Zinc deficiency-Apples

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Nutrients

Apples - Deformation

Symptoms
Typical symptoms of zinc deficiency are "little leaf" and "rosetting", caused by short internodes. Leafs are small, longish and partly yellow in colour. Often interveinal chlorosis is visible.

Reasons
Severe zinc deficiency

Apples - Shortening of internodes

Symptoms
Typical symptoms of zinc deficiency are "little leaf" and "rosetting", caused by short internodes.

Reasons
Severe zinc deficiency

Zinc deficiency made worse by

Organic soils
High pH soils
Soils rich in phosphorus
Soils receiving high phosphorus application
Cold wet conditions

Zinc is important for

Combats chlorisis and premature leaf fall
Improves resistance to cold weather and late frosts
Improves bud development
Improves flowering
Improves fruit set
Gives better skin finish
Reduces storage disorders

Yara recommended fertilizers for Zinc

YaraVita® ZINTRAC™

Apples: 1 l/ha (0.4 l/acre) at bud burst and at the end of flowering. Avoid treatment during flowering. A further application should be made after harvest but before leaf senescence. On russet-sensitive varieties, delay applications until 6 weeks after flowering. Water rate: 500 to 1,000 l/ha 200 to 400 l/acre). Pommiers: 1 l/ha au débourrement et au fin de la floraison. Eviter l'application pendant la floraison. Appliquer encore après la cueillette avant la sénesence des feuilles. Sur les variétés sensibles au russetting retarder les applications jusqu#à 6 semaines après la chute des pétales. Volume d'eau: 500-1.000 l/ha.

Other recommended products

YaraVita® GLYTREL™ZnP

1 to 2 l/ha at bud burst. Do not apply during flowering. Apply 1 l/ha 6 weeks after fruit set and repeat as necessary at 15 to 21 day intervals until one month before harvest. Also, 1 to 2 l/ha after harvest before leaf senescence. Water rate: 200 to 1000 l/ha.