An investigation was carried out at Horticultural College and Research Institute, Venkataramannagudem, West Godavari district of Andhra Pradesh during the year 2015-16 to evaluate the influence of graded levels of nitrogen and potassium on physiological growth parameters and flower yield of garland chrysanthemum. The study has revealed that significantly highest number of leaves per plant (98.00), leaf area per plant (988.00 cm 2), LAI (0.618), LAD (268.04), CGR, AGR, RGR, NAR, Chlorophylla, b and total chlorophyll content were observed by application of nitrogen at the rate of 200 kg ha-1 in combination with potassium at the rate of 150 kg ha-1 along with phosphorus as a common dose to all the treatments at the rate of 100 kg ha-1 during Rabi season. Significantly highest number of flowers per plant (28.00), flower yield per plant (36.00 g) and flower yield per hectare (25.25q) were observed by application of nitrogen at the rate of 200 kg ha-1 in combination with potassium at the rate of 150 kg ha-1 .

The present experiment was carried out during 2021-22 in Central Horticulture Research Farm of Department of Horticulture, SHUATS, Prayagraj. The experiment was conducted in Randomized Block Design with 10 treatment replicated thrice with an objective to find out best treatment for growth, yield, quality and B:C ratio. The treatments were T0 (Control), T1 (NPK (RDF) 15:5:20),T2 (Biocapsule 500ppm (Soil drenching)),T3 (NPK (RDF) 15:5:20 + Biocapsule 500ppm (Soil drenching)),T4 (NPK (RDF) + Foliar application of Zno (12%) and Feo (12%) Nano particles (NPs)),T5 (Biocapsule 500ppm (Soil drenching) + Foliar application of Zno (12%) and Feo(12%) Nano particles (NPs)),T6 (NPK (RDF) 15:5:20 + Biocapsule 500ppm (Soil drenching) + Foliar application of Zno (12%) and Feo (12%) Nano particles (NPs)),T7 (NPK (RDF) 15:5:20 + Biocapsule 250ppm (Soil drenching)),T8 (Biocapsule 250ppm (Soil drenching) + Foliar application of Zno (12%) and Feo (12%) Nano particles (NPs)),T9 (NPK (RDF) 15:5:20 + Biocapsule 250ppm (Soil drenching) + Foliar application of Zno (12%) and Feo (12%) Nano particles (NPs)). From our experiment it was concluded that the treatment T5 (Biocapsule 500ppm (Soil drenching) + Foliar application of ZnO (12%) and FeO (12%) Nano particles (NPs)) was found to be best in the terms of germination percentage, vegetative growth, yield parameters, quality parameters and economics with Benefit Cost ratio 2.67.

No abstract