Soil test crop response based fertilizer prescription for marigold urd cropping system grown on mollisol of Uttarakhand
Loading...
Date
2018-07
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
Field experiments were conducted during the year 2013-14and 2014-15 in an Aquic Hapludoll at D7 block of Norman E. Borlogue Crop Research Centre of G.B. Pant University of Agriculture and Technology, Pantnagar (290 N latitude and 79029’ E longitude). To fulfill the objectives of the present investigation two experiments were conducted in the year 2013-14 and 2014-15. The first experiment was conducted as per the technical programme and Methodology of STCR and second experiment was conducted in the randomized block design to study the effect of balanced fertilization on growth, quality and yield of Marigold and Urd. In first phase fodder Sorghum (var. Pant Chari-7) was taken as an exhaust crop and in second phase i.e. next season test crop Marigold (var. Pusa Narangi) and Urd (pant Urd-31) was grown by dividing each strip in 24 plots having 21 treatments and 3 controlled plots. Response to selected combinations of three levels of FYM (0, 5 and 10 t ha-1), four levels of nitrogen (0, 60, 120 and 180 kg ha-1), four levels of Phosphorus (0, 30, 60 and 90 kgP2O5 ha-1) and four levels of potassium (0, 30, 60 and 90 kg K2O ha-1) for Marigold and three levels of FYM (0, 5 and 10 t/ha), four levels of nitrogen (0, 10, 20 and 30 kg/ha), four levels of phosphorus (0, 20, 40, 60kg/ha), four levels of potassium (0, 30, 60 and 90 kg K2O/ha) for Urd at different fertility levels was studied. Second experiment was conducted on randomized block design to study the effect of nutrient management on grain yield and fertilizer economics of Marigold-Urd cropping system. Organic carbon, Alkaline KMnO4-N, Olsen’s-P and NH4OAc-K values ranged between 0.22-0.75 percent, 112-178 kg/ha, 12.20-20.02kg/ha and 100.2-178.85 kg/ha respectively, after soil fertility gradient, while after harvest of marigold (before sowing of Urd) these ranged between 0.16-1.20 percent, 75.26-263.42 kg/ha, 10.60-67.03kg/ha, 60.48- 227.13 kg/ha respectively. The total flower yield ranged from and flower yield ranged from The nutrient requirement for production of one quintal flower yield was 1.06, 0.34 and 1.32kg for nitrogen, phosphorus and potassium respectively. While for Urd it was 3.18 kg for nitrogen, 0.63 for phosphorus and 2.54 for potassium respectively. Contribution of nitrogen, phosphorus and potassium from soil for marigold was 26.23, 54.03 and 42.02 and for Urd it was 38.15, 72.61 and 36.51 for nitrogen, phosphorus and potassium respectively. Contribution from fertilizer with FYM for marigold was 98.35, 40.25 and 168.68 and for Urd 187.65, 15.88 and 96.08 for nitrogen, phosphorus and potassium respectively. Percent contribution of nutrient from fertilizer without FYM for marigold was 83.25, 38.96 and 168.91respectively. Contribution of nutrient from FYM for marigold was 46.81, 61.30 and 128.4 % and similarly contribution of nutrient from FYM for Urd was 78.34,17.05 and 38.21 respectively. Fertilizer adjustment equations for targeted yield of Marigold and Urd were developed with and without FYM with the help of basic data. Coefficient of multiple regression (R2) was found to be highly significant (0.54**) in case of Urd and in case of marigold it was found to be (0.473**) between grain yield, soil test values, added fertilizers, and interaction between added soil and fertilizers. Verification trials was conducted to test the validity of fertilizer adjustment equations and fertilizer application based on targeted yield approach was found to be superior over general recommended dose (GRD). Among different methods, organic C, Mehlich-1 P and neutral normal ammonium acetate-K can be taken as indices for determining N, P and K in Mollisol of Uttarakhand. Treatment T10 and T6 was found to be as balanced fertilizer treatments in terms of growth, yield and quality of Urd. Treatment T9 and T5was found to be as balanced fertilizer treatments in terms of yield of marigold. Findings from present study can successfully be utilized for the larger parts of Tarai region of Uttarakhand as effective guide for efficient and balanced fertilizer recommendation.