Application of rainfall- potential evapotranspiration model for determining optimum planting date of yam (Dioscorea rotundata) in a tropical wet-and-dry climate

1
Adeyinka Olubunmi
Adeyinka Olubunmi
2
Dr. Eruola
Dr. Eruola
3
A.O.
A.O.
4
Bello
Bello
5
N. J.
N. J.
6
G.C. Ufoegbune
G.C. Ufoegbune
7
Makinde
Makinde
8
A.A
A.A
1 Federal University of Agriculture, Abeokuta, Nigeria
4 Kwara State University, Malete

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Application of rainfall- potential evapotranspiration model for determining optimum planting date of yam (Dioscorea rotundata) in a tropical wet-and-dry climate Banner
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The application of Rainfall-Potential evapotrans piration (P -PE) model to yam (Dioscorea rotundata) production was carried out in an on-farm yam trial during the 2006-2007 and 2007-2008 cropping seasons in Abeokuta, South-western Nigeria. The experiment was a 3 x 2 factorial arrangement of three varieties of yam (Efuru, Ise-osi and Oniyere), two planting dates (early and late). The resulting 6 treatments were replicated three times with 14 mounds in each plot, in randomized complete block design. The general model for selecting the planting date of each yam cultivar in the two experimental years was 0.1PE PE, the physiological parameters and hydrothermal agro-climatic indices measured during the different phenological stages of yam grown were analyzed with respect to the various treatments. The result showed that model T 1 defined as Σ(P-0.1PE) ≤ 10mm appeared as the best model that significantly (P < 0.05) influenced emergence rate, phenological growth and tuber yield. The implications of the study for appropriate schedule of farm operations vis-à-vis agronomic practices for yam cultivation have been noted.

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No external funding was declared for this work.

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The authors declare no conflict of interest.

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No ethics committee approval was required for this article type.

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Not applicable for this article.

Adeyinka Olubunmi. 2012. \u201cApplication of rainfall- potential evapotranspiration model for determining optimum planting date of yam (Dioscorea rotundata) in a tropical wet-and-dry climate\u201d. Global Journal of Science Frontier Research - D: Agriculture & Veterinary GJSFR-D Volume 12 (GJSFR Volume 12 Issue D5): .

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GJSFR Volume 12 Issue D5
Pg. 53- 58
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Crossref Journal DOI 10.17406/GJSFR

Print ISSN 0975-5896

e-ISSN 2249-4626

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v1.2

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May 5, 2012

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English

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The application of Rainfall-Potential evapotrans piration (P -PE) model to yam (Dioscorea rotundata) production was carried out in an on-farm yam trial during the 2006-2007 and 2007-2008 cropping seasons in Abeokuta, South-western Nigeria. The experiment was a 3 x 2 factorial arrangement of three varieties of yam (Efuru, Ise-osi and Oniyere), two planting dates (early and late). The resulting 6 treatments were replicated three times with 14 mounds in each plot, in randomized complete block design. The general model for selecting the planting date of each yam cultivar in the two experimental years was 0.1PE PE, the physiological parameters and hydrothermal agro-climatic indices measured during the different phenological stages of yam grown were analyzed with respect to the various treatments. The result showed that model T 1 defined as Σ(P-0.1PE) ≤ 10mm appeared as the best model that significantly (P < 0.05) influenced emergence rate, phenological growth and tuber yield. The implications of the study for appropriate schedule of farm operations vis-à-vis agronomic practices for yam cultivation have been noted.

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Application of rainfall- potential evapotranspiration model for determining optimum planting date of yam (Dioscorea rotundata) in a tropical wet-and-dry climate

Dr. Eruola
Dr. Eruola
A.O.
A.O.
Bello
Bello Kwara State University, Malete
N. J.
N. J.
G.C. Ufoegbune
G.C. Ufoegbune
Makinde
Makinde
A.A
A.A

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