Archives

International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 4
First page : (71) Last page : (76)
Article doi: : http://dx.doi.org/10.18782/2320-6678

Nutrient Expert and Soil Test Crop Response Assisted Site Specific Nutrient Management: An Alternative Precision Fertilization Technology for Direct Seeded Rice under Tungabhadra Irrigation Command

Shubha*, G.V., B. M. Chittapur and Veeresh, H.

Dept of Agronomy ,UAS Campus, Raichur,  Karnataka
*Corresponding Author E-mail: agshubha@gmail.com
Received: 30.06.2018  |  Revised: 27.07.2018   |  Accepted: 6.08.2018  

 

 ABSTRACT

A field experiment was conducted to study the Nutrient Expert (NW) and Soil Test Crop Response (STCR) assisted site specific nutrient management for precision fertilization in direct seeded rice (DSR) under Tunga Bhadra Irrigation command at Agricultural Research Station, Dhadesugur, University of agricultural Sciences, Raichur, Karnataka, India, during 2016 summer season. Nutrient Expert has been developed to provide simpler and faster crop advisory to use SSNM using existing site information. Soil testing helps the farmers to use fertilizers according to requirement of crop. Fertilizer use for targeted yield is an approach, which takes into account the crop needs and nutrients present in the soil. The experiment was laid out in a 2 x 3 x 2 factorial + 1control (RDF-150:75:75) Randomized complete block design with three replications. The first factor was nutritional  approaches involving NE and STCR, second factor was yield target (6 t, 7 t and 8 t ha-1) and the third factor was micronutrients and organics (ZnSO4 + FeSO4 + FYM 10 t ha-1) and control (no micronutrients or organics). Significantly higher rice grain yield was recorded with STCR (7385 kg ha-1) approach followed by NE (6737 kg ha-1) both having yield target of 8 t ha-1 and application of micronutrients + organics. Similarly, net returns were significantly higher with STCR approach (` 97786/- ) at 8 t ha-1 yield target  with the application of micronutrients and organics followed by Nutrient Expert approach at 8 t ha-1 yield target  without  application of micronutrients/organics (`96510/- and B:C - 3.74).  Thus, NE being comparable with STCR and user friendly makes it an ideal choice for nutrient management in DSR.

Key words: Direct Seeded Rice, STCR, Nutrient expert, Grain yield, Net returns, BC ratio

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Shubha, G.V., Chittapur, B.M. and Veeresh, H., Nutrient Expert and Soil Test Crop Response Assisted Site Specific Nutrient Management: An Alternative Precision Fertilization Technology for Direct Seeded Rice under Tungabhadra Irrigation Command, Int. J. Pure App. Biosci.6(4): 71-76 (2018). doi: http://dx.doi.org/10.18782/2320-7051.6678