Nutrient deficiencies

https://www.project-springtime.org/research/deficiencies/

Symptoms Suspected Element
N P K Mg Fe Cu Zn B Mo Mn Over
Fertilization
Yellowing of Younger leaves
Yellowing of Middle leaves
Yellowing of Older leaves
Yellowing Between veins
Old leaves drop
Leaf Curl Over
Leaf Curl Under
Leaf tips burn, Younger leaves
Leaf tips burn, Older leaves
Young leaves wrinkle and curl
Dead areas in the leaves
Leaf growth stunted
Dark green/purplish leaves and stems
Pale green leaf color
Leaf Spotting
Spindly
Soft stems
Hard/brittle stems
Growing tips die
Stunted root growth
Wilting