Boron deficiency - Raspberries

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Nutrients

Raspberries - Chlorosis

Symptoms
Stunted growth, misshapen leaves, poor fruit set. Mature leaves show interveinal chlorosis with subsequent scorching of canes. Splitting of stems may occur occasionally.

Reasons
Boron deficiency Boron deficiency can also be induced by low water uptake or other nutrients such us Ca, K, N or P. Leaf levels of 20-80ppm are normal. Oversupply may cause B toxicity.

Raspberries - Chlorosis

Symptoms
Stunted growth, misshapen leaves, poor fruit set. Mature leaves show interveinal chlorosis with subsequent scorching of canes. Splitting of stems may occur occasionally.

Reasons
Boron deficiency Boron deficiency can also be induced by low water uptake or other nutrients such us Ca, K, N or P. Leaf levels of 20-80ppm are normal. Oversupply may cause B toxicity.

Raspberries - Chlorosis

Symptoms
Stunted growth, misshapen leaves, poor fruit set. Mature leaves show interveinal chlorosis with subsequent scorching of canes. Splitting of stems may occur occasionally.

Reasons
Boron deficiency Boron deficiency can also be induced by low water uptake or other nutrients such us Ca, K, N or P. Leaf levels of 20-80ppm are normal. Oversupply may cause B toxicity.

Raspberries - Chlorosis

Symptoms
Stunted growth, misshapen leaves, poor fruit set. Mature leaves show interveinal chlorosis with subsequent scorching of canes. Splitting of stems may occur occasionally.

Reasons
Boron deficiency Boron deficiency can also be induced by low water uptake or other nutrients such us Ca, K, N or P. Leaf levels of 20-80ppm are normal. Oversupply may cause B toxicity.

Raspberries - Chlorosis

Symptoms
Stunted growth, misshapen leaves, poor fruit set. Mature leaves show interveinal chlorosis with subsequent scorching of canes. Splitting of stems may occur occasionally.

Reasons
Boron deficiency Boron deficiency can also be induced by low water uptake or other nutrients such us Ca, K, N or P. Leaf levels of 20-80ppm are normal. Oversupply may cause B toxicity.

Raspberries - Deformation

Symptoms
Stunted growth, misshapen leaves, poor fruit set. Mature leaves show interveinal chlorosis with subsequent scorching of canes. Splitting of stems may occur occasionally.

Reasons
Boron deficiency Boron deficiency can also be induced by low water uptake or other nutrients such us Ca, K, N or P. Leaf levels of 20-80ppm are normal. Oversupply may cause B toxicity.

Raspberries - Cracking

Symptoms
Stunted growth, misshapen leaves, poor fruit set. Mature leaves show interveinal chlorosis with subsequent scorching of canes. Splitting of stems may occur occasionally.

Reasons
Boron deficiency Boron deficiency can also be induced by low water uptake or other nutrients such us Ca, K, N or P. Leaf levels of 20-80ppm are normal. Oversupply may cause B toxicity.

Raspberries - Chlorosis

Symptoms
Stunted growth, misshapen leaves, poor fruit set. Mature leaves show interveinal chlorosis with subsequent scorching of canes. Splitting of stems may occur occasionally.

Reasons
Boron deficiency (right) Boron deficiency can also be induced by low water uptake or other nutrients such us Ca, K, N or P. Leaf levels of 20-80ppm are normal. Oversupply may cause B toxicity.

Boron deficiency made worse by

Sandy soils
Alkaline soils
Soils low in organic matter
High levels of nitrogen
High levels of calcium
Cold wet weather
Periods of drought

Boron is important for

Improves bud development
Improves flowering
Improves fruit set

Yara recommended fertilizers for Boron

YaraVita BORTRAC 150

Raspberry (field grown): Two applications of 1 l/ha applied at green bud and white bud. Also, 2 l/ha post-harvest. Water rate: 200 to 500 l/ha. Raspberry (protected crops): Two applications 0.1 litres per 100 litres water maximum concentration. Applied at green bud and white bud, also post-harvest. Water rate: 1000 l/ha maximum.