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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.2020.9(4): 3026-3032
DOI: https://doi.org/10.20546/ijcmas.2020.904.353


Development of Preliminary Leaf Nutrient Norms for Byadgi Chilli (Capsicum annuum L.) using DRIS Approach
M. Pushpalatha* and B. L. Bidari
Department of Soil Science and Agricultural Chemistry, College of Agriculture, University of Agricultural Sciences- Dharwad- 580005, India
*Corresponding author
Abstract:

A survey was conducted during 2017-18 to study the leaf nutrient norms using Diagnosis and Recommendation Integrated System (DRIS) for Byadgi chilli crop in three district of north Karnataka. A total of 175 locations were selected and index chilli leaf samples were collected at peak flowering stage. These samples were analysed for nutrients to establish the data bank. The whole population of study area was divided into low and high yielding categories taking chilli yield of 8.50 q/ha as cut off level. Totally 28 nutrient expressions were selected as diagnostic norms that have direct relationship with chilli yield. These expressions had high variance and low co-efficient of variation (CV) that was found to have greater diagnostic precision. Few selected expressions were N/P (6.55), N/K (0.81), N/Ca (1.91), Mg/N (0.21), N/S (5.85), Fe/N (21.57), N/Zn (0.10) etc. The nutritional imbalance index indicated an overall imbalance of the nutrients based on sum of the indices irrespective of sign. The identification of nutrients imbalance through DRIS indices indicated potassium as the most yield limiting followed by sulphur, magnesium and phosphorus. Further nutrients ranges were derived using mean and standard deviation as low, deficient, optimum, high and excess for each nutrient to serve as a diagnostic tool for yield. The optimum concentrations of N, P, K, Ca, Mg, S, Fe and Zn in index leaf ranged from -2.74 to 3.14, 0.54-0.71, 3.86-4.74, 2.27-2.94, 0.93-1.19, 0.44-0.51 per cent, 75.30-92.37 and 28.28-30.15 mg/kg respectively.


Keywords: DRIS, Byadgi chilli, Index leaf, NII, CV
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How to cite this article:

Pushpalatha, M and Bidari, B. L. 2020. Development of Preliminary Leaf Nutrient Norms for Byadgi Chilli (Capsicum annuum L.) using DRIS Approach.Int.J.Curr.Microbiol.App.Sci. 9(4): 3026-3032. doi: https://doi.org/10.20546/ijcmas.2020.904.353