Joatan Machado da Rosa

Andiroba oil (Carapa guianensis Aubl) in the capture of the fruit fly (Anastrepha fraterculus Wiedemann) in Feijoa (Acca sellowiana (Berg) Burret)

The fruit fly Anastrepha fraterculus is considered the main pest of fruit trees, including feijoa, Acca sellowiana, in the southern region of Brazil. The aim of this study was to evaluate the effect of Carapa guianensis on A. fraterculus. The research was carried out in a feijoa orchard in Lages, State of Santa Catarina, from December 2009 to December 2010. The experimental design was of randomized blocks with four repetitions. The treatments consisted of andiroba oil at 0.5, 1% and 2%, associated with 5% hydrolyzed protein (Bioanastrepha�), which was also used alone as control. Andiroba oil at 1% and 2% reduced the attractive potential of hydrolyzed protein; also, fewer females were captured in these two treatments.

Qualidade pós-colheita de frutos de tomateiro submetidos a preparados em altas diluições

Tomato fruits are sensitive to handling and its quality is determined by the crop system and the post-harvest conservation practices. The aim of this work was to evaluate the influence of high dilution preparations in the post-harvest attributes of tomato fruits. The research consisted of one field experiment in the 2009/2010 crop cycle and laboratory assay in post-harvest. The high dilution preparations studied under field conditions were nosodes of tomato plant and Solanum aculeatissimum at 12 and 24DH (decimal hahnemanian dilutions) and the homeopathies Arnica montana and Sulphur at 12 and 24DH. In the post-harvest treatments, Calcarea carbonica was evaluated at 6, 12, and 24CH (centesimal hahnemanian dilution) fruits being deaped into the respective treatment. The nosode of S. aculeatissimum at 12 and 24DH increased the total content of soluble solids (Brix degree) which attribute enhances the flavor and quality for industrialization. Calcarea carbonica treatment in post-harvest did not interfere on the chemical and physical attributes of tomato fruits, although Calcarea carbonica 24CH delayed the fruit softening.

Entomofauna associada à erva-de-touro (Poiretia latifolia Vogel) em povoamentos na região do Planalto Catarinense

Poiretia latifolia Vogel (Fabaceae), a native plant of the high-altitude field ecosystems appears to show promise, when introduced into the Atlantic Forest biome of southern Brazil. It is valued for its monoterpene-rich essential oil and exhibits great potential in the pharmaceutical and cosmetic industries. This work aimed at studying the entomofauna associated with P. latifolia , as well as assessing the effects of these insects on this plants reproductive success. The entomofauna were surveyed between December 2015 and January 2016, in two natural P. latifolia stands found in the Capao Alto and Sao Jose do Cerrito municipalities of Santa Catarina State. At each site, the entomofauna were subjected to 42-hour monitoring periods and five marked plants in each area were monitored every hour, from 9:00 am to 4:00 p.m. The effects of the climatic variables on the insect were analyzed using the Pearson correlation coefficient. To determine the damage due to herbivory, ten P. latifolia plants were marked at each site, from which the flowers and seeds were collected and the insect damage estimated. The predominant insects in both stands were identified as belonging to the orders Coleoptera, Diptera and Hymenoptera. The Dipteran insects revealed a significant positive correlation with the mean daily temperature (r = 0.84, p = 0.03442) in the Capao Alto stand. Damages caused by insects to the P. latifolia flowers and seeds were 54% and 88%, respectively, and were even higher in the Sao Jose do Cerrito area. Environmental changes precipitated by the intense agricultural usage in the vicinity of the P. latifolia stands may have been the reason for these differences.