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首页> 美国政府科技报告 >Effects of Aerially Applied Glyphosate and Hexazinone on Hardwoods and Pines in a Loblolly Pine Plantation
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Effects of Aerially Applied Glyphosate and Hexazinone on Hardwoods and Pines in a Loblolly Pine Plantation

机译：空气中施用草甘膦和六嗪酮对火炬松人工林硬木和松树的影响

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Areas in a 4-year-old loblolly pine (Pinus taeda L.) plantation were treated with aerially applied Roundup (glyphosate), Pronone 10G (hexazinone), and Velpar L (hexazinone) plus Lo Drift (a spray additive). All herbicides were applied with appropriate helicopter-mounted equipment. The proportion of free-to-grow pine trees increased over a 2-year period in both the treated and untreated areas, but the increase was slightly greater in the treated areas. Final loblolly pine height, d.b.h., and volume per tree did not differ significantly among the four treatments. About 1,200 hardwood trees and 4,700 shrubs over 3 ft tall per acre were present at the beginning of the study.

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