Abstract

A Field study entitled "effect of pruning in different time intervals on growth and yield of button rose was carried out in a farmer's field near Hosur, Krishnagiri district during 2020-21. The expriement conducted in a factorial randomized block design with two factors and three replication. i.e., third week of oct,first week of nov,third week of nov and first week of dec by altering different heights 40 cm and 45cm. The following growth characters are plant height, plant spread, number of branches plant1, number of leaves plant1, leaf area, days to flower bud initiation, number of flower plant1, flower diameter, single flower weight, flower yield plant1, flower yield plot1, estimated yield kg ha1 were recorded at periodical intervals. The results revealed that S₃H₂ pruning 3^rd week of November  @ the height of 45cm consistently registered the maximum plant height (110.6), plant spread ( 43.3), number of laterals plant-1 (46.2), number of leaves per plant (180.3), leaf area (42.3) and Chlorophyll (1.55) when compared with treatments comprising growth regulator alone or nano-micronutrients alone. The flowering and yield parameters such as the number of flowers plant-1(482.3), days taken for first flowering (58.86) flower diameter (5.85), single flower weight (3.58), flower yield per plant (5.76 ) was also recorded as the highest in the above treatment. It was followed by S₃H₁ pruning in the 3^rd week of November @ the height of 40cm and S₂H₂ pruning in the 1^st week of November @ the height of 45cm which recorded nest best on-bar values in these parameters. By considering the yield parameters it can be concluded that
 S₃H₁ pruning in the 3^rd week of November @ the height of 45cm was found to have the best effect on growth, flowering and yield parameters of button rose cultivated in open field condition.