Abstract
1. Results of field experiments indicate that it is more efficient and effective to apply nitrogen to the crop than to previous crop residues months ahead of planting the crop. 2. The increase in water infiltration rate resulting from various green manures or crop residues was inversely related to the nitrogen content at the time of incorporation. Low-nitrogen residues had a longer-lasting effect than legumes or other high-nitrogen residues. 3. The beneficial effect of barley crop residues on infiltration was significantly reduced by nitrogen application to the residue. 4. Addition of straw, along with fertilizer nitrogen, greatly reduced the uptake of fertilizer nitrogen by the succeeding crops. 5. The time required for cycling fertilizer nitrogen through the soil organic fraction and back into available form apparently involves a matter of years, or perhaps decades, rather than weeks or months. 6. Fine shredding and early incorporation of crop residues into a moist soil are key factors in handling residues to avoid interference with planting operations.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-sa. 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 7
Claim · model-written summary
Nitrogen application to the crop was more efficient and effective than application to prior residues.
Verbatim
e0“more efficient and effective to apply nitrogen to the crop than to previous crop residues months ahead of planting the crop”
Claim · model-written summary
Infiltration increase from residues was inversely related to residue nitrogen content.
Verbatim
e0“The increase in water infiltration rate resulting from various green manures or crop residues was inversely related to the nitrogen content at the time of incorporation”
t0“fertilize crop”
Claim · model-written summary
Low-nitrogen residues had a longer-lasting effect than high-nitrogen residues.
Verbatim
e0“Low-nitrogen residues had a longer-lasting effect than legumes or other high-nitrogen residues”
t0“fertilize crop”
Claim · model-written summary
Nitrogen application to barley residue significantly reduced its beneficial infiltration effect.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- nitrogen application to the residuee0
- Outcome
- effect of barley crop residues on infiltratione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“beneficial effect of barley crop residues on infiltration was significantly reduced by nitrogen application to the residue”
Claim · model-written summary
Straw with fertilizer nitrogen greatly reduced fertilizer nitrogen uptake by subsequent crops.
- Taxon
- cropse0
- Treatment
- Addition of straw, along with fertilizer nitrogene0
- Outcome
- uptake of fertilizer nitrogene0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“Addition of straw, along with fertilizer nitrogen, greatly reduced the uptake of fertilizer nitrogen by the succeeding crops”
Claim · model-written summary
Fertilizer nitrogen cycling through soil organic matter apparently takes years or decades.
- Outcome
- time required for cycling fertilizer nitrogen through the soil organic fraction and back into available forme0
- Value
- years, or perhaps decadese0
- Comparator
- weeks or monthse0
Not reportedTaxon
Verbatim
e0“time required for cycling fertilizer nitrogen through the soil organic fraction and back into available form apparently involves a matter of years, or perhaps decades, rather than weeks or months”
Claim · model-written summary
Fine shredding and early incorporation of residues into moist soil are recommended to avoid planting interference.
Verbatim
e0“Fine shredding and early incorporation of crop residues into a moist soil are key factors in handling residues to avoid interference with planting operations”
t0“fertilize crop”
The same questions in other papers
nitrogen · soil: physics · Hordeum vulgare (barley)Positive and negative results
5 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 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.