Effect of Size of Polybag on Survival and Growth of Mango Grafts

P M Haldankar,M M Kulkarni,Y R Parulekar,K E Lawande

doi:10.5539/jps.v3n1p91

Abstract

Mango is the most important fruit crop of India’s western coast. Mango is commercially propagated by epicotyl grafting. Presently, epicotyl grafts are prepared in 6” × 8” poly bags which restrict root growth and such grafts take longer time for establishment in the field and growth is reduced. Hence, experiment was conducted for optimizing the size of poly bag for cv. Alphonso and Kesar for vigorous growth of epicotyl grafts. The investigation was undertaken in Randomized Block Design with four treatments viz. T1-10” × 14” bags (Alphonso grafts), T2-10” × 14” bags (Kesar grafts), T3-6’’ × 8’’ bags (Alphonso grafts), T4-6’’ × 8’’ bags (Kesar grafts) replicated five times with a unit of 200 grafts per treatment per replication. The sprouting and survival percentage was not affected by size of bags. Among all the treatments, the larger size bags of T1 and T2 improved the vigour of grafts remarkably by producing longer tap root, greater root spread and more number of secondary roots with increased plant height, girth at collar, number of leaves per graft and plant spread over the small sized bags in treatment T3 and T4. The RGR recorded in T1 and T2 was better than that of T3 and T4.

Highlights

Mango is the most important fruit crop in India established on 22,97,000 ha in almost eleven states
The investigation was undertaken in Randomized Block Design with four treatments viz. to 61.50% (T1)-10” × 14” bags (Alphonso grafts), to 2.17 cm (T2)-10” × 14” bags (Kesar grafts), T3-6’’ × 8’’ bags (Alphonso grafts), to 4.50 cm (T4)-6’’ × 8’’ bags (Kesar grafts) replicated five times with a unit of 200 grafts per treatment per replication
The larger size bags of T1 and T2 improved the vigour of grafts remarkably by producing longer tap root, greater root spread and more number of secondary roots with increased plant height, girth at collar, number of leaves per graft and plant spread over the small sized bags in treatment T3 and T4

Summary

Introduction

Mango is the most important fruit crop in India established on 22,97,000 ha in almost eleven states. Moderate temperatures, high relative humidity, assured rainfall and lateritic to medium black soils These conditions are favorable for cultivation of Alphonso which is a choicest variety of mango. It is the earliest variety in the region and possess unique flavor which retains even after processing. Apart from Alphonso, Kesar variety is preferred for cultivation in konkan region This variety is famous for its specific flavor, sweet taste and uniform light yellow color. About 50,00,000 grafts are sold through public and private sector nurseries of konkan region These grafts are prepared in 6” × 8” poly bags having thickness of 200 gauge (Anonymous, 2013).

Methodology

Statistical Analysis

Results and Discussion

Conclusion