Abstract
The aim of this research was to evaluate two traditional N sources (urea and ammonium sulfate) and an alternative one (sulfamoo) with increasing rates (0, 40, 80, 120 and 160 kg N ha-1, respectively) affecting aspects of upland rice crop cv. IAPAR 117. The experiment was carried out in greenhouse conditions, using a completely randomized design in 3x4 factorial scheme, with four replicates. It was evaluated the number of tillers (NT), plant mean height (PMH), dry matter of shoots (DMS), crop yield/mass of filled grains (MFG), content of N-DMS, agronomic efficiency of nitrogen (AE), mass of 100 filled grains (M100FG) and grain harvest index (GHI). The nitrogen rates application as ammonium sulfate resulted in a greater increasing of NT, DMS, MFG and N-DMS, respectively. In fact, higher agronomic efficiency obtained with urea and sulfamoo at 40 kg N. ha-1, although AE decreased within the higher rates of N, independently from the source. The M100FG and GHI were higher when sulfamoo and urea were used, although the high N supply negatively affected these two variables for all N evaluated sources.
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Claims 2
Claim · model-written summary
Ammonium sulfate gave a greater increase in tiller number, shoot dry matter and mass of filled grains.
- Taxon
- upland rice
Oryza sativae0 - Material
- cv. IAPAR 117e0
- Treatment
- ammonium sulfatee2
- Outcome
- NT, DMS, MFGe2
- Direction
- greater increasinge2
- Setting
- greenhouse conditionse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“affecting aspects of upland rice crop cv. IAPAR 117”
e1“The experiment was carried out in greenhouse conditions”
e2“The nitrogen rates application as ammonium sulfate resulted in a greater increasing of NT, DMS, MFG and N-DMS, respectively”
Claim · model-written summary
Ammonium sulfate gave a greater increase in N content of shoot dry matter (N-DMS).
- Taxon
- upland riceOryza sativae0
- Material
- cv. IAPAR 117e0
- Treatment
- ammonium sulfatee2
- Outcome
- N-DMSe2
- Direction
- greater increasinge2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“affecting aspects of upland rice crop cv. IAPAR 117”
e2“The nitrogen rates application as ammonium sulfate resulted in a greater increasing of NT, DMS, MFG and N-DMS, respectively”
The same questions in other papers
ammonium sulfate · yield · Oryza sativa (rice)Positive and negative results
25 papers in the same direction as this paper · 3 in the opposite direction · 6 reporting no difference from an alternative
- positive
- no effect
- no effect
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.