|
| << previous | next >> |
Journal description
All volumes of the corresponding journal
All issues of the corresponding volume
All articles of the corresponding issues
Details for article 5 of 11 found articles
| Title: |
Distribution of Nitrogen between Crop and Weeds in Spring Cereals |
| Author: |
Salonen, Jukka |
| Appeared in: |
Acta agriculturae Scandinavica. Section B, Soil and plant science |
| Paging: | Volume 42 (1992) nr. 4 pages 218-223 |
| Year: |
1992-12-01 |
| Contents: |
The nitrogen content of the above-ground biomass of crop and weeds was assessed one week after crop heading in the beginning of July in spring barley and spring wheat. Crops were sown with a combined sowing and fertilizing machine at five seed rates. The trial plots received nitrogen, 90 kg ha-1. No herbicides were applied. In spring barley sown at a normal seed rate, less than 5% of the nitrogen in the above-ground biomass was accumulated in weeds. In spring wheat stands the corresponding amount averaged 10-15%. The nitrogen concentration in the crop biomass averaged 1.8% of the dry weight and that in mixed weed species 3.2%. Under normal growth conditions the N concentration in crop and weeds was relatively constant at the time of crop heading. Variations in N accumulation between crop plants and weeds are explained by the different biomass production of the plants. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 5 of 11 found articles
| << previous | next >> |