Abstract
The investigation shows that when ammonium sulphate or oil cake was applied to cropped rice soils 4 weeks after transplantation, a considerable amount of the added nitrogen was lost as gas. This loss, however, was less than the loss that took place when the crop was absent. Placement of ammonium sulphate 3 in. below the soil surface reduced the loss of nitrogen, but did not significantly increase the crop yield. Gases evolved from cropped rice soils, whether unmanured or treated with ammonium sulphate, were free from hydrogen and contained practically no methane, while those formed in the uncropped soil under similar treatments contained large volumes of these two gases.
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Claims 5
Claim · model-written summary
Nitrogen gas loss from rice soil was lower with a crop than without it.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This loss, however, was less than the loss that took place when the crop was absent.”
t0“Influence of the rice crop on the loss of nitrogen gas from water-logged soils”
Claim · model-written summary
Placing ammonium sulphate three inches below the soil surface reduced nitrogen loss.
- Taxon
- rice
Oryza sativat0 - Treatment
- Placement of ammonium sulphate 3 in. below the soil surfacee0
- Outcome
- loss of nitrogene0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Placement of ammonium sulphate 3 in. below the soil surface reduced the loss of nitrogen”
t0“rice crop”
Claim · model-written summary
The same fertilizer placement did not significantly increase rice yield.
- Taxon
- riceOryza sativat0
- Treatment
- Placement of ammonium sulphate 3 in. below the soil surfacee0
- Outcome
- crop yielde0
- Direction
- did not significantly increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Placement of ammonium sulphate 3 in. below the soil surface reduced the loss of nitrogen, but did not significantly increase the crop yield”
t0“rice crop”
Claim · model-written summary
Gases from cropped rice soil contained practically no methane and no hydrogen.
- Taxon
- riceOryza sativae0
- Treatment
- ammonium sulphatee0
- Outcome
- free from hydrogen and contained practically no methanee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Gases evolved from cropped rice soils, whether unmanured or treated with ammonium sulphate, were free from hydrogen and contained practically no methane”
Claim · model-written summary
Uncropped soil under similar treatments evolved large volumes of hydrogen and methane.
- Taxon
- riceOryza sativat0
- Treatment
- uncropped soile0
- Outcome
- large volumes of these two gasese0
- Direction
- large volumese0
- Comparator
- free from hydrogen and contained practically no methanee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“those formed in the uncropped soil under similar treatments contained large volumes of these two gases”
e1“free from hydrogen and contained practically no methane”
t0“rice crop”
The same questions in other papers
ammonium sulfate · yield · Oryza sativa (rice)Positive and negative results
8 papers in the same direction as this paper · 26 in the opposite direction
- positive
- positive
- positive
31 papers more in this group
See all 35 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.