Organic Fertilization of Red Raspberry cv.

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Organic Fertilization of Red Raspberry cv.
Glen Ample, in Polyethylene Tunnels in
NorwayBy 

• Rolf Nestby Norwegian Institute for Agricultural
  and Environmental Research, Grasland and
  Landscape Division, Kvithamar, 7500 Stjørdal,
  Norway. Ingrid Myrstad The Norwegian
  Agricultural Extension Service (LFR), 9410
  Borkenes, Norway.

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Challenges and frames of the project

• Experiments in fields at 62 , 65 and 68 N
• These fields have very different soils.
• Challenge to cover nutrient needs with organic
  fertilizers, especially considering fertigation.
• Project period 2007 to 2010.
• Financed by the Norwegian Research Council
• Fertilization is one of four objectives of the
  project.

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The field at 62 N , Innvik, Norway

• Mineral soil - pH 5.7
• P-K-Mg-Ca 23.9 5.2 7.2 107 (Al-methode)

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The field at 65 N , Brønnøysund, Norway

• Mineral soil pH 7.7 (sandy loam)
• P-K-Mg-Ca 12 10 330 9000

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The field at 68N, Harstad, Norway.

• Mineral soil with 40 organic matter
• P-k-Mg-Ca 44-29 33-12 76- 67 426-369

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Potassium deficiency at 68 N

• Summer 2007

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Management

• Fertilizers

• Levels of N

• Agromarin Based on organic material from Marin
  and Agriculture sources. (6.5- 4-4)
• Marihøne Pluss Based on bone powder and vinasse
  (8-3-3).
• OASE for fertigation (8-4-6)

• 9, 13,17
• Other macro nutrients are balanced to level of N.
• Solid fertilizer are given in spring and mid
  summer.
• Fertigation from mid summer to end of harvest.

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Conclusion

• Registrations in 2007 showed small effects in
  growth and yield.
• Deficiency symptoms observed in two fields (K,
  Mn, Fe).
• Only one field was fully grown in 2007.
• The experiments 2008-2010 will be better
  balanced.
• Testing of fertilizers for fertigation will be
  undertaken