Abstract
Field trials were conducted at the research field of Institute of Agricultural Research and Training, Moor plantation, Ibadan during 2010 and 2011 cropping season in order to evaluate the performances of five open pollinated maize varieties subjected to two fertility levels 0 and 100 kg Nha-1 fertilizer. The trials consisted of split-plots arranged in randomized complete block design of three replicates. The objective was to evaluate and compare the responses of five maize varieties to N fertilizer application. Data were obtained from plant height, ear height, leaf area, ear length, number of kernels per cob, weight of 100 kernels and grain yield. Data were analyzed using ANOVA and means separated by DMRT (P=0.05 and 0.01). The results obtained showed that N fertilizer significantly increased the growth and yield related parameters of all the traits except ear height and ear length while grain yield was higher in 2011. Varieties by nitrogen interactions differed significantly for the various parameters measured except for ear height and kernel/cob. In the fertilized plots ART SW5-OB had highest mean grain yield. Obatanpa and ARTSW6-OB had highest grain yield compared with other varieties in the fertilizer stressed plots while Ile1-OB had highest yield reduction under the two fertility environments. ARTSW5-OB had the highest nitrogen use efficiency while Obatanpa and ARTSW6-OB were least, but produces better grain yield under low nitrogen input. In conclusion, the result indicated a positive and varied response of maize varieties to nitrogen fertilizer application.
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Claims 14
Claim · model-written summary
N fertilizer significantly increased the growth and yield related parameters of maize traits, except ear height and ear length.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N fertilizer significantly increased the growth and yield related parameters of all the traits except ear height and ear length”
t0“Five Maize Varieties”
Claim · model-written summary
N fertilizer did not significantly change ear height and ear length.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N fertilizer significantly increased the growth and yield related parameters of all the traits except ear height and ear length”
t0“Five Maize Varieties”
Claim · model-written summary
Grain yield was higher in 2011.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain yield was higher in 2011”
t0“Five Maize Varieties”
Claim · model-written summary
Variety by nitrogen interactions differed significantly for the parameters measured except ear height and kernel per cob.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Varieties by nitrogen interactions differed significantly for the various parameters measured except for ear height and kernel/cob”
t0“Five Maize Varieties”
Claim · model-written summary
In fertilized plots, variety ART SW5-OB had the highest mean grain yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the fertilized plots ART SW5-OB had highest mean grain yield”
t0“Five Maize Varieties”
Claim · model-written summary
In fertilizer-stressed plots, Obatanpa had the highest grain yield compared with other varieties.
- Material
- Obatanpae0
- Outcome
- grain yielde0
- Direction
- higheste0
- Qualifier
- fertilizer stressed plotse0
- Comparator
- other varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Obatanpa and ARTSW6-OB had highest grain yield compared with other varieties in the fertilizer stressed plots”
t0“Five Maize Varieties”
Claim · model-written summary
In fertilizer-stressed plots, ARTSW6-OB had the highest grain yield compared with other varieties.
- Material
- ARTSW6-OBe0
- Outcome
- grain yielde0
- Direction
- higheste0
- Qualifier
- fertilizer stressed plotse0
- Comparator
- other varietiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Obatanpa and ARTSW6-OB had highest grain yield compared with other varieties in the fertilizer stressed plots”
t0“Five Maize Varieties”
Claim · model-written summary
Variety Ile1-OB had the highest yield reduction under the two fertility environments.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ile1-OB had highest yield reduction under the two fertility environments”
t0“Five Maize Varieties”
Claim · model-written summary
Variety ARTSW5-OB had the highest nitrogen use efficiency.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ARTSW5-OB had the highest nitrogen use efficiency while Obatanpa and ARTSW6-OB were least”
t0“Five Maize Varieties”
Claim · model-written summary
Variety Obatanpa had the lowest nitrogen use efficiency.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ARTSW5-OB had the highest nitrogen use efficiency while Obatanpa and ARTSW6-OB were least”
t0“Five Maize Varieties”
Claim · model-written summary
Variety ARTSW6-OB had the lowest nitrogen use efficiency.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ARTSW5-OB had the highest nitrogen use efficiency while Obatanpa and ARTSW6-OB were least”
t0“Five Maize Varieties”
Claim · model-written summary
Variety Obatanpa produced better grain yield under low nitrogen input.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Obatanpa and ARTSW6-OB were least, but produces better grain yield under low nitrogen input”
t0“Five Maize Varieties”
Claim · model-written summary
Variety ARTSW6-OB produced better grain yield under low nitrogen input.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Obatanpa and ARTSW6-OB were least, but produces better grain yield under low nitrogen input”
t0“Five Maize Varieties”
Claim · model-written summary
The authors conclude that maize varieties showed a positive and varied response to nitrogen fertilizer application.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the result indicated a positive and varied response of maize varieties to nitrogen fertilizer application”
t0“Five Maize Varieties”
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See all 3,908 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.