of short-leaf pine (Pinus echinata Mill.) heavily infested with noncommercial oak (Quercus sp.), hickory (Carya sp.), and associated species in southeastern Oklahoma from 1957 through 1960. Two formulations of 2,4,5-tri-chlorophenoxyacetic acid (2,4,5-T) were applied in May and Sept. at 1 1/2 lb/A annually in 1, 2, and 3 applications with the later 2 made a year apart. The most diameter growth for all sizes of pine measured occurred following May treatments. Late May aerial ap-plications also were made with 2-(2,4-dichlorophenoxy) propionic acid (dichloroprop) and 2-(2,4,5-trichlorophenoxy) propionic acid (dichloro-prop) and 2-(2,4,5-trichlorophenoxy) propionic acid (silvex). Silvex reduced pine cone development, seed fill, and germination. Native grass growth was increased twice following good weed tree control. However, where dense short-leaf pine seedlings developed, the native grasses were smothered and volume of herbage decreased.This publication has 0 references indexed in Scilit: