Abstract

AVILAN, Luis et al. Evaluation of the form of glass and the sawed one of the branches in haden, tommy atkins, edward and kent, on the yields and the productive efficiency. cycles 2000 to the 2003. Agronomía Trop. [online]. 2007, vol.57, n.1, pp.51-59. ISSN 0002-192X.

In the National Center of Agricultural Research (INIACENIAP) a trial was carried out during 3 annual cycles of production (CP) between the years 2000 and 2003, in mango trees of Haden, Tommy Atkins, Edward and Kent cultivars, grafted in ´criollo´ and planted 6m apart (278 plantas ha^-1). The effect of the pyramidal truncated canopy (PT), rectangular canopy (R) and free growing canopy (T), with and without sawing (A) of the main branches was evaluated over the vegetative development and production periods. A complete randomized design was used in a factorial arrangement (4x3x2) where each plot was constituted by a tree, with four repetitions by cultivar. The results corresponding to the three CP revealed that with mayor removal of foliage for the configuration of the canopy (PT and R), there was a greater increase in canopy volume, with the reduction of fruit production. The use of A had an effect opposite as to what was expected, promoting vegetative development. The average yields (t ha^-1) for the three cycles considering a density of 278 plantas ha^-1 were 22,7 in PT; 18,3 in R and 31,3 in T, which exceeded in 163% (R) and 206% (PT) respectively, the 11, t ha^-1 that orchards of the same age (8 to 10 years) reach in the traditional system (69 plantas ha^-1). The productive efficiency of R occupied the first position.

Keywords : Mangifera indica L; canopy; sow; yield; productive efficiency.