Determination of growth, leaf yield, quality and safety of potted Ocimum gratissimum L. cultivated using different fertilizer types

Purpose: The purpose of the study was to produce compost and compare the effect with other fertilizer types on scent leaf vegetative growth, yield, nutrient contents and heavy metal accumulation for safety of consumers. Method: Cow dung, compost, NPK fertilizer and urea were applied to scent lea...

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Main Authors: Nneka Angela Okoli, Elozonachukwu Stella Maris Udoh, Chukwudi Michael Lambert
Format: Article
Language:English
Published: OICC Press 2024-11-01
Series:International Journal of Recycling of Organic Waste in Agriculture
Subjects:
Online Access:https://oiccpress.com/ijrowa/article/view/8227
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author Nneka Angela Okoli
Elozonachukwu Stella Maris Udoh
Chukwudi Michael Lambert
author_facet Nneka Angela Okoli
Elozonachukwu Stella Maris Udoh
Chukwudi Michael Lambert
author_sort Nneka Angela Okoli
collection DOAJ
description Purpose: The purpose of the study was to produce compost and compare the effect with other fertilizer types on scent leaf vegetative growth, yield, nutrient contents and heavy metal accumulation for safety of consumers. Method: Cow dung, compost, NPK fertilizer and urea were applied to scent leaf stem cuttings at 2 weeks after planting. Control was zero application of fertilizer. Treatments were replicated four times in a completely randomized design.  Concentrations of Cu, Fe, Pb, Cd, Zn and Ni in the leaves were determined at 8 weeks after treatment application (WATA).   Results: Compost increased plant height from 32.40 to 66.25 cm while zero application of fertilizer increased plant height from 20.75 to 38.25 cm between 2 to 8 WATA. Compost (3.88 tha-1) significantly (p<0.05) produced highest leaf yield than zero application of fertilizer (1.29 tha-1). Fe, Cu, Pb accumulation were lowest in scent leaf produced with NPK fertilizer while Zn, Ni and Cd accumulation were lowest in scent leaf produced with cow dung. Pb was higher in scent leaf produced with compost (0.48 ± 0.09 mg kg-1) and lower in scent leaf cultivated with NPk fertilizer (0.11 ± 0.06 mg kg-1). Despite the high content of heavy metals in scent leaf produced with compost, heavy metal bioaccumulations were below FAO/WHO permissible values. Conclusion: Soils amendment with 5 tha-1 of compost showed superiority over other fertilizer types in terms of growth and leaf yield of scent leaf. Cow dung and NPK fertilizer suppressed bioaccumulation of heavy metals in scent leaf and promoted nutrient quality and safety of the scent leaf. Research Highlights • Organic and inorganic fertilizers can be used to amend the soil • Organic and inorganic fertilizers contain heavy metals • Crops absorb heavy metals and heavy metals above FAO/WHO permissible value makes the crop unsafe • Compost showed superiority in improving growth and yield of scent leaf above other fertilizers • Concentration of heavy metals in scent leaf grown with compost was below FAO/WHO permissible value 
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institution Kabale University
issn 2195-3228
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publishDate 2024-11-01
publisher OICC Press
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series International Journal of Recycling of Organic Waste in Agriculture
