Climate and the Growth of Sorghum at Kabba, Nigeria

Olaniran, O. J.; Babatolu, Joseph Sunday

doi:10.2480/agrmet.42.301

Cited by 8 publications

(6 citation statements)

References 12 publications

(12 reference statements)

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“…Temperature varied between 26 and 308C in both seasons ( Fig. 1) and was similar in its distribution to that found elsewhere in the savanna region (7849'N, 6803'E) of Nigeria (Olaniran and Babatolu, 1987). Furthermore temperature distribution during each phenological stage showed that temperature was higher during the establishment,¯owering and grain®lling periods than during the vegetative period.…”

Section: Resultssupporting

confidence: 75%

“…Since the yield of sorghum increases with the duration of the growing season (Kassam, 1976), the increasing demand for grain sorghum in Nigeria (Olaniran and Babatolu, 1987) would be met substantially if the full length of the rainy season in the entire forest±savanna transition zone was exploited for the cultivation of early and late maturing sorghum cultivars.…”

Section: Discussionmentioning

confidence: 99%

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An Investigation of the Agroclimatic Potential of the Forest–savanna Transition Zone of Nigeria for the Cultivation of Sorghum

Bello

1997

Ex. Agric.

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The agroclimatic potential of the forest±savanna transition zone of Nigeria for the cultivation of sorghum (Sorghum bicolor) was investigated. Five phenological stages of the crop formed the basic unit of time for the investigation. Selected agroclimatological thermal and moisture indices were measured daily and processed into ten-day (decadal) averages for the 1993 and 1994 cropping seasons. The thermal indices, temperature and photoperiods were optimal for sorghum growth but, on the basis of the distribution of rainfall and actual water availability in relation to the crop's water consumption, the moisture indices were above optimum. However by relating eective water availability to the indices of moisture adequacy for the growth of the crop, it was found that the agroclimatological moisture indices were optimum during the moisture sensitive stages. A comparison of the vegetative growth and grain yield of sorghum in the study area and elsewhere in the savanna region con®rmed the agroclimatic potential of the forest±savanna transition zone for sorghum production.

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Section: Resultssupporting

confidence: 75%

Section: Discussionmentioning

confidence: 99%

An Investigation of the Agroclimatic Potential of the Forest–savanna Transition Zone of Nigeria for the Cultivation of Sorghum

Bello

1997

Ex. Agric.

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“…In Kabba, south-central Nigeria, during the period from 1977 to 1984, water available from rainfall during the total growing season of sorghum averaged 117% of the water required. However, while the water supply during the phase of vegetative growth exceeded the requirement by >120%, the water available during the phase of flowering was only 30% of the requirement, and the water available during the phase of grain filling was 8% (Olaniran & Babatolu 1987).…”

Section: Analysis Of Datamentioning

confidence: 99%

“…Each phase also requires different environmental conditions for optimum performance of the crop plant. For example, water consumption by sorghum varies considerably between phases, calling for different amounts of rainfall (Olaniran & Babatolu 1987). In Kabba, south-central Nigeria, during the period from 1977 to 1984, water available from rainfall during the total growing season of sorghum averaged 117% of the water required.…”

Section: Analysis Of Datamentioning

confidence: 99%

Food crop production in Nigeria. I. Present effects of climate variability

Adejuwon¹

2005

Clim. Res.

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Climate and crop productivity are both characterised by inter-annual variability. The common understanding is that the co-variation is indicative of a simple cause and effect relationship. However, the relationship analysed in this paper is that of crops with complex phases of growth and development responding to a climate that is multivariate, dynamic and heterogeneous. Bivariate correlation, multiple correlation and regression analyses were employed to demonstrate the relationship between crop yield and climate. The crops studied were cowpeas, groundnut, millet, maize, sorghum and rice during the period 1983 to 1999 in the Nigerian Arid Zone. The predictive models generated for cowpeas, groundnut, millet and sorghum were statistically significant with α ≤ 0.05. Among the more powerful determinants of crop yield were rainfall at the onset and at the cessation months of the growing season. Inter-annual changes in the yield of maize and rice were less sensitive to rainfall variability. In general, the linear models failed to incorporate the separation of crop yield variability from rainfall at higher levels of precipitation. During the long periods with normal and above normal rainfall, crop yield sensitivity tends to be weak. However, during the years with unusually low precipitation, crop yield sensitivity becomes more pronounced. For purposes of developing the appropriate adaptation strategies, it is suggested that a distinction be made between drought with its associated disasters and the less hazardous but more frequent inter-annual climate or rainfall variability. KEY WORDS: Impact · Climate variability · Crop yield · Arid zoneResale or republication not permitted without written consent of the publisher

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“…These variations have strong societal impacts on agriculture, water resource management, transportation, and health (Sultan and Janicot, 2003). Monsoon peak coincides with the occurrence of an annual little dry season popularly known as "August-break" (Olaniran and Babatolu, 1987) in some southern parts of Nigeria. August-break is termed a growing period during which conditions are favorable for weeding (Olaniran, 1988) and or spraying of crops with insecticides and pesticides (Osunade, 1994).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the ECMWF Sub-seasonal to Seasonal Precipitation Forecasts during the Peak of West Africa Monsoon in Nigeria

Olaniyan

Adefisan

Oni

et al. 2018

Front. Environ. Sci.

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Motivated by the increasing needs for reliable seasonal climate forecasts for enhanced living and protection of property, this study evaluates the predictive skill of the European Center for Medium-range Weather Forecast's Sub-seasonal to Seasonal (ECMWF-S2S) precipitation forecasts during the peak of West Africa Monsoon in Nigeria. It investigates the ability of the ECMWF-S2S model to reproduce the atmospheric dynamics that influence the monsoon variability in West-Africa. Rain gauge values of 46 meteorological stations and 10-member ensemble of ECMWF-S2S forecasts from the Ensemble Prediction System (EPS) version of the ECMWF were subjected to quantitative statistical analyses. Results show that the model has weak capability in predicting wind strength at 700 mb level to depict the African Easterly Jet (AEJ). However, irrespective of the ENSO phases, ECMWF-S2S model is capable of adequately and reliably predicting the latitudinal positions of the Inter-Tropical Discontinuity (ITD), mean sea level pressure component of the thermal lows and sea surface temperature (SST) anomalies over the Pacific and Atlantic Oceans. On inter-annual time-scales, results also show that ECMWF-S2S model performs best over the Savannah in forecasting of rainfall anomalies (synchronization = 75%) and over the Sahel in the prediction of rainfall accumulation. The model may however not be able to forecast extreme precipitation reliably because the disagreement between the model's ensemble members increases as higher rainfall accumulation values are attained. The implication here is that the reproducibility of the atmospheric dynamic by the model is a better measure of rainfall prediction than the actual quantitative rainfall forecasts especially in areas south of latitude 10 • N. The study therefore suggests considering some climate driving mechanisms as predictability sources for the ECMWF-S2S model to enable the atmospheric dynamics to be better represented in the model.

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Climate and the Growth of Sorghum at Kabba, Nigeria

Cited by 8 publications

References 12 publications

An Investigation of the Agroclimatic Potential of the Forest–savanna Transition Zone of Nigeria for the Cultivation of Sorghum

An Investigation of the Agroclimatic Potential of the Forest–savanna Transition Zone of Nigeria for the Cultivation of Sorghum

Food crop production in Nigeria. I. Present effects of climate variability

Evaluation of the ECMWF Sub-seasonal to Seasonal Precipitation Forecasts during the Peak of West Africa Monsoon in Nigeria

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