Sammanfattning

The objective of the present work was to investigate the effect of phosphorus fertilization on yield and phosphorus uptake and to compare the phosphorus efficiency for six potato varieties. During 2011 and 2012, field experiments were conducted on soils containing low levels of available phosphorus. Phosphorus fertilizer was added in the amounts of 0, 30 and 60 kg phosphorus per ha. In 2011, soil heterogeneity was large and tuber yield was increased by phosphorus addition only as a mean over all varieties. In 2012, an improved tuber yield by phosphorus fertilization was observed for most varieties. The weight of the larger tuber fractions was generally increased by phosphorus fertilization. Phosphorus efficiency, calculated as tuber dry weight per unit of fertilizer phosphorus added, tended to be higher for late than for early or intermediate varieties. The results indicate that late varieties might be more suitable than earlier varieties for locations were the risk of nutrient losses is high.

Publicerad i

ISBN: 978-80-86940-52-6
Utgivare: Potato Research Institute Havlíčkův Brod

Konferens

Potato Agrophysiology 2013, 2nd International Symposium on Agronomy and Physiology of Potato

SLU författare

• Caspersen, Siri

  • Institutionen för biosystem och teknologi, Sveriges lantbruksuniversitet
    

• Ekelöf, Joakim

  • Institutionen för biosystem och teknologi, Sveriges lantbruksuniversitet
    

• Carlson-Nilsson, Ulrika

  • Institutionen för växtförädling, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Jordbruksvetenskap
Trädgårdsvetenskap/hortikultur


Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/53455