Phosphorus deficiency made worse by

  • Acidic or very alkaline (calcareaus) soils
  • Low organic matter
  • Cold or wet conditions
  • Crops with a poorly developed root system
  • Soils with low P reserves
  • Soils with a high phosphate capacity
  • Iron rich soils

Phosphorus is important for

  • Increased number of tubers
  • Produces tubers of uniform size
  • Boosts bulking and increases the yield of tubers
  • Increases tuber dry matter content and starch levels
  • Improves storage potential of tubers and reduces storage diseases

Yara recommended fertilizers for Phosphorus

YaraVita KOMBIPHOS

YaraVita KOMBIPHOS

Potatoes: 10 l/ha. Apply one week after 100 percent crop emergence, and 10 to 14 days later, if necessary. To encourage tuber numbers, apply at tuber initiation. To encourage tuber size, apply at early bulking and repeat at 10 to 14 day intervals as necessary. Water rate: 100 to 200 l/ha.

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YaraVita SENIPHOS

YaraVita SENIPHOS

Potatoes: To increase tuber numbers, 1 application of 10 to 15 L/ha at tuber initiation (stolon hooking). To promote tuber size, 2 to 3 applications of 10 L/ha during bulking. Water rate: 200-500 L/ha.

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YaraMila COMPLEX

YaraMila COMPLEX

potatoes: Applying 500-700 Kg/ha pre-plant or placed at least 8cm away from seed tubers at planting. Apply/Spread 300-350 Kg/ha at Hilling up/Tuber initiation. Refer to Yara crop program @ www.yara.com.au as a guide or contact your local Yara sales agronomist for advice.

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YaraMila UNIVERSAL

YaraMila UNIVERSAL

Potatoes: Apply 400-600 Kg/ha pre-plant or placed at least 8cm away from seed tubers at planting. Refer to Yara crop program @ www.yara.com.au as a guide or contact your local Yara sales agronomist for advice.

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