Abstract
Deficit water treatment studies and some practices to reduce the effects of drought on plant can be made in Mediterranean region. Therefore the study was carried out at three different supplies as non-fertilization, standard fertilization [210 kg.ha -1 pure N, 60 kg.ha -1 pure P, 60 kg.ha -1 pure K (NH4NO3, P2O5 and K2O – 60 kg.ha -1 with 15-1515 composite before planting and H 2NCONH2 – 150 kg.ha -1 with urea before first water)] and extra potassium (standard fertilization +60 kg.ha -1 K 2SO4) and three irrigation doses (500 mm, 400 mm and 300 mm) during development stages [(8 leaf stage (V8), before Tasselling (VT), after blister, milk stage and dough stage)] in the Aegean region of Turkey during 2013 summer growth periods. The experiment was a randomized block design with three replications. 31G98, 31D24 and NK-Arma corn cultivars were used to material of the experiment. Seed yield and some yield components such as cob length, the number of seed per cob and 1000 seed weight were measured. Additionally some seed quality traits such as oil content, protein content, starch content, ASH and cellulose contents of corn seed were also measured in the study. The results of this study showed that extra potassium supply was effected on seed yield, the seed number in corncob and ash and cellulose contents of corn seed positively. However 1000 seed weight, corncob length, oil, protein, starch contents of corn seed didn’t effect or negatively affect with extra potassium supply. It was revealed that seed yield, 1000 seed weight, oil and starch contents of corn seed were decreased with deficit water treatments (300 mm and 400 mm) according to standard water treatment (500 mm). In contrary that cob length, the number of seed per cob, protein, ASH and cellulose contents of corn seed values does not give similar responses (increasing or decreasing) with deficit water treatments. The highest seed yield was obtained from 31G98 corn cultivar in standard irrigation dose (500 mm) and extra potassium treatment because of having high thousand seed weight. As a result of the experiment, it was suggested that extra potassium treatment should increase yield and some properties of corn but only extra potassium isn’t exactly effective against negative effects of drought.
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Claims 9
Claim · model-written summary
Extra potassium supply positively affected seed yield and seed number per corncob in corn in the Aegean region of Turkey, compared with standard fertilization.
- Taxon
- corn
Zea mays subsp. mayse1 - Treatment
- extra potassium supplye1
- Outcome
- seed yield, the seed number in corncobe1
- Direction
- positivelye1
- Comparator
- standard fertilizatione0
- Setting
- Aegean region of Turkeye6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“extra potassium (standard fertilization +60 kg.ha -1 K 2SO4)”
e1“extra potassium supply was effected on seed yield, the seed number in corncob and ash and cellulose contents of corn seed positively”
e6“in the Aegean region of Turkey during 2013 summer growth periods”
Claim · model-written summary
Extra potassium supply positively affected ash and cellulose contents of corn seed, compared with standard fertilization.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- extra potassium supplye1
- Outcome
- ash and cellulose contents of corn seede1
- Direction
- positivelye1
- Comparator
- standard fertilizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“extra potassium (standard fertilization +60 kg.ha -1 K 2SO4)”
e1“extra potassium supply was effected on seed yield, the seed number in corncob and ash and cellulose contents of corn seed positively”
Claim · model-written summary
Deficit water treatments of 300 mm and 400 mm decreased seed yield of corn compared with the standard 500 mm irrigation.
- Taxon
- cornZea mays subsp. mayse2
- Treatment
- deficit water treatments (300 mm and 400 mm)e2
- Outcome
- seed yielde2
- Direction
- decreasede2
- Comparator
- standard water treatment (500 mm)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“It was revealed that seed yield, 1000 seed weight, oil and starch contents of corn seed were decreased with deficit water treatments (300 mm and 400 mm) according to standard water treatment (500 mm)”
Claim · model-written summary
Deficit water treatments of 300 mm and 400 mm decreased 1000 seed weight, oil and starch contents of corn seed compared with the standard 500 mm irrigation.
- Taxon
- cornZea mays subsp. mayse2
- Treatment
- deficit water treatments (300 mm and 400 mm)e2
- Outcome
- 1000 seed weight, oil and starch contents of corn seede2
- Direction
- decreasede2
- Comparator
- standard water treatment (500 mm)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“It was revealed that seed yield, 1000 seed weight, oil and starch contents of corn seed were decreased with deficit water treatments (300 mm and 400 mm) according to standard water treatment (500 mm)”
Claim · model-written summary
Deficit water treatments gave no consistent response in cob length, number of seeds per cob and protein content of corn seed.
- Taxon
- cornZea mays subsp. mayse3
- Treatment
- deficit water treatmentse3
- Outcome
- cob length, the number of seed per cob, proteine3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“In contrary that cob length, the number of seed per cob, protein, ASH and cellulose contents of corn seed values does not give similar responses (increasing or decreasing) with deficit water treatments”
Claim · model-written summary
Deficit water treatments gave no consistent response in ash and cellulose contents of corn seed.
- Taxon
- cornZea mays subsp. mayse3
- Treatment
- deficit water treatmentse3
- Outcome
- ASH and cellulose contentse3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“In contrary that cob length, the number of seed per cob, protein, ASH and cellulose contents of corn seed values does not give similar responses (increasing or decreasing) with deficit water treatments”
Claim · model-written summary
Seed yield of corn cultivar 31G98 was highest under the standard 500 mm irrigation with extra potassium, because of its high thousand seed weight.
- Taxon
- cornZea mays subsp. mayse4
- Material
- 31G98e4
- Treatment
- standard irrigation dose (500 mm) and extra potassium treatmente4
- Outcome
- seed yielde4
- Direction
- higheste4
- Qualifier
- because of having high thousand seed weighte4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The highest seed yield was obtained from 31G98 corn cultivar in standard irrigation dose (500 mm) and extra potassium treatment because of having high thousand seed weight”
Claim · model-written summary
The authors suggest that extra potassium treatment should increase yield and some properties of corn.
- Taxon
- cornZea mays subsp. mayse5
- Treatment
- extra potassium treatmente5
- Outcome
- yield and some properties of corne5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“it was suggested that extra potassium treatment should increase yield and some properties of corn but only extra potassium isn’t exactly effective against negative effects of drought”
Claim · model-written summary
The authors conclude that extra potassium alone is not exactly effective against the negative effects of drought on corn.
- Taxon
- cornZea mays subsp. mayse5
- Treatment
- only extra potassiume5
- Outcome
- negative effects of droughte5
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“it was suggested that extra potassium treatment should increase yield and some properties of corn but only extra potassium isn’t exactly effective against negative effects of drought”
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