Abstract
In order to consider yield changes and some characteristics of corn cv. Jeta reaction to water deficit stress and potassium fertilizer, a randomized complete block design base split plot experiment with three replications was conducted during 2009 at Agricultural Research Station, Islamic Azad University, Tabriz branch, Iran. Water deficit stress in four levels after 50, 90, 130 and 170 mm evaporation from class A in main plot and potassium sulfate in five levels 0, 50, 100, 150 and 200 kg/ha in sub plots. The obtained results indicated that increasing water deficit lead to reduce leaves number, stem diameter, biomass, grain numbers per row, grains weight per ear, 1000 grains weight, leaf area duration, grains effective filling period and grains yield. Increasing application of potassium fertilizer from 0 to 200 kg/ha increased number of leaves, stem diameter and biomass. The highest plant biomass was obtained by irrigation after 50 mm evaporation from head and application potassium fertilizer at the rate 200 kg/ha and the lowest by irrigation after 170 mm evaporation and lack potassium fertilizer. Also, application of 200 kg K/ha increased grains number per row, grains weight per row and 1000 grains weight that increased grains yield. The highest grains yield was 15.9 t/ha resulted in by application potassium fertilizer at the rate of 200 kg/ha and the lowest at lack application fertilizer equal 10 t/ha. Application of 200 kg K/ha increased leaves number, stem diameter, biomass, grains number per row, grains weight per row, 1000 grains weight relation lack application the rate 6.5, 92.49, 66.82, 24.96, 48.4, 13.92%, respectively. Increase in the application of potassium fertilizer caused to augmentation leaf area duration and in this way effective seed filling period find to increase. Base on the results of this experiment, application potassium fertilizer under water deficit condition decreased grains yield from 19.96 to 48.37%.
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Claims 14
Claim · model-written summary
Increasing water deficit reduced corn leaf number, stem diameter, and biomass.
- Taxon
- corn
Zea mays subsp. mayst0 - Treatment
- water deficite0
- Outcome
- leaves number, stem diameter, biomasse0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing water deficit lead to reduce leaves number, stem diameter, biomass”
t0“Corn Yield (Jeta cv.)”
Claim · model-written summary
Increasing water deficit reduced grain number per row, grain weight per ear, and thousand-grain weight.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- water deficite0
- Outcome
- grain numbers per row, grains weight per ear, 1000 grains weighte0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing water deficit lead to reduce leaves number, stem diameter, biomass, grain numbers per row, grains weight per ear, 1000 grains weight”
t0“Corn Yield (Jeta cv.)”
Claim · model-written summary
Increasing water deficit reduced leaf area duration and effective grain-filling period.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- water deficite0
- Outcome
- leaf area duration, grains effective filling periode0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing water deficit lead to reduce leaves number, stem diameter, biomass, grain numbers per row, grains weight per ear, 1000 grains weight, leaf area duration, grains effective filling period”
t0“Corn Yield (Jeta cv.)”
Claim · model-written summary
Increasing water deficit reduced corn grain yield.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- water deficite0
- Outcome
- grains yielde0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing water deficit lead to reduce leaves number, stem diameter, biomass, grain numbers per row, grains weight per ear, 1000 grains weight, leaf area duration, grains effective filling period and grains yield”
t0“Corn Yield (Jeta cv.)”
Claim · model-written summary
Increasing potassium fertilizer from 0 to 200 kg/ha increased corn leaf number by 6.5%.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- 200 kg K/hae0
- Outcome
- leaves numbere0
- Direction
- increasede0
- Value
- 6.5e0
- Comparator
- lack applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 200 kg K/ha increased leaves number, stem diameter, biomass, grains number per row, grains weight per row, 1000 grains weight relation lack application the rate 6.5, 92.49, 66.82, 24.96, 48.4, 13.92%, respectively”
e1“6.5, 92.49, 66.82, 24.96, 48.4, 13.92%”
t0“Corn Yield (Jeta cv.)”
Claim · model-written summary
Potassium fertilizer increased corn stem diameter by 92.49%.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- 200 kg K/hae0
- Outcome
- stem diametere0
- Direction
- increasede0
- Value
- 92.49e0
- Comparator
- lack applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 200 kg K/ha increased leaves number, stem diameter, biomass, grains number per row, grains weight per row, 1000 grains weight relation lack application the rate 6.5, 92.49, 66.82, 24.96, 48.4, 13.92%, respectively”
t0“Corn Yield (Jeta cv.)”
