Abstract
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.
Highlights
The Genus Viola belongs to the family Violaceae and contains about 500 species (Tamas, 1999)
Replacing 50% of the Shells Peanut compost has highest number of flowers (33.33 flower), fresh weight of canopy (35.18 g), dry weight of canopy (8.91 g), root length (11.17 cm), fresh weight of roots (10.83 g) and dry root weight (2.37 g) and replacing 100% of peanut shells compost was observed with maximum plant height (21.25 cm)
Replacing of Peanut Shells compost instead of peat – Perlite in growth media, led to improved in plant growth indices of Violet in comparing with control, all growth indices measured, using 50% of the Peanut shells compost had the greatest effect. It seems that Peanut Shells cellulose tissue and size of compost particle, creating high porosity caused to decrease in bulk density and caused by increasing of total porosity which these would improved growth indices in comparing with control
Summary
The Genus Viola belongs to the family Violaceae and contains about 500 species (Tamas, 1999). Intensive breeding programs that have selected forunique flower colors, large flower size, greater flower number, and temperature tolerance haveled to many new and exciting cultivars to select from for use in the landscape. Severe exploitation and overuse of peat may reduce the depth of the deep grasslands (70-160 cm). This causes loss of valuable vegetation, and by providing from adjacent water drainage will affect the vegetation of the area which not utilized. Possibility of rehabilitation of these lands (lands utilized by peat), to its original status or even close to it due to removal of the peat layer even in long term process, is beyond imagination.
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