Effect of different levels of nitrogen and phosphorus on growth and seed yield of coriander (Coriandrum Sativum L.) cv. Ajmer coriander-1

The present investigation was carried out during Rabi season of 2015-2016 and 2016-17 at Horticultural Research Station, Bidhan Chandra Krishi Viswavidyalaya, Nadia, West Bengal, to determine the requirement of nitrogen and phosphorus for coriander variety Ajmer Coriander-1 for achieving maximum seed yield and quality parameter. Two different levels of nitrogen (40, and 60 kg/ha) and four different levels of phosphorus (30, 40, 50 and 60 kg P2O5/ ha) in different combination were distributed in the plots. The experiment was laid out in Factorial Randomized Block Design with 3 replications. The results indicated that yield parameters were declined with very high rate of nitrogen and phosphorous combination. Therefore, significantly maximum number of umbels per plant (66.30), umbellate per umbel (7.67), seeds per umbel (26.50), and seed yield per hectare (795.85 kg/ha), was recorded with treatment N2P2 (60 kg Nitrogen/ha + 40 kg P2O5/ha. Therefore, The treatment combination of (N60 + P40 kg/ha) was observed to be the best and most profitable dose for coriander cultivation on new alluvial zone of West Bengal.