Eficiência do óleo de candeia (Eremanthus erythropapus (DC.) macleish.) na melhoria da resistência da madeira de sumaúma (Ceiba pentandra (L.) Gaertn.) ao cupim xilófago Nasutitermes corniger Motsch.

Abstract

Efficiency of candeia oil (Eremanthus erythropapus (DC.) macleish.) in improving the resistance of kapok wood (Ceiba pentandra (L.) Gaertn.) to the xylophagous termite Nasutitermes corniger Motsch. The objective of the research was to evaluate the efficiency of candeia oil (Eremanthus erythropappus (DC.) Macleish.) in improving the resistance of kapok wood (Ceiba pentandra (L.) Gaertn.) to the xylophagous termite Nasutitermes corniger Motsch. Specimens, with nominal dimensions of 0.7 x 2.0 x 2.5 cm (thickness, width and length), forged feeding test and 0.7 x 2.0 x 10.2 cm (thickness, width and length), food preference, made with kapok wood were treated by the cold immersion process to achieve retention classes of 10.00; 16.57; 21.71 and 26.86 kg of 6 oil/m3 (forged feed test) and 37.21; 58.22; 87.54 and 104.94 kg of oil/m3 (test of food preference) were subjected to the attack of the termite N. corniger, for 28 days (forged food) and for 20 days (food preference). It was found that candeia oil in the retentions of 10.00 kg/m3 (forged feeding test) and 37.21 kg/m3 (feed preference test), inhibited the termite attack and in the retentions of 16.57 kg /m3 (forged feeding test) and 58.22 kg/m3 (forged feeding test) food preference), prevented the attack on the tested wood, making it impossible for termites to have access to a food source.