A field experiment was conducted at Department of Plantation, Spices, Medicinal and Aromatic Crops, College of Horticulture, RVSKVV, Mandsaur, (M.P.) during the Rabi season 2019-20 in RBD-Factorial with replicated three times. Result revealed that the maximum plant height (40.02, 108.17 and 193.65 cm) and dry weight (3.66, 15.88 and 107.96 g) were found in AF-2 and they were also maximum (42.81, 112.81 and 195.42 cm & 3.80, 17.88 and 109.59 g) when crop was sown on 20th October. Under the interaction too maximum (43.55, 115.48 and 198.03 cm & 3.93, 18.37 and108.66) in the treatment combination D1V2 (20th October + V2-AF-2) at 60, 90, 120 DAS and at harvest, respectively. In the yield and yield attributes, the primary (3.20), secondary (14.01) and tertiary (12.01) umbels and umbelletes per primary (37.74), secondary (29.90) and tertiary (13.24) umbels, umbel dry weight (8.59), test weight (8.41), seed yield (17.43), straw yield (27.00) and harvest index (36.74) had maximum in AF-2 and they were maximum (3.45, 14.41, 12.65, 39.37, 31.03, 13.54, 9.19, 8.65, 18.50, 28.96 and 37.91) respectively when fennel crop was sown on 20th October. Under the interaction of different treatment they were also obtained maximum (3.51, 14.97, 12.78, 36.69, 31.14, 13.93, 39.83, 9.83,8.77, 19.25, 29.81 and 39.06) respectively in the treatment combination D1V2 (20th October + V2-AF-2). The highest chlorophyll in leaves at 60 (1.43) & 90 (1.54) DAS and volatile oil in seed (1.23) had in fennel variety AF-2. However, Crop sown on 20th October they were also maximum (1.67, 1.79 & 1.36) at 60 & 90 DAS and volatile oil in seed respectively. Among the different infections 20th October + AF-2 had maximum chlorophyll at 60 (1.70) & 90 (1.81) DAS and volatile oil in seed (1.37) over other combinations.
