期刊名称：International Journal of Advances in Engineering and Management
电子版ISSN：2395-5252
出版年度：2022
卷号：4
期号：2
页码：161-168
DOI：10.35629/5252-04020715
语种：English
出版社：IJAEM JOURNAL
摘要：The study analyses the production of maize in Nigeria from 1980 to 2020 .The study area (Jigawa, Katsina, Kaduna, Kano, Kebbi Sokoto and Zamfara states) were particularly chosen for this study because of their prime places in maize production in Nigeria. The descriptive statistics used to analyze the results showed that majority (56.33%) of maize produced in the country comes from North West region with the mean annual production of 142823.9 metric tonnes while the lowest production (0.5%) of maize comes from Jigawa state with mean annual production being 4897.00 metric tonnes. The ANOVA analysis revealed that there is significant difference(significance= 0.0001) between the mean production of maize in the country and further analysis using the multiple comparison (pair wise tests) also showed that the mean annual production of maize differ in terms of the seven states of maize production in thecountry. Multiple comparison to detect where the difference lies using the three the comparison tests in the study (Turkey, LSD, Scheffe and Bonfferoni) showed that the mean difference between Kaduna and Katsina states was not significant but the mean difference between Kaduna and Kano, Kebbi, Sokoto, Zamfara and Jigawa were significant with mean difference of 53679.23, 39441.73, 83654.48, 62654.78 and - 54272.38respectively. Further analysis using mixed effect model also revealed that from 1980 production, all the seven states with the exception of Jigawa state experienced increasing maize production trend as time increased. Kaduna and Katsina regions had the highest production over the years. Random intercept with variance-covariance assumption also showed that the different states had variations in the mean maizeproduction.
关键词：Analysis of Variance;Multiple Comparisons;Random Effects;Models;Experimental Design
