Abstract
A field experiment was conducted on varietal response of white yam to moisture regime in Abeokuta. The experiment comprised three varieties of yam (Efuru, Ise-osi and Oniyere), three mulching options (grass, polythene and unmulched), and two planting dates (early and late). Treatments were replicated three times using RCBD lay-out. Model for selecting planting date involved relating potential evapotranspiration (PE) to precipitation (P) in the form of 0.1PE<P < 0.5PE, partitioned for attaining optimal planting date into early {T1= Σ(P-0.1PE) ≤ 0} and late {T2 = Σ(P-0.5PE) ≤ 0}, respectively. For humid period defined by P> PE, the physiological parameters and moisture agro-climatic indices measured during phenological stages of yam grown were analyzed with respect to treatments. Result showed that T1 defined as Σ(P-0.1PE) ≤ 10 mm appeared as the best model that significantly (P < 0.05) influenced emergence rate, phenological growth and tuber yield. All yam varieties evaluated were suitable for planting with respect to yield. Efuru and Ise-osi synchronized perfectly with Actual Water Availability and produced good vegetative growth with LAI of 1.08 and 0.91 leading to higher tuber yield of 12 and 11.64 tonnes ha-1, respectively. Grass mulch had tuber yield, 4-6 tonnes ha-1greater than the polythene and unmulched plots in all varieties. Mulching significantly (P< 0.05) increased tuber yield, 6-8 tonnes ha-1than the unmulched. Conclusively, early planting with grass mulch increased tuber yield.
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Claims 8
Claim · model-written summary
The early planting model significantly influenced emergence, phenological growth and tuber yield.
- Taxon
- yamt0
- Outcome
- emergence rate, phenological growth and tuber yielde0
- Direction
- best modele0
- Value
- 10 mme0
Not reportedComparator
Verbatim
e0“T1 defined as Σ(P-0.1PE) ≤ 10 mm appeared as the best model that significantly (P < 0.05) influenced emergence rate, phenological growth and tuber yield”
t0“yam varieties”
Claim · model-written summary
All evaluated yam varieties were suitable for planting by yield.
Not reportedDirection
Verbatim
e0“All yam varieties evaluated were suitable for planting with respect to yield”
Claim · model-written summary
Efuru synchronized with water availability and had LAI of 1.08.
Verbatim
e0“Efuru and Ise-osi synchronized perfectly with Actual Water Availability and produced good vegetative growth with LAI of 1.08 and 0.91 leading to higher tuber yield of 12 and 11.64 tonnes ha-1, respectively”
t0“yam varieties”
Claim · model-written summary
Ise-osi synchronized with water availability and had LAI of 0.91.
Verbatim
e0“Efuru and Ise-osi synchronized perfectly with Actual Water Availability and produced good vegetative growth with LAI of 1.08 and 0.91 leading to higher tuber yield of 12 and 11.64 tonnes ha-1, respectively”
t0“yam varieties”
Claim · model-written summary
Efuru had tuber yield of 12 tonnes ha-1.
Verbatim
e0“Efuru and Ise-osi synchronized perfectly with Actual Water Availability and produced good vegetative growth with LAI of 1.08 and 0.91 leading to higher tuber yield of 12 and 11.64 tonnes ha-1, respectively”
t0“yam varieties”
Claim · model-written summary
Ise-osi had tuber yield of 11.64 tonnes ha-1.
Verbatim
e0“Efuru and Ise-osi synchronized perfectly with Actual Water Availability and produced good vegetative growth with LAI of 1.08 and 0.91 leading to higher tuber yield of 12 and 11.64 tonnes ha-1, respectively”
t0“yam varieties”
Claim · model-written summary
Grass mulch gave 4-6 tonnes ha-1 more tuber yield than polythene and no mulch.
Verbatim
e0“Grass mulch had tuber yield, 4-6 tonnes ha-1greater than the polythene and unmulched plots in all varieties”
t0“yam varieties”
Claim · model-written summary
Mulching significantly increased tuber yield by 6-8 tonnes ha-1 over no mulch.
Verbatim
e0“Mulching significantly (P< 0.05) increased tuber yield, 6-8 tonnes ha-1than the unmulched”
t0“yam varieties”
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