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Subject
- Brassica napus[remove]1
- Brassica rapa subsp. oleifera1
- Brassica rapa subsp. pekinensis1
- Maine1
- air temperature1
- cold1
- crop yield[remove]1
- dry matter accumulation1
- forage1
- grazing1
- harvest date1
- hybrids1
- interspecific variation[remove]1
- regrowth1
- soil water content1
- sowing date1