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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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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

Int.J.Curr.Microbiol.App.Sci.2018.7(5): 3643-3654
DOI: https://doi.org/10.20546/ijcmas.2018.705.420


GIS Based Site Specific Major Nutrient Maps and Recommendations for Coconut (Cocus nucifera L.) Gardens
M. Dinesh Kumar1*, Binny Gopal1 and B.C. Dhananjaya2
1Department of Agronomy, College of Agriculture, University of Agricultural and Horticultural Sciences, Shivamogga- 577225, Karnataka, India
2Department of Soil Science and Agricultural Chemistry, College of Agriculture, University of Agricultural and Horticultural Sciences, Shivamogga- 577225, Karnataka, India
*Corresponding author
Abstract:

Spatial distribution of nitrogen, phosphorus and potassium were studied from 99 coconut farmers covering 195 acres representing different irrigation situations in Chikkapattanagere of Chikkamagaluru district, Doddaghatta of Davangere district, Siriyur of Shivamogga district and Madhure of Chitradurga district of Karnataka state, India. The gardens selected were aged 20-25 years with varying management levels. The Standard technique of grid method of sampling at 50x50 m spacing was employed to collect soil samples from selected study area at two depths (0-30 and 30-60 cm) with geographical identity by GPS. The soil samples were analyzed for major nutrients by following standard procedure. Across all locations, nitrogen status remained low while that of phosphorus shared medium to high status in equal proportion. Concerning potassium, 68 per cent of the topsoil had high status. Fertility mapping of each area was drawn using these data on GIS environment, Fertilizer recommendations based on soil test values for each grid is employed to calculate major nutrients required for fertilizer application. The comparison was made for package recommendation and the site specific recommendation. Rescheduling of major nutrients based on site specific variations of 0-30 cm emphasized slightly higher application (844 kg) of nitrogen and marginally less application of phosphorus and potassium. The study reveals the variations in the application of nutrients providing scope for re-allocation of these resources based on site specificity. Depending on site specific nutrient variations, nutrient application advisories were made for farmers in each location.


Keywords: Coconut, GIS, Grid, Fertilizers, Site specific, STV
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How to cite this article:

Dinesh Kumar, M., Binny Gopal and Dhananjaya, B.C. 2018. GIS Based Site Specific Major Nutrient Maps and Recommendations for Coconut (Cocus nucifera L.) Gardens.Int.J.Curr.Microbiol.App.Sci. 7(5): 3643-3654. doi: https://doi.org/10.20546/ijcmas.2018.705.420