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® BUD BUILDER™WP
Apples: In the Spring apply 5 to 10 lbs/acre applied at bud burst. Reapply after fruit set during sizing in 10 to 14 day intervals. 5-10 lbs/acre applied post-harvest before leaf senescence. Water rate: minimum 25 gallons/acre. Foliar application of Bud Builder may leave a white residue-deposit on the leaf or crop when applied close to harvest.
Read more about YaraVita® BUD BUILDER™WPYaraVita® POWERBOR™ Ca
Apple: Several applications of 1 to 2 quarts/acre beginning at pink bud, start of flowering, at petal fall, after fruit set and during sizing. Also, after harvest but before leaf senescence. Water rate: 15 gallons per acre minimum.
Read more about YaraVita® POWERBOR™ CaYaraVita® ZINTRAC™
Apples: 1 pint/acre at bud burst to ½ inch green tip. Apply again after harvest but before leaf senescence. Water rate: 50 to 100 gallons/acre.
Read more about YaraVita® ZINTRAC™NUTRA-PHOS CALZINC
Apple: 5 to 25 lb per acre per application. Repeat as needed. Apply aerial applications in at least 5 gallons/acre and ground applications in at least 10 gallons/acre; however, when total application gallonage is 25 gallons per acre or less, DO NOT mix more than 1 lb. of this product per gallon of water.
Read more about NUTRA-PHOS CALZINCNUTRA-PHOS Zn-K PLUS
Apple: 5 to 25 lb per acre per application in pre- and post-bloom sprays. Repeat as needed. Apply aerial applications in at least 5 gallons/acre and ground applications in at least 10 gallons/acre; however, when total application gallonage is 25 gallons per acre or less, DO NOT mix more than 1 lb. of this product per gallon of water.
Read more about NUTRA-PHOS Zn-K PLUSNUTRA-SPRAY MANZINC
Apple: 10 to 30 lb per acre per application at pre-bloom and post-harvest. Apply foliar sprays as needed. In horticultural oil sprays, 3/4 to 1 lb. may be included for each 1% of oil emulsion. Apply aerial applications in at least 5 gallons/acre and ground applications in at least 10 gallons/acre; however, when total application gallonage is 25 gallons per acre or less, DO NOT mix more than 1 lb. of this product per gallon of water.
Read more about NUTRA-SPRAY MANZINCNUTRA-SPRAY ZINC 50 PLUS
Apple: Dormant: Use 6 to 15 lb per acre. May be used with horticultural oil. Delayed Dormant: Use 5 to 10 lb per acre. May be used with horticultural oil. Foliage Spray: Apply at the rate of 2 to 6 lb per acre per application. Repeat as needed. Application of this product as a foliage spray must be made with caution, especially during wet weather or poor drying conditions. Application to fruit within 3 weeks of harvest may leave a visible residue. Post Harvest: 6 to 15 lb per acre. Apply aerial applications in at least 5 gallons/acre and ground applications in at least 10 gallons/acre; however, when total application gallonage is 25 gallons per acre or less, DO NOT mix more than 1 lb. of this product per gallon of water.
Read more about NUTRA-SPRAY ZINC 50 PLUSNUTRA-SPRAY ZM
Apple: 10 to 30 lb per acre per application at pre-bloom and post-harvest. Apply foliar sprays as needed. In horticultural oil sprays, 3/4 to 1 lb. (0.3 to 0.5 kg) may be included for each 1% of oil emulsion. Apply aerial applications in at least 5 gallons/acre and ground applications in at least 10 gallons/acre; however, when total application gallonage is 25 gallons per acre or less, DO NOT mix more than 1 lb. of this product per gallon of water.
Read more about NUTRA-SPRAY ZM