Abstract
Nitrogen (N) and sulfur (S) are important crop nutrients limiting the crop growth and yield. In order to study N and S effect on growth, dry mater partitioning and grain yield of maize, a field experiment was conducted at the New Developmental Research Farm of Khyber Pakhtunkhwa (KPK), The University of Agriculture, Peshawar during summer 2011, which was designed in randomized complete block design (RCBD) replicated thrice. Growth, dry matter partitioning, yield & yield components, and harvest index responded positively to N and S fertilization, but the magnitude of response varied with level of N and S application. Days to tasseling, silking and physiological maturity delayed, plant height and mean single leaf area increased with increase in N and S levels. Similarly, dry matter partitioning in stem, leaf, ear, and grains was increased with an increase in N and S levels and decreased in the control plots. The heaviest thousand grains weight was obtained when both N and S were applied at the highest rates. The highest grain yield viz., 3122 kg ha -1 was obtained in the plots where N was applied @ 160 kg ha -1 , while minimum grain yield i.e. 2039 kg ha -1 was obtained in control plots. Grain yield increased to maximum (2882 kg ha -1 ) when S was applied @ 40 kg ha -1 , and the lowest grain yield (2458 kg ha -1 ) was recorded in control plots. The harvest index ranked first when both N (27.8%) and S (27.7%) were applied at the highest rates of 160 kg N and 40 kg S ha -1 . Harvest index showed positive relationship with the increase in grain yield and yield components in maize. The results indicated that all the three levels of N and two levels of S increased the yield components and grain yields as well as harvest index in maize, and increased with an increase in N and S levels when compared with the control (N and S not). It is therefore, suggested that application of the highest S @ 40 kg S ha -1 and N levels @ 160 kg N ha -1 could increase maize productivity in the study area.
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Claims 12
Claim · model-written summary
Growth, dry matter partitioning and yield components responded positively to N and S fertilization, with the magnitude of response varying with N and S level.
- Treatment
- N and S fertilizatione1
- Outcome
- Growth, dry matter partitioning, yield & yield componentse1
- Direction
- responded positivelye1
- Qualifier
- the magnitude of response varied with level of N and S applicatione1
- Setting
- field experimente0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Yield of Maize”
e0“a field experiment was conducted at the New Developmental Research Farm of Khyber Pakhtunkhwa (KPK), The University of Agriculture, Peshawar during summer 2011”
e1“Growth, dry matter partitioning, yield & yield components, and harvest index responded positively to N and S fertilization, but the magnitude of response varied with level of N and S application”
Claim · model-written summary
Harvest index responded positively to N and S fertilization.
- Treatment
- N and S fertilizatione1
- Outcome
- harvest indexe1
- Direction
- responded positivelye1
- Setting
- field experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Yield of Maize”
e0“a field experiment was conducted at the New Developmental Research Farm of Khyber Pakhtunkhwa (KPK), The University of Agriculture, Peshawar during summer 2011”
e1“Growth, dry matter partitioning, yield & yield components, and harvest index responded positively to N and S fertilization, but the magnitude of response varied with level of N and S application”
Claim · model-written summary
Days to tasseling, silking and physiological maturity were delayed with increasing N and S levels.
- Treatment
- increase in N and S levelse2
- Outcome
- Days to tasseling, silking and physiological maturitye2
- Direction
- delayede2
- Setting
- field experimente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Yield of Maize”
e0“a field experiment was conducted at the New Developmental Research Farm of Khyber Pakhtunkhwa (KPK), The University of Agriculture, Peshawar during summer 2011”
e2“Days to tasseling, silking and physiological maturity delayed, plant height and mean single leaf area increased with increase in N and S levels”
Claim · model-written summary
Plant height and mean single leaf area increased with increasing N and S levels.
- Treatment
- increase in N and S levelse2
- Outcome
- plant height and mean single leaf areae2
- Direction
- increasede2
- Setting
- field experimente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Yield of Maize”
e0“a field experiment was conducted at the New Developmental Research Farm of Khyber Pakhtunkhwa (KPK), The University of Agriculture, Peshawar during summer 2011”
e2“Days to tasseling, silking and physiological maturity delayed, plant height and mean single leaf area increased with increase in N and S levels”
Claim · model-written summary
Dry matter partitioning in stem, leaf, ear and grains increased with increasing N and S levels and decreased in control plots.
