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
FieldVegetables
Outdoor Cucurbits: Nutrient deficiencies & physiological disorders
