ORIGINAL ARTICLE
Biological control of Frankliniella occidentalis on greenhouse bell pepper using Beauveria bassiana in combination with soil cover practices
Mariana Del Pino 2, A-B,E-F
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1
Curso de Prácticas Profesionales I, Universidad Nacional Arturo Jauretche. 1888, Florencio Varela, Buenos Aires, Argentina
2
Curso de Horticultura y Floricultura, Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata. 1900, La Plata, Buenos Aires, Argentina
3
Centro de Investigaciones de Fitopatología (CIDEFI-CICBA), Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata. 1900, La Plata, Buenos Aires, Argentina
A - Research concept and design; B - Collection and/or assembly of data; C - Data analysis and interpretation; D - Writing the article; E - Critical revision of the article; F - Final approval of article
CORRESPONDING AUTHOR
Andrea Vanesa Toledo   

Centro de Investigaciones de Fitopatología (CIDEFI-CICBA), Facultad de Ciencias Agrarias y Forestales, Universidad Nacional de La Plata. 1900, La Plata, Buenos Aires, Avda. 60 y 119 s/n, 1900, La Plata, Argentina
Submission date: 2022-09-02
Acceptance date: 2022-10-03
Online publication date: 2022-10-13
 
 
HIGHLIGHTS
  • Beauveria bassiana CEP147 reduce thrips population on bell pepper crops.
  • B. bassiana in combination with inter-rows cover is the most effective treatment.
  • Fruit quality increase when B. basssiana and inter-rows cover are applied to the crop.
KEYWORDS
TOPICS
ABSTRACT
The excessive use of chemical products to control thrips and the tomato spotted wilt virus (TSWV) is not only harmful to human health, the environment, and biodiversity, but also the resistance these generate in insects turns them inefficient in the long run. Consequently, to achieve sustainable and residue-free production, control alternatives must be explored. This work proposes the use of Beauveria bassiana (BB) in combination with inter-row cover (IC) to reduce the population of thrips and the incidence of TSWV on bell pepper. For this purpose, a trial was carried out in a bell pepper greenhouse, consisting of four randomly distributed treatments with four repetitions of 66 plants each. The treatments assayed were: T (without BB inoculation or IC), TC (without BB inoculation and with IC), B (inoculated with BB), and BC (inoculated with BB and IC). The B. bassiana CEP147 strain was used based on its effectiveness in previous laboratory tests. After detecting one thrips per flower, five foliar spray applications were made at weekly intervals. The trial lasted 4 months. During this time, the number of thrips in the three central plants of each repetition, the presence of symptoms compatible with TSWV, as well as the number of fruits, and their weight, length, width and health were monitored weekly. Between the fourth and sixth weeks after the last application, a significant reduction in the population of total thrips (nymphs + adults) was observed in both treatments B and BC compared to T and TC. In addition, plants with symptoms compatible with TSWV were very scarce, and the fruits showed significant differences in their quality parameters, producing the longest and heaviest in the BC treatment. The results showed that combining biological and cultural control makes sustainable pepper production possible.
CONFLICT OF INTEREST
The authors have declared that no conflict of interests exist.
eISSN:1899-007X
ISSN:1427-4345