CROP WHEAT BARLEY OATS MAIZE SORGHUM SUNFLOWER SOYBEAN COTTON
Reduced tiller production Fe, Mn & N Fe(s), Mn,  N, P & S Fe(s), Mg, Mn, N, P & S          
Increased tiller production Cu & S Cu            
Fewer tillers mature to produce heads or die before producing heads Ca, Fe, Mg, Mn, N, P, K & Zn(s) B, Ca, Fe, Mg, Mn, N(s), K, S & Zn B, Cu(s), Mg(s), Mn, N, P, K(s) & Zn(s)          
Impaired growth of pollen tube, lower pollen production or non viable pollen Cu Cu Cu          
Fewer or smaller mature heads which set few grains/seed Mg, P, K, S & Zn(s) B, Mg, P, K, S & Zn Cu, Mg(s) & S          
Reduced pod set                
Fewer flower bolls               B, Ca, Cu, Mg, Mn, N, P, K, S & Zn
Impaired ear and/or tassel development   Cu            
Reduced size and number of ears                
Flower development impeded               Mn, N, P, K, S & Zn
White heads (containing no grain) Cu              
Deformed seed                
Reduced kernal size                
Lower lint and seed yields               Ca, Mg, N, P, K, S & Zn
Mottled grain N              
Lower grain protein content N & S N & S N & S          
Lower grain yield Ca, Fe, Mg, Mn, N & S B, Ca, Fe(s), Mg, Mn, N, P, K, S & Zn B, Cu, Fe, Mg, Mn, N, P, K, S & Zn         Cu
Fruit, Flower or Grain Production
CROP WHEAT BARLEY OATS MAIZE SORGHUM SUNFLOWER SOYBEAN COTTON
Stunted Growth K & S B, Ca, Cu, Fe, Mg, N, P & K B, Ca, Fe, Mg, Mn, K, S, Zn & Cu         Ca, Cu, Mg, Mn, S & Zn
Patches of poor growth within a healthy crop Mn & Zn Cu, Mn & Zn Cu, Mn & Zn         Mn & Zn
Failure or difficulty of young Ca K Zn          
Failure of young leaves to unroll   B Fe          
Stems/internodes fail to elongate   B, Ca & Zn B & Zn         B, Ca & Zn
Fan shaped stems Ca B, Ca & Zn B          
Reduced branching               Cu, Mg, Mn, N, P, K, S & Zn
Bushy (rosette) growth at top of plant   K & Zn K & Zn         B, Ca & Zn
Growth Patterns and Development
CROP WHEAT BARLEY OATS MAIZE SORGHUM SUNFLOWER SOYBEAN COTTON
Pale green or yellow foliage Fe, Mn, S & Zn Cu, Fe, Mg, Mn, N, K & S Ba, Ca, Cu, Fe, Mn, N, K, S & Zn B, Cu, Fe, Mn, N, K, S & Zn Cu(s), Mg, N, P, K, & S Ca, Fe, Mn & S Mg, Mn, N, K & S Fe, Mg, N & S
Dark green leaves Ca Ca P P(s)     B, Ca, P(s) B, Ca, Mn & P
Orange red leaves P   B & Fe          
Purple leaves or suffusion P P            
Rust brown striped leaves                
Red leaf tips     N, P & Zn          
Purple leaf margins (old leaves)   S            
Blue green foliage                
Rolled leaves     P         B & N
Brittle Leaves Ca Ca & Mn Ca          
Squared leaf ends due to death of leaf tip Ca Ca            
Young leaves short and erect                
Smaller or shorter leaves Mn & P N Ca & P         Cu, N, P & Zn
Erect leaves Ca, N & P N Ca & P          
Wilted leaves or entire plant Cu, Mn & K Cu, Mn & K Ca & Cu         Ca & Fe
Transparent areas between margin and midvein on middle leaves
Torn or malformed young leaves   B  Ca         Mn & Zn
Puckered interveinal tissue               Mn
Black Straw Cu              
Short Stems   S B, Ca, Mn, S & Zn         B, Cu, Fe(s), Mg, Mn, N, P, K, S & Zn
Thin Stems K & Zn Cu, Fe, Mn, N & S N & S         Ca, Fe(s), Mg, N, P, K, S & Zn
Stout Stems Ca, Cu, Mg, Mn & Zn Ca, Mn, P & K B & Mn         B & Mn
Spindly stems Cu, Mg, Mn, N, K & Zn Fe, Mg & N N          
Pale green stems                
Red stems   N & S           N & P
Purple stems P P & S P & S          
Tissue Symptoms
CROP WHEAT BARLEY OATS MAIZE SORGHUM SUNFLOWER SOYBEAN COTTON
