| Autor: |
Rosado JF; Department of Entomology, Federal University of Viçosa, Viçosa, MG, 36570-900, Brazil., Sarmento RA, Pedro-Neto M, Galdino TV, Marques RV, Erasmo EA, Picanço MC |
| Jazyk: |
angličtina |
| Zdroj: |
Experimental & applied acarology [Exp Appl Acarol] 2014 Aug; Vol. 63 (4), pp. 521-34. Date of Electronic Publication: 2014 Mar 31. |
| DOI: |
10.1007/s10493-014-9804-0 |
| Abstrakt: |
The starting point for generating a pest control decision-making system is a conventional sampling plan. Because the mites Polyphagotarsonemus latus and Tetranychus bastosi are among the most important pests of the physic nut (Jatropha curcas), in the present study, we aimed to establish sampling plans for these mite species on physic nut. Mite densities were monitored in 12 physic nut crops. Based on the obtained results, sampling of P. latus and T. bastosi should be performed by assessing the number of mites per cm(2) in 160 samples using a handheld 20× magnifying glass. The optimal sampling region for T. bastosi is the abaxial surface of the 4th most apical leaf on the branch of the middle third of the canopy. On the abaxial surface, T. bastosi should then be observed on the side parts of the middle portion of the leaf, near its edge. As for P. latus, the optimal sampling region is the abaxial surface of the 4th most apical leaf on the branch of the apical third of the canopy on the abaxial surface. Polyphagotarsonemus latus should then be assessed on the side parts of the leaf's petiole insertion. Each sampling procedure requires 4 h and costs US$ 7.31. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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