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

Horticultural Development Company

Stoneleigh Park Kenilworth WarwickshireCV8 2TL

T: 024 7669 2051 E: hdc@hdc.ahdb.org.uk

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

FieldVegetables

Outdoor Cucurbits: Nutrient deficiencies & physiological disorders