“Optimization of nano-DAP fertilization for improvement in growth, yield and seed quality of finger millet (Eleusine coracana (L.) Gaertn.)”
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Date
2023
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College of Forestry, Ranichauri
Abstract
Title: “Optimization of nano-DAP fertilization for improvement in growth, yield and seed quality of finger millet (Eleusine coracana (L.) Gaertn.)”
The management of nutrients is crucial for increasing finger millet's yield. The overuse of fertilizers haveresulted in lower fertilizer efficiency due to leaching losses, volatilization and denitrification losses. The availability of phosphorus is lesser due to fixation of phosphorus at soil collides. In order to avoid or minimize such losses and fixation, seed treatment with foliar application of nano-DAP is one of the fastest ways to enhance crop growth. The current investigation was conducted in kharif 2022, with variety VL-352 at Research and Extension Centre, Gaja, College of Forestry, Ranichauri (Tehri Garhwal), Uttarakhand. The 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+ ST+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 Randomized Block Design (RBD) with three replications. The seed quality parameters of freshly harvested finger millet seeds were assessed for seed quality parameters in Complete Randomized Design (CRD) with three replications at laboratory of the Department of Seed Science and Technology, College of Forestry, Ranichauri.
The significantly higher plant growth parameters, yield attributing parametersand seed yield were recorded in T10- 50%P+100%N + 100%K + ST+FS (4ml)+FS(4ml) which was found to be statistically at par with T2- NPK 100% and significantly lower yield was recorded in T1- NK 100% (Control). The seed quality attributes like germination percentage, seedling length, seedling fresh and dry weight, vigour index, speed of germination, germination percentage under stress tolerance tests were recorded significantly higher in the treatment T10- 50%P+100%N + 100%K + ST+FS (4ml)+FS(4ml).
Based on the present investigation it can be concluded that 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.