Abstract
One experiment was conducted in 2014 and respected in 2015 rice seasons at the farm of RiceResearch & TrainingCenter, Sakha, Kafrelsheikh, Egypt. To study the impact of different time and method of potassium and various levels of Cytokinin and their interaction on the yield and its components, some grain quality characters and uptake of N, P and K. The treatments of potassium were (1) control ( Zero potassium) (K1), (2) Full dose as basal (B) (K2), (3) Half dose of potassium as basal + 2% K2O spray at mid-tillering and late booting (K3), (4) Half dose of potassium as basal + 2% K2O spray at mid tillering (K4), (5) Half dose of potassium as basal + 2% K2O spray at late booting (K5) and (6) 2% K2O spray at mid-tillering and late booting (K6). Cytokinin (Kinetin) treatments were Control (water spray) (C1), 5 ppm (C2), 10 ppm (C3), 15ppm (C4) each of them sprayed at both mid tillering and late booting. The design of the experiment was split plot with four replications. The main plots had the potassium treatments, while sub plots received the Cytokinin treatments. The studied characters were number of panicles/m2, weight of panicle, number of grains/panicle, filled grain %, 1000-grain weight, grain and straw yield, Some of grain quality characters and the uptake of nitrogen, phosphorus and potassium. The main results indicated that all the studied treatments of both potassium and Cytokinin caused an increase in all studied characters as compared with control. The best treatments of potassium was half of the dose of potassium + 2% K2O sprayed at mid + 2% K2O sprayed at L.B which caused a significant increase in all the previous studied characters because of its continuous supply the tested cultivar by K through the different stages. Also, sprayed Cytokinin at the rate of 15 ppm at both mid tillering and late booting significantly increased all the studied characters because of the role of cytokinin for improving the growth of roots and shoots as well as the increasing in viability of rice leaves (late senescence of leaves). As for the interaction between potassium (K) treatments and Cytokinin levels, the results revealed that the combination of half dose of potassium + 2% K2O sprayed at both mid tillering and late booting with 15 ppm sprayed at mid tillering and late booting produced the greatest values in all the studied characters.
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Claims 8
Claim · model-written summary
Potassium and cytokinin treatments increased panicle number, panicle weight and grains per panicle versus control.
- Taxon
- Rice
Oryza sativat0 - Treatment
- potassium and Cytokinine0
- Outcome
- number of panicles/m2, weight of panicle, number of grains/paniclee1
- Direction
- increasee0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“all the studied treatments of both potassium and Cytokinin caused an increase in all studied characters as compared with control”
e1“number of panicles/m2, weight of panicle, number of grains/panicle”
Claim · model-written summary
Potassium and cytokinin treatments increased filled grain percentage, 1000-grain weight and grain and straw yield versus control.
- Taxon
- RiceOryza sativat0
- Treatment
- potassium and Cytokinine0
- Outcome
- filled grain %, 1000-grain weight, grain and straw yielde1
- Direction
- increasee0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“all the studied treatments of both potassium and Cytokinin caused an increase in all studied characters as compared with control”
e1“filled grain %, 1000-grain weight, grain and straw yield”
Claim · model-written summary
Potassium and cytokinin treatments increased grain quality traits and nitrogen, phosphorus and potassium uptake versus control.
- Taxon
- RiceOryza sativat0
- Treatment
- potassium and Cytokinine0
- Outcome
- grain quality characters and the uptake of nitrogen, phosphorus and potassiume1
- Direction
- increasee0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“all the studied treatments of both potassium and Cytokinin caused an increase in all studied characters as compared with control”
e1“Some of grain quality characters and the uptake of nitrogen, phosphorus and potassium”
Claim · model-written summary
Half basal potassium plus 2% K2O sprays at mid tillering and late booting significantly increased the studied traits.
- Taxon
- RiceOryza sativat0
- Treatment
- half of the dose of potassium + 2% K2O sprayed at mid + 2% K2O sprayed at L.Be0
- Outcome
- all the previous studied characterse0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“half of the dose of potassium + 2% K2O sprayed at mid + 2% K2O sprayed at L.B which caused a significant increase in all the previous studied characters”
e1“number of panicles/m2, weight of panicle, number of grains/panicle, filled grain %, 1000-grain weight, grain and straw yield”
Claim · model-written summary
Cytokinin at 15 ppm at mid tillering and late booting significantly increased the studied traits.
- Taxon
- RiceOryza sativat0
- Treatment
- Cytokinin at the rate of 15 ppm at both mid tillering and late bootinge0
- Outcome
- all the studied characterse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“sprayed Cytokinin at the rate of 15 ppm at both mid tillering and late booting significantly increased all the studied characters”
Claim · model-written summary
The combined half-dose potassium and 2% K2O sprays with 15 ppm cytokinin produced the greatest values of all studied traits.
- Taxon
- RiceOryza sativat0
- Treatment
- combination of half dose of potassium + 2% K2O sprayed at both mid tillering and late booting with 15 ppm sprayed at mid tillering and late bootinge0
- Outcome
- all the studied characterse0
- Direction
- greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“combination of half dose of potassium + 2% K2O sprayed at both mid tillering and late booting with 15 ppm sprayed at mid tillering and late booting produced the greatest values in all the studied characters”
Claim · model-written summary
The authors attributed the potassium treatment response to continuous K supply across stages.
- Taxon
- RiceOryza sativat0
- Compound
- Ke0
- Outcome
- increase in all the previous studied characterse1
- Qualifier
- continuous supply the tested cultivar by K through the different stagese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“because of its continuous supply the tested cultivar by K through the different stages”
e1“caused a significant increase in all the previous studied characters”
Claim · model-written summary
The authors attributed the cytokinin response to better root and shoot growth and delayed leaf senescence.
- Taxon
- RiceOryza sativat0
- Compound
- cytokinine0
- Outcome
- increased all the studied characterse1
- Qualifier
- improving the growth of roots and shoots as well as the increasing in viability of rice leaves (late senescence of leaves)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“because of the role of cytokinin for improving the growth of roots and shoots as well as the increasing in viability of rice leaves (late senescence of leaves)”
e1“significantly increased all the studied characters”
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See all 383 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.