Abstract
A study was conducted in a Rainshelter (RTrial) at the Horticultural Research and Teaching Farm of Egerton University to determine the effect of integrated application of irrigation water, nitrogen (N) and phosphorus (P) on seed potato physiological quality and performance of plants resulting from them. The treatments arranged in a split-split plot in a completely randomized block design, consisted of three irrigation water rates (40%, 65% and 100% field capacity), four N rates (0, 75, 112.5 and 150 kg N/ha) supplied as urea (46% N), and four P rates (0, 50.6, 75.9, 101.2 kg P/ha) supplied as triple superphosphate with experiment replicated three times and repeated once. After harvest seed specific density, starch and dry matter contents were determined after which 15 seed tubers per treatment were stored for 90 days under diffuse-light sprouting conditions for postharvest (PTrial) evaluation. Later, three potato tubers were selected per treatment and planted to study growth vigour and tuberization capacity of resultant potato plants both in PTrials I and II. Data collected were subjected to analysis of variance and significantly different means were separated using Tukey’s Studentized Range Test at P=0.05. Specific density, starch and dry matter contents increased from 40% to 65% irrigation water. Application of irrigation water beyond 65% reduced the specific density, starch and dry matter contents by 0.03, 2.6%, 3.7% and 0.04, 3.7%, 5.2% in RTrials I and II, respectively. The 100% compared to 65% irrigation rate reduced post-treatment evaluation stem number, density and height at 57 DAP by 1.3 and 1.1, 15.1 and 12.6, and 13.4 cm and 10.3 cm, and tuberization capacity in resultant plants by 5 and 8.7 tubers, in PTrials I and II, respectively. Application of N and P significantly increased seed potato specific density, starch and dry matter contents but application of N and P beyond 112.5 kg N/ha and 75.9 kg P/ha respectively reduced the same both in RTrials I and II, respectively. In postharvest evaluation integration of N at 0 to 112.5 kg N/ha with 65% irrigation rate increased the number of tubers produced by the resultant plants by 3.4 and 5.4, while high P rate at 75.9 kg P/ha increased tuberization by 8.4 and 10.7, in RTrials I and II, respectively. Integration of 65% irrigation rate, 112.5 kg N/ha and 75.9 kg P/ha rates optimized potato growth, and vigour of resulting potato plants.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 13
Claim · model-written summary
Seed potato specific density, starch and dry matter contents increased from 40% to 65% irrigation.
Verbatim
e0“Specific density, starch and dry matter contents increased from 40% to 65% irrigation water.”
t0“Seed Potato”
Claim · model-written summary
Irrigation above 65% reduced seed specific density by 0.03 and 0.04 in the two trials.
Verbatim
e0“Application of irrigation water beyond 65% reduced the specific density, starch and dry matter contents by 0.03, 2.6%, 3.7% and 0.04, 3.7%, 5.2% in RTrials I and II, respectively.”
t0“Seed Potato”
Claim · model-written summary
Irrigation above 65% reduced seed starch by 2.6% and 3.7% in the two trials.
Verbatim
e0“Application of irrigation water beyond 65% reduced the specific density, starch and dry matter contents by 0.03, 2.6%, 3.7% and 0.04, 3.7%, 5.2% in RTrials I and II, respectively.”
t0“Seed Potato”
Claim · model-written summary
Irrigation above 65% reduced seed dry matter by 3.7% and 5.2% in the two trials.
Verbatim
e0“Application of irrigation water beyond 65% reduced the specific density, starch and dry matter contents by 0.03, 2.6%, 3.7% and 0.04, 3.7%, 5.2% in RTrials I and II, respectively.”
t0“Seed Potato”
Claim · model-written summary
Full irrigation reduced subsequent stem number relative to 65% irrigation.
Verbatim
e0“The 100% compared to 65% irrigation rate reduced post-treatment evaluation stem number, density and height at 57 DAP by 1.3 and 1.1, 15.1 and 12.6, and 13.4 cm and 10.3 cm”
t0“Seed Potato”
Claim · model-written summary
Full irrigation reduced subsequent stem density relative to 65% irrigation.
Verbatim
e0“The 100% compared to 65% irrigation rate reduced post-treatment evaluation stem number, density and height at 57 DAP by 1.3 and 1.1, 15.1 and 12.6, and 13.4 cm and 10.3 cm”
t0“Seed Potato”
Claim · model-written summary
Full irrigation reduced subsequent stem height relative to 65% irrigation.
