Abstract
ABSTRACT The excess of salts can affect several processes in the crops, and nitrogen (N) can attenuate the depressive effect of salinity. The objective was to evaluate the influence of nitrogen doses on the growth and gas exchange of corn crop irrigated with saline water. The experiment was conducted from June to September 2019 at the University of International Integration of Afro-Brazilian Lusophony, Redenção, CE, Brazil. The experimental design was completely randomized, in a 2 x 3 factorial scheme (supply water of 0.3 dS m-1 and saline solution of 3.0 dS m-1) and three nitrogen doses, 0, 80, and 160 kg ha-1, corresponding to 0, 50, and 100% of the recommended dose respectively, with six repetitions. At 30 and 45 days after sowing (DAS), plant height, leaf area, number of leaves, photosynthesis, transpiration, and stomatal conductance were evaluated. Saline stress affects plant height, leaf area, photosynthesis, transpiration, and conductance at 30 DAS. The doses of 80 and 160 kg ha-1 provide greater performance in plant height, leaf area, photosynthesis, transpiration, and conductance at 30 DAS. The use of low salinity water and doses of 80 and 160 kg ha-1 were more efficient in terms of plant height, leaf area, photosynthesis, transpiration, and conductance at 45 DAS. The dose of 160 kg ha-1 of N attenuates the harmful effects of salts in AG 1051 hybrid maize plants, providing higher values of photosynthesis, transpiration, and stomatal conductance at 45 DAS when irrigated with water of 3.0 dS m-1.
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Claims 4
Claim · model-written summary
Salinity affected height, leaf area, photosynthesis, transpiration, and conductance at 30 DAS.
- Taxon
- corn
Zea mays subsp. mayst0 - Treatment
- Saline stresse0
- Outcome
- plant height, leaf area, photosynthesis, transpiration, and conductancee0
- Qualifier
- 30 DASe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Saline stress affects plant height, leaf area, photosynthesis, transpiration, and conductance at 30 DAS”
t0“corn”
Claim · model-written summary
Nitrogen at 80 or 160 kg ha-1 improved growth and gas exchange at 30 DAS.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- 80 and 160 kg ha-1e0
- Outcome
- plant height, leaf area, photosynthesis, transpiration, and conductancee0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The doses of 80 and 160 kg ha-1 provide greater performance in plant height, leaf area, photosynthesis, transpiration, and conductance at 30 DAS”
t0“corn”
Claim · model-written summary
Low salinity water with 80 or 160 kg ha-1 nitrogen was more efficient for growth and gas exchange at 45 DAS.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- low salinity water and doses of 80 and 160 kg ha-1e0
- Outcome
- plant height, leaf area, photosynthesis, transpiration, and conductancee0
- Direction
- more efficiente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of low salinity water and doses of 80 and 160 kg ha-1 were more efficient in terms of plant height, leaf area, photosynthesis, transpiration, and conductance at 45 DAS”
t0“corn”
Claim · model-written summary
Under saline irrigation, 160 kg ha-1 nitrogen improved photosynthesis, transpiration, and conductance at 45 DAS in AG 1051 maize.
- Material
- AG 1051e0
- Treatment
- 160 kg ha-1 of Ne0
- Outcome
- photosynthesis, transpiration, and stomatal conductancee0
- Direction
- highere0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dose of 160 kg ha-1 of N attenuates the harmful effects of salts in AG 1051 hybrid maize plants, providing higher values of photosynthesis, transpiration, and stomatal conductance at 45 DAS when irrigated with water of 3.0 dS m-1”
The same questions in other papers
salinity · physiology: photosynthesis · Zea mays (maize)Results differ
58 in the opposite direction
- negative
- negative
- negative
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