Work

Influence of degree days on grape phenology, yield and quality of Manjari Naveen grapes grown under semi-arid conditions

Year: 2026

Type: article

Abstract: Grape (Vitis vinifera L.) is one of the most economically important fruit crops in India, with Maharashtra being a significant contributor to the country's grape production. Phenological studies play an important role in understanding grapevine growth and development and the time requirements to plan activities during the season to harvest quality grapes. The main purpose of this research was to evaluate the productivity and phenology of the Manjari Naveen grape variety in a semi-arid region using a double pruning and single cropping system. The study was conducted at ICAR-National Research Centre for Grapes over three years (2020-21, 2021-22 and 2022-23). The Manjari Naveen scions were grafted onto 'Dogridge' rootstocks and trained in the Y trellis system, with a spacing of 9×5 feet. The harvesting was done in 113 days during the 2020-21 fruiting season and the yield was 15.41 ton/ha. In the season 2021-22, the harvesting was done in 119 days and the yield was 17.98 tons/ha. While, during the fruiting season of 2022-23, it took 122 days to mature the grape berries and the yield was 13.28 tons/ha.

Source: International Journal of Horticulture and Food Science

DOI: 10.33545/26631067.2026.v8.i8a.838