Population dynamics, vertical distribution and damage characterization of burrower bug in peanut

IF 2.6 3区农林科学 Q1 Agricultural and Biological Sciences

Scientia Agricola Pub Date : 2022-03-23 DOI:10.1590/1678-992x-2021-0161

M. D. Michelotto, D. Bolonhezi, R. S. Freitas, J. F. Santos, I. J. Godoy, C. Schwertner

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引用次数: 1

Abstract

: Although the burrower bug ( Cyrtomenus mirabilis ) is considered a vitalsoil pest in peanut crops, Arachis hypogaea L., in South America, there is little information on its occurrence and damage characterization. This study aimed to evaluate the vertical distribution and fluctuation of the burrower bug in the soil and the damage this species causes in peanuts. Two peanut cultivars (IAC OL3 and IAC 503) were evaluated in three locations in the state of São Paulo: Pindorama, Ribeirão Preto and Votuporanga, in the 2017/18 and 2018/19 harvests. Trenches were dug 0.5 m long, 0.3 m wide and 0.3 m deep, along plant lines at four spots on each sampling date, and stratified in layers 10 cm deep. Plant samples (0.5 m) were collected and evaluated for number of pods and percentage of kernels with symptoms of insect damage. More than 85 % of the C. mirabilis population was found in depths of up to 10 cm, especially after plant fructification, and an increase in nymphs from 100 days after sowing (DAS) was seen when an increased number of maturing pods was observed. The occurrence of nymphs and adults of C. mirabilis and their damage to peanut kernels was similar in both cultivars (IAC OL3 and IAC 503), when these were harvested according to their developmental cycles.

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花生螟虫种群动态、垂直分布及危害特征

虽然在南美洲，挖洞虫(Cyrtomenus mirabilis)被认为是花生作物arachhis hypogaea L.的重要土壤害虫，但关于其发生和危害特征的信息很少。本研究旨在评价地洞蝽在土壤中的垂直分布和消长及其对花生的危害。在2017/18和2018/19收获季，在圣保罗州的平多拉马、里贝贝普雷托和沃图波朗加三个地点对两种花生品种(IAC OL3和IAC 503)进行了评估。在每个采样日期的四个地点，沿着植物线挖掘0.5 m长，0.3 m宽，0.3 m深的沟槽，并在10 cm深的层中分层。收集植物样本(0.5 m)并评估有虫害症状的荚果数量和籽粒百分比。超过85%的褐飞虱种群分布在10cm深的地下，特别是在植物结实之后，从播种后100天开始，若虫数量增加，成熟荚果数量增加。在两个品种(IAC OL3和IAC 503)中，根据其发育周期进行采收时，mirabilis若虫和成虫的发生及其对花生籽粒的危害相似。

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

Scientia Agricola 农林科学-农业综合

CiteScore

5.10

自引率

3.80%

发文量

审稿时长

18-36 weeks

期刊介绍： Scientia Agricola is a journal of the University of São Paulo edited at the Luiz de Queiroz campus in Piracicaba, a city in São Paulo state, southeastern Brazil. Scientia Agricola publishes original articles which contribute to the advancement of the agricultural, environmental and biological sciences.