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Effect of grafting season on success and growth of acid
lime in Rampur, Chitwan.
Adhikari A., D. D. Dhakal, K. Mishra and R. B. Thapa. 2007.
IAAS Research Advances Vol. 1. Institute of Agriculture and Animal Sciences, Rampur,
Chitwan,
Nepal. pp. 65-72.
Keywords:
Graft success, graft spread, canopy volume
A field experiment was conducted to find out the appropriate time of grafting of
acid lime onto Trifoliate orange in Randomized Complete Block Design (RCBD) with
four replications at Institute of Agriculture
and Animal Science, Rampur,
Chitwan during winter-summer season of 2006. The scions were taken from
Accession number 01 introduced to IAAS Farm from Madras, India.
Plants were splice grafted in five different dates at fifteen days interval
starting from 1st January. Each experimental unit included 37 grafted
plants. The success and survival of the grafts were highly influenced by season
of grafting. The highest graft success (79.73%) was found when grafted on 1st
and 16th January. The rate of success declined significantly then
after with delay in grafting time. The success was 66.89% when grafted on 31st
January followed by 15th February (56.76%) and the least on 3rd
March (35.81%). The number of leaves per plant (47), average plant height (33.01
cm), graft spread (17.71 cm) and canopy volume (5434 cm3) were the
highest in the plants grafted on 31st January. The canopy volume was
similar to that of plant grafted on 1st and 16th January.
The success rate in grafting was positively correlated with relative humidity
(RH) and negatively with the maximum temperature of the location.
Hence, appropriate time for grafting for maximum success was early part
of January while for vegetative growth of grafted saplings it was later part of
January under Rampur condition in Chitwan.
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