National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Field experiments were conducted on sandy loam soils in the field unit of Agronomy division, College of Agriculture, Shivamogga, Karnataka, India during Kharif season of 2015 and 2016. In this field trial, the effect of levels and methods of fertilizer application (surface and fertigation) with combination of water soluble fertilizers and normal fertilizers or alone on growth and yield of aerobic rice was studies. The experiment was laid out in a Randomized Complete Block Design (RCBD) comprising of 3 replications and 12 treatments. Results revealed that nutrient uptake pattern increased with age till harvest for all the major elements. Nitrogen accumulation was highest (78.05 to 119.17 kg ha-1) closely followed by potassium (74.58-98.22 kg ha-1) and phosphorus (14.80 to 20.35 kg ha-1). Application of 100 per cent RDF along with surface irrigation resulted to accumulate 53.77 kg N ha-1, 9.84 kg P ha-1 and 28.25 kg K ha-1 in grains. Compared to this, plots supplied with 100 (68.84 kg N ha-1, 11.87 kg P ha-1 and 31.20 kg K ha-1) or 125 (72.08 kg N ha-1, 12.81 kg P ha-1 and 32.53 kg K ha-1) per cent RDF through fertigation or conjunction of 25 per cent RDF through soil along with 75 (71.06 kg N ha-1, 12.44 kg P ha-1 and 31.73 kg K ha-1) or 100 (74.34 kg N ha-1, 13.55 kg P ha-1 and 33.66 kg K ha-1) per cent RDF through fertigation maintained higher uptake in grains. Further, these group of treatments performed best for achieving yield (60.95-68.92 q ha-1 grain) with higher water use efficiency (59.29 to 104.81 kg ha-cm-1) among the treatments tested.
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