Development of Leaf Nutrient Norms and Identification of Yield-Limiting Nutrients Using DRIS in Sapota cv. Kalipatti

A survey was conducted in 106 orchards growing sapota cv. Kalipatti in Raichur, Dharwad and Belgaum districts of Northern Karnataka for developing leaf nutrient norms through Diagnosis and Recommendation Integrated System (DRIS) for nutrient management. Leaf samples collected were processed and anal...

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Autores principales:	B Savita, K Anjaneyulu
Formato:	article
Lenguaje:	EN
Publicado:	Society for Promotion of Horticulture - Indian Institute of Horticultural Research 2008
Materias:	dris norms indices nutrients sapota kalipatti Plant culture SB1-1110
Acceso en línea:	https://doaj.org/article/919e43e3b932475eadde5fca19e26821
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spelling	oai:doaj.org-article:919e43e3b932475eadde5fca19e268212021-12-02T12:39:44ZDevelopment of Leaf Nutrient Norms and Identification of Yield-Limiting Nutrients Using DRIS in Sapota cv. Kalipatti0973-354X2582-4899https://doaj.org/article/919e43e3b932475eadde5fca19e268212008-12-01T00:00:00Zhttps://jhs.iihr.res.in/index.php/jhs/article/view/575https://doaj.org/toc/0973-354Xhttps://doaj.org/toc/2582-4899A survey was conducted in 106 orchards growing sapota cv. Kalipatti in Raichur, Dharwad and Belgaum districts of Northern Karnataka for developing leaf nutrient norms through Diagnosis and Recommendation Integrated System (DRIS) for nutrient management. Leaf samples collected were processed and analyzed for macro-and micronutrient status and a data bank was established. The entire population was divided into two sub-groups, namely, low-and high-yielding types to derive the norms. Fifty-five nutrient expressions were chosen as diagnostic norms using DRIS, which have shown higher variance and lower coefficient of variation that are found to have greater diagnostic precision viz., N/K (1.731), N/Ca (0.928), Mg/N (0.360), Fe/N (99.89), N/Cu (0.104), N/B (0.037), Mg/Ca (0.329), Ca/B (0.040), Mg/S (1.103), Fe/Mg (278.6), Mg/Zn (0.037), Mg/B (0.013), Fe/Zn (10.39) etc. The nutritional balance index (NBI) indicated an overall imbalance of nutrients based on sum of the indices, irrespective of sign. Diagnosis of nutrient imbalance through DRIS indices indicated that potassium, boron and zinc to be the most common yield-limiting nutrients in the orchards. In addition, five nutrient ranges/standards were derived using mean and standard deviation as deficient, low, optimum, high and excess for each nutrient, to serve as a guide for diagnostics. Optimum leaf N ranged from 1.51 to 2.09%, P from 0.06 to 0.15% and K from 0.83 to 1.44%. The optimum concentration ranged from 1.36 to 2.34% for Ca, 0.54 to 0.68% for Mg and 0.48 to 0.80 for S. Among the micronutrients, optimum Fe, Mn, Zn, Cu and B concentrations ranged from 109 to 206 mg kg-1, 49 to 99 mg kg-1, 13.3 to 21.9 mg kg-1, 3.76 to 9.10 mg kg-1 and 34.8 to 66.8 mg kg-1, respectively, for sapota cv. Kalipatti.B SavitaK AnjaneyuluSociety for Promotion of Horticulture - Indian Institute of Horticultural ResearcharticledrisnormsindicesnutrientssapotakalipattiPlant cultureSB1-1110ENJournal of Horticultural Sciences, Vol 3, Iss 2, Pp 136-140 (2008)
institution	DOAJ
collection	DOAJ
language	EN
topic	dris norms indices nutrients sapota kalipatti Plant culture SB1-1110
spellingShingle	dris norms indices nutrients sapota kalipatti Plant culture SB1-1110 B Savita K Anjaneyulu Development of Leaf Nutrient Norms and Identification of Yield-Limiting Nutrients Using DRIS in Sapota cv. Kalipatti
description	A survey was conducted in 106 orchards growing sapota cv. Kalipatti in Raichur, Dharwad and Belgaum districts of Northern Karnataka for developing leaf nutrient norms through Diagnosis and Recommendation Integrated System (DRIS) for nutrient management. Leaf samples collected were processed and analyzed for macro-and micronutrient status and a data bank was established. The entire population was divided into two sub-groups, namely, low-and high-yielding types to derive the norms. Fifty-five nutrient expressions were chosen as diagnostic norms using DRIS, which have shown higher variance and lower coefficient of variation that are found to have greater diagnostic precision viz., N/K (1.731), N/Ca (0.928), Mg/N (0.360), Fe/N (99.89), N/Cu (0.104), N/B (0.037), Mg/Ca (0.329), Ca/B (0.040), Mg/S (1.103), Fe/Mg (278.6), Mg/Zn (0.037), Mg/B (0.013), Fe/Zn (10.39) etc. The nutritional balance index (NBI) indicated an overall imbalance of nutrients based on sum of the indices, irrespective of sign. Diagnosis of nutrient imbalance through DRIS indices indicated that potassium, boron and zinc to be the most common yield-limiting nutrients in the orchards. In addition, five nutrient ranges/standards were derived using mean and standard deviation as deficient, low, optimum, high and excess for each nutrient, to serve as a guide for diagnostics. Optimum leaf N ranged from 1.51 to 2.09%, P from 0.06 to 0.15% and K from 0.83 to 1.44%. The optimum concentration ranged from 1.36 to 2.34% for Ca, 0.54 to 0.68% for Mg and 0.48 to 0.80 for S. Among the micronutrients, optimum Fe, Mn, Zn, Cu and B concentrations ranged from 109 to 206 mg kg-1, 49 to 99 mg kg-1, 13.3 to 21.9 mg kg-1, 3.76 to 9.10 mg kg-1 and 34.8 to 66.8 mg kg-1, respectively, for sapota cv. Kalipatti.
format	article
author	B Savita K Anjaneyulu
author_facet	B Savita K Anjaneyulu
author_sort	B Savita
title	Development of Leaf Nutrient Norms and Identification of Yield-Limiting Nutrients Using DRIS in Sapota cv. Kalipatti
title_short	Development of Leaf Nutrient Norms and Identification of Yield-Limiting Nutrients Using DRIS in Sapota cv. Kalipatti
title_full	Development of Leaf Nutrient Norms and Identification of Yield-Limiting Nutrients Using DRIS in Sapota cv. Kalipatti
title_fullStr	Development of Leaf Nutrient Norms and Identification of Yield-Limiting Nutrients Using DRIS in Sapota cv. Kalipatti
title_full_unstemmed	Development of Leaf Nutrient Norms and Identification of Yield-Limiting Nutrients Using DRIS in Sapota cv. Kalipatti
title_sort	development of leaf nutrient norms and identification of yield-limiting nutrients using dris in sapota cv. kalipatti
publisher	Society for Promotion of Horticulture - Indian Institute of Horticultural Research
publishDate	2008
url	https://doaj.org/article/919e43e3b932475eadde5fca19e26821
work_keys_str_mv	AT bsavita developmentofleafnutrientnormsandidentificationofyieldlimitingnutrientsusingdrisinsapotacvkalipatti AT kanjaneyulu developmentofleafnutrientnormsandidentificationofyieldlimitingnutrientsusingdrisinsapotacvkalipatti
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Development of Leaf Nutrient Norms and Identification of Yield-Limiting Nutrients Using DRIS in Sapota cv. Kalipatti

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