Other Causes of Injury to Bananas




Common Injuries


Leaf rubbing scars
Banana fruit scarring, possibly due to leaf rubbing injurySap scars on banana fruits
Fig. 1 magnifying glass 
Fig. 2 magnifying glass Fig. 3 magnifying glass 

Fig. 1. Leaf rubbing scars
Fig. 2. Banana fruit scarring, possibly due to leaf rubbing injury
Fig. 3. Sap scars on banana fruits
 
Glyphosate herbicide injury to banana foliageBanana: Glyphosate herbicide injury
Fig. 4 magnifying glassFig. 5 magnifying glass

Fig. 4,5. Glyphosate herbicide injury to banana foliage

Lighting Injury

Lightning injury to banana plants at a farm near Hilo, HawaiiLightning injury to banana plants at a farm near Hilo, HawaiiLightning injury to banana plants at a farm near Hilo, HawaiiLightning injury to banana plants at a farm near Hilo, Hawaii
Fig. 6 magnifying glassFig. 7 magnifying glassFig. 8 magnifying glassFig. 9 magnifying glass

Fig. 6,7,8. Lightning injury to banana plants at a farm near Hilo, Hawaii
Fig. 9. Collapsed and broken banana pseudostem struck by lightning

Animal Damage

Rat feeding injury to unripe banana fruitsRat feeding injury to unripe banana fruitsRats feeding injury to plants and crops in Hawaii
Fig. 10 magnifying glassFig. 11 magnifying glassFig. 12 magnifying glass
Rat claws scratching injury to banana fruit peels.Rats feeding injury to banana fruitRats feeding injury to plants and crops in Hawaii. Banana (rats nest)
Fig. 13 magnifying glassFig. 14 magnifying glassFig. 15 magnifying glass

Fig. 10,12. Rats feeding injury to banana fruit
Fig. 11. Rat feeding injury to unripe banana fruits
Fig. 13,14. Rat claws scratching injury to banana fruit peels
Fig. 15. Rats feeding injury to plants and crops in Hawaii. Banana (rats nest)

Bird-feeding injury to banana fruitThe red-crested cardinal (Paroaria coronata) feeding on banana fingersChicken feeding injury to banana fruits on the island of Kauai, Hawaii
Fig. 16 magnifying glassFig. 17 magnifying glassFig. 18 magnifying glass
Ant damage to banana fruits via excretion of formic acidAnt damage to banana fruits via excretion of formic acidTermites injury to banana fruit
Fig. 19 magnifying glassFig. 20 magnifying glassFig. 21 magnifying glass

Fig. 16. Bird-feeding injury to banana fruit
Fig. 17. The red-crested cardinal (Paroaria coronata) feeding on banana fingers
Fig. 18. Chicken feeding injury to banana fruits on the island of Kauai, Hawaii
Fig. 19,20. Ant damage to banana fruits via excretion of formic acid
Fig. 21. Termites injury to banana fruit


Further Reading
Control of Roof Rats in Fruit Trees from the University of Florida pdf 5 pages
Rodents and Rodents Control in Hawaii from the University of Hawaii at Manoa Cooperative Extention pdf
Rat Feeding Injury to Plants  from the University of Hawaii at Manoa Cooperative Extention  pdf 10 pages
The Facts about Rats from the US Fish & Wildlife Service, Pacific Islands Publications pdf
Lightning Injury to Plants from the University of Hawaii at Manoa Cooperative Extention pdf 5 pages
Ant Damage to Banana Fruits by Abdominal Secretions from the University of Hawaii at Manoa Cooperative Extention pdf 5 pages





Nutrient Deficiencies

 
Boron

Banana Boron deficiency (mild). Symptom: Leaf rugosity.Boron deficiency of banana
Boron deficiency of banana
Banana: Boron deficiency
Fig. 22 magnifying glass Fig. 23 magnifying glass Fig. 24 magnifying glass Fig. 25 magnifying glass

Boron deficiency symptoms:
Fig. 22. Leaf rugosity
Fig. 23,24. Boron deficiency of banana
Fig. 25. Boron deficiency is expressed at the apical meristem

Calcium
 
Calcium deficiency. Symptom: Yellow stripes perpendicular to leaf veinsBanana: Calcium deficiencyEarly foliar symptoms (yellow stripes parallel to leaf midrib)
Fig. 26 magnifying glass Fig. 27 magnifying glass Fig. 28 magnifying glass
Drooping and slightly chlorotic flag leaf (in severe cases the leaf is white in color with a necrotic tip)Chlorotic (white) and/or necrotic heart leafDrooping, collapsed petioles and a whitish colored cigar leaf (the youngest leaf at the top of the plant)Deformed, curled leaf blades at the apical meristem
Fig. 29 magnifying glass Fig. 30 magnifying glass Fig. 31 magnifying glass Fig. 32 magnifying glass

Calcium deficiency symptoms:
Fig. 26. Yellow stripes perpendicular to leaf veins
Fig. 28. Early foliar symptoms (yellow stripes parallel to leaf midrib)
Fig. 29. Drooping and slightly chlorotic flag leaf (in severe cases the leaf is white in color with a necrotic tip)
Fig. 30. Chlorotic (white) and/or necrotic heart leaf
Fig. 31. Drooping, collapsed petioles and a whitish colored cigar leaf (the youngest leaf at the top of the plant)
Fig. 32. Deformed, curled leaf blades at the apical meristem



