Diagnostic Soil Nutrient Standards and Identification of Yield Limiting Nutrients in Onion (Allium cepa) Using DRIS

Soil samples collected from a survey of fifty onion growing fields in Karnataka were analyzed for various macro and micronutrients for establishing a data bank to develop soil nutrient norms. By using Diagnosis and Recommendation Integrated System (DRIS), the whole population was divided into two su...

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Autor principal:	K Anjaneyulu
Formato:	article
Lenguaje:	EN
Publicado:	Society for Promotion of Horticulture - Indian Institute of Horticultural Research 2008
Materias:	nutrients norms dris indices onion Plant culture SB1-1110
Acceso en línea:	https://doaj.org/article/6890532bfe3742f68d7b72ab7588c464
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spelling	oai:doaj.org-article:6890532bfe3742f68d7b72ab7588c4642021-12-02T13:15:47ZDiagnostic Soil Nutrient Standards and Identification of Yield Limiting Nutrients in Onion (Allium cepa) Using DRIS0973-354X2582-4899https://doaj.org/article/6890532bfe3742f68d7b72ab7588c4642008-06-01T00:00:00Zhttps://jhs.iihr.res.in/index.php/jhs/article/view/592https://doaj.org/toc/0973-354Xhttps://doaj.org/toc/2582-4899Soil samples collected from a survey of fifty onion growing fields in Karnataka were analyzed for various macro and micronutrients for establishing a data bank to develop soil nutrient norms. By using Diagnosis and Recommendation Integrated System (DRIS), the whole population was divided into two sub-groups namely, low and high yielding and selected nutrient expressions that have shown higher variance and lower coefficient of variation as diagnostic norms, viz K/N (1.229), S/N (0.238), Ca/N (20.62), P/Zn (37.41), Mg/K (0.6.859), Fe/Mg (0.004), Fe/Zn (5.736) etc. In addition, five nutrient ranges have been derived using mean and standard deviation as low, deficient, optimum, high and excess for each nutrient to serve as a guide for diagnostic purpose. The optimum organic carbon ranged from 7.1 to 11.0 g kg-1, N from 115 to 178 mg kg-1, P from 26 to 38 mg kg-1 , K from 163 to 217 mg kg-1, Ca from 2199 to 3398 mg kg-1 , Mg from 802 to 1167 mg kg-1 and S from 34 to 43 mg kg-1. Among DTPA extractable micronutrients, the optimum iron ranged from 3.40 to 4.34 mg kg-1, manganese from 5.84 to 6.66 mg kg-1, zinc from 0.67 to 1.01 mg kg-1 and copper from 1.70 to 2.11 mg kg-1 for onion. The diagnosis of nutrient imbalance identified through DRIS indices indicated that organic carbon, phosphorus and zinc were the most common yield limiting nutrients in onion.K AnjaneyuluSociety for Promotion of Horticulture - Indian Institute of Horticultural Researcharticlenutrientsnormsdris indicesonionPlant cultureSB1-1110ENJournal of Horticultural Sciences, Vol 3, Iss 1, Pp 39-42 (2008)
institution	DOAJ
collection	DOAJ
language	EN
topic	nutrients norms dris indices onion Plant culture SB1-1110
spellingShingle	nutrients norms dris indices onion Plant culture SB1-1110 K Anjaneyulu Diagnostic Soil Nutrient Standards and Identification of Yield Limiting Nutrients in Onion (Allium cepa) Using DRIS
description	Soil samples collected from a survey of fifty onion growing fields in Karnataka were analyzed for various macro and micronutrients for establishing a data bank to develop soil nutrient norms. By using Diagnosis and Recommendation Integrated System (DRIS), the whole population was divided into two sub-groups namely, low and high yielding and selected nutrient expressions that have shown higher variance and lower coefficient of variation as diagnostic norms, viz K/N (1.229), S/N (0.238), Ca/N (20.62), P/Zn (37.41), Mg/K (0.6.859), Fe/Mg (0.004), Fe/Zn (5.736) etc. In addition, five nutrient ranges have been derived using mean and standard deviation as low, deficient, optimum, high and excess for each nutrient to serve as a guide for diagnostic purpose. The optimum organic carbon ranged from 7.1 to 11.0 g kg-1, N from 115 to 178 mg kg-1, P from 26 to 38 mg kg-1 , K from 163 to 217 mg kg-1, Ca from 2199 to 3398 mg kg-1 , Mg from 802 to 1167 mg kg-1 and S from 34 to 43 mg kg-1. Among DTPA extractable micronutrients, the optimum iron ranged from 3.40 to 4.34 mg kg-1, manganese from 5.84 to 6.66 mg kg-1, zinc from 0.67 to 1.01 mg kg-1 and copper from 1.70 to 2.11 mg kg-1 for onion. The diagnosis of nutrient imbalance identified through DRIS indices indicated that organic carbon, phosphorus and zinc were the most common yield limiting nutrients in onion.
format	article
author	K Anjaneyulu
author_facet	K Anjaneyulu
author_sort	K Anjaneyulu
title	Diagnostic Soil Nutrient Standards and Identification of Yield Limiting Nutrients in Onion (Allium cepa) Using DRIS
title_short	Diagnostic Soil Nutrient Standards and Identification of Yield Limiting Nutrients in Onion (Allium cepa) Using DRIS
title_full	Diagnostic Soil Nutrient Standards and Identification of Yield Limiting Nutrients in Onion (Allium cepa) Using DRIS
title_fullStr	Diagnostic Soil Nutrient Standards and Identification of Yield Limiting Nutrients in Onion (Allium cepa) Using DRIS
title_full_unstemmed	Diagnostic Soil Nutrient Standards and Identification of Yield Limiting Nutrients in Onion (Allium cepa) Using DRIS
title_sort	diagnostic soil nutrient standards and identification of yield limiting nutrients in onion (allium cepa) using dris
publisher	Society for Promotion of Horticulture - Indian Institute of Horticultural Research
publishDate	2008
url	https://doaj.org/article/6890532bfe3742f68d7b72ab7588c464
work_keys_str_mv	AT kanjaneyulu diagnosticsoilnutrientstandardsandidentificationofyieldlimitingnutrientsinonionalliumcepausingdris
_version_	1718393336008540160

Diagnostic Soil Nutrient Standards and Identification of Yield Limiting Nutrients in Onion (Allium cepa) Using DRIS

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