Influence of Poultry Manure on Phosphate Fertilizer Need of Soybean (Glycine Max Merill (L) In Some Selected Alfisols in Benue State. (Published)
Laboratory and pot experiments were carried out at the University of Agriculture Makurdi to determine the influence of poultry manure on the Phosphate fertilizer need of soybean in some selected Alfisols in Benue State. Surface soil samples (0 – 20 cm) were collected from three locations in Benue State (Daudu, TseKough and Ayange) and Poultry manure sourced from the University of Agriculture Makurdi Livestock Teaching and Research Farm. The physical and chemical properties of the soils and poultry manure were determined using standard procedures. Four (4) Kg of soils were weighed into perforated plastic pots of 5 litres capacity,Six levels of solution P concentrations (0, 0.150, 0.175, 0.20, 0.225, 0.250 mg l-1), 2 levels of poultry manure (0 and 6 t ha-1) and three soils factorially combined constituted the experimental treatments and were arranged in a Completely Randomized Design (CRD) with three replications. Soybean seeds of the variety TGX 1935-3F were planted and grown to maturity. Optimal P solution concentrations for soybeans production on these soils were 0.2 mg l-1for Daudu, 0.225 mg l-1for TseKough while Ayange required 0.175 mg l-1. The amounts of phosphate fertilizer required to achieve this solution concentrations (SPR) were 204 Kg P ha-1 for Daudu, 223.32 kg P ha-1 and 136.55 Kg P ha-1 for TseKough and Ayange respectively. However with the addition of poultry manure the SPR for Daudu was 165.89 kg P ha-1, 185.04 kg P ha-1 for TseKough and 111.03 kg P ha-1 for Ayange representing 18.75 %, 17.14 % and 18.69 % reduction in SPR respectively.
Keywords: Alfisols, Availability, Phosphorus, Poultry manure, Standard phosphate concentration, Standard phosphate requirement
Comparative Effects of Poultry Manure and NPK Rates on Sunflower (Helianthus Annuus L.) Production in Rivers State, Southern Rainforest, Nigeria (Published)
A 2 x 4 x 3 rain fed factorial experiment arranged in a randomized complete block design, was carried out to compare the effects of poultry manure [PM] with N.P.K. (15:15:15) rates on sunflower in rivers state, southern rainforest of Nigeria. PM and NPK rates were 0, 5, 10, and 20g per seedling per pot. Data collected were plant height [at; 4, 6, 8 and 10 weeks after planting (WAP)]; number of leaves, leaf area (LA) at 6 WAP; head diameter, head weight, number of seeds per head and seed weight at harvest. Results show that NPK initially produced taller plants but PM increased growth rate with time over NPK. PM at 5, 10 and 20 g produced taller sunflower plants at 10 WAP over NPK rates. There was no significant difference in the number of leaves between plants that received PM and NPK, though NPK influenced higher LA. Head diameter, head weight and seed weight increased with doses of both fertilizers, 20 g PM produced sunflower plants with the widest diameter and weightiest seeds. While number of seeds increased with PM rates, the highest number of seeds with NPK application was at 5 g application. This was still lower than the highest number of seeds produced by sunflower plants fertilized with 20 g PM. Application of 20 g PM produced plants with highest growth rate, wider head diameter, highest number and seed weight. Twenty (20 g) PM application rate per seedling is recommended for Sunflower production in southern rainforest, Nigeria. A further study on higher PM levels is also recommended.
Keywords: Nigeria, Poultry manure, Southern Rainforest, sunflower
Influence of Poultry Manure on Phosphate Fertilizer Need of Soybean (Glycine Max Merill (L) In Some Selected Alfisols in Benue State (Published)
Laboratory and pot experiments were carried out at the University of Agriculture Makurdi to determine the influence of poultry manure on the Phosphate fertilizer need of soybean in some selected Alfisols in Benue State. Surface soil samples (0 – 20 cm) were collected from three locations in Benue State (Daudu, TseKough and Ayange) and Poultry manure sourced from the University of Agriculture Makurdi Livestock Teaching and Research Farm. The physical and chemical properties of the soils and poultry manure were determined using standard procedures. Four (4) Kg of soils were weighed into perforated plastic pots of 5 litres capacity,Six levels of solution P concentrations (0, 0.150, 0.175, 0.20, 0.225, 0.250 mg l-1), 2 levels of poultry manure (0 and 6 t ha-1) and three soils factorially combined constituted the experimental treatments and were arranged in a Completely Randomized Design (CRD) with three replications. Soybean seeds of the variety TGX 1935-3F were planted and grown to maturity. Optimal P solution concentrations for soybeans production on these soils were 0.2 mg l-1for Daudu, 0.225 mg l-1for TseKough while Ayange required 0.175 mg l-1. The amounts of phosphate fertilizer required to achieve this solution concentrations (SPR) were 204 Kg P ha-1 for Daudu, 223.32 kg P ha-1 and 136.55 Kg P ha-1 for TseKough and Ayange respectively. However with the addition of poultry manure the SPR for Daudu was 165.89 kg P ha-1, 185.04 kg P ha-1 for TseKough and 111.03 kg P ha-1 for Ayange representing 18.75 %, 17.14 % and 18.69 % reduction in SPR respectively.
Keywords: Alfisols, Availability, Phosphorus, Poultry manure, Standard phosphate concentration, Standard phosphate requirement