Mycorrhizae and Substrates in the Vegetative Propagation of Pine

Abstract

The effect of mycorrhizae with different substrates was evaluated on the production of (Pinus radiata D. Don.) plants in the nursery. The completely randomized experimental design (DCA) was used, with AxB factorial arrangement, with nine treatments and three repetitions, making a total of 27 experimental units (EU). Each EU had a population of 50 seedlings, making a total of 1350 in the experiment. Factor A were mycorrhizae with three levels (no mycorrhiza, native mycorrhiza, industrial mycorrhiza) and factor B were substrates, with three levels (peat + soil agricultural + sand, peat + sand + humus, mixture [peat + agricultural land + sand] + humus). The seedbed was carried out, and then after 45 days the seedlings (4-5 cm) were transplanted into 4"x7" black polyethylene bags. In native mycorrhizae, mycorrhizal fungi (Boletus edulis) were used with surface soil from pine forest; and the industrial mycorrhizae used were commercial spores (Boletus edulis). After 120 days, 18 seedlings were taken from each EU and the percentage (%) of budding, seedling height, number of leaves, root length, number of roots and % of root dry matter were evaluated. It was determined that the combination of industrial mycorrhizae with the mixture [peat + agricultural land + sand] + humus achieved significant results (p<0.01) in % of attachment, seedling height, number of leaves, root length, number of roots and % dry matter of roots.