Efecto de sustratos acondicionados con bioabono sobre la morfologia de las raices y parte aerea del kiwi.

This investigation has a general objective to know the effect of conditioned substrate with "Bioabono" (Biofertilizer) on the morphology of the roots and aerial part of Kiwi (Actinidia deliciosa (Chevalier) Liang and Ferguson) cv. Hayward. The study was carried out at the greenhouse at the Facultad de Ciencias Agrarias y Forestales of Universidad de Chile. Plants coming from a nursery located in Buin were used, starting transplant in November 1990, with plants' bare roots. The doses of "Bioabono" were incorporated into the bucket of plantation in relation to their total volume, and according to the following treatments: Treatment 1/4: 1/4 of Bioabono; 3/4 soil. Treatment 1/2: 1/2 of Bioabono; 1/2 soil. Treatment 3/4: 3/4 of Bioabono; 1/4 soil. Control: without Bioabono. The following growth parameters were measured: number of leaves, length of the plant, foliar area and diameter of stems. Once the trial ended, a foliar analysis and a morphological study of roots was carried out. Apart from this, a chemical analysis of Bioabono used, and the analysis of aeration conditions, humidity retention capacity and fertility of the substrate was carried out. The doses of 1/4 favored the following parameters: number of leaves, length of plant, foliar area and dry weight of roots. The 1/2 doses only favored the diameter of stems. The morphoanatomy of the roots was favored by treatments 1/4 and 1/2, being the treatment 3/4 the one that determined the worst characteristic. The treatments with Bioabono presented more growth than the control. In spite of this, with two doses, 1/2 and especially 1/4, presented greater values than the parameters measured in treatment 3/4. Which would indicate that Bioabono applied, especially at doses of 1/4 at the moment of transplant, favors the initial aerial and root growth of Kiwi plants. The results indicate that the incorporation of Bioabono improved the physical properties of the substrate, which is reflected on a greater growth of plants.