EFFECT OF RAINFALL AND TEMPERATURE VARIABILITY ON CEREAL CROPS YIELD IN KOKONA LOCAL GOVERNMENT AREA OF NASARAWA STATE, NIGERIA

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dc.contributor.authorLawrence, Ayih
dc.date.accessioned2023-12-14T05:46:38Z
dc.date.available2023-12-14T05:46:38Z
dc.date.issued2021-04-03
dc.description.abstractAgriculture is a critical part of the economy of most developing countries and is dependent on climate. The study was carried out to examine the effects of rainfall and temperature variability on selected cereal crop yields in Kokona Local Government Area of Nasarawa State, Nigeria. The study made use of rainfall and temperature data to examine how the variables affects the yield and output of maize, sorghum and millet. Questionnaire was used to elicit information on the perception of farmers on the effects of climate variability on crop yield. Rainfall and temperature data four decades (1978- 2018) was obtained from the Nigerian Meteorological Agency (NIMET), Abuja. The annual yields for sorghum, maize and millet from 2007 to 2017 was obtained from National Agricultural Extension and Research Liaison Services and Nasarawa State University, Faculty of Agriculture, Lafia campus. Trend analysis was used analyze rainfall and temperature data while simple descriptive statistics was used to analyze the questionnaire data. The results show that the highest rainfall (1349 mm) was recorded in 1985 followed by 2005(1266mm), 1998(1239mm) and 2014(1220mm) while the lowest rainfall (686mm) was recorded in 1990. The lowest maximum temperature (30.8°C) was recorded in 1996 while the highest minimum temperature (20.1°C) was recorded in 2017. The highest mean temperature (27.3°C) occurred in year 2013.Annual rainfall recorded the highest value of 1349 mm and lowest value of 686 mm. All the climatic elements recorded some level of variability. The mean yield of maize, millet and sorghum are; 2.311, 0.260 and 0.216, respectively. About 28.9% of the variation in the annual yield of maize can be accounted for by the annual rainfall and mean temperature (R2= 0.289) while about 45.2% of the variation in the annual yield of millet can be accounted for by the annual rainfall and mean temperature (R2= 0.452). For maize, about 24.2% of the variation in the annual yield of millet can be accounted for by the annual rainfall and mean temperature (R2 =0.242). Most(79.4%) of the respondents have notice changes in onset of rainfall and the type of change is rainfall starts late and ends early(89.5%). Also, majority (81.6%) indicated that there is a change in rainfall pattern (81.6%) and climate change affects agricultural yield reflecting in decrease in agricultural yield (50.4%). The study concluded that maize, sorghum and millet yield is influenced by rainfall and temperature. Climate forecasting devices should be provided in various meteorological stations and the information should made available to farmer for proper and effective adaptation purposes.en_US
dc.identifier.citationA DISSERTATION SUMM1TTED TO THE SCHOOL OF POSTGRADUATE STUDIES, NASARAWA STATE UNIVERSITY, KEFFI IN PARTIAL FULFILMENT OF THE REQUIREMENT FOR THE AWARD OF MASTER OF SCIENCE IN ENVIRONMENTAL RESOURCE MANAGEMENTen_US
dc.identifier.urihttps://keffi.nsuk.edu.ng/handle/20.500.14448/4833
dc.language.isoenen_US
dc.publisherDEPARTMENT OF GEOGRAPHY FACULTY OF ENVIRONMENTAL SCIENCES, NASARAWA STATE UNIVERSITY, KEFFIen_US
dc.titleEFFECT OF RAINFALL AND TEMPERATURE VARIABILITY ON CEREAL CROPS YIELD IN KOKONA LOCAL GOVERNMENT AREA OF NASARAWA STATE, NIGERIAen_US
dc.typeThesisen_US

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