Weed Vegetation Structure in an Area of Organic Acerola Cultivation, Parnaíba, Piauí, Brazil

IF 0.8 Q3 Agricultural and Biological Sciences

Planta Daninha Pub Date : 2020-01-01 DOI:10.1590/s0100-83582020380100019

P. Sousa, M.R.A. Mendes, A. Val, M. Teixeira

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引用次数: 2

Abstract

ABSTRACT: This study aimed to identify and quantify the weed species in an area of organic acerola cultivation in the Distrito de Irrigação dos Tabuleiros Litorâneos do Piauí (DITALPI) in Parnaíba, Piauí, Brazil. Phytosociological sampling was completed in the rainy season, before the farmers adopted management techniques for the plants. Thirty plots of 0.25 m2 were sampled. The plots were located between crop rows, which consisted of herbaceous-subshrub plants. The absolute and relative covers and the absolute and relative frequencies of each species were calculated based on the occurrence and cover of each species. In total, 25 species comprising 13 families were registered, among which the Poaceae family that presented the largest number of species. Commelina benghalensis occurred the most frequently overall. Shannon’s diversity index (H’) and evenness were calculated as 2.30 nats ind-1 and 0.69, respectively. Five species accounted for 79.33% of absolute cover at DITALPI. The species were distributed heterogeneously within the field, and Commelina benghalensis, Urochloa plantaginea, Panicum maximum, Amaranthus spinosus, Cynodonsp., and Cyperus aggregatus were the species most likely to infest the acerola crop. As DITALPI is an area of organic cultivation, understanding these species is essential to help farmers select the best form of control.

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有机针叶树种植区的杂草植被结构，Parnaíba, Piauí，巴西

摘要:本研究旨在对巴西Parnaíba、Piauí的灌溉区(DITALPI)有机针叶树种植区(DITALPI)杂草种类进行鉴定和量化。在农民采用植物管理技术之前，在雨季完成了植物社会学抽样。选取30块0.25 m2的样地。样地位于作物行间，以草本-亚灌木植物为主。根据各物种的发生和盖度计算各物种的绝对盖度和相对盖度以及绝对盖度和相对盖度。共登记到13科25种，其中以禾本科最多。总体上，本草发生频率最高。Shannon’s多样性指数(H’)为2.30 nats index -1，均匀度为0.69。5种占绝对盖度的79.33%。种属在田间分布呈非均匀性分布，主要有长尾草、车前草、大头草、苋属、金缕苋。和沙蚕是最容易侵染针叶作物的物种。由于DITALPI是一个有机种植区域，了解这些物种对于帮助农民选择最佳的控制方式至关重要。

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

Planta Daninha Agricultural and Biological Sciences-Plant Science

自引率

0.00%

发文量

审稿时长

16 weeks

期刊介绍： Planta Daninha is a scientific journal published by the Brazilian Society of Weed Science (SBCPD - Sociedade Brasileira da Ciência das Plantas Daninhas). Papers submitted for publication must be sent through an electronic system, on http://www.scielo.br/pd. Works may be written in Portuguese, English, or Spanish, and will be accepted after being reviewed and approved by the Editorial Board. Only papers that have not been published or submitted for publication in other media will be accepted. Articles in Portuguese will be translated to English after being properly corrected and authorized by the authors. Planta Daninha has with goal to publish genuine technical-scientific papers and literature reviews from a critical perspective on Biology, weed management, and related topics.