Effect of different doses of initial organic fertilization in the growth and development of Swietenia macrophylla King and Myroxylon balsamum (l.) Harms in the VRAEM, Peru

Abstract

The growth and development of Swietenia macrophyllaand Myroxylon balsamumat different doses of initial organic fertilization in the VRAEM, Cusco, were assessed. The statistical design was a RCBD with 4 repetitions and 10 treatments (T= 0 kg, T= 0 kg, T= 1231.5 kg, T= 1.5 kg, T= 3.0 kg, T= 3.0 kg, T= 4.5 kg, T= 4.5 kg, T= 6.0 kg y T= 6.0 kg). 4 5679 1011The seedlings were moved to the plot with an average height range of 20 to 30 cm. The results, at the moment of the assessment, did not show significant differences in height (m), diameter at ground level (cm) and dose of organic fertilizer in the two forest species. However, Tshowed the highest growth in height for S. macrophylla(2.1 m), compared with 7T(1.5 m) and T(1.3 m). In the case of M. balsamum, the greatest growth was obtained with 111T(1.0 m), and the lowest, with T(0.5 m). Regarding to survival percentage, the highest 102survival for S. macrophyllawas 97 %, with Tand T, and the lowest was 56 % with T. In the 3 57case of M. balsamum, the greatest survival was obtained with T(93 %), and the lowest survival (56 %) with T.