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Banana Page


Photographs

Fig. 1 Nelson, Scot C. Leaf rubbing scars. 2011. flickr.com. Under (CC BY-SA 2.0). Web. 17 March 2017.
Fig. 2 Nelson, Scot C. Banana fruit scarring, possibly due to leaf rubbing injury. 2006.. flickr.com. Under (CC BY-SA 2.0). Web. 17 March 2017.
Fig. 3 Nelson, Scot C. Sap scars on banana fruits. 2007.. flickr.com. Under (CC BY-SA 2.0). Web. 17 March 2017.
Fig. 4 Nelson, Scot C. Glyphosate herbicide injury to banana foliage. 2006. flickr.com. Under (CC BY-SA 2.0). Web. 16 March 2017.
Fig. 5 Nelson, Scot C. Banana: Glyphosate herbicide injury. 2013. flickr.com. Under (CC BY-SA 2.0). Web. 16 March 2017.
Fig. 6,78,9 Nelson, Scot C. Lightning injury to banana plants at a farm near Hilo, Hawaii. 2006. flickr.com. Under (CC BY-SA 2.0). Web. 17 March 2017.
Fig. 10 Nelson, Scot C. Rat injuries. 2011. University of Hawaii at Manoa. flickr.com. Under (CC BY-SA 2.0). Web. 16 March 2017.
Fig. 11 Rat feeding injury to unripe banana fruits. 2011. flickr.com. Under (CC BY-SA 2.0). Web. 16 March 2017.
Fig. 12 Kepler, Angela Kay. Rats feeding injury to plants and crops in Hawaii. 2003. flickr.com. Under (CC BY-SA 2.0). Web. 16 March 2017.
Fig. 13,14 Rat claws scratching injury to banana fruit peels. 2014.Kepler, Angela Kay.
Fig. 15,16 Kepler, Angela Kay. Rats feeding injury to plants and crops in Hawaii. Banana (rats nest). 2007. flickr.com. Under (CC BY-SA 2.0). Web. 17 March 2017.
Fig. 17 Nelson, Scot C. Bird-feeding injury to banana fruit. 2015. flickr.com. Under (CC BY-SA 2.0). Web. 16 March 2017.
Fig. 19 Nelson, Scot C. The red-crested cardinal (Paroaria coronata) feeding on banana fingers. 2015. flickr.com. Under (CC BY-SA 2.0). Web. 17 March 2017.
Fig. 19 Nelson, Scot C. Chicken feeding injury to banana fruits on the island of Kauai, Hawaii. 2014. flickr.com. Under (CC BY-SA 2.0). Web. 17 March 2017.
Fig. 20,21 Nelson, Scot C. Ant damage to banana fruits via excretion of formic acid. 2006. flickr.com. Under (CC BY-SA 2.0). Web. 16 March 2017.
Fig. 22 Nelson, Scot C. Termites injury to banana fruit. Kea'au, Hawaii. 2009. flickr.com. Under (CC BY-SA 2.0). Web. 16 March 2017.
Fig. 22 Cousin, Marisa. Banana Boron deficiency (mild). Symptom: Leaf rugosity. 2014. flickr.com. Under (CC BY-SA 2.0). Web. 16 March 2017.
Fig. 23,24,25 Nelson, Scot C. Boron deficiency of banana. 2004,2005,2006. flickr.com. Under (CC BY-SA 2.0). Web. 16 March 2017.
Fig. 26 Nelson, Scot C. Calcium deficiency of banana. Yellow stripes perpendicular to leaf veins. 2017. flickr.com. Under (CC BY-SA 2.0). Web. 17 March 2017.
Fig. 27 Nelson, Scot C. Banana: Calcium deficiency. 2007. flickr.com. Under (CC BY-SA 2.0). Web. 17 March 2017.
Fig. 28 Nelson, Scot C. Calcium deficiency of banana. Early foliar symptoms (yellow stripes parallel to leaf midrib). flickr.com. Under (CC BY-SA 2.0). Web. 17 March 2017.
Fig. 29 Nelson, Scot C. Calcium deficiency of banana. Symptom: Drooping and slightly chlorotic flag leaf (in severe cases the leaf is white in color with a necrotic tip). 2003. flickr.com. Under (CC BY-SA 2.0). Web. 17 March 2017.
Fig. 30 Nelson, Scot C. Calcium deficiency of banana. Chlorotic (white) and/or necrotic heart leaf. 2003. flickr.com. Under (CC BY-SA 2.0). Web. 17 March 2017.
Fig. 31 Nelson, Scot C. Calcium deficiency of banana. Symptoms: Drooping, collapsed petioles and a whitish colored cigar leaf (the youngest leaf at the top of the plant). 2013. flickr.com. Under (CC BY-SA 2.0). Web. 17 March 2017.
Fig. 32 Nelson, Scot C. Banana: Calcium (Ca) deficiency. Symptom: Deformed, curled leaf blades at the apical meristem. 2016. flickr.com. Under (CC BY-SA 2.0). Web. 17 March 2017.

Published 21 Mar. 2014 LR. Last update 17 Mar. 2017 LR
2013 - growables.org
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