Differential Response of Three Carrot Genotypes to Different Levels of Organic and Inorganic Fertilizer Application in Southern Derived Savanna Zone of Nigeria

Abstract

This study was conducted at landmark University during the period of 2015 and 2016 to assess the differential response of three Carrot genotypes to different levels of Organic and Inorganic fertilizer application in Southern Savanna Zone. The experiment was conducted using a Randomized Complete Block Design with three replications. Data collected on leave number, fresh leave weight, plant height and fresh root weight were subjected to analysis of Variance. Different between means were partitioned using Duncan Multiple Range test at 5% probability level (p = 0.05). The study revealed that at application of 36.8kg/ha of NPK 15:15:15 and 1t/ha of organic manure the three carrot genotypes responded differently and significantly for fresh root yield. However, there was no significant differential response to organic manure application for leaf number, but there was significant differential response under the application of 71.60kg/ha of NPK 15:15:15. All the three Carrot genotypes responded differently and significantly at application of 1t/ha of organic manure for plant height. At all levels of both Organic and Inorganic manure applications, all the three Carrot genotypes responded differentially for root yield either significant or non-significant at different levels of application. Highest Carrot root yields (40.87t/ha, 41.48t/ha and 41.58t/ha) were recorded by Varieties, ALBAKA NOMA and ROHAMA NOMA under the organic manure regime. Future study should focus on the identification of required level of manure for optimal production of individual Carrot genotypes rather than general recommendation for all the Carrots genotypes.