EFFECT OF DIFFERENT MEDIA COMBINATIONS ON ARIAL ROOT PRUNING TECHNIQUE BY ROOT TRAINERS AS ALTERNATIVE CONTAINERS TO POLYBAGS FOR PRODUCTION OF QUALITY PLANTING MATERIAL IN GRAPE ROOTSTOCKS

摘要

Evaluation of different media on root trainers as alternative to conventional propagation method polybags containing T1-Soil, Sand compost (2:1:1). Root trainers (600cc thickness and 25 cm length) were filled with different media viz. T2-Cocopeat + Perlite + Vermicompost, T3- Cocopeat+ Ricehusk + Vermicompost, T4 -cocofibre+Perlite+vermicompost T5-Cocofibre+ricehusk+vermicompost T6-Cocochips + perlite + vermicompost T7-cocochips+rice husk+ vermicompost@ 2:1:1. Among these various treatments copeat+perlite+ vermicompost performed very well and showed significant results, it took less no. of days (10 to 11 days), percent of sprout (95 %) it took less no. days to root (31 days), rooting percentage (95-96%/) no. of leaves (20.0) plant survival percentage at nursery (100%) it is followed by treatment Cocopeat + Ricehusk + vermicompost. Root trainers train the roots leads to development of healthy root system comprising of straight deep growing profuse roots. Root trainers can be used van be used as alternate to polybags and can be widely used to prevent formation of defects like spirals and root growth and it helps in significantly saving of cost of production and transportation. These can be reusable hence, environmental hazards associated with accumulation of polybags avoided in the field.