Abstract
A field experiment was conducted during kharif season of 2012 to study the influence of different levels of nitrogen and plant densities on growth and yield parameters of maize. Taller plants were produced by 200 kg N/ha which was statistically at par with the other two treatments of 150 and 250 kg N/ha. Progressive increase in LAI and dry matter production (g/m 2 ) and yield attributes like cob weight (9492 kg/ha), cob girth (14.90 cm), number of rows per cob (14.21), number of grains per row (34.38) and 100-grain weight (30.61 g) was observed due to increased nitrogen levels from 150 to 250 kg/ha and highest cob length (17.82 cm) and shelling percentage (64.79%) were recorded at 200 kg N/ha. Application of 250 kg N/ha produced higher grain and stover yields and also higher net returns than other levels (150 and 200 kg N/ha) but net returns were comparable with 200 kg N/ha. Growth parameters were inconsistent with different spacings. The highest plant height was recorded at a spacing of 75 x 20 cm, maximum leaf area index was recorded at 45 x 20 cm and dry matter production was higher at 60 x 15 cm. However, with regard to yield parameters higher cob yield, grain yield and net returns were obtained at a spacing of 75 x 15 cm.
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Claims 15
Claim · model-written summary
200 kg N/ha produced taller plants, statistically at par with 150 and 250 kg N/ha.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Taller plants were produced by 200 kg N/ha which was statistically at par with the other two treatments of 150 and 250 kg N/ha”
t0“maize”
Claim · model-written summary
LAI and dry matter production increased as nitrogen rose from 150 to 250 kg/ha.
- Treatment
- increased nitrogen levels from 150 to 250 kg/hae0
- Outcome
- LAI and dry matter productione0
- Direction
- Progressive increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Progressive increase in LAI and dry matter production (g/m 2 ) and yield attributes like cob weight (9492 kg/ha), cob girth (14.90 cm), number of rows per cob (14.21), number of grains per row (34.38) and 100-grain weight (30.61 g) was observed due to increased nitrogen levels from 150 to 250 kg/ha”
t0“maize”
Claim · model-written summary
Cob weight rose with nitrogen up to 250 kg/ha, reaching 9492 kg/ha.
- Treatment
- increased nitrogen levels from 150 to 250 kg/hae0
- Outcome
- cob weighte0
- Direction
- Progressive increasee0
- Value
- 9492 kg/hae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Progressive increase in LAI and dry matter production (g/m 2 ) and yield attributes like cob weight (9492 kg/ha), cob girth (14.90 cm), number of rows per cob (14.21), number of grains per row (34.38) and 100-grain weight (30.61 g) was observed due to increased nitrogen levels from 150 to 250 kg/ha”
t0“maize”
Claim · model-written summary
Cob girth rose with nitrogen up to 250 kg/ha, reaching 14.90 cm.
- Treatment
- increased nitrogen levels from 150 to 250 kg/hae0
- Outcome
- cob girthe0
- Direction
- Progressive increasee0
- Value
- 14.90 cme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Progressive increase in LAI and dry matter production (g/m 2 ) and yield attributes like cob weight (9492 kg/ha), cob girth (14.90 cm), number of rows per cob (14.21), number of grains per row (34.38) and 100-grain weight (30.61 g) was observed due to increased nitrogen levels from 150 to 250 kg/ha”
t0“maize”
Claim · model-written summary
Rows per cob rose with nitrogen up to 250 kg/ha, reaching 14.21.
- Treatment
- increased nitrogen levels from 150 to 250 kg/hae0
- Outcome
- number of rows per cobe0
- Direction
- Progressive increasee0
- Value
- 14.21e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Progressive increase in LAI and dry matter production (g/m 2 ) and yield attributes like cob weight (9492 kg/ha), cob girth (14.90 cm), number of rows per cob (14.21), number of grains per row (34.38) and 100-grain weight (30.61 g) was observed due to increased nitrogen levels from 150 to 250 kg/ha”
t0“maize”
Claim · model-written summary
Grains per row rose with nitrogen up to 250 kg/ha, reaching 34.38.
- Treatment
- increased nitrogen levels from 150 to 250 kg/hae0
- Outcome
- number of grains per rowe0
- Direction
- Progressive increasee0
- Value
- 34.38e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Progressive increase in LAI and dry matter production (g/m 2 ) and yield attributes like cob weight (9492 kg/ha), cob girth (14.90 cm), number of rows per cob (14.21), number of grains per row (34.38) and 100-grain weight (30.61 g) was observed due to increased nitrogen levels from 150 to 250 kg/ha”
t0“maize”
Claim · model-written summary
100-grain weight rose with nitrogen up to 250 kg/ha, reaching 30.61 g.
- Treatment
- increased nitrogen levels from 150 to 250 kg/hae0
- Outcome
- 100-grain weighte0
- Direction
- Progressive increasee0
- Value
- 30.61 ge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Progressive increase in LAI and dry matter production (g/m 2 ) and yield attributes like cob weight (9492 kg/ha), cob girth (14.90 cm), number of rows per cob (14.21), number of grains per row (34.38) and 100-grain weight (30.61 g) was observed due to increased nitrogen levels from 150 to 250 kg/ha”
t0“maize”
Claim · model-written summary
200 kg N/ha produced the highest cob length, 17.82 cm.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highest cob length (17.82 cm) and shelling percentage (64.79%) were recorded at 200 kg N/ha”
t0“maize”
Claim · model-written summary
200 kg N/ha produced the highest shelling percentage, 64.79%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highest cob length (17.82 cm) and shelling percentage (64.79%) were recorded at 200 kg N/ha”
t0“maize”
Claim · model-written summary
250 kg N/ha produced higher grain and stover yields than 150 or 200 kg N/ha.
- Treatment
- 250 kg N/hae0
- Outcome
- grain and stover yieldse0
- Direction
- highere0
- Comparator
- 150 and 200 kg N/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 250 kg N/ha produced higher grain and stover yields and also higher net returns than other levels (150 and 200 kg N/ha)”
t0“maize”
Claim · model-written summary
250 kg N/ha produced higher net returns, although returns were comparable with 200 kg N/ha.
- Treatment
- 250 kg N/hae0
- Outcome
- net returnse0
- Direction
- highere0
- Qualifier
- net returns were comparable with 200 kg N/hae0
- Comparator
- 150 and 200 kg N/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 250 kg N/ha produced higher grain and stover yields and also higher net returns than other levels (150 and 200 kg N/ha) but net returns were comparable with 200 kg N/ha”
t0“maize”
Claim · model-written summary
Spacing 75 x 20 cm gave the greatest plant height.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“highest plant height was recorded at a spacing of 75 x 20 cm”
t0“maize”
Claim · model-written summary
Spacing 45 x 20 cm gave maximum leaf area index.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum leaf area index was recorded at 45 x 20 cm”
t0“maize”
Claim · model-written summary
Dry matter production was higher at spacing 60 x 15 cm.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dry matter production was higher at 60 x 15 cm”
t0“maize”
Claim · model-written summary
Spacing 75 x 15 cm gave higher cob yield, grain yield and net returns.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher cob yield, grain yield and net returns were obtained at a spacing of 75 x 15 cm”
t0“maize”
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