Potassium deficiency-Banana

Symptoms
Symptoms of potassium deficiency are visible on older leaves first. Chlorosis starts from the leaf tips in the intercostal areas. The yellow to orange zones coalesce and spread over the whole leaf, subsequently followed by a dark brown necrosis. The necrosis may also stay limited on the marginal area, resulting in so-called leaf scorch. K undersupply causes shortening of internodes that leads to a bushy shoot growth ('arrepollamiento'). Single fruit size as well as hand and bunch size are reduced.

Reasons
Potassium deficiency. Similar leaf symptoms may be caused by manganese or phosphorus deficiency, which also result in chlorosis, followed by necrosis. However, Mn deficiency is visible on younger leaves first. Magnesium deficiency causes interveinal chlorosis with necrotic zones later, too, but these are spread over the whole leaf area and do not concentrate on the leaf tip or margin. Salt stress due to overfertilization may also be a reason for marginal scorching.

Symptoms
Symptoms of potassium deficiency are visible on older leaves first. Chlorosis starts from the leaf tips in the intercostal areas. The yellow to orange zones coalesce and spread over the whole leaf, subsequently followed by a dark brown necrosis. The necrosis may also stay limited on the marginal area, resulting in so-called leaf scorch. K undersupply causes shortening of internodes that leads to a bushy shoot growth ('arrepollamiento'). Single fruit size as well as hand and bunch size are reduced.

Reasons
Potassium deficiency. Similar leaf symptoms may be caused by manganese or phosphorus deficiency, which also result in chlorosis, followed by necrosis. However, Mn deficiency is visible on younger leaves first. Magnesium deficiency causes interveinal chlorosis with necrotic zones later, too, but these are spread over the whole leaf area and do not concentrate on the leaf tip or margin. Salt stress due to overfertilization may also be a reason for marginal scorching.

Symptoms
Symptoms of potassium deficiency are visible on older leaves first. Chlorosis starts from the leaf tips in the intercostal areas. The yellow to orange zones coalesce and spread over the whole leaf, subsequently followed by a dark brown necrosis. The necrosis may also stay limited on the marginal area, resulting in so-called leaf scorch. K undersupply causes shortening of internodes that leads to a bushy shoot growth ('arrepollamiento'). Single fruit size as well as hand and bunch size are reduced.

Reasons
Potassium deficiency. Similar leaf symptoms may be caused by manganese or phosphorus deficiency, which also result in chlorosis, followed by necrosis. However, Mn deficiency is visible on younger leaves first. Magnesium deficiency causes interveinal chlorosis with necrotic zones later, too, but these are spread over the whole leaf area and do not concentrate on the leaf tip or margin. Salt stress due to overfertilization may also be a reason for marginal scorching.

Symptoms
Symptoms of potassium deficiency are visible on older leaves first. Chlorosis starts from the leaf tips in the intercostal areas. The yellow to orange zones coalesce and spread over the whole leaf, subsequently followed by a dark brown necrosis. The necrosis may also stay limited on the marginal area, resulting in so-called leaf scorch. K undersupply causes shortening of internodes that leads to a bushy shoot growth ('arrepollamiento'). Single fruit size as well as hand and bunch size are reduced.

Reasons
Severe potassium deficiency. Similar leaf symptoms may be caused by manganese or phosphorus deficiency, which also result in chlorosis, followed by necrosis. However, Mn deficiency is visible on younger leaves first. Magnesium deficiency causes interveinal chlorosis with necrotic zones later, too, but these are spread over the whole leaf area and do not concentrate on the leaf tip or margin. Salt stress due to overfertilization may also be a reason for marginal scorching.

Symptoms
Symptoms of potassium deficiency are visible on older leaves first. Chlorosis starts from the leaf tips in the intercostal areas. The yellow to orange zones coalesce and spread over the whole leaf, subsequently followed by a dark brown necrosis. The necrosis may also stay limited on the marginal area, resulting in so-called leaf scorch. K undersupply causes shortening of internodes that leads to a bushy shoot growth ('arrepollamiento'). Single fruit size as well as hand and bunch size are reduced.

Reasons
Potassium deficiency. Similar leaf symptoms may be caused by manganese or phosphorus deficiency, which also result in chlorosis, followed by necrosis. However, Mn deficiency is visible on younger leaves first. Magnesium deficiency causes interveinal chlorosis with necrotic zones later, too, but these are spread over the whole leaf area and do not concentrate on the leaf tip or margin. Salt stress due to overfertilization may also be a reason for marginal scorching.

Symptoms
Symptoms of potassium deficiency are visible on older leaves first. Chlorosis starts from the leaf tips in the intercostal areas. The yellow to orange zones coalesce and spread over the whole leaf, subsequently followed by a dark brown necrosis. The necrosis may also stay limited on the marginal area, resulting in so-called leaf scorch. K undersupply causes shortening of internodes that leads to a bushy shoot growth ('arrepollamiento'). Single fruit size as well as hand and bunch size are reduced.

Reasons
Potassium deficiency. Similar leaf symptoms may be caused by manganese or phosphorus deficiency, which also result in chlorosis, followed by necrosis. However, Mn deficiency is visible on younger leaves first. Magnesium deficiency causes interveinal chlorosis with necrotic zones later, too, but these are spread over the whole leaf area and do not concentrate on the leaf tip or margin. Salt stress due to overfertilization may also be a reason for marginal scorching.

Symptoms
Symptoms of potassium deficiency are visible on older leaves first. Chlorosis starts from the leaf tips in the intercostal areas. The yellow to orange zones coalesce and spread over the whole leaf, subsequently followed by a dark brown necrosis. The necrosis may also stay limited on the marginal area, resulting in so-called leaf scorch. K undersupply causes shortening of internodes that leads to a bushy shoot growth ('arrepollamiento'). Single fruit size as well as hand and bunch size are reduced.

Reasons
Potassium deficiency. Similar leaf symptoms may be caused by manganese or phosphorus deficiency, which also result in chlorosis, followed by necrosis. However, Mn deficiency is visible on younger leaves first. Magnesium deficiency causes interveinal chlorosis with necrotic zones later, too, but these are spread over the whole leaf area and do not concentrate on the leaf tip or margin. Salt stress due to overfertilization may also be a reason for marginal scorching.