Optimization of Seed Potato Specific Density, Starch and Dry Matter Contents and Tuberization Capacity of Resultant Plants Through Integrated Irrigation, Nitrogen and Phosphorus Management

Gathungu Geofrey Kingori; Aguyoh Joseph Nyamori; Isutsa Dorcas Khasungu

doi:doi:10.11648/j.jps.20150304.19

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Optimization of Seed Potato Specific Density, Starch and Dry Matter Contents and Tuberization Capacity of Resultant Plants Through Integrated Irrigation, Nitrogen and Phosphorus Management

Gathungu Geofrey Kingori, Aguyoh Joseph Nyamori, Isutsa Dorcas Khasungu

Published in Journal of Plant Sciences (Volume 3, Issue 4)

Received: 15 July 2015 Accepted: 23 July 2015 Published: 1 August 2015

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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.

Published in	Journal of Plant Sciences (Volume 3, Issue 4)
DOI	10.11648/j.jps.20150304.19
Page(s)	225-233
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Potato, Irrigation, Nitrogen, Phosphorus, Seed Quality, Resultant Plants, Tuberization

References

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[3]	Singh, HP. (2008). Policies and Strategies Conducive to Potato Development in Asia and the Pacific Region. In Proceedings of the Workshop to Commemorate the International Year of the Potato - 2008, held at FAO, Bangkok, Thailand, 6 May 2008. FAO RAP Publication 2008/07, pp. 18-29.
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[14]	Gruhn, P., Goletti, F. and Yudelman, M. (2000). Integrated nutrient management, soil fertility, and sustainable agriculture: Current issues and future challenges. Food, Agriculture, and the Environment Discussion Paper 32, International Food Policy Research Institute, Washington, D.C.
[15]	Cakmak, I. (2002). Plant nutrition research priorities to meet human needs for food in sustainable ways. Plant Soil 247:3–24.
[16]	Thompson, AJ., King, JA., Smith, KA. and Don, HT. (2007). Opportunities for reducing water use in agriculture. Defra Research Project Final Report for WU0101.
[17]	DPI. 2010. Potatoes: Measurement of Specific Gravity. Department of Primary Industries, 1 Spring Street Melbourne, Victoria, Australia ISSN1329-8062. Accessed on 28.2.2013, at: http://www.dpi.vic.gov.au/agriculture/horticulture/vegetables/potatoes/potatoes-measurement-specific-gravity.
[18]	Kawano, KF., Goncalvez, WM and Cenpukdee, U. (1987). Genetic and environmental effects on dry matter content of cassava root. Crop Science, 27:69-74.
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[23]	Burt, WG. (1989). Varietal differences in growth, yield of tubers and percentage of dry matter in the tubers. In: Burt, WG. (Ed.). The Potato. Longman Scientific and Technical: Harlow, UK, pp. 142-215.
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Gathungu Geofrey Kingori, Aguyoh Joseph Nyamori, Isutsa Dorcas Khasungu. (2015). Optimization of Seed Potato Specific Density, Starch and Dry Matter Contents and Tuberization Capacity of Resultant Plants Through Integrated Irrigation, Nitrogen and Phosphorus Management. Journal of Plant Sciences, 3(4), 225-233. https://doi.org/10.11648/j.jps.20150304.19

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ACS Style

Gathungu Geofrey Kingori; Aguyoh Joseph Nyamori; Isutsa Dorcas Khasungu. Optimization of Seed Potato Specific Density, Starch and Dry Matter Contents and Tuberization Capacity of Resultant Plants Through Integrated Irrigation, Nitrogen and Phosphorus Management. J. Plant Sci. 2015, 3(4), 225-233. doi: 10.11648/j.jps.20150304.19

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AMA Style

Gathungu Geofrey Kingori, Aguyoh Joseph Nyamori, Isutsa Dorcas Khasungu. Optimization of Seed Potato Specific Density, Starch and Dry Matter Contents and Tuberization Capacity of Resultant Plants Through Integrated Irrigation, Nitrogen and Phosphorus Management. J Plant Sci. 2015;3(4):225-233. doi: 10.11648/j.jps.20150304.19

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@article{10.11648/j.jps.20150304.19,
  author = {Gathungu Geofrey Kingori and Aguyoh Joseph Nyamori and Isutsa Dorcas Khasungu},
  title = {Optimization of Seed Potato Specific Density, Starch and Dry Matter Contents and Tuberization Capacity of Resultant Plants Through Integrated Irrigation, Nitrogen and Phosphorus Management},
  journal = {Journal of Plant Sciences},
  volume = {3},
  number = {4},
  pages = {225-233},
  doi = {10.11648/j.jps.20150304.19},
  url = {https://doi.org/10.11648/j.jps.20150304.19},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jps.20150304.19},
  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.},
 year = {2015}
}

