Optimization of Nano-DAP Fertilization for Improvement in Growth and Yield of Finger Millet (Eleusine coracana (L.) Gaertn.)
Vaishnavi Khati
VCSG Uttarakhand University of Horticulture and Forestry, College of Forestry, Ranichauri (Tehri Garhwal), 249199, Uttarakhand, India.
Ajay Kumar *
VCSG Uttarakhand University of Horticulture and Forestry, College of Forestry, Ranichauri (Tehri Garhwal), 249199, Uttarakhand, India.
Amit Kishore
VCSG Uttarakhand University of Horticulture and Forestry, College of Forestry, Ranichauri (Tehri Garhwal), 249199, Uttarakhand, India.
Arunima Paliwal
VCSG Uttarakhand University of Horticulture and Forestry, College of Forestry, Ranichauri (Tehri Garhwal), 249199, Uttarakhand, India.
Pratiksha Raj
VCSG Uttarakhand University of Horticulture and Forestry, College of Forestry, Ranichauri (Tehri Garhwal), 249199, Uttarakhand, India.
Anchal Rawat
VCSG Uttarakhand University of Horticulture and Forestry, College of Forestry, Ranichauri (Tehri Garhwal), 249199, Uttarakhand, India.
Aditya Raj Bisht
VCSG Uttarakhand University of Horticulture and Forestry, College of Forestry, Ranichauri (Tehri Garhwal), 249199, Uttarakhand, India.
Pankaj Kumar
VCSG Uttarakhand University of Horticulture and Forestry, College of Forestry, Ranichauri (Tehri Garhwal), 249199, Uttarakhand, India.
*Author to whom correspondence should be addressed.
Abstract
Aim: Optimization of nano-DAP fertilization for improvement in growth, yield and to maximize the production of finger millet.
Study Design: Randomized Block Design (RBD).
Place and Duration of Study: This investigation was conducted in Kharif 2021 and 2022, with variety VL-352 at the Research and Extension Centre, Gaja, College of Forestry, Ranichauri (Tehri Garhwal), Uttarakhand, India.
Methodology: This experiment comprised of ten treatments viz., T1- NK 100% (Control), T2- NPK 100%, T3- 75%P + 100%N + 100%K, T4- 50%P + 100%N + 100%K, T5- 75%P + 100%N + 100%K + Seed Treatment (ST) + Foliar Spray (FS) (2mL), T6- 75%P + 100%N + 100%K + ST + FS(4mL), T7- 50%P + 100%N + 100%K + ST + FS(2mL), T8- 50%P + 100%N + 100%K + ST + FS (4mL), T9- 50%P + 100%N + 100%K + ST + FS(2mL) + FS(2mL), T10- 50%P + 100%N + 100%K + ST + FS (4mL) + FS(4mL) and was laid out in RBD with three replications. Measurements and calculations of plant growth parameters, yield attributes, and economic considerations were made.
Result: The plant growth and yield attributing parameters were recorded significantly higher in the treatment T10- 50%P +100%N + 100%K + ST + FS (4mL) + FS(4mL) while significantly lower yield was recorded in T1- NK 100% (Control).
Conclusion: The use of 50% P through DAP and 100% NK along with seed treatment by nano DAP @5mL/kg seed as well as two foliar sprays of nano-DAP @4 mL/L of water, first at 30-35 days after germination and second at 45 days after seed germination gave significantly higher plant growth, seed yield and seed quality of finger millet.
Keywords: Volatilization, denitrification, leaching losses, soil collisions, randomized block design, foliar sprays, finger millet, nano-DAP