用辐射计估算大豆杀菌剂处理试验的最佳小区面积

R. Michels, M. G. Canteri, I. Fonseca, M. A. A. E. Silva, Janksyn Bertozzi, T. C. Bosco
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引用次数: 1

摘要

光谱遥感和近端传感器是管理植物与病原体关系的重要工具。在农业研究中缺乏实验计划和错误的可能性可能导致重复工作,从而增加财务费用和人力资源成本。为减少此类问题,确定最佳处理试验田面积是目前采用的方法之一。本研究的目的是根据修正最大曲率法和最大距离法,估计不同杀真菌量处理下大豆反射率的最佳小区面积。使用GreenSeeker®辐射计对大豆作物进行反射率读数,每次处理的基本单位为0.45 m²,面积为10行,长10 m。采用不同剂量的杀菌剂,形成亚洲大豆锈病的梯度。数据采集分两个物候阶段(R5.5和R6),每个阶段模拟实验区300个。根据结果,建议使用5.40 m²的地块,每组三行,长4 m。
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Estimating optimum plot size with radiometer for experiments on soybeans treated with fungicide
ABSTRACT Spectral remote sensing and proximal sensors are important tools for managing the plant-pathogen relationship. The lack of experimental planning and the probability of error in agricultural studies may result in work repetition and, consequently, in financial expenses and costs with human resources. To reduce such problems, determining the optimum size of the experimental plot for treatments is one of the adopted methods. The objective of this study was to estimate the optimum plot size for reflectance in soybeans that were treated with different fungicide levels according to the methods of modified maximum curvature and maximum distance. Reflectance readings were carried out for the soybean crop with a radiometer GreenSeeker®, considering basic units of 0.45 m² in an area of ten rows, 10 m long, for each treatment. Treatments were applied to create a gradient of Asian soybean rust, varying the number of fungicide applications. Data were collected in two phenological stages (R5.5 and R6), obtaining 300 simulations of experimental area for each stage. Based on the results, the use of 5.40 m² plots with a group of three rows, 4 m long, is recommended.
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来源期刊
Summa Phytopathologica
Summa Phytopathologica Agricultural and Biological Sciences-Plant Science
CiteScore
0.90
自引率
0.00%
发文量
13
期刊介绍: The Summa Phytopathologica is a publication of the São Paulo State Plant Pathology Association (APF), Botucatu SP. Summa Phytopathologica (SP) is dedicated to publishing technical and scientific articles that describe original research in the area of Plant Pathology that may contribute significantly to its progress. SP accepts papers written in Portuguese, English, or Spanish. Its abbreviated title, Summa Phytopathol., should be used in bibliographies, footnotes and bibliographical references and strips.
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