INTEGRAL MANAGEMENT OF PIERCING AND SUCKING INSECTS OF THE WATERMELON CROPS
With the aim of assessing different systems of the pest management in the crops of watermelon (Citrullus lanatus), an assay was carried out at the experimental station El Ejido, in Los Santos, Panama. Three types of treatments were evaluated; a conventional treatment without monitoring (CT), an integrated pest management with monitoring (IPM) and an untreated control. The analysis of variance showed a highly significant difference between the systems of IPM and CT related to untreated control (P<0,01). The population of Bemisia tabaci, Aphis gossypii and Thrips palmi in both the treatment was kept under the threshold established by this research during the critical stage of cultivation of watermelon crop. The population of A. gossypii colonized the crop 16 days after transplanting (DAT) and increased during the whole phonological cycle of the plant until reaching the average infestation of 26% and 30% during 41 and 51 DAT in the untreated control. The increase of the population of the predators such as Cycloneda sanguinea and the insects of the family Syrphidae were also observed, and the high correlation, r= 0,73 (P<0,01); r = 0,78 (P<0,01), existed with the increase of the level of the infestation of A. glossypii in the field. No significant difference in the yield existed between both the systems of CT and IPM. Nevertheless, the marginal return increased 363,6% in the system of IPM by reducing the applications of insecticides. Therefore, the practice of sampling and the early action are important for the program of the integrated management.
| Main Authors: | , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Instituto de Innovación Agropecuaria de Panamá
2016
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| Online Access: | http://www.revistacienciaagropecuaria.ac.pa/index.php/ciencia-agropecuaria/article/view/97 |
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