The two spotted spider mite, Tetranychus urticae Koch is one of the major arthropod-pest in the world. It is a cosmopolitan that has been attacking different botanical species, mainly cultivated and ornamental plants. The attack of making a decision on desiccation and leaf fall can lead to a death to the plants. The main method of controlling pressure is chemical control. However, this pest is already resistant...
The objective of this work was to identify homozygous F2:3 tomato families resistant to Ralstonia pseudosolanacearum and Ralstonia solanacearum. Two experiments were carried out under greenhouse conditions at the Federal Rural University of Pernambuco, one for each pathogen. We evaluated 45 treatments composed of Yoshimatsu (resistant) and IPA-7 (susceptible) and 43 families F2:3 obtained from generation F2. Ea...
As maiores perdas da agricultura são causadas em grande parte por pragas e doenças. A modernização da agricultura, após a segunda guerra, acrescentou, ao processo de produção de alimentos, a utilização de máquinas e equipamentos agrícolas, além de fertilizantes e pesticidas químicos, tornando o sistema altamente dependente de recursos (insumos agrícolas) externos às propriedades rurais. O uso freqüente e indisc...