Experimental plot size of passion fruit

Abstract The determination of the plot size is a practical matter pertinent to the experimental planning, and its optimal characterization allows to obtain higher precision and better quality in the results. Therefore, in this study, the main goal was to determine the plot size in experiments of passion fruit in two uniformity tests with Passiflora setacea and Passiflora alata. The experiment was constituted of a substrate at planting with 3 thirds of soil and 1 of barnyard manure. The soil was fertilizer with 3 kg of simple superphosphate and 0.5 kg of KCl by 1m³. Each species of Passiflora was considered a uniformity test with 40 basic units (BU). The evaluations of the experiments were done on 60 days after the transplant, noticing the tree’s height, stem’s diameter, number of leaves, number of buds, number of meristems and chlorophyll. Several plot sizes were simulated, in which each plant was first considered as a basic unit up to 40 plants per unit basic. For the estimation of optimum plot size, the maximum modified curvature method was used. The plot sizes varied with the specie, founding values as three to seven BU for Passiflora setacea and four BU to five for Passiflora alata.

摘要 试验小区面积的确定是与试验规划密切相关的实际问题，对其进行优化表征可使试验结果获得更高的精度与更优的质量。因此，本研究的核心目标是，针对西番莲属两种材料开展均匀性试验以确定其最优试验小区面积，供试材料分别为翅茎西番莲（Passiflora setacea）与甜西番莲（Passiflora alata）。本试验采用的种植基质为3份土壤与1份厩肥的混合物；每立方米土壤施入3 kg过磷酸钙（simple superphosphate）与0.5 kg氯化钾（KCl）作为基肥。供试的两种西番莲各设置一次均匀性试验，每个试验包含40个基本单元（basic unit, BU）。于移栽后60天开展试验调查，测定指标包括植株株高、茎粗、叶片数、芽数、分生组织数及叶绿素含量。本研究对多种试验小区面积进行模拟：以单株作为基本单元起始，逐步递增至每基本单元包含40株植株。采用修正最大曲率法估算最优试验小区面积。结果表明，最优试验小区面积因物种而异：翅茎西番莲的最优小区面积为3~7个基本单元，甜西番莲则为4~5个基本单元。