STUDIES TO STANDARDIZE PROPAGATION TECHNIQUES IN AONLA (Emblica officinalis Gaertn
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Date
2004-06-29
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MAHATMA PHULE KRISHI VIDYAPEETH, RAHURI-413 722. DIST. AHMEDNAGAR, M.S., INDIA.
Abstract
The present investigation entitled, "Studies to standardize propagation techniques in aonla (Emblica officinalis Gaertn.)" was carried out at Instructional-cum-Research Orchard, Department of Horticulture, Mahatma Phule Krishi Vidyapeeth, Rahuri, during the year 2003-04. The experiment was laid out in actorial Completely Randomized Design (FCRD) with three replications. The patch budding and softwood grafting operations were carried out on three different varieties of aonla viz., NA-5, NA-7 and NA-10 on two different dates viz., 15 August and 15 September. The observations on number of days required for sprouting of buds/grafts, length of sprouted shoots, girth of scion/shoot, girth of rootstock at 30 days interval and final survival percentage of budded/grafted plants after 120 days were recorded from date of propagation. The number of days required for sprouting of buds/grafts from the date of ng/grafting were recorded to be significantly minimum (23.39) in NA-10 variety budded or grafted on 15th August than the other treatments. The softwood grafting recorded significantly maximum length of sprouted shoot at 30 (3.390 cm) and 60 (11.73 cm) days. The NA-10 variety recorded significantly maximum length of sprouted shoot at 90 (13.69 cm) and 120 (17.60 cm) days. The softwood grafting and propagation on 15th September recorded significantly maximum length of sprouted shoot at 90 .88 and 13.60 cm), and 120 (24.29 and 17.71 cm) days, respectively. The interaction effect of ftwood grafting done on 15th September recorded significantly maximum length of sprouted shoot (19.99 cm) at 90 days. Whereas the same method grafted on 15th August recorded significantly maximum length of sprouted shoot (24.83 cm) at 120 days. The softwood grafting and propagation on 15th August recorded significantly maximum girth of scion. The interaction effect between softwood grafting and 15 August showed significantly highest girth of scion i.e. 1.62, 1.65, 1.68 and 1.70 cm at 30, 60, 90 and 120 days, respectively. The final survival percentage of budded/grafted plants after 120 days recorded significant differences with method and season of propagation. The softwood grafting (63.72%) and 15th August (55.29%) recorded significantly maximum survival of budded/grafted plants. The combination of NA-10 variety budded/grafted on 15l August showed significantly maximum final survival percentage 58.57% of budded/grafted plants after 120 days. Amongst all types of interactions, the second order interaction of softwood grafting operated on 15 August on NA-10 variety was observed to be promising.
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