- Organ / stage
- stem, leaf, ear, and grainse3
- Treatment
- increase in N and S levelse3
- Outcome
- dry matter partitioninge3
- Direction
- increasede3
- Comparator
- control plotse3
- Setting
- field experimente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Yield of Maize”
e0“a field experiment was conducted at the New Developmental Research Farm of Khyber Pakhtunkhwa (KPK), The University of Agriculture, Peshawar during summer 2011”
e3“dry matter partitioning in stem, leaf, ear, and grains was increased with an increase in N and S levels and decreased in the control plots”
Claim · model-written summary
Thousand grains weight was heaviest when both N and S were applied at the highest rates.
- Treatment
- both N and S were applied at the highest ratese4
- Outcome
- thousand grains weighte4
- Direction
- heavieste4
- Setting
- field experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Yield of Maize”
e0“a field experiment was conducted at the New Developmental Research Farm of Khyber Pakhtunkhwa (KPK), The University of Agriculture, Peshawar during summer 2011”
e4“The heaviest thousand grains weight was obtained when both N and S were applied at the highest rates”
Claim · model-written summary
Grain yield was highest, at 3122 kg ha -1, where N was applied at 160 kg ha -1, compared with control plots.
- Treatment
- N was applied @ 160 kg ha -1e5
- Outcome
- grain yielde5
- Direction
- higheste5
- Value
- 3122 kg ha -1e5
- Comparator
- control plotse5
- Setting
- field experimente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Yield of Maize”
e0“a field experiment was conducted at the New Developmental Research Farm of Khyber Pakhtunkhwa (KPK), The University of Agriculture, Peshawar during summer 2011”
e5“The highest grain yield viz., 3122 kg ha -1 was obtained in the plots where N was applied @ 160 kg ha -1 , while minimum grain yield i.e. 2039 kg ha -1 was obtained in control plots”
Claim · model-written summary
Grain yield increased to a maximum of 2882 kg ha -1 when S was applied at 40 kg ha -1, compared with control plots.
- Treatment
- S was applied @ 40 kg ha -1e6
- Outcome
- Grain yielde6
- Direction
- increased to maximume6
- Value
- 2882 kg ha -1e6
- Comparator
- control plotse6
- Setting
- field experimente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Yield of Maize”
e0“a field experiment was conducted at the New Developmental Research Farm of Khyber Pakhtunkhwa (KPK), The University of Agriculture, Peshawar during summer 2011”
e6“Grain yield increased to maximum (2882 kg ha -1 ) when S was applied @ 40 kg ha -1 , and the lowest grain yield (2458 kg ha -1 ) was recorded in control plots”
Claim · model-written summary
Harvest index ranked first when both N and S were applied at the highest rates of 160 kg N and 40 kg S ha -1, at 27.8% (S 27.7%).
- Treatment
- applied at the highest rates of 160 kg N and 40 kg S ha -1e7
- Outcome
- harvest indexe7
- Direction
- ranked firste7
- Value
- 27.8%e7
- Qualifier
- S (27.7%)e7
- Setting
- field experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Yield of Maize”
e0“a field experiment was conducted at the New Developmental Research Farm of Khyber Pakhtunkhwa (KPK), The University of Agriculture, Peshawar during summer 2011”
e7“The harvest index ranked first when both N (27.8%) and S (27.7%) were applied at the highest rates of 160 kg N and 40 kg S ha -1”
Claim · model-written summary
Harvest index showed a positive relationship with the increase in grain yield and yield components in maize.
- Treatment
- increase in grain yield and yield componentse1
- Outcome
- harvest indexe1
- Direction
- increaseinferrede1
- Setting
- field experimente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a field experiment was conducted at the New Developmental Research Farm of Khyber Pakhtunkhwa (KPK), The University of Agriculture, Peshawar during summer 2011”
e1“Harvest index showed positive relationship with the increase in grain yield and yield components in maize”
Claim · model-written summary
All three N levels and two S levels increased yield components, grain yield and harvest index compared with the control.
- Treatment
- all the three levels of N and two levels of Se1
- Outcome
- yield components and grain yields as well as harvest indexe1
- Direction
- increasede1
- Comparator
- control (N and S not)e2
- Setting
- field experimente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a field experiment was conducted at the New Developmental Research Farm of Khyber Pakhtunkhwa (KPK), The University of Agriculture, Peshawar during summer 2011”
e1“all the three levels of N and two levels of S increased the yield components and grain yields as well as harvest index in maize”
e2“when compared with the control (N and S not)”
Claim · model-written summary
Applying the highest S at 40 kg S ha -1 and N at 160 kg N ha -1 could increase maize productivity in the study area.
- Treatment
- application of the highest S @ 40 kg S ha -1 and N levels @ 160 kg N ha -1e0
- Outcome
- maize productivitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of the highest S @ 40 kg S ha -1 and N levels @ 160 kg N ha -1 could increase maize productivity in the study area”
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