Abstract
Field experiments were conducted for two consecutive seasons at NARC potato research area Islamabad, Pakistan, to study comparative effect of source, levels and methods of K fertilization on yield and quality of potato produce. Nitrogen and phosphorus were applied at 250 and 125 kg ha -1 , respectively whereas three K2O levels, 0, 150 and 225 kg ha -1 from two sources of potash (SOP and MOP) were tested. Potassium was also applied as foliar spray at 1% K2O solution at 30, 45 and 60 days after germination (DAG) and soil was also amended by 150 kg K2O ha -1 . A significant increase in tuber yield with K application at 150 kg ha -1 as K2O from both the K sources over NP treatment was recorded. Increase in tuber yield with K2O @ 225 kg ha -1 was statistically nonsignificant compared to 150 kg K2O ha -1 . A positive interaction between soil applied P and K with N in plant system was observed. Potassium treatments not only increased K concentration but also affected N and P contents in potato tubers. The quality parameters like dry matter, specific gravity, starch contents, vitamin-C and ash contents were also affected with P and K fertilization.
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Claims 7
Claim · model-written summary
Potassium at 150 kg ha -1 as K2O significantly raised tuber yield over NP for both sources.
- Taxon
- POTATO
Solanum tuberosumt0 - Treatment
- K application at 150 kg ha -1 as K2Oe0
- Outcome
- tuber yielde0
- Direction
- increasee0
- Comparator
- NP treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A significant increase in tuber yield with K application at 150 kg ha -1 as K2O from both the K sources over NP treatment was recorded”
t0“EFFECT OF SOURCE AND LEVEL OF POTASH ON YIELD AND QUALITY OF POTATO TUBERS”
Claim · model-written summary
Increasing K2O to 225 kg ha -1 did not significantly raise yield beyond 150 kg K2O ha -1.
- Taxon
- POTATOSolanum tuberosumt0
- Treatment
- K2O @ 225 kg ha -1e0
- Outcome
- tuber yielde0
- Direction
- Increasee0
- Comparator
- 150 kg K2O ha -1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increase in tuber yield with K2O @ 225 kg ha -1 was statistically nonsignificant compared to 150 kg K2O ha -1”
t0“EFFECT OF SOURCE AND LEVEL OF POTASH ON YIELD AND QUALITY OF POTATO TUBERS”
Claim · model-written summary
Soil applied P and K showed positive interaction with N in the plant system.
- Taxon
- POTATOSolanum tuberosumt0
- Treatment
- soil applied P and K with Ne0
- Outcome
- positive interactione0
- Direction
- positivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A positive interaction between soil applied P and K with N in plant system was observed”
t0“EFFECT OF SOURCE AND LEVEL OF POTASH ON YIELD AND QUALITY OF POTATO TUBERS”
Claim · model-written summary
Potassium treatments increased tuber K concentration.
- Taxon
- POTATOSolanum tuberosumt0
- Treatment
- Potassium treatmentse0
- Outcome
- K concentratione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potassium treatments not only increased K concentration but also affected N and P contents in potato tubers”
t0“EFFECT OF SOURCE AND LEVEL OF POTASH ON YIELD AND QUALITY OF POTATO TUBERS”
Claim · model-written summary
Potassium treatments affected tuber N and P contents.
- Taxon
- POTATOSolanum tuberosumt0
- Treatment
- Potassium treatmentse0
- Outcome
- N and P contents in potato tuberse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potassium treatments not only increased K concentration but also affected N and P contents in potato tubers”
t0“EFFECT OF SOURCE AND LEVEL OF POTASH ON YIELD AND QUALITY OF POTATO TUBERS”
Claim · model-written summary
P and K fertilisation affected dry matter, specific gravity and starch content.
- Taxon
- POTATOSolanum tuberosumt0
- Treatment
- P and K fertilizatione0
- Outcome
- dry matter, specific gravity, starch contentse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The quality parameters like dry matter, specific gravity, starch contents, vitamin-C and ash contents were also affected with P and K fertilization”
t0“EFFECT OF SOURCE AND LEVEL OF POTASH ON YIELD AND QUALITY OF POTATO TUBERS”
Claim · model-written summary
P and K fertilisation affected vitamin C and ash contents.
- Taxon
- POTATOSolanum tuberosumt0
- Treatment
- P and K fertilizatione0
- Outcome
- vitamin-C and ash contentse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The quality parameters like dry matter, specific gravity, starch contents, vitamin-C and ash contents were also affected with P and K fertilization”
t0“EFFECT OF SOURCE AND LEVEL OF POTASH ON YIELD AND QUALITY OF POTATO TUBERS”
The same questions in other papers
potassium · yield · Solanum tuberosum (potato)Results differ
60 papers in the same direction as this paper · 6 in the opposite direction · 2 reporting no difference from an alternative
- no effect
- positive
- positive
65 papers more in this group
See all 69 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.