Calcium deficiency-Tomato | Yara United States

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Nutrients

Tomato - Discolouration

Symptoms
Light case of Blossom End Rot (BER). More severely affected plants show a dark, sunken zone on the blossom end of the ripened fruit. This zone is sharply delimited against the fruit. The fruits ripen prematurely and are not marketable.

Reasons
Calcium deficiency on the fruit, also called blossom-end rot (BER). BER develops in fruits that contain less than 0.08% Ca (healthy fruit contains 0.12-0.25 % Ca) . Water deficiency and therefore limited Ca support to the fruit may also be a cause of BER.

Tomato - Rot

Symptoms
Affected plants show a dark, sunken zone on the blossom end of the ripened fruit. This zone is sharply delimited against the fruit. The fruits ripen prematurely and are not marketable.

Calcium deficiency made worse by

Acidic soils
Sandy or light soils (leaching)
Acid peat soils
Soils rich in sodium
Soils rich in aluminium
Drought conditions
Fruit high in nitrogen or potassium
Large fruit

Calcium is important for

Cell division
Cell elongation
Proper working of cell membranes
Permeability of cell membranes

Yara recommended fertilizers for Calcium

YaraLiva® CALCINIT™15.5-0-0

Tomato (field grown): Apply 600-1200 lbs YaraLiva® Calcinit® 15.5-0-0 19 Ca/acre in split applications according to variety, yield potential, and soil test. Utilizing YaraLiva® Calcinit® for part or all of the nitrogen needs supplies the crop with fast acting nitrate nitrogen and will provide soluble calcium in proper ratio with nitrate nitrogen. Calcium is important for producing firm fleshed fruit as well as preventing disorders such as blossom end rot. Consult with your agronomist for local recommendations.

Read more about YaraLiva® CALCINIT™15.5-0-0

YaraLiva® CAN-17™

Tomato (field grown): Apply up to 575-1150 lbs YaraLiva® CAN-17/acre in split applications via fertigation according to variety, yield potential, and soil test. Utilizing YaraLiva® CAN-17 for part or all of the nitrogen needs supplies the crop with fast acting nitrate nitrogen and since CAN-17 contains 8.8% Calcium it will provide soluble calcium in proper ratio with nitrate nitrogen. Calcium is important for producing firm fleshed fruit as well as preventing disorders such as blossom end rot. Consult with your agronomist for local recommendations.

YaraLiva® CN-9®

Tomato (field grown): Apply up to 1000-2000 lbs YaraLiva® CN-9® 9-0-0 11 Ca/acre in split applications via fertigation according to variety, yield potential, and soil test. Utilizing YaraLiva® CN-9® for part or all of the nitrogen needs supplies the crop with fast acting nitrate nitrogen and will provide soluble calcium in proper ratio with nitrate nitrogen. Calcium is important for producing firm fleshed fruit as well as preventing disorders such as blossom end rot. Consult with your agronomist for local recommendations.

YaraLiva® TROPICOTE®

Tomato (field grown): Apply 600-1200 lbs YaraLiva® Tropicote® 15.5-0-0 19 Ca/acre in split applications according to variety, yield potential, and soil test. Utilizing YaraLiva® Tropicote® for part or all of the nitrogen needs supplies the crop with fast acting nitrate nitrogen and will provide soluble calcium in proper ratio with nitrate nitrogen. Calcium is important for producing firm fleshed fruit as well as preventing disorders such as blossom end rot. Consult with your agronomist for local recommendations.

YaraVita® CALTRAC™

Tomatoes (field grown): Repeat applications of 1-2 quarts/acre from the 4 to 6 leaf stage. Allow 7 days between applications. Note: Late applications may leave a deposit on the crop. Water rate: 5 to 50 gallons/acre.

YaraVita® POWERBOR™ Ca

Tomato (field grown): 1 to 2 quarts/acre when plants are at 4 to 6 leaf stage. Repeat if necessary at 10 days intervals. Water rate: 5 to 50 gallons/acre.

Read more about YaraVita® POWERBOR™ Ca

YaraVita® STOPIT™

Tomato (field grown): Applications of 1-2 quarts/acre commencing from flowering on second truss. Allow 7 days between applications. Water rate: 5 to 50 gallons/acre.

NUTRA-PHOS CALZINC

Tomato (field grown): 3 to 10 lb. per acre per application. One to three applications are advised at 3 to 4 week intervals, starting at period prior to bloom. 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.