Sammanfattning

Camelina (Camelina sativa (L.) Crtz., false flax) is described as a species requiring fewer inputs than other oilseed crops thus making it an interesting alternative in sustainable cropping systems. As information on the combined effects of nitrogen and sulphur on camelina yield and quality parameters is meagre, a pot fertilization experiment was carried out with nitrogen applied as NH(4)NO(3) at three increasing rates equivalent to a range from 63 up to 127 kg ha(-1). These treatments were combined with sulphur additions applied as (NH(4))(2)SO(4) to achieve a soil sulphate content of 25 or 45 mg kg(-1), respectively (equivalent to 75 and 135 kg S ha(-1)). The medium and high nitrogen rates combined with the low sulphur fertilization level increased the number of branches per plant compared with the lowest nitrogen fertilization at the same sulphur rate. Camelina seed yield increased with increasing nitrogen doses at the same low sulphur level, whereas straw yield increased only at the highest rate of nitrogen. Thousand-seed mass increased at the highest nitrogen dose and with the low sulphur application rate. In addition, the increase in nitrogen fertilization reduced seed oil content from 39.8% to 37.1%. A highly negative correlation was observed between oil and protein content of seeds. Nitrogen fertilization increased total oil yield and total protein yield. Differences in crop parameters between the sulphur treatments were not significant statistically, although the higher sulphur treatment tended to increase seed yield as well as oil and protein content compared with the low sulphur treatment. Thus, the combined application of N and S as mineral fertilizers is only recommended when growing camelina on sulphur-deficient soils if the aim is to achieve both high oil and protein production.

Nyckelord

Oil content; protein content; seed; straw; TSM; yield

Publicerad i

Acta Agriculturae Scandinavica, Section B - Soil and Plant Science
2011, Volym: 61, nummer: 4, sidor: 313-321
Utgivare: TAYLOR & FRANCIS AS

SLU författare

• Strålenhielm, Anna

  • Institutionen för mark och miljö, Sveriges lantbruksuniversitet
    

Globala målen

SDG2 Avskaffa hunger, uppnå tryggad livsmedelsförsörjning och förbättrad nutrition samt främja ett hållbart jordbruk


UKÄ forskningsämne

Jordbruksvetenskap
Livsmedelsvetenskap


Publikationens identifierare

DOI: https://doi.org/10.1080/09064710.2010.490234

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/46596