University of Khartoum

Technical Evaluation Of Center Pivot Irrigation System For Lucerne (Medicago Sativa) Production In The River Nile State

Technical Evaluation Of Center Pivot Irrigation System For Lucerne (Medicago Sativa) Production In The River Nile State

Show full item record

Title: Technical Evaluation Of Center Pivot Irrigation System For Lucerne (Medicago Sativa) Production In The River Nile State
Author: Ali, Mohammed Abu El Gasim Osman
Abstract: Field experiments were carried out at Ras El Wadi Scheme in The River Nile State during the period from February to June 2004, to evaluate the performance of center pivot irrigation system for Lucerne production under The River Nile State soil and climatic conditions. The fieldwork included determination of field capacity, infiltration rate, soil bulk density, crop water requirements, application efficiency, pattern efficiency, coefficient of uniformity, nozzles discharge and wetted diameter related to their locations along the lateral and percentage of lost area. In addition a comparative study was conducted between the different towers using some selected plant growth attributes, viz: crop height, number of flowers per plant, number of plants, green and dry weights of fodder (per unit area) and productivity in ton/ha. The soil type was found to be a sandy clay loam. The average moisture content at field capacity was found to be 33.25%. The soil bulk density was found to be 1.5g/cm3. The initial infiltration rate was high and the basic infiltration rate ranges between 20 cm/hr to 32cm/hr. Investigations showed that under 50% speed the application efficiency was 87.2%. The uniformity coefficient was found to be 83%. The uniformity of distribution was found to be 74%. Nozzles discharge was found to increase outwards from the pivot point. Nozzles wetted diameter was also found to increase outwards to the last towers following designed sequence of the nozzle size. The area lost by wheel tracks and road was found to be 1.4% of the total irrigated area. Results showed a non-significant difference in plant height, among the different towers whereas a highly significant difference was noticed in number of flowers, number of plants, weight of wet fodder, weight of dry fodder (per unit area) and yield in ton/ha.
Description: June 2004
URI: http://khartoumspace.uofk.edu/handle/123456789/10916
Date: 2015-05-17


Files in this item

Files Size Format View Description

This item appears in the following Collection(s)

Show full item record

Share

Search DSpace


Browse

My Account