Abstract
This study was carried out to investigate the effect of different organic manure sources on Root growth parameters and nutrient uptake of cowpeas (Vigna unguiculata L.). The experiment was conducted at the Teaching and Research Farm of the Faculty of Agriculture, Imo State University, Owerri. The experiment was laid out in a Randomized Complete Block Design (RCBD), with five treatments replicated four times. The treatments are 0 ton T1 (Control), T2 (10tons and pig manure), T3 (15tons of pig manure), T4 (10tons of poultry manure), and T5 (15 tons of pig manure). From the result of the experiment, the application of poultry manure significantly improved, the number of roots, root length, root dry matter, phosphorus, and potassium uptake at various growth stages of data collection. The result also showed that pig manure significantly improved the percentage of emergence, plant height, number of leaves, Nitrogen uptake, and high number of pods (9.75), seed weight (101.47g), and yield 924.16kg/ha). The cowpea responded significantly in both root growth parameters and nutrient uptake to pig manure and poultry manure at the rates used.
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