Peruna - Chlorosis
Oireet
Plants (right) are stunted and leaves show a uniform chlorotic pale green / yellow colouration
Syyt
Nitrogen deficiency
Sulphur deficiency, root parasites (eg PCN), deep drilling of tubers, nightfrosts, water shortage or heavy metal toxicity can cause similar symptoms.
Peruna - Chlorosis
Oireet
Leaves (right) are stunted and leaves show a uniform chlorotic pale green/yellow colouration
Syyt
Nitrogen deficiency
Sulphur deficiency, root parasites (eg PCN), deep drilling of tubers, nightfrosts, water shortage or heavy metal toxicity can cause similar symptoms.
Peruna - Growth retardation
Oireet
Plants on the left side show uniform pale green leaves and stunted growth. Older leaves usually affected first and these then turn yellow and shed early.
Syyt
Nitrogen deficiency.
Sulphur deficiency, root parasites (eg PCN), deep drilling of tubers, nightfrosts, water shortage or heavy metal toxicity can cause similar symptoms.
Often seen as patches due to poor fertiliser application or soil type
Nitrogen deficiency pahentaa
- Low or high pH soils
- Sandy or light soils (leaching
- ) Low organic matter
- Drought conditions
- High rainfall (leaching) or heavy irrigation
- Addition or high levels of non-decomposed organic matter/manure (eg straw)
- Fast growing crops
Typpi on tärkeä
- Better crop development
- Improved yield
Yaran suosittelemat lannoitteetTyppi
YaraLiva TROPICOTE
Potatoes: 375 to 500 kg/ha at tuber initiation. Exact recommendation depends on soil analysis and variety requirements. Refer to your local Yara area manager for detailed recommendation.
Lue lisää YaraLiva TROPICOTEYaraVita CROPLIFT PRO
Potatoes: 2.5 to 5 kg/ha. Repeat at 10 to 14 day intervals as necessary. Water rate: 200 l/ha.
Lue lisää YaraVita CROPLIFT PROYaraVita SAFE-N 300
Potatoes: 10 to 20 l/ha before tuber set and at onset of flowering. Also, apply 10 to 20 l/ha, if required, following petiole analysis. Water rate: 100 to 200 l/ha.
Lue lisää YaraVita SAFE-N 300CHAFER NUFOL 20
Potatoes: Suitable for foliar application. Apply up to 2x25 l/ha from early to mid tuber bulking. Refer to your local Yara area manager for detailed recommendation.
Lue lisää CHAFER NUFOL 20
