scholarly journals Influence of abiotic factors on the resistance of plants to insects

2019 ◽  
Vol 12 (1) ◽  
pp. 01-05 ◽  
Author(s):  
Ciro Pedro Guidotti Pinto ◽  
Sabrina Ongaratto

Abstract. Plant resistance is considered as an important pillar of Integrated Pest Management (IPM), being a highly targeted method since is a less harmful method to the environment, if compared to other tactics such as chemical control. Abiotic factors are those related to the environment and have a direct influence on the dynamics of interaction between insects and plants. The abiotic factors such as altitude, temperature, humidity, luminosity, wind and soil fertility, among others, do not act alone, but in a complex net that leads insect population dynamics in agroecosystems. How the variations of these factors can be studied in the same context? First, it is important to consider how each abiotic factors act separately and then in a coexistence influence over the populations dynamics of insects and plants. In this study, the literature about the influence of abiotic factors on insect herbivory has been reviewed, focusing mainly on the mechanisms in which the plants use in the defense against insects.Influência de fatores abióticos na resistência de plantas a insetos Resumo. A resistência de plantas é considerada um importante pilar no contexto do Manejo Integrado de Pragas (MIP), sendo um método bastante visado por ser menos nocivo ao meio ambiente, quando comparado a outras táticas como o controle químico. Os fatores abióticos são aqueles relacionados ao ambiente e têm influência direta na dinâmica de interação entre insetos e plantas. Os fatores abióticos como altitude, temperatura, umidade, luminosidade, ventos e fertilidade do solo, por exemplo, não atuam sozinhos, mais sim em um complexo de fatores coexistentes que regem as dinâmicas populacionais nos diversos agroecosistemas. Como as variações destes fatores podem ser estudadas em um mesmo contexto? Primeiramente, é importante conhecer como cada uma atua individualmente para então contextualizar em uma situação de coexistência sobre as dinâmicas populacionais de insetos e plantas. Neste artigo, a literatura sobre a influência de fatores abióticos na herbivoria de insetos foi revisada, focando principalmente nos mecanismos em que as plantas utilizam na defesa contra insetos.

2008 ◽  
Author(s):  
Paul Horne ◽  
Jessica Page

Integrated Pest Management for Crops and Pastures describes in straightforward language what is required for farmers to successfully implement Integrated Pest Management (IPM) in cropping and grazing operations. It explains the differences between conventional pesticide-based controls and IPM, and demonstrates the advantages of IPM. Effective control of pests depends on a number of approaches, not just chemical or genetic engineering. The opening chapters cover the different approaches to pest management, and the importance of identification and monitoring of pests and beneficials. Most farmers and advisors can identify major pests but would struggle to recognise a range of beneficial species. Without this information it is impossible to make appropriate decisions on which control methods to use, especially where pests are resistant to insecticides. The book goes on to deal with the control methods: biological, cultural and chemical. The biological control agents discussed include both native and introduced species that attack pests. Cultural changes that have led to an increase in the incidence or severity of pest attack are also examined. The chapter on chemical control describes the different ways chemicals can affect beneficial species, also detailing acute, sub-lethal and transient toxicities of pesticides, drawing on examples from horticulture where necessary. Finally, the authors bring all the components of integrated pest management together and show farmers how to put their IPM plan into action.


2018 ◽  
Vol 92 (4) ◽  
pp. 1359-1370 ◽  
Author(s):  
Peng Han ◽  
Nicolas Desneux ◽  
Christine Becker ◽  
Romain Larbat ◽  
Jacques Le Bot ◽  
...  

2017 ◽  
Vol 245 ◽  
pp. 128-140 ◽  
Author(s):  
Monique F. Mul ◽  
Johan W. van Riel ◽  
Lise Roy ◽  
Johan Zoons ◽  
Geert André ◽  
...  

Author(s):  
A. A. Motaphale ◽  
B. B. Bhosle

The investigation was carried out during kharif 2010-2011 and 2011-2012 in order to know the effect of different IPM module on insect pests of soybean. Significantly lower population of (2.54 larvae/ mrl) H.armigera, per cent pod damage (4.23%) by H.armigera were observed in MAU module. The minimum larval population of semilooper (3.62 larvae/mrl), S.litura (2.64 larvae/mrl) and per cent leaflet damage (6.71%) due to leaf miner, the minimum per cent defoliation (10.49%) due to defoliators were observed in chemical control followed by MAU module.


EDIS ◽  
2017 ◽  
Vol 2017 (1) ◽  
pp. 14
Author(s):  
Joseph E. Funderburk ◽  
Nicole Casuso ◽  
Norman C. Leppla ◽  
Michael Donahoe

  Insect and mite pests of cotton feed on cotton roots, leaves, stems, and fruit and reduce plant health and productivity, and, subsequently, cotton crop yields. These pests hide in different places on or within the plant or field, which makes them difficult to find and identify and costly to manage. The purpose of this 14-page guide written by Joseph Funderburk, Nicole Casuso, Norman Leppla, and Michael Donahoe and published by the Department of Entomology and Nematology is to provide Florida cotton growers a selected set of options for integrated pest management of insects and mites in cotton fields. It serves as a reference for cultural, mechanical, biological, and chemical control of arthropods. The guide includes links to additional UF/IFAS EDIS articles, as well as external sources of information on arthropod management. The guide also contains a searchable table of registered insecticides, herbicides, and fungicides for Florida cotton.­edis.ifas.ufl.edu/in1111


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