Growth and Economic Return of Quinoa (Chenopodium quinoa Willd.) under Different Plant Spacing and Fertility Conditions

Quinoa (Chenopodium quinoa Willd.) is a native of the Andes that has sparked a worldwide interest due to its unique nutritional value. Quinoa seed have an orthodox magnificent nutritional food quality and were also called “the mother grain”. To achieve optimal crop yield, farmers must meticulously manage various factors, ensuring a balanced approach to fertility levels, irrigation and pest control. It is crucial for farmers to find a delicate balance in achieving specific nutritional and yield targets. The current investigation was conducted in kharif 2022, with genotype “EC507742” at Research and Extension Centre, Gaja, College of Forestry, Ranichauri, Tehri Garhwal, Uttarakhand, India. The experiment comprised of two factors viz., geometry (S): S1- 20 x10 cm, S2- 30 x 10 cm and S3- 40 x 10 cm in main plot and fertility levels (F): F1- Control, F2- 75% NPKS, F3- 100% NPKS and F4- 125% NPKS in sub plot with total of 12 treatment combinations that were evaluated in split plot design with three replications. The data was analysed using OPSTAT with figures from SAS (proc glm). Among the geometries, S2 (30 x 10 cm) excelled in field conditions and economics relative to others. Among different fertility levels, F3 (100% NPKS) demonstrated the greatest growth, yield characteristics, yield, and higher returns for quinoa compared to other fertility levels. The interactions between geometry and fertility levels were also found significant for growth, yield attributes and yield with higher in S2F3. Thus, it can be concluded that using the recommended fertilizer (100% NPKS) with the ideal spacing of 30 x 10 cm improves growth, yield and profitability of Quinoa.