Effect of Mineral, Organic, Biofertilizers and Humic Acid on Vegetative Growth and Fruit Yield Quality of Caraway Plants (Carum carvi L.)

Effects of different fertilizers types, i.e., mineral fertilizers (100 % as a control) or 30 % combined with organic fertilizers (farmyard manure at 20 or 30 m3/ fed), bio-fertilizer and foliar application of humic acid on vegetative growth, yield and some nutrient contents of Caraway plant (Carum carvi L.) were studied at the Experimental station of Faculty of Agriculture, El-Mansoura University during the two growing seasons of 2016 and 2017. The results indicated that the highest mean values of the vegetative growth and fruit yield parameters of caraway plant were significantly increased when plants received 30 % of the recommended mineral fertilizer combined with farmyard manure at 30 m3/ fed in the presence of bio-fertilizer and sprayed with humic acid as compared with control (NPK at 300, 200 and 50 kg/ fed, respectively). In addition; N, P andK percentage in herb and seeds recorded the highest values with the same previous treatment. While, the highest values of NO3-N concentration in herb and seeds was obtained with full recommended dose of mineral fertilization (control treatment).