Abstract
Two field experiments were carried out at a Private Farm in Meet Habib Village, Gharbia Governorate, during Winter seasons of 2015/2016 and 2016/2017 to determine the influence of potassium fertilizers levels, foliar application treatments and interactions on growth, yield and some chemical constituents in both leaves and tubers of potato cv. Spunta. Mineral fertilizing with 75 % of the recommended doses recorded the highest values of vegetative growth characters, total marketable tubers yield/fed, total soluble solids percentage (TSS) and vitamin-C content in fresh potato in both seasons. While, the highest values of total carbohydrates and starch percentages, nitrite and nitrate concentrations in fresh potato tubers were obtained from fertilizing with 100 % of the recommended doses in both seasons. Total sugars percentage in fresh potato tubers had reverse trend of all studied characters in both seasons. Foliar spraying potato plants four times with commercial fertilizer (MegaPot as a source of nitrogen, potassium and sulphur) at the rate of 1.5 g/liter water exceeded other foliar application treatments and produced the highest values of vegetative growth characters, yield and quality parameters of tubers, except total sugars percentage, nitrite and nitrate concentrations in fresh potato tubers. It can be concluded that mineral fertilizing potato by 75 % of the recommended dose as a soil application in addition to foliar spraying four times with commercial fertilizer MegaPot (as a source of nitrogen, potassium and sulphur) at the rate of 1.5 g/liter water in each spraying is the best to obtain high growth, yield, chemical composition and quality of potato Spunta cultivar.
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Claims 5
Claim · model-written summary
Seventy-five percent of the recommended mineral fertilizer dose gave the highest vegetative growth, marketable yield, soluble solids, and vitamin C.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- Mineral fertilizing with 75 % of the recommended dosese0
- Outcome
- vegetative growth characters, total marketable tubers yield/fed, total soluble solids percentage (TSS) and vitamin-C contente0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mineral fertilizing with 75 % of the recommended doses recorded the highest values of vegetative growth characters, total marketable tubers yield/fed, total soluble solids percentage (TSS) and vitamin-C content in fresh potato in both seasons”
Claim · model-written summary
The full recommended dose gave the highest tuber carbohydrate, starch, nitrite, and nitrate values.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- fertilizing with 100 % of the recommended dosese0
- Outcome
- total carbohydrates and starch percentages, nitrite and nitrate concentrationse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest values of total carbohydrates and starch percentages, nitrite and nitrate concentrations in fresh potato tubers were obtained from fertilizing with 100 % of the recommended doses in both seasons”
Claim · model-written summary
Total tuber sugars followed the reverse trend of the other studied traits.
- Taxon
- potatoSolanum tuberosume0
- Outcome
- Total sugars percentagee0
- Direction
- reverse trende0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total sugars percentage in fresh potato tubers had reverse trend of all studied characters in both seasons”
Claim · model-written summary
Four foliar applications of MegaPot at 1.5 g/liter gave the highest vegetative growth, yield and tuber quality parameters except sugars, nitrite and nitrate.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- Foliar spraying potato plants four times with commercial fertilizer (MegaPot as a source of nitrogen, potassium and sulphur) at the rate of 1.5 g/liter watere0
- Outcome
- vegetative growth characters, yield and quality parameters of tuberse0
- Direction
- higheste0
- Qualifier
- except total sugars percentage, nitrite and nitrate concentrationse0
- Comparator
- other foliar application treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar spraying potato plants four times with commercial fertilizer (MegaPot as a source of nitrogen, potassium and sulphur) at the rate of 1.5 g/liter water exceeded other foliar application treatments and produced the highest values of vegetative growth characters, yield and quality parameters of tubers, except total sugars percentage, nitrite and nitrate concentrations in fresh potato tubers”
Claim · model-written summary
The authors recommend 75 percent mineral fertilizer plus four MegaPot sprays for Spunta growth, yield and quality.
- Taxon
- potatoSolanum tuberosume0
- Outcome
- mineral fertilizing potato by 75 % of the recommended dose as a soil application in addition to foliar spraying four times with commercial fertilizer MegaPot (as a source of nitrogen, potassium and sulphur) at the rate of 1.5 g/liter water in each sprayinge0
- Direction
- beste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mineral fertilizing potato by 75 % of the recommended dose as a soil application in addition to foliar spraying four times with commercial fertilizer MegaPot (as a source of nitrogen, potassium and sulphur) at the rate of 1.5 g/liter water in each spraying is the best to obtain high growth, yield, chemical composition and quality of potato Spunta cultivar”
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