Relative competition between white clover and weed species Silene gallica

IF 1.2 4区农林科学 Q2 AGRICULTURE, MULTIDISCIPLINARY

Bragantia Pub Date : 2021-01-01 DOI:10.1590/1678-4499.20200121

Dalvane Rockenbach, A. Balbinot, M. O. Bastiani, F. C. Caratti, D. Agostinetto, F. Lamego

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Abstract

: The aim of the present study was to assess the relative competition between white clover (cv. BRS URS Entrevero) and weed species Silene gallica L. through replacement series. The experiments followed a completely randomized design with four replications. The first study showed that the shoot dry mass of both species (white clover and S. gallica ) became constant with 16 plants.pot -1 or 400 plants.m -2 . In 2017, a study was conducted and it was repeated in 2018 in order to assess white clover competition with S. gallica under different crop:weed proportions pot -1 (100:00; 75:25; 50:50; 25:75 and 00:100). Competitiveness analysis was carried out through diagrams applied to replace experiments and through the relative competition indices. Morphological parameters such as plant height, leaf area and shoot dry mass of the crop and the weed were measured when S. gallica plants bloomed (105 days after species emergence). Results have proven the phenotypic plasticity of temperate-climate foragers such as white clover. This outcome shows that the competitive relationship with Silene gallica changes due to plant proportions composing the association. Therefore, it was possible to conclude that the species show similar competitive ability.

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白三叶草与高卢草的相对竞争

本研究的目的是评估白三叶草(cv。BRS、URS、Entrevero)和高卢草(Silene gallica L.)通过替换系列。实验采用完全随机设计，重复4次。第一项研究表明，白三叶草和高卢草两种植物的茎干质量在16株植物中趋于恒定。1盆或400盆。M -2。2017年进行了一项研究，并于2018年进行了重复研究，以评估不同作物下白三叶草与高卢花的竞争:杂草比例盆栽-1 (100:00;25;50:50;25:75和00:100)。运用图表代替实验，并通过相关竞争指标进行竞争力分析。在高利草开花时(种出后105 d)，测定了作物和杂草的株高、叶面积和茎干质量等形态参数。结果证明了白三叶等温带气候觅食动物的表型可塑性。这一结果表明，与高卢硅烯的竞争关系因组成该协会的植物比例而发生变化。因此，有可能得出结论，这两个物种表现出相似的竞争能力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Bragantia AGRICULTURE, MULTIDISCIPLINARY-

CiteScore

2.40

自引率

8.30%

发文量

审稿时长

4 weeks

期刊介绍： Bragantia é uma revista de ciências agronômicas editada pelo Instituto Agronômico da Agência Paulista de Tecnologia dos Agronegócios, da Secretaria de Agricultura e Abastecimento do Estado de São Paulo, com o objetivo de publicar trabalhos científicos originais que contribuam para o desenvolvimento das ciências agronômicas. A revista é publicada desde 1941, tornando-se semestral em 1984, quadrimestral em 2001 e trimestral em 2005. É filiada à Associação Brasileira de Editores Científicos (ABEC).