National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The present experiment was carried out at Horticulture Research Centre, Patharchatta, Department of Horticulture, GBPUA&T, Pantnagar, India under high density planting of guava cv. Pant Prabhat. The study was conducted to find out the interaction effect of pruning severity and plant spacing on growth, yield and profit. The treatments consisted of two plant spacing and seven pruning severity viz., One leaf pair shoot pruning (P1, OLP:);Two leaf pairs shoot pruning (P2, TLP); Three leaf pairs shoot pruning (P3, THLP); Thinning out of non-fruiting shoots + One leaf pair shoot pruning (P4, TNFS+OLP); Thinning out of non-fruiting shoots + Two leaf pairs shoot pruning (P5, TNFS+TLP); Thinning out of non-fruiting shoots + Three leaf pairs shoot pruning (P6, TNFS+THLP); Thinning out of non-fruiting shoots only (P7, TNFS) and no pruning (P0) as control. In this way there were eight treatments with sixteen combinations replicated four times each with two plants in one experimental unit. The annual increase in plant height, plant spread and plant volume were found maximum in unpruned plants (P0), while, the stem diameter was found maximum with treatment P4 (TNFS+OLP). The pruning severity had significantly decreased the per cent fruit set for rainy season crop and subsequently increased the per cent fruit set for winter season crop. The higher fruit yield was obtained with treatment P4 (TNFS+OLP) followed by treatment P1 (OLP). The unpruned plants (PO) produced lowest fruit yield in winter season. The highest benefit: cost ratio was calculated with the treatment P4 (TNFS+OLP) and 2.0 x 1.0 m plant spacing. Hence, for achieving higher winter season crop with maximum profit under high density plantation of guava, complete removal of non-fruiting shoots followed by one leaf pair shoot pruning of current seasons growth should be done during first week of May.
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