Claim · model-written summary
Potassium fertilizer increased corn biomass by 66.82%.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- 200 kg K/hae0
- Outcome
- biomasse0
- Direction
- increasede0
- Value
- 66.82e0
- Comparator
- lack applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 200 kg K/ha increased leaves number, stem diameter, biomass, grains number per row, grains weight per row, 1000 grains weight relation lack application the rate 6.5, 92.49, 66.82, 24.96, 48.4, 13.92%, respectively”
t0“Corn Yield (Jeta cv.)”
Claim · model-written summary
Potassium fertilizer increased corn grain number per row by 24.96%.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- 200 kg K/hae0
- Outcome
- grains number per rowe0
- Direction
- increasede0
- Value
- 24.96e0
- Comparator
- lack applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 200 kg K/ha increased leaves number, stem diameter, biomass, grains number per row, grains weight per row, 1000 grains weight relation lack application the rate 6.5, 92.49, 66.82, 24.96, 48.4, 13.92%, respectively”
t0“Corn Yield (Jeta cv.)”
Claim · model-written summary
Potassium fertilizer increased corn grain weight per row by 48.4%.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- 200 kg K/hae0
- Outcome
- grains weight per rowe0
- Direction
- increasede0
- Value
- 48.4e0
- Comparator
- lack applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 200 kg K/ha increased leaves number, stem diameter, biomass, grains number per row, grains weight per row, 1000 grains weight relation lack application the rate 6.5, 92.49, 66.82, 24.96, 48.4, 13.92%, respectively”
t0“Corn Yield (Jeta cv.)”
Claim · model-written summary
Potassium fertilizer increased corn thousand-grain weight by 13.92%.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- 200 kg K/hae0
- Outcome
- 1000 grains weighte0
- Direction
- increasede0
- Value
- 13.92%e0
- Comparator
- lack applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 200 kg K/ha increased leaves number, stem diameter, biomass, grains number per row, grains weight per row, 1000 grains weight relation lack application the rate 6.5, 92.49, 66.82, 24.96, 48.4, 13.92%, respectively”
t0“Corn Yield (Jeta cv.)”
Claim · model-written summary
Corn biomass was highest with irrigation after 50 mm evaporation and potassium fertilizer at 200 kg/ha.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- irrigation after 50 mm evaporation from head and application potassium fertilizer at the rate 200 kg/hae0
- Outcome
- plant biomasse0
- Direction
- higheste0
- Comparator
- irrigation after 170 mm evaporation and lack potassium fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest plant biomass was obtained by irrigation after 50 mm evaporation from head and application potassium fertilizer at the rate 200 kg/ha and the lowest by irrigation after 170 mm evaporation and lack potassium fertilizer”
t0“Corn Yield (Jeta cv.)”
Claim · model-written summary
Corn grain yield reached 15.9 t/ha with potassium fertilizer at 200 kg/ha versus 10 t/ha without fertilizer.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- potassium fertilizer at the rate of 200 kg/hae0
- Outcome
- grains yielde0
- Direction
- higheste0
- Value
- 15.9 t/hae0
- Qualifier
- 10 t/hae0
- Comparator
- lack application fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest grains yield was 15.9 t/ha resulted in by application potassium fertilizer at the rate of 200 kg/ha and the lowest at lack application fertilizer equal 10 t/ha”
t0“Corn Yield (Jeta cv.)”
Claim · model-written summary
Increasing potassium fertilizer augmented leaf area duration and effective seed filling period.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- potassium fertilizere0
- Outcome
- leaf area duration and in this way effective seed filling periode0
- Direction
- augmentatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase in the application of potassium fertilizer caused to augmentation leaf area duration and in this way effective seed filling period find to increase”
t0“Corn Yield (Jeta cv.)”
Claim · model-written summary
The authors report that potassium fertilizer under water deficit decreased grain yield by 19.96 to 48.37%.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- potassium fertilizer under water deficit conditione0
- Outcome
- grains yielde0
- Direction
- decreasede0
- Value
- 19.96 to 48.37%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application potassium fertilizer under water deficit condition decreased grains yield from 19.96 to 48.37%”
t0“Corn Yield (Jeta cv.)”
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