Vol. 14, Issue 12 (2025)

Author(s):
Ashok LB, Ananda Sajjan, Raveesh S, Niranjana KS and Kiran Kumar N

Abstract:
The poly house experiment was carried out at College of Horticulture, Hiriyur Karnataka during 2020, to study the Influence of levels of fertigation on nutrient uptake and soil nutrient status of tomato The experiment was laid out in randomized block design with seven treatments and three replications. The soil of experimental site was clay loam in texture, alkaline in pH, medium in Organic matter and phosphorous. Low in available nitrogen and medium in available potassium. The effects of levels of fertigation and soil application on nutrients viz., N, P, K, Ca and Mg, content of tomato plant were found to be statistically significant. The nutrient content in tomato plant were measured at different growth stages like vegetative, flowering and fruiting stages. The soil application 100:100:100 kg NPK per acre (T₁) increased the nutrient content followed by the soil application of 40:40:40 kg NPK per acre along with 4 kg 19:19:19 per acre through fertigation. There was an increase in nutrient content at different growth stages. This is mainly due the fact that as the growth of plant increases the nutrient uptake is also increased. Uptake increased with the increasing fertilizer doses and this may be due to improved absorption and utilization of nutrients at higher rates of application. Among the different treatment received soil application of 100:100:100 kg NPK per acre (T₁) decreased OC of soil after harvest of crop. The treatment received the soil application of 100:100:100 kg NPK per acre (T₁) decreased N, P & K content of soil at flowering and harvest stage compared to other fertigation treatments. The soil application of 100:100:100 kg NPK per acre (T₁) decreased Ca, Mg & S content soil at harvest stage. This might be due to the more uptake and utilization of nutrients by for its growth and development, due to more uptake it was recorded less nutrient content compared to fertigation.