Critical period of weeds interference in pineapple (Ananas comosus [L.] Merr.) crops
Description of the subject. In crop-weed competition, some periods are critical because they may interfere with the crop production capacity. Therefore, knowing these periods is crucial when deciding on the best time for control and preparation of the Integrated Management Program. Objectives. To...
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doaj-072f230c862c46a1bb93b40f835043ee2021-05-26T12:13:02ZengPresses Agronomiques de GemblouxBiotechnologie, Agronomie, Société et Environnement1370-62331780-45072021-06-0125212012810.25518/1780-4507.18985 Critical period of weeds interference in pineapple (Ananas comosus [L.] Merr.) crops Silvana Pimentel de Oliveira0Jefferson Costa Santos1Bruna Nogueira Leite2Géssica Aline Nogueira dos Santos3José Ferreira da Silva4Federal University of Amazonas. Graduate Program in Tropical Agronomy. Laboratory of Weed Science. Av. General Rodrigo Octavio Jordão Ramos, 6200. Manaus - AM (Brazil). E-mail: silvanapimentel.oli@gmail.comFederal University of Amazonas. Graduate Program in Tropical Agronomy. Laboratory of Weed Science. Av. General Rodrigo Octavio Jordão Ramos, 6200. Manaus - AM (Brazil).Federal University of Amazonas. Graduate Program in Tropical Agronomy. Laboratory of Weed Science. Av. General Rodrigo Octavio Jordão Ramos, 6200. Manaus - AM (Brazil).Federal University of Amazonas. Graduate Program in Tropical Agronomy. Laboratory of Weed Science. Av. General Rodrigo Octavio Jordão Ramos, 6200. Manaus - AM (Brazil).Federal University of Amazonas. Department of Plant and Animal Production. Graduate Program in Tropical Agronomy. Laboratory of Weeds Science. Av. General Rodrigo Octavio Jordão Ramos, 6200. Manaus - AM (Brazil).Description of the subject. In crop-weed competition, some periods are critical because they may interfere with the crop production capacity. Therefore, knowing these periods is crucial when deciding on the best time for control and preparation of the Integrated Management Program. Objectives. To determine the Period Prior to Interference, Total Period for Interference Prevention, and the Critical Interference Period in pineapple cultivation. Method. The experimental design consisted of randomized blocks in 2 x 15 factorial arrangement, four replications, and two management systems: weeds control and crop-weeds coexistence; 15 increasing periods of 30 days each after planting: 0, 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, 360, 390, 420. In the control treatments, since planting, manual weeding (with hoe) and mechanical weeding (with brush cutter) were done during increasing periods of time, and in the coexistence treatments, the weeds lived together with pineapple plants and, at the end of each period, weeds control was made with mechanical and chemical weeding. Results. The best yields were achieved in the periods of less coexistence with weeds. The critical periods for interference prevention with 5 and 10% of yield losses were 259 and 204 days, respectively. Conclusions. The critical period for interference prevention lasted 14-259 days after planting of the pineapple offsets.https://popups.uliege.be/1780-4507/index.php?id=18985weed competitionproduction capacityweedingagroecosystemenvironmental sustainabilityamazon |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Silvana Pimentel de Oliveira Jefferson Costa Santos Bruna Nogueira Leite Géssica Aline Nogueira dos Santos José Ferreira da Silva |
spellingShingle |
Silvana Pimentel de Oliveira Jefferson Costa Santos Bruna Nogueira Leite Géssica Aline Nogueira dos Santos José Ferreira da Silva Critical period of weeds interference in pineapple (Ananas comosus [L.] Merr.) crops Biotechnologie, Agronomie, Société et Environnement weed competition production capacity weeding agroecosystem environmental sustainability amazon |
author_facet |
Silvana Pimentel de Oliveira Jefferson Costa Santos Bruna Nogueira Leite Géssica Aline Nogueira dos Santos José Ferreira da Silva |
author_sort |
Silvana Pimentel de Oliveira |
title |
Critical period of weeds interference in pineapple (Ananas comosus [L.] Merr.) crops |
title_short |
Critical period of weeds interference in pineapple (Ananas comosus [L.] Merr.) crops |
title_full |
Critical period of weeds interference in pineapple (Ananas comosus [L.] Merr.) crops |
title_fullStr |
Critical period of weeds interference in pineapple (Ananas comosus [L.] Merr.) crops |
title_full_unstemmed |
Critical period of weeds interference in pineapple (Ananas comosus [L.] Merr.) crops |
title_sort |
critical period of weeds interference in pineapple (ananas comosus [l.] merr.) crops |
publisher |
Presses Agronomiques de Gembloux |
series |
Biotechnologie, Agronomie, Société et Environnement |
issn |
1370-6233 1780-4507 |
publishDate |
2021-06-01 |
description |
Description of the subject. In crop-weed competition, some periods are critical because they may interfere with the crop production capacity. Therefore, knowing these periods is crucial when deciding on the best time for control and preparation of the Integrated Management Program.
Objectives. To determine the Period Prior to Interference, Total Period for Interference Prevention, and the Critical Interference Period in pineapple cultivation.
Method. The experimental design consisted of randomized blocks in 2 x 15 factorial arrangement, four replications, and two management systems: weeds control and crop-weeds coexistence; 15 increasing periods of 30 days each after planting: 0, 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, 360, 390, 420. In the control treatments, since planting, manual weeding (with hoe) and mechanical weeding (with brush cutter) were done during increasing periods of time, and in the coexistence treatments, the weeds lived together with pineapple plants and, at the end of each period, weeds control was made with mechanical and chemical weeding.
Results. The best yields were achieved in the periods of less coexistence with weeds. The critical periods for interference prevention with 5 and 10% of yield losses were 259 and 204 days, respectively.
Conclusions. The critical period for interference prevention lasted 14-259 days after planting of the pineapple offsets. |
topic |
weed competition production capacity weeding agroecosystem environmental sustainability amazon |
url |
https://popups.uliege.be/1780-4507/index.php?id=18985 |
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