The purpose of this paper was evaluate the volume of earth work using least squares method (Scaloppi & Willardson, 1986) and the nonlinear programming model modified from Hamad & Ali, 1990. The volume of cut produced by ...

A methodology of diagnosis, evaluation and planning to operate the irrigation units with pump water supply, was developed during this study on the base of irrigation unit “San Baltazar Temaxcalac” Pozo BEP-36 in the ...

This work has for objective to introduce a water quality methodology to determine the clogging potential in drip irrigation system, about physic and biologic aspects. The methodology suggestion involve the following analyses: ...

This study was carried out in order to estimate mineral nutrient deficiencies and their priorities in irrigated arable soils of the area of Villa Mercedes (San Luis, Argentine) and know the eficiency of water absortion ...

The irrigation uniformity is a fundamental parameter that influences the productivity of the crops and the amount of water to be apllied by irrigation. In this work we evaluated the irrigation uniformity in the banana ...

This work had the purpose to evaluated the management of the banana crop in the Gorutuba project. We analysed eight irrigated areas by microsprinkler, minisprinkler and under-tree sprinkler. We determined the phisical-hidric ...

The objective of this research was out to study the model of irrigation for cultivation in banks, alternatively for the traditional method by hose wetting. A water distributing mechanism in short and closed forrows ( 40 ...

The present work tests the influence of three diferents layers of sand with 30, 60 and 80 cm respectevely in a process of slow sand filtration utilizing non woven synthetic fabric. Assessment of water quality was done at ...

The construction, installation, and calibration of a weighing lysimeter are described. The weighing lysimeter has a surface area of 2,25 m² , and was installed at Paraipaba, CE, Brazil, into a grass weather station field ...

The objective of this work is to analyse the influence of three different angle (3, 6 e 9) of radial line, to three spray height, in the value of CUC of centre pivot system. The experiment was made with four radial lines. ...