PRELIMINARY EVALUATION OF COMPOSTED PISTACHIO HULL AND RICE HUSK AS POTTING MEDIUM ON SCINDAPSUS AUREUS VEGETATIVE AND PHYSIOLOGICAL CHARACTERISTICS IN GREENHOUSE CONDITION

Pistachio hull is a horticultural waste product obtained during dehulling process of pistachio nuts. This experiment was carried out to evaluate the effects of pistachio hull and rice husk compost, as culture medium, on vegetative and physiological characteristics of pothos (Scindapsus aureus) plants. Rooted cuttings were used as plant materials and cultured in pots (40 × 30cm) filled with the following media: S1 = 100% peat (control), S2 = 100% rice husk, S3 = 70% rice husk + 30% pistachio hull, S4 = 50% rice husk + 50% pistachio hull, S5 = 30% rice husk + 70% pistachio hull and S6 = 100% pistachio hull. The vegetative parameters were affected by media type, so that no plants survived in 100% pistachio hull. The application of 50% pistachio hull and 50% rice husk (S4), increased shoot fresh weight, and potassium (K) concentration of shoot and root compared to control. Fresh and dry root weight and phosphorus (P) concentration of shoot was increased with S2 treatment (100% rice husk).

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