spelling doaj-art-a9825d5a4f5c4af9be9d332ec46b0b062025-02-03T06:55:06ZengOICC PressInternational Journal of Recycling of Organic Waste in Agriculture2195-32282251-77152024-11-0110.57647/ijrowa-cg5w-wn43Determination of growth, leaf yield, quality and safety of potted Ocimum gratissimum L. cultivated using different fertilizer typesNneka Angela Okoli0https://orcid.org/0000-0003-2608-6482Elozonachukwu Stella Maris Udoh1https://orcid.org/0009-0002-3904-2489Chukwudi Michael Lambert2https://orcid.org/0009-0005-1181-2578Nnamdi Azikiwe University Awka, NigeriaNnamdi Azikiwe University Awka, NigeriaNnamdi Azikiwe University Awka, Nigeria Purpose: The purpose of the study was to produce compost and compare the effect with other fertilizer types on scent leaf vegetative growth, yield, nutrient contents and heavy metal accumulation for safety of consumers. Method: Cow dung, compost, NPK fertilizer and urea were applied to scent leaf stem cuttings at 2 weeks after planting. Control was zero application of fertilizer. Treatments were replicated four times in a completely randomized design.  Concentrations of Cu, Fe, Pb, Cd, Zn and Ni in the leaves were determined at 8 weeks after treatment application (WATA).   Results: Compost increased plant height from 32.40 to 66.25 cm while zero application of fertilizer increased plant height from 20.75 to 38.25 cm between 2 to 8 WATA. Compost (3.88 tha-1) significantly (p<0.05) produced highest leaf yield than zero application of fertilizer (1.29 tha-1). Fe, Cu, Pb accumulation were lowest in scent leaf produced with NPK fertilizer while Zn, Ni and Cd accumulation were lowest in scent leaf produced with cow dung. Pb was higher in scent leaf produced with compost (0.48 ± 0.09 mg kg-1) and lower in scent leaf cultivated with NPk fertilizer (0.11 ± 0.06 mg kg-1). Despite the high content of heavy metals in scent leaf produced with compost, heavy metal bioaccumulations were below FAO/WHO permissible values. Conclusion: Soils amendment with 5 tha-1 of compost showed superiority over other fertilizer types in terms of growth and leaf yield of scent leaf. Cow dung and NPK fertilizer suppressed bioaccumulation of heavy metals in scent leaf and promoted nutrient quality and safety of the scent leaf. Research Highlights • Organic and inorganic fertilizers can be used to amend the soil • Organic and inorganic fertilizers contain heavy metals • Crops absorb heavy metals and heavy metals above FAO/WHO permissible value makes the crop unsafe • Compost showed superiority in improving growth and yield of scent leaf above other fertilizers • Concentration of heavy metals in scent leaf grown with compost was below FAO/WHO permissible value  https://oiccpress.com/ijrowa/article/view/8227CompostHeavy metalsInorganic fertilizerOrganic manureFood safety
spellingShingle Nneka Angela Okoli
Elozonachukwu Stella Maris Udoh
Chukwudi Michael Lambert
Determination of growth, leaf yield, quality and safety of potted Ocimum gratissimum L. cultivated using different fertilizer types
International Journal of Recycling of Organic Waste in Agriculture
Compost
Heavy metals
Inorganic fertilizer
Organic manure
Food safety
title Determination of growth, leaf yield, quality and safety of potted Ocimum gratissimum L. cultivated using different fertilizer types
title_full Determination of growth, leaf yield, quality and safety of potted Ocimum gratissimum L. cultivated using different fertilizer types
title_fullStr Determination of growth, leaf yield, quality and safety of potted Ocimum gratissimum L. cultivated using different fertilizer types
title_full_unstemmed Determination of growth, leaf yield, quality and safety of potted Ocimum gratissimum L. cultivated using different fertilizer types
title_short Determination of growth, leaf yield, quality and safety of potted Ocimum gratissimum L. cultivated using different fertilizer types
title_sort determination of growth leaf yield quality and safety of potted ocimum gratissimum l cultivated using different fertilizer types
topic Compost
Heavy metals
Inorganic fertilizer
Organic manure
Food safety
url https://oiccpress.com/ijrowa/article/view/8227
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AT elozonachukwustellamarisudoh determinationofgrowthleafyieldqualityandsafetyofpottedocimumgratissimumlcultivatedusingdifferentfertilizertypes
AT chukwudimichaellambert determinationofgrowthleafyieldqualityandsafetyofpottedocimumgratissimumlcultivatedusingdifferentfertilizertypes