Nutrientes

N Nitrógeno
P Fósforo
K Potasio
Mg Magnesio
Ca Calcio
S Azufre
B Boro
Fe Hierro
Mn Manganeso
Zn Zinc

Banana - Chlorosis

Síntomas
Slow, stunted growth with 'rosetting' appearance. Thin and woody stems; petioles break easily. Broad longitudinal chlorotic bands with necrotic spots may occur on both sides of the midrib or along the leaf edge. Marginal necroses on oldest leaves coalesce, resulting in premature senescence. Younger leaves may show bluish to purple tint, especially on backside.

Causas
Phosphorus deficiency. Excess nitrogen fertilization also leads to a blue-green color of the leaves. Manganese deficiency also causes marginal necrosis, but these have a darker color.

Banana - Growth retardation

Síntomas
Slow, stunted growth with 'rosetting' appearance. Thin and woody stems; petioles break easily. Broad longitudinal chlorotic bands with necrotic spots may occur on both sides of the midrib. Marginal necroses on oldest leaves coalesce, resulting in premature senescence. Younger leaves may show bluish to purple tint, especially on backside.

Causas
Phosphorus deficiency

Banana - Chlorosis

Síntomas
Slow, stunted growth with 'rosetting' appearance. Thin and woody stems; petioles break easily. Broad longitudinal chlorotic bands with necrotic spots may occur on both sides of the midrib. Marginal necroses on oldest leaves coalesce, resulting in premature senescence. Younger leaves may show bluish to purple tint, especially on backside.

Causas
Phosphorus deficiency

Banana - Discolouration

Síntomas
Slow, stunted growth with 'rosetting' appearance. Thin and woody stems; petioles break easily. Broad longitudinal chlorotic bands with necrotic spots may occur on both sides of the midrib. Marginal necroses on oldest leaves coalesce, resulting in premature senescence. Younger leaves may show bluish to purple tint, especially on backside.

Causas
Phosphorus deficiency

Phosphorus deficiency empeorado por

  • Acidic or very alkaline (calcareaus) soils
  • Low organic matter
  • Cold or wet conditions
  • Crops with a poorly developed root system
  • Soils with low P reserves
  • Soils with a high phosphate capacity
  • Iron rich soils

Fósforo tiene importancia para

  • Part of nucleic acids, phospholipids and energy storing and transferring systems in plants
  • Important for root growth, flower development and fruit set