Different types of substrates in the nursery phase, in Eucalyptus globulus, in Contumaza, Cajamarca, Peru

Abstract

Eucalyptus adapts easily to the climatic conditions in Peru. This research was carried out in the department of Cajamarca. The objective was to evaluate the influence of different types of substrates (in polyethylene bags, in the open air) in the quality of the seedlings. The design was completely randomized blocks with 15 treatments, four repetitions. The number of leaves, height, and stem base diameter (DBT) were evaluated for four months. The fresh and dry mass of the aerial and root parts were evaluated, as well as quality indicators: Dickson’s index, slenderness, aerial part-root part ratio, water balance of the plant and percentage of lignification. Analysis of variance was performed, and the Fisher LSD test. No treatment had the best results for all variables. Treatment L (50 % agricultural land + 50 % black soil) ranked first in number of leaves, aerial fresh weight, total dry weight and aerial dry weight. The G treatment (15 % hill sand + 50 % agricultural land + 35 % black soil) in DBT, root dry weight and Dickson index. There was a significant difference when using river or hill sand only in some cases. There was a high correlation between the number of leaves, and the height and with the fresh and dry total weights; root and aerial, and a high correlation between the height and the fresh and dry total weight; root and aerial, Dickson index and % of lignification.