Interveinal or uniform chlorosis Leaflet tip necrosis Dark green spots accompany chlorosis
on some species Affects youngest leaves only
Symptoms for Lady palms and Licuala sp.
Notice green small green spots and intervienal chlorosis
Notice green small green spots and intervienal chlorosis
New leaves may emerge uniformly chlorotic
New leaves may emerge uniformly chlorotic
Severe Fe deficiency. Notice leaf tip necrosis.
Severe Fe deficiency. Notice leaf tip necrosis.
Insufficient nutrients in the soil Nutrients in unavailable form
pH too high or too low Complexation with phosphates or organic
matter Nutrient imbalance
Manganese deficiency is due to insufficient amount in soil
Manganese deficiency is due to insufficient amount in soil
Insufficient amounts in soil
Nutrient imbalance (due to wrong fertilizer)
Mg deficiencies caused by nutrient imbalances (except for P. canariensis).
K-deficiencies cannot be corrected by adding K alone.
Fe and Mn are also antogonists.
Root problems Root rot diseases Poor soil aeration Improper planting depth
The paurotis palm on the right was suffering from severe Fe deficiency, despite the fact that the grower was treating them with micronutrients.
Too Low Nutrient Deficiency
Too High Soluble salts injury
Proper fertilization Good soil aeration Proper planting depth Proper soil pH
Appropriate fertilizer analysis: Field production or landscape:
8-2-12-4Mg plus micronutrients Effective sources
Alkaline field or landscape soils: N, K,& Mg – 100 controlled released sulfate or chelated (Fe only) micronutrients
Balanced released characteristics for all nutrients
N: S-coated urea, urea-formaldehyde, resin-coated urea or ammonium salts
K: S-coated potassium sulfate Mg: Coated or uncoated prilled kieserite Fe: Trachelene Fe, FeEDDHA (138), not
suitable for blending in granular fertilizers Mn: manganese sulfate (TechMangam) B: Solubor, borax, boric acid
Fertilizer A Fertilizer BFertilizer A Fertilizer B
Fertilizer A Fertilizer BFertilizer A Fertilizer B
Fertilizer A Fertilizer BFertilizer A Fertilizer B
Fertilizer A Fertilizer BFertilizer A Fertilizer B
Field production or landscape: Broadcasting – good Banding – bad Fertigation –maybe,
but… Soil injection - bad
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