Maize
- Apples
- Barley
- Grapevines
- Grassland
- Lettuce
- Maize
- Oats
- Oilseed Rape
- Plums
- Potatoes
- Raspberries
- Soya bean
- Wheat
Maize - Growth retardation
Symptoms
The cobs of K-deficiency plants are narrowed and peaked. Grains in the cob tips are only poorly filled.
Reasons
Potassium deficiency (cobs at the right side)
Potassium deficiency made worse by
- Acidic soils (low pH)
- Sandy or light soils (leaching)
- Drought conditions
- High rainfall (leaching)
- or heavy irrigation
- Heavy clay (illite) soils
- Soils with low K reserves
- Magnesium rich soils
Potassium is important for
- Healthy, green foliage
- Better root growth
- Increased yields
Yara recommended fertilizers for Potassium
YaraVita CROP BOOST
Maize: 5 l/ha at the 4 to 8 leaf stage. Water rate: 30 to 200 l/ha. N.B. Do not spray in slow drying conditions. Alternatively: 2 to 5 l/ha at the 4 to 6 leaf stage. Repeat 10 to 14 days later if necessary. Water rate: 30 to 200 l/ha
Read more about YaraVita CROP BOOSTYaraVita FOLIAR POTASH
Maize: 5 l/ha at the 4 to 8 leaf stage. Water rate: 200 l/ha.
Read more about YaraVita FOLIAR POTASH
