Abstract
The long-term sustainability of agriculture requires that soil degradation be addressed and that crop production systems that incorporate the benefits of surface residues and standing stubble through conservation tillage practices be evaluated critically. The objective was to study the effects of nitrogen, row spacing and seeding rate on the yield of flax (Linum usitatissimum L.) under zero-till production practices. Three row spacings, six seeding rates and two rates of nitrogen were investigated. The plots were directly seeded into barley stubble under a continuous cropping zero-till production system. When yield levels were > 1200 kg ha −1 , yields were not significantly affected by row spacing, but when yield levels were < 1200 kg ha −1 , the 20-cm row spacing was favored over the 10- or 30-cm spacings. Yields increased linearly with increase in seeding rate at all row spacings. There were no interactions observed between nitrogen, row spacing and seeding rate. The results of this study have important implications in terms of equipment design, cost for zero-till seeding equipment, and the opportunity to easily modify existing equipment for zero-till seeding. Key words: Plant establishment, plant height, zero till, yield
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Claims 4
Claim · model-written summary
At yield levels above 1200 kg ha −1, row spacing did not significantly affect flax yield.
- Taxon
- flax
Linum usitatissimume1 - Treatment
- row spacinge0
- Outcome
- yieldse0
- Qualifier
- yield levels were > 1200 kg ha −1e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When yield levels were > 1200 kg ha −1 , yields were not significantly affected by row spacing”
e1“flax (Linum usitatissimum L.)”
Claim · model-written summary
At yield levels below 1200 kg ha −1, 20-cm spacing was favored over 10- or 30-cm spacing.
- Taxon
- flaxLinum usitatissimume1
- Treatment
- 20-cm row spacinge0
- Outcome
- favorede0
- Direction
- favorede0
- Qualifier
- yield levels were < 1200 kg ha −1e0
- Comparator
- 10- or 30-cm spacingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when yield levels were < 1200 kg ha −1 , the 20-cm row spacing was favored over the 10- or 30-cm spacings”
e1“flax (Linum usitatissimum L.)”
Claim · model-written summary
Flax yield increased linearly as seeding rate increased at every row spacing.
- Taxon
- flaxLinum usitatissimume1
- Treatment
- seeding ratee0
- Outcome
- Yieldse0
- Direction
- increasede0
- Qualifier
- at all row spacingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yields increased linearly with increase in seeding rate at all row spacings”
e1“flax (Linum usitatissimum L.)”
Claim · model-written summary
No interaction was observed among nitrogen, row spacing and seeding rate.
- Taxon
- flaxLinum usitatissimume1
- Outcome
- no interactions observed between nitrogen, row spacing and seeding ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no interactions observed between nitrogen, row spacing and seeding rate”
e1“flax (Linum usitatissimum L.)”
The same questions in other papers
density · yield · Linum usitatissimum (flax)Positive and negative results
14 papers in the same direction as this paper · 30 in the opposite direction
- positive
- positive
- no effect
41 papers more in this group
See all 45 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.