Ecology, Environment and Conservation Paper

Vol 23, Sept. Suppl. Issue 2017; Page No.(100-103)

EFFECT OF DIFFERENT CONCENTRATION OF GROWTH REGULATORS AND ROOTING MEDIA ON ROOTING OF AIR LAYERING OF GUAVA (PSIDIUM GUAJAVA L.) CV. GWALIOR 27 UNDER GIRD REGION OF M.P.

Pratibha Jatav, A.K. Barholia, Arjun Kashyap, Kalyan Singh Raghuwanshi, Ankit Bauskar and Ajay Dangi

Abstract

Guava (Psidium guajava L.), is one of the most popular fruits grown in tropical, sub-tropical and some parts of arid regions of India The vegetative multiplication through cutting, grafting and layering are commonly practiced. Air layering is an easy method of propagation of this crop and it is widely used for commercial multiplication. Vegetative propagation is preferred to reproductive mode of multiplication due to easy maintenance of hereditary characters of the mother plant. Growth regulators have been used to increase the efficiency of propagation by layering. Many workers have studied these growth substances for vegetative propagation among which auxins like IBA and IAA have been found to be the most effective in rooting with varied percentage of success. Therefore, present experiment was undertaken in the Department of Horticulture, College of Agriculture, RVSKVV Gwalior, (M.P.) during the year 2014-15 to study the effect of different concentration of growth regulators and rooting media on rooting of air layering of guava (Psidium guajava L.) cv. Gwalior 27. The experiment was laid out in Randomized Block Design with three replications and 35 treatments combinations including. control, IAA and IBA both each at 10,000 and 15,000ppm and rooting media soil, soil + vermi compost, soil + cocopeat, soil + leaf mould, soil + vermi compost + cocopeat, soil + vermi compost + leaf mould and soil + cocopeat + leaf mould. The result revealed that the maximum number of primary and secondary roots, length and diameter of primary and secondary root was found in soil + cocopeat + leaf mould rooting media. In case of hormone and its concentration, the maximum number of primary and secondary roots , length and diameter of primary and secondary root was found in 15,000 ppm IBA.

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