Shoots are upright and thin with dull, dark green leaves. Margins of leaves are cupped upward. Growth is stunted.
Phosphorus deficiency (left)
Lateral root development is inhibited. Tuber yield will be reduced.
Phosphorus deficiency (right)
Potatoes: To stimulate early growth: 5 l/ha one week after 100 percent crop emergence. To increase tuber number: 10 l/ha at tuber initiation (when 50 percent at the tip swellings are twice the diameter of the rest of the stolon). To increase tuber size: a minimum of 2 applications of 5 l/ha or 1 to 2 applications of 10 l/ha during tuber bulking ( as soon as first formed tubers are 10mm in diameter) and following petiole analysis during tuber bulking. Allow 10 to 14 days between applications. Water rate: 200 l/ha.Read more about YaraVita MAGPHOS K
Potatoes: For specific rates and timing contact your local Yara stockist.Read more about YaraMila COMPLEX