Effect of Grafting Height on Success and Subsequent Growth of Acid Lime (Citrus aurantifolia Swingle) Saplings

Abstract

A field experiment was conducted at National Citrus Research Program (NCRP), Paripatle, Dhankuta to determine the best grafting height for the highest success of grafting and the maximum growth of saplings during 1st January to 30th December, 2010. Scions were collected from the mother plant ‘NCRP-49’ grown under screen house and grafted onto one-year-old trifoliate orange seedling rootstocks by shoot-tip method at 4 cm, 8 cm, 12 cm, 16 cm and 20 cm height from the collar region as the treatment. The grafts were planted inside the closed tunnel made from bamboo splits, jute and plastic sheet at 10×8 cm spacing in 64×100 cm experimental plots laid out in randomized complete block design (RCBD) with four replications containing 80 grafts per plot. Treatments were allotted on the experimental plots randomly. The success of grafting was not affected by the height of grafting, however, growth of sapling was found significantly affected by the height of grafting. Observation taken on saplings after one year of grafting revealed that the maximum scion height (42.13 cm), the highest number of leaves per sapling (47.50), the highest growth of scion diameter (55.61%), maximum length of primary branches (31.19 cm), maximum number of secondary branches per sapling ((3.24), the highest length of secondary branches (11.59 cm), the highest canopy volume (15440 cm3) and the highest graft spread (24.35 cm) were found on the sapling grafted at 16 cm height of the trifoliate orange rootstock. Hence, from the study it is concluded that the most suitable height of grafting acid lime on trifoliate orange rootstock was 16 cm. DOI: http://dx.doi.org/10.3126/njst.v14i2.10412 Nepal Journal of Science and Technology Vol. 14, No. 2 (2013) 25-32

Response of Grafting Height on Growth Success of Acid Lime (Citrus aurantifolia Swingle) Saplings

“…However, at final observation of success at 180 days after grafting, the highest success (99.37%) was given by 16 cm grafting height followed by 20cm (99.06%) and the lowest (97.81%) by 8cm (Figure 1). Present finding was also supported by Poon [7] who reported 88.73%, Gautam et al [8] reported 87.5%, Chalise [9] reported 77.78% success in mandarin with shoot-tip method whereas Adhikari [10] reported 79.73% success in acid lime grafted onto trifoliate orange rootstock. The present result was higher than previous findings which may be due to more experienced grafters, more suitable temperature and humidity for callusing and more care of grafts after planting.…”

“…Darjeeling mandarin grafted onto rough lemon rootstock. Scion height of 21.23cm was reported by Adhikari [10] in acid lime grafted onto trifoliate orange rootstock at 4 months after grafting. Similarly, Chalise [9] reported 17.86cm height of mandarin at 6 months after grafting onto trifoliate orange rootstock.…”

Standardization of Grafting Time of Mandarin (Citrus reticulata Blanco) in Central Mid Hill of Nepal

“…The prepared scions were grafted onto trifoliate rootstock at 15 days intervals by side veneer method at 15 cm height from the collar region (Chalise et al, 2013b). A single smooth cut of 3 cm extending downward from the top of the stock was made at one-third of the diameter of the stock with a sharp grafting knife.…”

Grafting height does not affect Fusarium wilt control or horticultural performance of Passiflora gibertii N.E.Br. rootstock

“…Studies with passion fruit, in general, do not make inferences of the effect of grafting height on the horticultural performance and incidence of Fop, even though this influence is reported for other grafted crops and diseases (Prunier et al 1999, Sayler et al 2002, Chalise et al 2013, Yazdani et al 2016, Karlidag et al 2016. Nakasone and Paull (1998) report that higher grafting height of the purple passion fruit on the yellow one is associated to a decreased incidence of Fusarium wilt.…”