Standardization of time and conditions for wedge grafting during spring season in guava (Psidium guajava L.) cv. Sardar
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Date
2022-09
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G.B. Pant University of Agriculture and Technology, Pantnagar, District Udham Singh Nagar, Uttarakhand. PIN - 263145
Abstract
The experiment entitled “Standardization of time and conditions for wedge grafting during spring season in guava (Psidium guajava L.) cv. Sardar” was conducted at Horticulture Research Centre of Govind Ballabh Pant University of Agriculture and Technology, Pantnagar (Uttarakhand) during the year 2021-2022. The experiment was laid out in two Factorial Randomized Block Design with 15 treatment combinations consisting of five dates of grafting T1 (second fortnight of January), T2 (first fortnight of February), T3 (second fortnight of February), T4 (first fortnight of March) and T5 (second fortnight of March), and three different growing condition C1 (polyhouse), C2 (shade net) and C3 (open condition). Each treatment was replicated thrice and thirty plants were taken under each replication. During the investigation, observations on different characteristics like first leaf emergence, percentage of scion sprouting, graft survival & mortality, height of shoot, diameter of graft, number of primary shoots, length of primary shoot, number of leaves per shoot, total number of leaves per graft, leaf size, leaf area, leaf area index were recorded in the grafts/plants grafted in different times and conditions by wedge method of grafting. The parameter like- plant height, diameter, number of shoots and number of leaves were also recorded exactly at 150 days after grafting. The experimental results on the basis of interaction effect between time and condition revealed that the wedge grafting performed in second fortnight of February under polyhouse condition (T3C1) has registered the higher values for almost all the parameters. However, the effect of wedge grafting performed during second fortnight of February to first fortnight of March under polyhouse, shade net and open condition were found statistically at par with respect to scion sprouting percentage, survival percentage, number of leaves per graft and leaf area index. Thus, keeping in view the involvement of low cost of production, the wedge grafting performed during second fortnight of February to first fortnight of March under open condition may be recommended for mass multiplication of guava plants. If the facilities of polyhouse and shade net are available with the nurserymen then the wedge grafting during second fortnight of February to first fortnight of March may also be adopted for commercial multiplication of plants with little bit higher success rate of grafts in comparison to open condition.