Application of Peanut Shells Composts in Replacement with Peat on Growth Indices and Physical and Chemical Properties of Violet Growth Media (Viola spp) in Outdoor

摘要

Peanut Shells as the waste left from peanut planting, which considerable amount of compost can be used as available resources to replace with peat in cultivation of Ornamental plant growth media. So, in this experiment, five treatments in a completely randomized design with three replications were conducted in outdoor in Lahijan ornamental plants Research Station. Treatments were included: 2 peat + 1 perlite + 0 Shells Peanut composts (control), 1.5 Peat + 1 perlite + 0.5 Shells peanut compost, 1 Peat + 1 perlite + 1 Shells Peanut composts, 0.5 Peat + 1 perlite + 1.5 peanut shells compost, 0 peat + 1 perlite + 2 peanut shells compost. In this experiment growth index of violets are included, number of flower, plant height, fresh and dry weight of canopy, root length, root fresh and dry weight, and physical and chemical properties of substrates were measured. The results showed that replacement of Shells Peanut compost has a significant effect on, number of flowers, plant height, Dry weight of canopy, root fresh and dry weight in comparison to control. Increasing levels of Peanut Shells compost caused to reduce in bulk density and an increase in total porosity, Water capacity and air fill porosity.