Estimation of Reference Melon Crop-Evapo-transpiration using Eto[Pan-Fao/Penman] and Cropwat Models
Journal Title: Analele Universitatii "Eftimie Murgu" Resita. Fascicula de Inginerie - Year 2015, Vol 22, Issue 1
Abstract
Aiming at contributing to an adequate management of water resources, accurate estimation of reference evapotranspiration (ETo) using evapo-ration pan, FAO-Penman and CROPWAT model is very important for the computation of Egusi-melon crop evapotranspiration (ETc) at different stages of crop growth and development. The study was carried out at Research and Experimental Farm of Auchi Polytechnic, Auchi with area of 6.45 m2. Measured daily evaporation depth and weather parameters for 52-day was used to compute reference evapotranspiration using evaporation pan, derived FAO-Penman and CROPWAT version 8.1 models. The maximum and minimum of EToPan, EToFAO-Penman are 4.1 mm; 5.7 mm and 3.5 mm; 4.2 mm. These values were applied to compute maximum and minimum crop-evapotranspiration (ETc) at ini-tial crop developmental stage as 3.4 mm; 0.68 mm respectively. The maximum and minimum intermediate and maturity values for EToPan, EToFAO-Penman and ETc; 4.0 mm;0.7 mm, 3.9 mm; 0.5 mm ,3.4 mm; 0.68 mm and 0.7 mm; 3.0mm; 0.6 mm; 4.1 mm, 0.46 mm;3.25 mm respectively. The melon crop and evaporation pan coefficient for the three different stages are 0.15; 0.85; 0.60 and the pan coefficient ranged from 0.71 to 1.00 and total rainfall and irrigation depths were computed to 226.9 mm and 46.7mm.
Authors and Affiliations
Olotu Yahaya, Evboifo Nathaniel, M. C. Okafor, C. I. Ayilaran
Keywords
Related Articles
- EP ID EP449011
- DOI -
- Views 116
- Downloads 0
Alternative Design Relationship of Inner Diameter for Fault Approach of Salient Poles Synchronous Machine
In this paper an alternative relationship of inner diameter for design computing on salient poles synchronous machine that take into account fault approach, has been developed. This approach is based on the finding of a...
Wear Resistance Assessment of Fluoropolymer Coated Gears
Power transmissions that incorporate gears dissipate a significant amount of energy and noise. Thus, any improvement in their performance​ contributes to reducing energy consumption and noise pollution. In recent years,...
On the Magnetic Flux Density Analytical Calculation in the Air-Gap of Electric Machines with Wide Open Slots
The magnetic flux density distribution in the air-gap of electric machines with wide open slots is discussed in the paper. The finite element methods (FEM) obtained results are compared with that calculated analytic esti...
On the Numerical Modeling of Confined Masonry Structures for In-plane Earthquake Loads
The seismic design of confined masonry structures involves the use of numerical models. As there are many parameters that influence the structural behavior, these models can be very complex and unsuitable for the current...
Diagnosis System for Elements Power Rectifiers
The diagnosis of the electric systems is an actual item for the specialists in domain. The direction is interesting due to the multitude of the measuring points and large number of possible faults to be analyzed. The alg...