A field experiment on effect of integrated nutrient management and Spacing on yield attributes of ajowan was conducted at College of Horticulture, Rajendranagar, Hyderabad during late kharif season of 2019-20. The experiment was laid out in a factorial randomized block design with 12 treatments, replicated thrice. The treatments include four Integrated nutrient management levels (INM1, INM2, INM3 and INM4) and three spacings (S1, S2 and S3). The results of present study demonstrated that significantly maximum number of days to 50% flowering (49.79), days to harvest from transplanting (109.56), more number of umbels per plant (226.24), umbellate per umbel (16.70), number of seeds per umbel (159.97) and seeds per umbellate (18.24) was recorded in T3(INM1+ S3). However, the test weight (1.66 g) and seed yield per plant (8.58 g) were found significant and also maximum with the application of T2 (INM1 + S2) while, minimum was noticed in T7 (INM3 + S1). Maximum seed yield per plot (1543.73 g/plant) and seed yield per hectare (2575.03 kg ha-1) were recorded in T1 (INM1+ S1) where as, T9 (INM3+ S3) recorded the minimum.

Umbel, Hectare, Umbellate, seed, spacing, test weight

It is clearly concluded that there is a good scope of increasing crop yields through the use of organic manures, bio-fertilizers with different NPK levels. It is extremely important for sustaining production and improving the fertility of soils. The present study indicated that crop grown with T3 (INM1+ S3) recorded more number of umbels per plant, number of umbellate per umbel, number of seeds per umbel, number of seeds per umbellate due to profuse branching and more number of secondary and primary branches. However, the highest seed yield per plot and per hectare was recorded in T1 (INM1+ S1) due to more population per unit area.

T. Srikanth, Veena Joshi and D. Lakshminarayana (2023). Studies on effect of integrated nutrient management and Spacing on yield of ajowan (Trachyspermum ammi L. Sprague) in Southern zone of Telangana. Biological Forum – An International Journal, 15(12): 64-68.