Abstract
Two field experiments were carried out at Sids Agricultural Research station, Beni-Suef Governorate in 2009 and 2010 seasons, to study the effect of the potassium sulfate and potassium humate on Egyptian cotton cultivar, Giza 80 (G. barbadense L.). The aim was to investigate the effect of two concentrations of soil potassium humate (80 %) with rate of 4 and 6 kg / fed. and foliar application of potassium humate with 2 and 3 g / L. sprayed at pinhead square, start of flowering and peak of flowering stages, on growth, leaf nutrient contents, earliness, seed cotton yield and yield components. The obtained results could be summarized as follows: Foliar application of potassium humate produced the highest values of leaf N, K, Ca, Fe, Zn, Mn and Cu ppm, contents as compared with the other treatments. All treatments led to significant increase of leaf macro and micronutrients contents compared with the control treatment, but values of leaf P % and Mg % content were not significantly increased. All treatments significant increase of leaves content of chlorophyll a, b, (a + b) and carotenoids. The highest seed cotton yield / fed. and yield components showed significant increase in the application of soil potassium humate (4 kg / fed. + spraying cotton plants potassium humate 2 g / L.). The application of potassium humate significantly increased number of fruiting branches, number of open bolls/plant, boll weight, seed cotton yield / fed., oil % and protein % in seeds of cotton as compared with the control treatment in both seasons. Various treatments had insignificant effects on lint %, earliness % and fiber quality in both seasons. Key words: potassium sulfate, potassium humate, Growth, leaf nutrient, yield and yield components, oil, protein.
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Claims 8
Claim · model-written summary
Foliar potassium humate gave the highest leaf N, K, Ca, Fe, Zn, Mn, and Cu contents.
Verbatim
e0“Egyptian cotton cultivar, Giza 80 (G. barbadense L.)”
e1“Foliar application of potassium humate produced the highest values of leaf N, K, Ca, Fe, Zn, Mn and Cu ppm, contents as compared with the other treatments.”
Claim · model-written summary
All potassium treatments significantly increased leaf macro- and micronutrient contents compared with control.
Verbatim
e0“G. barbadense L.”
e1“All treatments led to significant increase of leaf macro and micronutrients contents compared with the control treatment”
Claim · model-written summary
Leaf P and Mg contents did not increase significantly under the treatments.
Not reportedTreatmentComparator
Verbatim
e0“G. barbadense L.”
e1“values of leaf P % and Mg % content were not significantly increased”
Claim · model-written summary
All treatments significantly increased leaf chlorophyll a, b, total chlorophyll, and carotenoids.
- Taxon
- G. barbadense L.e0
- Treatment
- All treatmentse1
- Outcome
- leaves content of chlorophyll a, b, (a + b) and carotenoidse1
- Direction
- increasee1
Not reportedComparator
Verbatim
e0“G. barbadense L.”
e1“All treatments significant increase of leaves content of chlorophyll a, b, (a + b) and carotenoids.”
Claim · model-written summary
Combined soil potassium humate at 4 kg/fed and foliar humate at 2 g/L gave the highest seed cotton yield and yield components.
- Taxon
- G. barbadense L.e0
- Treatment
- soil potassium humate (4 kg / fed. + spraying cotton plants potassium humate 2 g / L.)e1
- Outcome
- seed cotton yield / fed. and yield componentse1
- Direction
- higheste1
Not reportedComparator
Verbatim
e0“G. barbadense L.”
e1“The highest seed cotton yield / fed. and yield components showed significant increase in the application of soil potassium humate (4 kg / fed. + spraying cotton plants potassium humate 2 g / L.).”
Claim · model-written summary
Potassium humate significantly increased fruiting branches, open bolls, boll weight, and seed cotton yield relative to control.
Verbatim
e0“G. barbadense L.”
e1“The application of potassium humate significantly increased number of fruiting branches, number of open bolls/plant, boll weight, seed cotton yield / fed., oil % and protein % in seeds of cotton as compared with the control treatment in both seasons.”
Claim · model-written summary
Potassium humate significantly increased cottonseed oil and protein percentages relative to control.
Verbatim
e0“G. barbadense L.”
e1“The application of potassium humate significantly increased number of fruiting branches, number of open bolls/plant, boll weight, seed cotton yield / fed., oil % and protein % in seeds of cotton as compared with the control treatment in both seasons.”
Claim · model-written summary
Treatments had no significant effects on lint percentage, earliness percentage, or fiber quality.
- Taxon
- G. barbadense L.e0
- Treatment
- Various treatmentse1
- Outcome
- lint %, earliness % and fiber qualitye1
- Direction
- insignificant effectse1
Not reportedComparator
Verbatim
e0“G. barbadense L.”
e1“Various treatments had insignificant effects on lint %, earliness % and fiber quality in both seasons.”
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