| Effects of fertilization and herbicides on growth of young loblolly pine and infestations of Nantucket pine tip moth（Lepidoptera： Tortricidae） |
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| 作者姓名： | WILLIAM G. ROSS DAVID L. KULHAVY JIANG-HUA SUN |
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| 作者单位： | [1]School of Forestry, Louisiana Tech University, Ruston, Louisiana [2]Arthur Temple College of Forestry and Agriculture, Stephen F. Austin State University, Nacogdoches, Texas, USA [3]State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China |
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| 基金项目： | Acknowledgments This project was supported by Mclntire Stennis funds. We thank the International Paper Company for use of a pine plantation; James Meeker and James Mitchell provided field assistance; DuPont Corporation provided the 0ust（r） and Velpar（r）-L; the Texas Forest Service provided herbicide application; and the Etoile Fire Department provided water for herbicide treatment. |
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| 摘 要： | A 2-year-old pine plantation was selected to receive treatments of fertilizers and herbicides to evaluate effects on Nantucket pine tip moth infestations and the tree growth parameters of height, diameter and volume increment. Nitrogen and phosphorus fertilizers, and hexazinone and sulfometuron methyl herbicides were used in creating six treatments： （i） control; （ii） phosphorus; （iii） nitrogen and phosphorus; （iv） phosphorus and herbicide; （v） nitrogen, phosphorus and herbicide; and （vi） herbicide. Treatments were applied in 1987 and 1988. In 1987, trees treated with nitrogen, phosphorus and herbicide had significantly greater height, diameter and volume growth than trees not receiving fertilizer treatments, but did not have significantly higher tip moth infestations than control trees. Treatments receiving phosphorus only had much lower tip moth infestation rates than other treatments except nitrogen and phosphorus. In 1988, tip moth infestations were uniformly low, with no differences in treatment effects observed.
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| 关 键 词： | 施肥方法 除草剂 火炬松 虫害 蛀虫 生长因子 |
| 收稿时间： | 2005-07-29 |
| 修稿时间： | 2005-07-29 |
Effects of fertilization and herbicides on growth of young loblolly pine and infestations of Nantucket pine tip moth (Lepidoptera: Tortricidae) |
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| Authors: | WILLIAM G ROSS DAVID L KULHAVY JIANG-HUA SUN |
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| Institution: | School of Forestry, Louisiana Tech University, Ruston, Louisiana, USA;, Arthur Temple College of Forestry and Agriculture, Stephen F. Austin State University, Nacogdoches, Texas, USA;, and State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China |
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| Abstract: | Abstract A 2‐year‐old pine plantation was selected to receive treatments of fertilizers and herbicides to evaluate effects on Nantucket pine tip moth infestations and the tree growth parameters of height, diameter and volume increment. Nitrogen and phosphorus fertilizers, and hexazinone and sulfometuron methyl herbicides were used in creating six treatments: (i) control; (ii) phosphorus; (iii) nitrogen and phosphorus; (iv) phosphorus and herbicide; (v) nitrogen, phosphorus and herbicide; and (vi) herbicide. Treatments were applied in 1987 and 1988. In 1987, trees treated with nitrogen, phosphorus and herbicide had significantly greater height, diameter and volume growth than trees not receiving fertilizer treatments, but did not have significantly higher tip moth infestations than control trees. Treatments receiving phosphorus only had much lower tip moth infestation rates than other treatments except nitrogen and phosphorus. In 1988, tip moth infestations were uniformly low, with no differences in treatment effects observed. |
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| Keywords: | fertilizers herbicides infestation rates Nantucket pine tip moth nitrogen phosphorus |
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