Abstract
Abstract There are conflicting reports on the amount of N transferred from legumes to intercropped nonlegumes and on the need for N fertilizer to obtain high total dry matter yields on soil with low N availability. This study evaluates (i) the ability of fababean ( Vicia faba L.) to meet its N requirements from biological N 2 fixation: (ii) the amount of N transferred to intercropped oat ( Avena sativa L.); and (iii) N fertilizer management to maximize dry matter production and N 2 fixation in a cold soil. A randomized complete block experimental design with four replications was used with two rows of fababean alternating with two rows of oat. Urea was applied in bands between fababean or oat rows at 90 kg N ha −1 to get the following treatments: (i) oat with added N (+N), fababean +N, inoculated with Rhizobium leguminosarum bv. viceae (+I); (ii) oat +N, fababean without added N, inoculated (−N, +I); (iii) oat −N, fababean −N,+I; (iv) oat −N, fababean +N,−I; and (v) oat −N, fababean −N, + I. A second study compared uptake of 15 N‐depleted fertilizer by oat and fababean, where the fertilizer was broadcast over the plot or band‐applied between rows of oat and fababean planted in alternate rows. Less than 1% of the uninoculated fababean plants nodulated in either experiment; thus, they were a good check for estimating N 2 fixation using the difference method. Nitrogen fertilizer increased dry matter production of fababean in some years, but did not increase N uptake. There was little evidence of N transfer from fababean to oat. Oat depended on N fertilizer for maximum dry matter production 3 of the 4 yr. Maximum total dry matter production was achieved by fertilizing the oat and not the fababean in 3 of the 4 yr. The amount of N 2 fixed by fababean averaged 50 kg N ha −1 . Fababean plants obtained >50% of their N from broadcast urea, but <10% when urea was banded between oat and fababean rows. Configuring a commercial drill to band fertilizer between pairs of oat rows alternating with fababean is a practical way to maximize both N 2 fixation and total dry matter production.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 10
Claim · model-written summary
N fertilizer increased fababean dry matter production in some years.
- Taxon
- fababean
Vicia fabae1 - Treatment
- Nitrogen fertilizere1
- Outcome
- dry matter productione1
- Direction
- increasede1
- Qualifier
- in some yearse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Nitrogen fertilizer increased dry matter production of fababean in some years, but did not increase N uptake”
Claim · model-written summary
N fertilizer did not increase N uptake by fababean.
- Taxon
- fababeanVicia fabae1
- Treatment
- Nitrogen fertilizere1
- Outcome
- N uptakee1
- Direction
- did not increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Nitrogen fertilizer increased dry matter production of fababean in some years, but did not increase N uptake”
Claim · model-written summary
Little evidence was found of N transfer from fababean to oat.
- Taxon
- fababeanVicia fabae1
- Outcome
- N transfer from fababean to oate1
- Qualifier
- little evidencee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“There was little evidence of N transfer from fababean to oat”
Claim · model-written summary
Oat depended on N fertilizer for maximum dry matter production in 3 of 4 years.
- Taxon
- Oat
Avena sativae1 - Treatment
- N fertilizere1
- Outcome
- maximum dry matter productione1
- Direction
- maximume1
- Qualifier
- 3 of the 4 yre1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Oat depended on N fertilizer for maximum dry matter production 3 of the 4 yr”
Claim · model-written summary
Maximum total dry matter production was achieved by fertilizing the oat and not the fababean in 3 of 4 years.
- Taxon
- Oat and FababeanVicia fabaAvena sativat0
- Treatment
- fertilizing the oat and not the fababeane1
- Outcome
- maximum total dry matter productione1
- Direction
- Maximume1
- Qualifier
- 3 of the 4 yre1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Intercropped Oat and Fababean”
e1“Maximum total dry matter production was achieved by fertilizing the oat and not the fababean in 3 of the 4 yr”
Claim · model-written summary
Fababean fixed 50 kg N ha−1 on average.
- Taxon
- fababeanVicia fabae1
- Outcome
- N2 fixede1
- Value
- 50 kg N ha −1e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The amount of N2 fixed by fababean averaged 50 kg N ha −1”
Claim · model-written summary
Fababean plants obtained more than 50% of their N from broadcast urea.
- Taxon
- FababeanVicia fabae1
- Treatment
- broadcast ureae1
- Outcome
- N from broadcast ureae1
- Value
- >50%e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Fababean plants obtained >50% of their N from broadcast urea”
Claim · model-written summary
Fababean obtained less than 10% of its N from urea banded between oat and fababean rows, compared with broadcast urea.
- Taxon
- FababeanVicia fabae1
- Treatment
- banded between oat and fababean rowse2
- Outcome
- their Ne1
- Direction
- lowerinferrede2
- Value
- <10%e2
- Comparator
- broadcast ureae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Fababean plants obtained >50% of their N from broadcast urea”
e2“but <10% when urea was banded between oat and fababean rows”
Claim · model-written summary
Less than 1% of uninoculated fababean plants nodulated.
- Taxon
- fababeanVicia fabae1
- Outcome
- nodulatede1
- Value
- Less than 1%e1
- Qualifier
- uninoculatede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Less than 1% of the uninoculated fababean plants nodulated in either experiment”
Claim · model-written summary
Banding fertilizer between pairs of oat rows alternating with fababean is a practical way to maximize N2 fixation and total dry matter production.
- Taxon
- Oat and FababeanVicia fabaAvena sativat0
- Treatment
- band fertilizer between pairs of oat rows alternating with fababeane1
- Outcome
- N2 fixation and total dry matter productione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Intercropped Oat and Fababean”
e1“Configuring a commercial drill to band fertilizer between pairs of oat rows alternating with fababean is a practical way to maximize both N2 fixation and total dry matter production”
The same questions in other papers
Vicia faba · yield · Avena sativa (oats)Positive and negative results
1 in the opposite direction
- negative
fertilization · nutrient: content · Vicia faba (faba bean)Positive and negative results
6 papers in the same direction as this paper · 54 in the opposite direction
- positive
- positive
- positive
57 papers more in this group
See all 61 papers →fertilization · yield · Avena sativa (oats)Positive and negative results
142 papers in the same direction as this paper · 15 in the opposite direction · 2 reporting no difference from an alternative
- no effect
- negative
- no effect
156 papers more in this group
See all 160 papers →fertilization · yield · Vicia faba (faba bean)Positive and negative results
158 papers in the same direction as this paper · 17 in the opposite direction
- no effect
- no effect
- no effect
172 papers more in this group
See all 176 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.