Strategies for the analysis of single-tree plot experiments in Eucalyptus plantations

• 作者: Heloisa Guimar?es Santos Flávia Maria Avelar Gon?alves José Luis Lima Aurélio Mendes Aguiar Gabriel Dehon Sampaio Pe?anha Rezende Bruno Marco de Lima Magno Antonio Patto Ramalho
• 来源期刊: 林业研究（英文版）
• 年，卷（期）: 2021,（6）
• 所属期刊栏目: ORIGINAL PAPERS
• 页码范围: 2437-2445
• 页数: 9页
• 语种: 英文

摘要

To verify if the response by Eucalyptus clones in a single-tree plot is influenced by neighboring plants and to determine the effect of missing and/or dominated plants,seven eucalyptus trials in four Brazilian states were analyzed in a randomized complete block design with one plant/plot and 30 replications.Mean annual increment(MAI,m3 ha-1 per year)was determined for three-year-old clones.The influence of neighboring clones was estimated by a linear regression coefficient between the MAI of each clone/plot and the average of a clonal MAI and its eight neighbors.To determine the effect of missing and/or dominated trees,a correction between the MAI and the area available/plant was applied.Subsequent analysis considered unadjusted and adjusted data for missing and dominated trees.Estimate of accuracy and index of coincidence were used to compare the adjustments.In single-tree plots,clone performances were not influenced by neighboring plants.Experimental accu-racy was not increased by any of the adjustments employed and the clone ranking was not altered,and therefore did not justify their use.