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TY  - JOUR
T1  - Optimization of Seed Potato Specific Density, Starch and Dry Matter Contents and Tuberization Capacity of Resultant Plants Through Integrated Irrigation, Nitrogen and Phosphorus Management
AU  - Gathungu Geofrey Kingori
AU  - Aguyoh Joseph Nyamori
AU  - Isutsa Dorcas Khasungu
Y1  - 2015/08/01
PY  - 2015
N1  - https://doi.org/10.11648/j.jps.20150304.19
DO  - 10.11648/j.jps.20150304.19
T2  - Journal of Plant Sciences
JF  - Journal of Plant Sciences
JO  - Journal of Plant Sciences
SP  - 225
EP  - 233
PB  - Science Publishing Group
SN  - 2331-0731
UR  - https://doi.org/10.11648/j.jps.20150304.19
AB  - 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.
VL  - 3
IS  - 4
ER  -

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Author Information

Gathungu Geofrey Kingori

Department of Plant Science, Chuka University, Chuka, Kenya
Aguyoh Joseph Nyamori

Department of Crops, Horticulture and Soils, Egerton University, Egerton, Kenya; School of Agriculture, Natural Resources & Environmental Studies, Rongo University College, Rongo, Kenya
Isutsa Dorcas Khasungu

Department of Plant Science, Chuka University, Chuka, Kenya; Department of Crops, Horticulture and Soils, Egerton University, Egerton, Kenya

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Gathungu Geofrey Kingori, Aguyoh Joseph Nyamori, Isutsa Dorcas Khasungu. (2015). Optimization of Seed Potato Specific Density, Starch and Dry Matter Contents and Tuberization Capacity of Resultant Plants Through Integrated Irrigation, Nitrogen and Phosphorus Management. Journal of Plant Sciences, 3(4), 225-233. https://doi.org/10.11648/j.jps.20150304.19

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ACS Style

Gathungu Geofrey Kingori; Aguyoh Joseph Nyamori; Isutsa Dorcas Khasungu. Optimization of Seed Potato Specific Density, Starch and Dry Matter Contents and Tuberization Capacity of Resultant Plants Through Integrated Irrigation, Nitrogen and Phosphorus Management. J. Plant Sci. 2015, 3(4), 225-233. doi: 10.11648/j.jps.20150304.19

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AMA Style

Gathungu Geofrey Kingori, Aguyoh Joseph Nyamori, Isutsa Dorcas Khasungu. Optimization of Seed Potato Specific Density, Starch and Dry Matter Contents and Tuberization Capacity of Resultant Plants Through Integrated Irrigation, Nitrogen and Phosphorus Management. J Plant Sci. 2015;3(4):225-233. doi: 10.11648/j.jps.20150304.19

Copy | Download

@article{10.11648/j.jps.20150304.19,
  author = {Gathungu Geofrey Kingori and Aguyoh Joseph Nyamori and Isutsa Dorcas Khasungu},
  title = {Optimization of Seed Potato Specific Density, Starch and Dry Matter Contents and Tuberization Capacity of Resultant Plants Through Integrated Irrigation, Nitrogen and Phosphorus Management},
  journal = {Journal of Plant Sciences},
  volume = {3},
  number = {4},
  pages = {225-233},
  doi = {10.11648/j.jps.20150304.19},
  url = {https://doi.org/10.11648/j.jps.20150304.19},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jps.20150304.19},
  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.},
 year = {2015}
}

Copy | Download

TY  - JOUR
T1  - Optimization of Seed Potato Specific Density, Starch and Dry Matter Contents and Tuberization Capacity of Resultant Plants Through Integrated Irrigation, Nitrogen and Phosphorus Management
AU  - Gathungu Geofrey Kingori
AU  - Aguyoh Joseph Nyamori
AU  - Isutsa Dorcas Khasungu
Y1  - 2015/08/01
PY  - 2015
N1  - https://doi.org/10.11648/j.jps.20150304.19
DO  - 10.11648/j.jps.20150304.19
T2  - Journal of Plant Sciences
JF  - Journal of Plant Sciences
JO  - Journal of Plant Sciences
SP  - 225
EP  - 233
PB  - Science Publishing Group
SN  - 2331-0731
UR  - https://doi.org/10.11648/j.jps.20150304.19
AB  - 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.
VL  - 3
IS  - 4
ER  -

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