Interference and threshold level of Sida rhombifolia on Chenopodium quinoa Willd. crop

IF 0.6 4区农林科学 Q4 AGRONOMY

Bioagro Pub Date : 2024-01-04 DOI:10.51372/bioagro361.1

L. Galon, Daniel Cristian Cavaletti, L. Brunetto, J. D. Munareto, Ignácio Aspiazu, A. Castamann

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Abstract

Studies on interference and economic threshold level (TL) of weeds on quinoa are scarce. Thus, the goal of this study is to determine the interference and the TL of Sida rhombifolia (arrowleaf sida) on quinoa varieties. The experiment was organized using a completely randomized design, with four replicates. The treatments were composed of quinoa varieties (Q 1303, Q 1331 and Q 1324) in competition, respectively, with ten densities of arrowleaf sida (0, 12, 16, 18, 128, 252, 432, 524, 584, and 756; 0, 24, 88, 104, 112, 124, 160, 164, 260 and 320; 0, 16, 72, 104, 116, 144, 156, 160, 228 and 304 plants m-2). The variables evaluated were: plant density, soil coverage, leaf area, dry mass of weed shoots; and the variables related to quinoa were: grain yield, control cost, price per bag and control efficiency. Quinoa variety Q 1303 showed greater competitive ability with arrowleaf sida than Q 1331 and Q 1324. The values of TL varied from 1.79 to 11.60 plants m-2 for the Q 1303 variety, which demonstrated higher competitiveness with arrowleaf sida, while the lowest TL values varied from 0.80 to 6.91 plants m-2 for Q 1234 and Q 1331 varieties, showing less competitiveness in presence of the competitor. The TL values decreased with the increases in grain yield, in the price of the quinoa bag, in the efficiency of weeding and in the reduction of the control cost of arrowleaf sida, justifying the adoption of weed control measures.

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Sida rhombifolia 对藜麦作物的干扰和阈值水平

有关杂草对藜麦的干扰和经济阈值（TL）的研究很少。因此，本研究的目的是确定箭叶穗状花序（Sida rhombifolia）对藜品种的干扰和临界值。实验采用完全随机设计，共设四个重复。处理由藜麦品种（Q 1303、Q 1331 和 Q 1324）组成，分别与十种密度的箭叶草竞争（0、12、16、18、128、252、432、524、584 和 756；0、24、88、104、112、124、160、164、260 和 320；0、16、72、104、116、144、156、160、228 和 304 株 m-2）。评估变量包括：植株密度、土壤覆盖率、叶面积、杂草嫩枝干重；与藜麦相关的变量包括：谷物产量、防治成本、每袋价格和防治效果。与 Q 1331 和 Q 1324 相比，藜品种 Q 1303 显示出更强的箭叶西达竞争能力。Q 1303 品种的 TL 值从 1.79 到 11.60 株 m-2 不等，表明其对箭叶飞燕草的竞争能力较强，而 Q 1234 和 Q 1331 品种的 TL 值最低，从 0.80 到 6.91 株 m-2 不等，表明其在竞争者面前的竞争力较弱。随着谷物产量、藜袋价格、除草效率和箭叶草控制成本的降低，TL 值也随之降低，这证明采取杂草控制措施是正确的。

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

Bioagro Agricultural and Biological Sciences-General Agricultural and Biological Sciences

CiteScore

1.40

自引率

37.50%

发文量

期刊介绍： Bioagro es una revista científica del Decanato de Agronomía de la Universidad Centroccidental “Lisandro Alvarado” (UCLA). Su periodicidad es cuatrimestral y se publica en los meses de enero, mayo y septiembre. Cada trabajo es revisado por al menos dos especialistas en el área, externos a la revista, de cuya opinión depende la aceptación definitiva. Se utiliza sistema de arbitraje doble ciego. La revista va dirigida, fundamental pero no exclusivamente, a profesionales y técnicos del área agrícola. Su objetivo es publicar trabajos científicos originales e inéditos en ciencias agrícolas que enfoquen aspectos de agronomía, botánica y propagación de plantas, entomología y zoología, suelos, fitopatología y protección vegetal, ingeniería agrícola, genética y mejoramiento de plantas, ecología, procesamiento de productos agrícolas, biotecnología y sociales. También pueden ser publicados artículos cortos en los que se presenten descubrimientos científicos, desarrollos tecnológicos y resultados de diagnósticos integrales, en la modalidad de Notas Técnicas. En Venezuela, se encuentra en las bibliotecas de todas las universidades e institutos de educación superior que ofrecen carreras agronómicas, así como de los entes oficiales de investigación agropecuaria. En el exterior, la revista llega a universidades y/o institutos de investigación agrícolas de todos los países de América Latina así como Estados Unidos, Canadá y España.