nutrient deficiency symptoms physiological disorders · horticultural development company...

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Horticultural Development Company Stoneleigh Park Kenilworth Warwickshire CV8 2TL T: 024 7669 2051 E: [email protected] www.hdc.org.uk Nutrient deficiency symptoms Physiological disorders HDC is a division of the Agriculture and Horticulture Development Board (AHDB). Manganese • Initial interveinal chlorosis • Leaves become yellow © The University of Warwick Phosphorus • Young leaves dull emerald-green and very ‘flat’ • Leaves expand very slowly © The University of Warwick Drought stress • May result in undersized fruit © Cooling, UK © mdonline Poor pollination • Blossom end of fruit shrivels up and is prone to rot • Fruit misshapen and small © Langston, USA, Bugwood © Utah state university extension Potassium • Starts with faint marginal chlorosis on green leaves • Progresses to uniform chlorosis and marginal scorch/necrosis © The University of Warwick © The University of Warwick Nitrogen • Uniform yellowing of older leaves © The University of Warwick © Cooling, UK Magnesium • Yellowing between leaf veins • Progresses to severe interveinal scorch & stunting © The University of Warwick Water-logging • Symptoms appear as nutrient deficiencies or as generalised yellowing of leaves © University of Kentucky Cooperative Extension Service Wind damage • Damage to stems and leaf burn may occur © Bernie www.growfruitandveg.co.uk © Daniel Drost, Utah State University Boron • New leaves small, brittle, misshapen • Fruit may crack and have necrotic spots © The University of Warwick © The University of Warwick Calcium • Tipburn and concave cupping of very young leaves • Fruit may develop blossom end rot © The University of Warwick © Daniel Drost, Utah State University Field Vegetables Outdoor Cucurbits: Nutrient deficiencies & physiological disorders

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Page 1: Nutrient deficiency symptoms Physiological disorders · Horticultural Development Company Stoneleigh Park Kenilworth Warwickshire CV8 2TL T: 024 7669 2051 E: hdc@hdc.ahdb.org.uk Nutrient

Horticultural Development Company

Stoneleigh Park Kenilworth WarwickshireCV8 2TL

T: 024 7669 2051 E: [email protected]

www.hdc.org.uk

Nutrient deficiency symptoms Physiological disorders

HDC is a division of the Agriculture and Horticulture Development Board (AHDB).

Manganese• Initialinterveinalchlorosis• Leavesbecomeyellow

©TheUniversityofWarwick

Phosphorus• Youngleavesdullemerald-greenandvery‘flat’• Leavesexpandveryslowly

©TheUniversityofWarwick

Drought stress• Mayresultinundersizedfruit

© Cooling, UK

© mdonline

Poor pollination• Blossomendoffruitshrivelsupandispronetorot• Fruitmisshapenandsmall

© Langston, USA, Bugwood

©Utahstateuniversityextension

Potassium• Startswithfaintmarginalchlorosisongreenleaves• Progressestouniformchlorosisandmarginalscorch/necrosis

©TheUniversityofWarwick

©TheUniversityofWarwick

Nitrogen• Uniformyellowingofolderleaves

©TheUniversityofWarwick

© Cooling, UK

Magnesium• Yellowingbetweenleafveins• Progressestosevereinterveinalscorch&stunting

©TheUniversityofWarwick

Water-logging• Symptomsappearasnutrientdeficienciesorasgeneralised

yellowingofleaves

©UniversityofKentuckyCooperativeExtensionService

Wind damage• Damagetostemsandleafburnmayoccur

© Bernie www.growfruitandveg.co.uk

©DanielDrost,UtahStateUniversity

Boron• Newleavessmall,brittle,misshapen• Fruitmaycrackandhavenecroticspots

©TheUniversityofWarwick

©TheUniversityofWarwick

Calcium• Tipburnandconcavecuppingofveryyoungleaves• Fruitmaydevelopblossomendrot

©TheUniversityofWarwick

©DanielDrost,UtahStateUniversity

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