Deficiency symptoms appear on young leaves whilst old leaves remain green and healthy Ca, Cu, Fe & S B, Ca, Cu, Fe, Mn & S B, Ca, Cu & Zn B, Ca, Cu & Zn B, Cu, Fe, Mn & Zn B, Ca, Fe, Mn & S B, Fe, Mn & S Fe & Mn
Deficiency symptoms appear on old leaves whilst young leaves remain green and healthy N, P & K Mg, N, P & K Mg, K & Zn Mg, P & K Mg Ca, Mg & K K & Zn Cu, Mg, N & K
Chlorosis of young leaves (early stages) Ca, Cu, Fe & Mn B, Ca, Cu, Fe, Mn & S B, Ca, Cu, Fe & S B, Cu, Fe, S & Zn B, Ca, Cu, Fe, Mn, S & Zn B, Ca, Fe, Mn & S B, Ca, Fe, Mn & S Fe, Mn, S & Zn
Chlorosis of middle aged leaves Zn Zn Mn & Zn Mn   Mg Zn  
Chlorosis of old leaves (early stages) Mg, N, P & K Mg, N, P & K Mg, N, P, K & Zn Mg, N, P & K Mg, N, P & K Mg, N, P & K Mg, N, K & (s) Cu, Mg, N, P & K
Interveinal chlorosis Fe, Mg & Zn B, Fe & Zn Fe & Mg B, Cu, Fe & Mg B, Fe, Mg, Mn, K & Zn Ca, Fe, Mg, Mn & P B, Ca & Fe Cu, Fe, Mg, Mn & K
Marginal chlorosis K P & K B & P Cu Ca N & K   P
Chlorosis starts from tip N, P & K N & K B, Cu, N, P & Zn Cu, N, P & K Cu, N & P      
Veinal chlorosis         N      
Whole leaf chlorosis S S S P & S S N & S S N & S
Mottled interveinal chlorosis             Mg, Mn & Zn K & Zn
Interveinal chlorosis (mid section of leaf)     K & Zn Zn        
Basal chlorosis           Ca    
Veins green and prominent in early stages of chlorosis Fe, Mg & K Fe Fe Fe & Mn Fe & Mg Fe & Mg Fe, Mg, Mn & Zn Cu, Fe, Mg, Mn & K
Yellow - pale green chlorosis Cu, Mg, Mn, N, P & Zn Fe, N & Zn B, Cu, Fe, Mg, N & S B, Fe, Mg, Mn, N & K Ca, Cu, Fe, Mg, N, P, K & Zn B, Ca, Fe, Mn, N, P, K & S B, Ca, Fe, Mn & S Cu, Fe, Mg, Mn, N, P & S
Yellow - orange brown chlorosis K   Mg, P & K       P, K (s)  
Orange - purple chlorosis P P Zn (s)          
Yellow mottling on older leaves           Mg    
Chlorosis followed by death     Cu, Mg (s), P (s) Cu, Mn, P & Zn Ca & Zn N   P
Necrosis and Death

Chlorotic Symptoms
CROP WHEAT BARLEY OATS MAIZE SORGHUM SUNFLOWER SOYBEAN COTTON
Bronze pale brown necrotic lesions     B & Mn         Mg, S & K
Dark brown necrotic lesions Zn B, Mg &K Cu & Zn         N, K, Mn & Zn
Grey-dark brown necrotic lesions   Mn & Zn K          
Grey or white crystalline flecks or necrotic lesions   Mn & K Mn         P
White or yellow bands between midvein and margins                
White - yellow interveinal lesions on young leaves Mn              
White-yellow interveinal lesions on older leaves                
Lesions on stems and petioles                
Necrosis on older leaves Mg Zn           N
Necrotic lesions on petioles/stems               Ca, K
Necrotic lesions on leaf sheaths Zn(s)              
Necrosis concentrated around leaf tips and margins                
Veinal necrosis                
Marginal necrosis   B           K
Interveinal necrosis Mg             Mg, N, P, K(s), S & Zn
Dead tissue rolls or twists into a tube, circle or spiral Ca & Cu Ca & Cu Cu & N          
Death of florets (whiteheads)   Cu            
Death of shoots Mn B & Ca Ca          
Death of leaf tips   B, Ca & Cu Zn          
Death of youngest leaves before complete emergence from leaf sheath Mn Ca            
Tissue margin death K              
Death of middle leaf area Zn   K          
Death of basal tissue Mn             B
Death of whole leaf               Ca, Mg, N, P & Zn
Death of Plant                
Bud death               Ca
Death before maturity Mn   Ca         Ca(s)
Death of plant from top down Cu Cu Cu          
Thatch of dead leaves around base of plant N & P Mg, N & K N, P & K         B, Ca(s)