Resumen

AREVALO P, María Eugenia; OBERPAUR W, Christel  y  MENDEZ C, Cristian. Inclusion of moss (Sphagnum magellanicum Brid.) and coconut fiber as organic components for kiwi (Actinidia deliciosa). Idesia [online]. 2016, vol.34, n.2, pp.47-55.  Epub 03-Feb-2016. ISSN 0718-3429.  http://dx.doi.org/10.4067/S0718-34292016005000007.

Several components are commonly included in substrate mixtures, but usually they are not the most appropriated; some of them, due to their extraction, generate a negative environmental damage, as it's the case ofpeat. Searching for sustainable alternatives, the inclusion of Sphagnum magellanicum moss and coconutfiber as organic components ofsubstratum mixtures was evaluated in order to improve the nursery production of kiwi, propagated by seeds, in plugs. The considered components were Sphagnum moss (SM), coconutfiber (FC), composted pine bark ((CP) and sand (A),further peat (T) in different proportions. The trial was realized in Paine, Metropolitan Region, Chile, under greenhouse conditions. Sixteen mixtures were evaluated: T40% + CP40% + A20% (control), SM40% + FC40% + A20%, SM40% + T40% + A20%, SM40% + CP40% + A20%, FC40% + T40% + A20%, FC40% + CP40% + A 20%, SM80% + A 20%, FC 80% + A20%, T80% + A20%, CP80% + A 20%, SM33% + FC33% + A 33%, SM33% +T33%+ A 33%, SM33% + CP33% + A33%, FC33% + T33%+ A33%, FC33% + CP33% + A33%, T33% + CP33% + A33%. In all the substrata, kiwi seeds cv. Hayward were sawn in containerized plugs. The statistical design corresponded to complete randomized blocks, with four repetitions. Evaluated variables were: stem diameter, root and canopy dry weight. The experimental unit considered 22 plug container tubes of 120 cm³, each one with a single plant. The results indicate that the substrata composed by 80% of Sphagnum moss and 20% of sand, or 80% of coconut fiber and 20% of sand in comparison to the control substratum is appropriate for the production of kiwi seedlings and constitute an alternative as replacement to the use of peat.

Palabras clave : peat; composted pine bark; coconut fiber.

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