Verbatim
e0“The 100% compared to 65% irrigation rate reduced post-treatment evaluation stem number, density and height at 57 DAP by 1.3 and 1.1, 15.1 and 12.6, and 13.4 cm and 10.3 cm”
t0“Seed Potato”
Claim · model-written summary
Full irrigation reduced tuberization capacity by 5 and 8.7 tubers in the two trials.
Not reportedTreatmentComparatorDirection
Verbatim
e0“tuberization capacity in resultant plants by 5 and 8.7 tubers, in PTrials I and II, respectively”
t0“Seed Potato”
Claim · model-written summary
Nitrogen and phosphorus increased seed specific density, starch and dry matter.
- Taxon
- seed potatoe0
- Treatment
- N and Pe0
- Outcome
- specific density, starch and dry matter contentse0
- Direction
- increasede0
Not reportedComparator
Verbatim
e0“Application of N and P significantly increased seed potato specific density, starch and dry matter contents”
t0“Seed Potato”
Claim · model-written summary
Nitrogen and phosphorus above 112.5 kg N/ha and 75.9 kg P/ha reduced those quality traits.
- Taxon
- Seed Potatot0
- Treatment
- N and P beyond 112.5 kg N/ha and 75.9 kg P/hae0
- Outcome
- the samee0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“application of N and P beyond 112.5 kg N/ha and 75.9 kg P/ha respectively reduced the same both in RTrials I and II”
t0“Seed Potato”
Claim · model-written summary
Integrating nitrogen up to 112.5 kg N/ha with 65% irrigation increased resulting tuber number by 3.4 and 5.4.
- Taxon
- Seed Potatot0
- Treatment
- N at 0 to 112.5 kg N/ha with 65% irrigation ratee0
- Outcome
- number of tubers produced by the resultant plantse0
- Direction
- increasede0
- Value
- 3.4 and 5.4e0
Not reportedComparator
Verbatim
e0“integration of N at 0 to 112.5 kg N/ha with 65% irrigation rate increased the number of tubers produced by the resultant plants by 3.4 and 5.4”
t0“Seed Potato”
Claim · model-written summary
A 75.9 kg P/ha rate increased tuberization by 8.4 and 10.7.
- Taxon
- Seed Potatot0
- Treatment
- P rate at 75.9 kg P/hae0
- Outcome
- tuberizatione0
- Direction
- increasede0
- Value
- 8.4 and 10.7e0
Not reportedComparator
Verbatim
e0“high P rate at 75.9 kg P/ha increased tuberization by 8.4 and 10.7”
t0“Seed Potato”
Claim · model-written summary
The combination of 65% irrigation, 112.5 kg N/ha and 75.9 kg P/ha optimized growth and vigour.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- 65% irrigation rate, 112.5 kg N/ha and 75.9 kg P/ha ratese0
- Outcome
- potato growth, and vigoure0
- Direction
- optimizede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Integration of 65% irrigation rate, 112.5 kg N/ha and 75.9 kg P/ha rates optimized potato growth, and vigour of resulting potato plants.”
The same questions in other papers
irrigation · yield · Solanum tuberosum (potato)Results differ
74 papers in the same direction as this paper · 16 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- negative
88 papers more in this group
See all 92 papers →nitrogen · yield · Solanum tuberosum (potato)Results differ
108 papers in the same direction as this paper · 20 in the opposite direction · 3 reporting no difference from an alternative
- no effect
- negative
- negative
128 papers more in this group
See all 132 papers →irrigation · quality: sugar starch · Solanum tuberosum (potato)Positive and negative results
5 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- negative
5 papers more in this group
See all 9 papers →nitrogen · quality: sugar starch · Solanum tuberosum (potato)Positive and negative results
4 papers in the same direction as this paper · 5 in the opposite direction
- negative
- negative
- negative
6 papers more in this group
See all 10 papers →irrigation · growth · Solanum tuberosum (potato)Positive and negative results
20 papers in the same direction as this paper · 11 in the opposite direction · 2 reporting no difference from an alternative
- negative
- negative
- no effect
30 papers more in this group
See all 34 papers →nitrogen · growth · Solanum tuberosum (potato)Positive and negative results
37 papers in the same direction as this paper · 13 in the opposite direction
- negative
- negative
- negative
47 papers more in this group
See all 51 papers →phosphorus · quality: sugar starch · Solanum tuberosum (potato)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.