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Interveinal or uniform chlorosis Leaflet tip necrosis Dark green spots accompany chlorosis
on some species Affects youngest leaves only
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Symptoms for Lady palms and Licuala sp.
Notice green small green spots and intervienal chlorosis
Notice green small green spots and intervienal chlorosis
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New leaves may emerge uniformly chlorotic
New leaves may emerge uniformly chlorotic
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Severe Fe deficiency. Notice leaf tip necrosis.
Severe Fe deficiency. Notice leaf tip necrosis.
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Insufficient nutrients in the soil Nutrients in unavailable form
pH too high or too low Complexation with phosphates or organic
matter Nutrient imbalance
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Manganese deficiency is due to insufficient amount in soil
Manganese deficiency is due to insufficient amount in soil
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Insufficient amounts in soil
Nutrient imbalance (due to wrong fertilizer)
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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.
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Root problems Root rot diseases Poor soil aeration Improper planting depth
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The paurotis palm on the right was suffering from severe Fe deficiency, despite the fact that the grower was treating them with micronutrients.
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Too Low Nutrient Deficiency
Too High Soluble salts injury
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Proper fertilization Good soil aeration Proper planting depth Proper soil pH
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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
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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
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Fertilizer A Fertilizer BFertilizer A Fertilizer B
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Fertilizer A Fertilizer BFertilizer A Fertilizer B
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Fertilizer A Fertilizer BFertilizer A Fertilizer B
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Fertilizer A Fertilizer BFertilizer A Fertilizer B
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Field production or landscape: Broadcasting – good Banding – bad Fertigation –maybe,
but… Soil injection - bad
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