GROWTH OF NEW ACACIA HYBRID VARIETIES (ACACIA MANGIUM X ACACIA AURICULIFORMIS) IN YIELD EVALUATION TRIALS IN THE NORTHEAST AND NORTH CENTRAL REGIONS

Abstract

This study evaluated growth of seven new acacia hybrid clones that have been recognized in Quy Nhon, Binh Dinh (BV586, BV375, BV055) and Cam Lo, Quang Tri (BV584. BV523, BV434, BV350) in yield evaluation trials at Yen The, Bac Giang and Bo Trach, Quang Binh to select high-yielding clones in these areas. The evaluation results showed clear differences in growth and stem quality indicators between clones in the trials at Yen The, Bac Giang and Bo Trach, Quang Binh. At Yen The, Bac Giang, four clones named BV584, BV586, BV376, BV434 were the best with MAI of 20.6 - 22.6 m³/ha/year, good stem quality, and no pests or diseases observed. At Bo Trach, Quang Binh, clone BV586 was the best with a yield of 24.2 m³/ha/year,good stem quality, and no pests or diseases incidence. The yield of these cultivars is superior to the trial mean and equivalent to the yield of commercial cultivars, BV10 and AH1.