Abstract
The present investigation was carried out to access the optimal N dose and its impact on growth, yield and yield attributes of hybrid maize (Zea mays. L) under subsoil compaction condition. The experiment was conducted at Research Farm, Department of Soil Science, Punjab Agricultural University, Ludhiana during the summer seasons of the year 2012 and 2013. The experiment comprised three subsoil compaction treatments in main plots and three nitrogen levels in sub plots following split-plot design with three replications. Plant height, leaf area index and dry matter accumulation were negatively affected by subsoil compaction. However nitrogen fertilization mitigates the negative effect of subsoil compaction on growth of maize. Cob length was recorded lower with higher cob barrenness under higher degree of subsoil compaction. The grain yield was reduced by 13-16 per cent and biomass yield by 10-17 per cent due to subsoil compaction. The total N uptake was 14.6 and 18.2 per cent higher under C0 treatment than that in highly compacted subsoil (C2), while N2 treatment had improved the total N uptake by 18.6 and 14.9 per cent as compared to N0 treatment during the year 2012 and 2013, respectively. The results revealed that N1 fertilization level can be recommended under subsurface compacted soils as compared to N0 and N2 rates. This study further suggests the management option should be explored in addition to deep tillage to maximize yield of maize.
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Claims 10
Claim · model-written summary
Subsoil compaction negatively affected maize plant height, leaf area index and dry matter accumulation.
- Treatment
- subsoil compactione1
- Outcome
- Plant height, leaf area index and dry matter accumulatione1
- Direction
- negatively affectede1
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize (Zea mays L.)”
e1“Plant height, leaf area index and dry matter accumulation were negatively affected by subsoil compaction”
Claim · model-written summary
Nitrogen fertilization mitigated the negative effect of subsoil compaction on maize growth.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize (Zea mays L.)”
e2“nitrogen fertilization mitigates the negative effect of subsoil compaction on growth of maize”
Claim · model-written summary
Cob length was lower under higher subsoil compaction.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize (Zea mays L.)”
e3“Cob length was recorded lower with higher cob barrenness under higher degree of subsoil compaction”
Claim · model-written summary
Cob barrenness was higher under higher subsoil compaction.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize (Zea mays L.)”
e3“Cob length was recorded lower with higher cob barrenness under higher degree of subsoil compaction”
Claim · model-written summary
Subsoil compaction reduced grain yield by 13-16 per cent.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize (Zea mays L.)”
e4“The grain yield was reduced by 13-16 per cent and biomass yield by 10-17 per cent due to subsoil compaction”
Claim · model-written summary
Subsoil compaction reduced biomass yield by 10-17 per cent.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize (Zea mays L.)”
e4“The grain yield was reduced by 13-16 per cent and biomass yield by 10-17 per cent due to subsoil compaction”
Claim · model-written summary
Total N uptake under N2 treatment was higher than under N0 treatment by 18.6 and 14.9 per cent.
- Treatment
- N2 treatmente6
- Outcome
- total N uptakee6
- Direction
- improvede6
- Value
- 18.6 and 14.9 per cente6
- Comparator
- N0 treatmente6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize (Zea mays L.)”
e6“N2 treatment had improved the total N uptake by 18.6 and 14.9 per cent as compared to N0 treatment”
Claim · model-written summary
Total N uptake was 14.6 and 18.2 per cent higher under C0 than in highly compacted subsoil.
- Treatment
- highly compacted subsoile5
- Outcome
- total N uptakee5
- Direction
- highere5
- Value
- 14.6 and 18.2 per cente5
- Comparator
- C0 treatmente5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize (Zea mays L.)”
e5“The total N uptake was 14.6 and 18.2 per cent higher under C0 treatment than that in highly compacted subsoil (C2)”
Claim · model-written summary
N1 fertilization level can be recommended under subsurface compacted soils compared with N0 and N2 rates.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize (Zea mays L.)”
e7“The results revealed that N1 fertilization level can be recommended under subsurface compacted soils as compared to N0 and N2 rates”
Claim · model-written summary
Management option beyond deep tillage should be explored to maximize maize yield under subsoil compaction.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Maize (Zea mays L.)”
e0“This study further suggests the management option should be explored in addition to deep tillage to maximize yield of maize”
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