Assessment of nitrogen and potassium levels for growth, flowering and yield attributes in African marigold

Abstract

The investigation was carried out to assess the nitrogen and potassium levels for growth, flowering and yield attributes of African marigold at Horticulture Section, College of Agriculture, Nagpur, during kharif- 2018. The experiment was laid out in Factorial Randomized Block Design with sixteen treatment combinations which was replicated thrice. The treatments comprised two factors main -Nitrogen, 0, 80, 100 and 120 kg ha-1 and Potassium, 0, 20, 25 and 30 kg ha-1. The results revealed that growth parameters viz. plant height, number of branches plant-1 and yield parameters- number of flowers plant-1, yield of flowers plant-1 and ha-1 were significantly maximum. While minimum days were observed in flowering parameters such as, days to first flower bud initiation, days to opening of first flower, days to 50% flowering and days to first harvest in highest level of nitrogen (120 kg N ha-1) and potassium (30 kg K ha-1). However, interaction effect of nitrogen and potassium levels was found non-significant effect in case of growth and flowering parameters, while significant in yield parameters.