Rainfed agriculture has a high yield potential if rainfall and land resources are effectively used. In this study, conventional (NC) six in-situ water conservation practices were used to cultivate Soybean in 2011 2012 Ile-Ife, Nigeria. The are: Tied ridge (TR), Soil bund (BD), Mulch (ML), plus (MLBD), (TRML), (TRBD). arranged Randomised Complete Block Design with four replicates. Seasonal was 539 761 mm 2012, respectively. soil storage (SWS) ranged from 485 for NC 517 TRML the two seasons....

Modelling of the effects water and different levels nitrogen on evapotranspiration productivity rainfed soybeans is very important in optimising resource use production crop. The objective study was to model evapotranspiration, soil storage under fertilizer by using FAO AquaCrop model. Field experiments were conducted at Teaching Research Farms Obafemi Awolowo University, Nigeria rainy seasons 2015 2016. There five nitrogen, which are 00, 25, 50, 75 100% recommended applications two...

Effective management of water under irrigated agriculture is crucial to ensure food security. One crop that has high irrigation economic potential at local and international scales soybean. This article presents the outcome field experiments conducted in dry seasons 2013 2014 Nigeria on effects deficit (DI) practices reproductive stages The experimental factor was timing irrigation. five treatments were full (FI); skipping every other week during flowering; pod initiation; seed filling...

The use of crop yield models is important in simulating and predicting crops making decisions under changing climate conditions, order to optimize production. In this study the AquaCrop model was calibrated validated predict canopy cover, dry above-ground biomass, yield, evapotranspiration, soil moisture content water productivity soybeans. conducted Ile-Ife, Nigeria, for two seasons. Treatments were full irrigation different deficit applications during growth stages: flowering, pod...

Soybean is the world's major oilseed crop. Field experiments were conducted for 2 years on soybeans in order to study effects of deficit irrigation (DI) during reproductive stages radiation interception, use efficiency (RUE), seed yields, harvest index (HI) and crop water productivity (WP). The regimes full (FI), DI every other week flowering, pod initiation, filling commencement maturity. Average seasonal extinction coefficient (λ) ranged from 0.45 maturity 0.47 methods. Pooled over seasons...

In order to archive the millennium goals of which water for all by year 2015 is a major component; efforts must be made efficiently utilise available resources in various parts world and more importantly Africa has been described as worst hit. Nigeria, scarcity terms quality quantity problem. assess potential River Osun at Apoje sub-basin located southwestern part streamflow gauge height data 18 years (1982-1999) were collected from Ogun-Osun Basin Rural Development Authourity, Abeokuta,...

Abstract Field experiments were conducted for two seasons in Ile-Ife, Nigeria to evaluate the performance of AquaCrop model simulating effects soil fertility management on canopy cover ( CC ), water storages SWS cumulative aboveground biomass BM evapotranspiration ET a grain yields, and productivity WP ) rainfed maize. Six levels cultivars maize, SUWAN 1-SR PVA led 2 by 6 factorial experimental treatment arranged randomized complete block design. Agronomic environmental parameters measured...

The experiment was conducted using a lysimeter in June, 2014 Saki (Derived Savanna) and Ile-Ife (Tropical Rainforest) to determine the crop coefficients effects of Urea fertilizer on yield water productivity Amaranthus viridis Nigeria. loamy sandy soil top 15 cm sampled, air-dried analysed. Eighteen (18) kg sieved soils were weighed into thirty-two (32) lysimeters. Drill method used for sowing seeds spread within 2 lysimeter. applied at 0, 40, 80 160 N/ha twice during growing season....

<p><strong>Background</strong>: Tillage is one of the major threats to soil health which often results into physical degradation if not properly managed. Zero tillage an alternative option from both economic and environmental protection our resources points view. <strong>Objective. </strong>To evaluate responses cowpea (<em>Vigna unguiculata</em>) yield evapotranspiration different practices.<strong> Methodology</strong>. The study was...

This study simulates the leaf area index (LAI), above-ground dry matter (ADM) and seed yield of soybean grown in an alfisol soil humid tropical climate Nigeria, West Africa.It used calibration datasets for 2011 2012 to validate field experiment conducted at Teaching Research Farms, Obafemi Awolowo University, Ile-Ife, Nigeria from September 2015 December 2015.The model was evaluated using root-mean-square-error (RMSE), mean bias, (MB) percentage bias (PMB).Model sensitivity tests were also...

The study investigated the influence of prescribed fire two different intensities and mulching on runoff soil loss, coefficient, phosphate nitrate contents water. treatments consisted 200 500 o C, grass mulch, control. Each treatment was imposed a plot 9 m 2 arranged in randomized complete block design replicated three times, for cropping seasons. Runoff volume, were measured data analysed using general linear method effects at p < 0.05 . Grass-mulched had lowest while control highest. Soil...