Abstract
Potatoes require high amounts of potassium (K) and nitrogen (N) fertilizers for optimum growth, production and tuber quality. Farmers and farming industries under the arid conditions and sandy soils of Saudi Arabia are applying K and N fertilizers to potatoes without attention to plant requirements. Therefore, five levels of potassium fertilizer were studied on agronomic performance, tuber quality and total yield of potatoes grown on a sandy soil in the arid environment of Central Saudi Arabia. Also, the effect of four levels of nitrogen fertilizer with different splitting methods on vegetative and tuber yields of potato were studied. The field experiments were carried out during 2002 and 2003 autumn seasons at the Experimental Farm of College of Agric. &Vet. Med., Al-Qassim University. Results reveled that increasing potassium sulfate rates resulted in a significant increase (p>0.05) in plant height, leaf area, chlorophyll concentration, specific gravity, K concentration and carbohydrate content. Marketable tuber yield was also significantly improved with increasing K rates. Also, the application of 300 kg Nha -1 split in three equal doses gave the highest percentage of soil coverage and marketable tuber yield. Under the conditions of this experiment, it is concluded that K and N is needed by potatoes for economic yield. The recommended rate for Al-Qassim and similar regions is 450 kg ha -1 potassium sulfate and 300 kg Nha -1 split in three equal doses which resulted in the highest potatoes yield.
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Claims 6
Claim · model-written summary
Increasing potassium sulfate rates increased plant height, leaf area and chlorophyll concentration of potato
- Taxon
- potato
Solanum tuberosume0 - Treatment
- increasing potassium sulfate ratese1
- Outcome
- plant height, leaf area, chlorophyll concentratione1
- Direction
- increasee1
- Setting
- sandy soil in the arid environment of Central Saudi Arabiae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potatoes grown on a sandy soil in the arid environment of Central Saudi Arabia”
e1“Results reveled that increasing potassium sulfate rates resulted in a significant increase (p>0.05) in plant height, leaf area, chlorophyll concentration, specific gravity, K concentration and carbohydrate content”
Claim · model-written summary
Increasing potassium sulfate rates increased specific gravity, K concentration and carbohydrate content of potato
- Taxon
- potatoSolanum tuberosume0
- Treatment
- increasing potassium sulfate ratese1
- Outcome
- specific gravity, K concentration and carbohydrate contente1
- Direction
- increasee1
- Setting
- sandy soil in the arid environment of Central Saudi Arabiae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potatoes grown on a sandy soil in the arid environment of Central Saudi Arabia”
e1“Results reveled that increasing potassium sulfate rates resulted in a significant increase (p>0.05) in plant height, leaf area, chlorophyll concentration, specific gravity, K concentration and carbohydrate content”
Claim · model-written summary
Marketable tuber yield of potato improved significantly with increasing K rates
- Taxon
- potatoSolanum tuberosume0
- Treatment
- increasing K ratese2
- Outcome
- Marketable tuber yielde2
- Direction
- improvede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potatoes grown on a sandy soil in the arid environment of Central Saudi Arabia”
e2“Marketable tuber yield was also significantly improved with increasing K rates”
Claim · model-written summary
300 kg N/ha split in three equal doses gave the highest soil coverage and marketable tuber yield of potato
- Taxon
- potatoSolanum tuberosume0
- Treatment
- 300 kg Nha -1 split in three equal dosese3
- Outcome
- percentage of soil coverage and marketable tuber yielde3
- Direction
- higheste3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potatoes grown on a sandy soil in the arid environment of Central Saudi Arabia”
e3“the application of 300 kg Nha -1 split in three equal doses gave the highest percentage of soil coverage and marketable tuber yield”
Claim · model-written summary
Potato needs K and N for economic yield under the conditions of this experiment
- Taxon
- potatoesSolanum tuberosume4
- Outcome
- K and N is needed by potatoes for economic yielde4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Under the conditions of this experiment, it is concluded that K and N is needed by potatoes for economic yield”
Claim · model-written summary
The recommended rate for Al-Qassim and similar regions is 450 kg ha -1 potassium sulfate with 300 kg Nha -1 split in three equal doses
- Taxon
- potatoesSolanum tuberosume5
- Outcome
- recommended rate for Al-Qassim and similar regionse5
- Value
- 450 kg ha -1 potassium sulfatee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“The recommended rate for Al-Qassim and similar regions is 450 kg ha -1 potassium sulfate and 300 kg Nha -1 split in three equal doses which resulted in the highest potatoes yield”
The same questions in other papers
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See all 14 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.