Abstract
A two year field experiment was conducted to evaluate the ramification of nitrogen sources on the physiology and yield of hybrid maize (Zea mays L.) at the Agronomic Research Area, University of Agriculture Faisalabad, Pakistan, during 2008 to 2009. The experiment design was a randomized complete block design (RCBD) under factorial arrangement with three replications. Treatments comprised two hybrids: that is; H1 (Pioneer-30Y87) and H2 (Pioneer-31R88) with six nitrogen sources S0 : control (0) kg N ha-1, S1 : chemical source (urea) @ 250 kg N ha-1 , S2: poultry manure (PM) @ 9.6 t ha-1, S3 : farm yard manure (FYM) @17.8t ha-1 , S4: press mud of sugarcane (PMS) @ 8.5 t ha-1 and S5: compost (C) @ 10.0 t ha-1. Plant height (cm), 1000-grain weight (g), grain yield (t ha-1), leaf area index, leaf area duration, dry matter accumulation, crop growth rate, and net assimilation rate varied with treatments in 2008, but plant height (cm), 1000-grain weight (g) and grain yield (t ha-1) did not differ with treatments in 2009. Physiological traits, such as leaf area index, leaf area duration, dry matter accumulation, crop growth rate and net assimilation rate also responded to treatments. Hybrid maize H1 (Pioneer 30Y87) produced more grain yield due to enhanced physiological traits with urea compared to other sources of N. Hybrid maize H1 (Pioneer 30Y87) produced better grain yield and indirectly enhanced physiological traits when nitrogen sources were applied as chemical (urea) @ 250 kg N ha-1 as compared to other sources of nitrogen. Key words: Nitrogen, hybrid maize, yield, physiological traits.
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Claims 6
Claim · model-written summary
Plant height, grain weight and yield varied by treatment in 2008.
- Treatment
- treatmentse0
- Outcome
- Plant height (cm), 1000-grain weight (g), grain yield (t ha-1)e0
- Direction
- variede0
- Qualifier
- 2008e0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant height (cm), 1000-grain weight (g), grain yield (t ha-1), leaf area index, leaf area duration, dry matter accumulation, crop growth rate, and net assimilation rate varied with treatments in 2008”
t0“hybrid maize”
Claim · model-written summary
Physiological traits varied by treatment in 2008.
- Treatment
- treatmentse0
- Outcome
- leaf area index, leaf area duration, dry matter accumulatione0
- Direction
- variede0
- Qualifier
- 2008e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf area index, leaf area duration, dry matter accumulation, crop growth rate, and net assimilation rate varied with treatments in 2008”
t0“hybrid maize”
Claim · model-written summary
Plant height, grain weight and yield did not differ by treatment in 2009.
- Treatment
- treatmentse0
- Outcome
- plant height (cm), 1000-grain weight (g) and grain yield (t ha-1)e0
- Direction
- did not differe0
- Qualifier
- 2009e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant height (cm), 1000-grain weight (g) and grain yield (t ha-1) did not differ with treatments in 2009.”
t0“hybrid maize”
Claim · model-written summary
Leaf area duration, crop growth rate and net assimilation rate also responded to treatment.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Physiological traits, such as leaf area index, leaf area duration, dry matter accumulation, crop growth rate and net assimilation rate also responded to treatments.”
t0“hybrid maize”
Claim · model-written summary
H1 produced more grain yield with urea than other nitrogen sources.
- Material
- H1 (Pioneer 30Y87)e0
- Treatment
- ureae0
- Outcome
- grain yielde0
- Direction
- moree0
- Comparator
- other sources of Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hybrid maize H1 (Pioneer 30Y87) produced more grain yield due to enhanced physiological traits with urea compared to other sources of N.”
Claim · model-written summary
Enhanced physiological traits were linked to H1 yield under urea.
- Material
- H1 (Pioneer 30Y87)e0
- Treatment
- ureae0
- Outcome
- enhanced physiological traitse0
- Qualifier
- due to enhanced physiological traitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Hybrid maize H1 (Pioneer 30Y87) produced more grain yield due to enhanced physiological traits with urea compared to other sources of N.”
The same questions in other papers
nitrogen · yield · Zea mays (maize)Positive and negative results
1,905 papers in the same direction as this paper · 234 in the opposite direction · 45 reporting no difference from an alternative
- negative
- no effect
- positive
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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.