Journal of Horticultural Sciences

M. S. Gawankar ¹, B. R. Salvi ¹, S. A. Chavan ¹, N. V. Dalvi ¹

Affiliations
1 Regional Fruit Research Station, Vengurle - 416 516, IN

Abstract

Research on ischolar_mainstock in mango is very limited in our country. Kalapady was reported to be a dwarfing ischolar_mainstock. Recent trend among mango growers is to high density orcharding with dwarfening nature of the varietie. Efforts were made at Agriculture Research Station, Mulde, to study comparative performance of Ratna, Alphonso and Kesar mango on Vellaikolamban and mixed ischolar_mainstock i.e., heterozygous seedling stock and the effect of ischolar_mainstock on a scion under high density of 5m x 5m spacing. Results indicated that use of Vellaikolamban ischolar_mainstock reduced plant volume in scion cv. Alphonso by 39.1%, followed by 24.9% in Ratna and 26.5% in cv. Kesar. As volume of the canopy was reduced, it directly influenced fruit yield cvs. Alphonso and Ratna. However, reduction in canopy volume had a positive influence on yield in cv. Kesar. Net returns of Rs.38,629/- per ha were maximum for Kesar with the ischolar_mainstock Vellaikolamban.

Keywords

Mango, Ratna, Alphosno, Kesar, Vellaikolamban, Mixed Rootstock, Polyembryonic, Dwarfing, Volume, Yield.

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N. V. Dalvi ¹, B. R. Salvi ¹, S. A. Chavan ¹, M. P. Kandalkar ¹

Affiliations
1 Regional Fruit Research Station, Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Vengurle - 416 516, IN

Abstract

A trial was conducted to optimize spacing for high density planting in mango cv. Alphonso to obtain higher yield/ unit area at the Agriculture Research Station, Mulde, during 2006-07 to 2008-09 with four close spacings and one normal spacing as control. Highest yield (6.4 MT/ha) was recorded with a spacing of 5 m x 5 m without reduction in fruit size in 10 year old plants compared to the mean yield of 1.12 MT/ha in 10m x 10m normal spacing. High density plantation helped to get significantly higher yield per unit area compared to the normal spacing, without affecting size and quality of mango fruits. The highest cost:benefit ratio (2.33) was recorded in high density plantation of 5m x 5m, with maximum net returns of Rs.1,12,000/- per hectare. The present findings show promise for more yield and returns per unit area during the initial years of mango plantation by adopting 5m x 5m high density planting.

Keywords

Mango, Alphonso, Spacing, High Density Planting.

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M. S. Gawankar ¹, R. D. Sawale ², S. N. Pawar ², S. A. Chavan ²

Affiliations
1 All India Coordinated Research Project on Cashew, IN
2 Regional Fruit Research Station, Vengurle - 416 516, IN

Abstract

A field trial was conducted at Regional Fruit Research Station, Vengurle, Dist. Sindhudurg, (Maharashtra) to assess the efficacy of Ethrel^® in relation to flowering behavior and yield enhancement in cashew on seven year old Cashew trees of Vengurle -7 variety during 2008-09. Three sprays of Ethrel^® @ 100 ppm, 200 ppm and 400 ppm along with water spray were given before flushing, after flushing and during fruit-set. Control consisted of no. spray. Among treatments, Ethrel^® @ 100 ppm significantly increased number of flowering panicles m^-2 (12.0), number of perfect flowers per panicle (52.8), fruit-set m^-2 (28.8), number of nuts per panicle (2.9) and yield tree^-1 ( 1.51 kg tree^-1) than control and water spray. Thus, lower concentration of Ethrel^® had a beneficial effect on cashew.

Keywords

Cashew, Ethrel^®, Foliar Spray, Sex Ratio, Nut Yield.

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