Abstract
A field experiment was conducted at Agro Climate Research Center, Rajendranagar, Hyderabad, India during post monsoon season of 2019-20 with an objective to optimize the nitrogen dose under varied degrees of water stress environment. The experiment was laid out in split plot design replicated thrice with three irrigation scheduling (60%DASM, 40%DASM and 20%DASM) as main plots and three nitrogen levels (90, 180 and 240 kg of nitrogen ha-1) as sub plots. The results indicated that, at 20% DASM, with increasing nitrogen dose from 90 to180 and further 240 kg ha-1, the plant height and biomass increased significantly. Whereas a significant response in terms of the LAI, number of grains row-1, grain and stover yields and nitrogen uptake by plant was observed up to 180 kg N ha-1.Under deficit soil moisture condition (60% DASM) the maximum plant height (141.5cm), LAI (2.93), biomass (222.3 g plant-1), number of grains row-1 (35.3) test weight (24.1 g), grain yield (4930 kg ha-1), stover yields (7996kg ha-1) and nitrogen uptake by plant was recorded with low nitrogen dose of 90 kg N ha-1 and all these parameters were decreased with increasing nitrogen dose. The concentration of nitrogen in leaf, stem and grain was more under deficit soil moisture condition (60% DASM) and was decreased with reliving plant water stress by scheduling irrigation at 40% DASM and 20% DASM. This investigation evidences the need of nitrogen optimization under varied degree of moisture availability. Under deficit irrigated situation, lower dose of nitrogen is sufficient for optimum yield. Whereas under sufficient water availability, the beneficial effect increased nitrogen levels can be exploited for higher grain yield in maize.
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Claims 14
Claim · model-written summary
At 20% DASM, increasing nitrogen significantly increased plant height and biomass.
- Treatment
- increasing nitrogen dose from 90 to180 and further 240 kg ha-1e0
- Outcome
- plant height and biomasse0
- Direction
- increasede0
- Setting
- 20% DASMe0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at 20% DASM, with increasing nitrogen dose from 90 to180 and further 240 kg ha-1, the plant height and biomass increased significantly”
t0“Maize”
Claim · model-written summary
At 20% DASM, leaf area index, grains per row, yields and nitrogen uptake responded significantly up to 180 kg N ha-1.
- Treatment
- 180 kg N ha-1e0
- Outcome
- LAI, number of grains row-1, grain and stover yields and nitrogen uptake by plante0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a significant response in terms of the LAI, number of grains row-1, grain and stover yields and nitrogen uptake by plant was observed up to 180 kg N ha-1”
t0“Maize”
Claim · model-written summary
Under 60% DASM, plant height peaked at 141.5cm with 90 kg N ha-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum plant height (141.5cm), LAI (2.93), biomass (222.3 g plant-1), number of grains row-1 (35.3) test weight (24.1 g), grain yield (4930 kg ha-1), stover yields (7996kg ha-1) and nitrogen uptake by plant was recorded with low nitrogen dose of 90 kg N ha-1”
t0“Maize”
Claim · model-written summary
Under 60% DASM, leaf area index peaked at 2.93 with 90 kg N ha-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum plant height (141.5cm), LAI (2.93), biomass (222.3 g plant-1), number of grains row-1 (35.3) test weight (24.1 g), grain yield (4930 kg ha-1), stover yields (7996kg ha-1) and nitrogen uptake by plant was recorded with low nitrogen dose of 90 kg N ha-1”
t0“Maize”
Claim · model-written summary
Under 60% DASM, biomass peaked at 222.3 g plant-1 with 90 kg N ha-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum plant height (141.5cm), LAI (2.93), biomass (222.3 g plant-1), number of grains row-1 (35.3) test weight (24.1 g), grain yield (4930 kg ha-1), stover yields (7996kg ha-1) and nitrogen uptake by plant was recorded with low nitrogen dose of 90 kg N ha-1”
t0“Maize”
Claim · model-written summary
Under 60% DASM, grains per row peaked at 35.3 with 90 kg N ha-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum plant height (141.5cm), LAI (2.93), biomass (222.3 g plant-1), number of grains row-1 (35.3) test weight (24.1 g), grain yield (4930 kg ha-1), stover yields (7996kg ha-1) and nitrogen uptake by plant was recorded with low nitrogen dose of 90 kg N ha-1”
t0“Maize”
Claim · model-written summary
Under 60% DASM, test weight peaked at 24.1 g with 90 kg N ha-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum plant height (141.5cm), LAI (2.93), biomass (222.3 g plant-1), number of grains row-1 (35.3) test weight (24.1 g), grain yield (4930 kg ha-1), stover yields (7996kg ha-1) and nitrogen uptake by plant was recorded with low nitrogen dose of 90 kg N ha-1”
t0“Maize”
Claim · model-written summary
Under 60% DASM, grain yield peaked at 4930 kg ha-1 with 90 kg N ha-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum plant height (141.5cm), LAI (2.93), biomass (222.3 g plant-1), number of grains row-1 (35.3) test weight (24.1 g), grain yield (4930 kg ha-1), stover yields (7996kg ha-1) and nitrogen uptake by plant was recorded with low nitrogen dose of 90 kg N ha-1”
t0“Maize”
Claim · model-written summary
Under 60% DASM, stover yield peaked at 7996kg ha-1 with 90 kg N ha-1.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum plant height (141.5cm), LAI (2.93), biomass (222.3 g plant-1), number of grains row-1 (35.3) test weight (24.1 g), grain yield (4930 kg ha-1), stover yields (7996kg ha-1) and nitrogen uptake by plant was recorded with low nitrogen dose of 90 kg N ha-1”
t0“Maize”
Claim · model-written summary
Under 60% DASM, nitrogen uptake was highest with 90 kg N ha-1.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“stover yields (7996kg ha-1) and nitrogen uptake by plant was recorded with low nitrogen dose of 90 kg N ha-1”
t0“Maize”
Claim · model-written summary
Under 60% DASM, these traits decreased with increasing nitrogen dose.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“all these parameters were decreased with increasing nitrogen dose”
t0“Maize”
Claim · model-written summary
Leaf, stem and grain nitrogen concentration was higher at 60% DASM and fell with more irrigation.
- Treatment
- scheduling irrigation at 40% DASM and 20% DASMe0
- Outcome
- concentration of nitrogen in leaf, stem and graine0
- Direction
- decreasede0
- Comparator
- deficit soil moisture condition (60% DASM)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentration of nitrogen in leaf, stem and grain was more under deficit soil moisture condition (60% DASM) and was decreased with reliving plant water stress by scheduling irrigation at 40% DASM and 20% DASM.”
t0“Maize”
Claim · model-written summary
Under deficit irrigation, a lower nitrogen dose is sufficient for optimum yield.
- Outcome
- lower dose of nitrogen is sufficient for optimum yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under deficit irrigated situation, lower dose of nitrogen is sufficient for optimum yield.”
t0“Maize”
Claim · model-written summary
With sufficient water, higher nitrogen can increase maize grain yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under sufficient water availability, the beneficial effect increased nitrogen levels can be exploited for higher grain yield in maize”
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See all 2,185 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.