Name: Alternate and Surge Flow Furrow Irrigation Methods for Onion Production. Evaluation in Humbo, Ethiopia (en Inglés)
SKU: 59253791
Price: 1034.47 MXN
Availability: InStock
Author: Beshaw, Kassaw
ISBN: 9783346252647

portada Alternate and Surge Flow Furrow Irrigation Methods for Onion Production. Evaluation in Humbo, Ethiopia (en Inglés)

Alternate and Surge Flow Furrow Irrigation Methods for Onion Production. Evaluation in Humbo, Ethiopia (en Inglés)

Formato

Libro Físico

Autor

Kassaw Beshaw

Editorial

Grin Verlag

Idioma

Inglés

N° páginas

Encuadernación

Tapa Blanda

Dimensiones

21x14.8x0.5 cm

Peso

0.12 kg.

ISBN13

9783346252647

Categorías

Ecología aplicada

Alternate and Surge Flow Furrow Irrigation Methods for Onion Production. Evaluation in Humbo, Ethiopia (en Inglés)

Kassaw Beshaw (Autor) · Grin Verlag · Tapa Blanda

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Reseña del libro "Alternate and Surge Flow Furrow Irrigation Methods for Onion Production. Evaluation in Humbo, Ethiopia (en Inglés)"

Master's Thesis from the year 2011 in the subject Biology - Ecology, Haramaya University (School of Graduate Studies), course: Irrigation Engineering, language: English, abstract: The aim of this experiment was to evaluate the conjunctive use of alternate and surge flow irrigation water application methods under field conditions. The specific objectives were: To evaluate flow characteristics and technical efficiency of alternate and conventional furrow irrigation under the application of surge flow, and to evaluate the combined effect of alternate and surge flow irrigations on the water use efficiency for onion production. The intermittent application of irrigation water in furrows permits more uniform distribution of infiltrated depth, considerable reduction of the volumes of water required, the possibility of using lighter irrigations, less water loss due to deep percolation and reduced leaching of fertilizers. All these benefits are associated with a clear reduction in the infiltration rate of the soil. This phenomenon occurs because, between one cycle and the next, the clods break up, particles are reoriented, and there is migration of the sediments that seal the base of the furrow. In addition, while the water supply in each cycle interrupted, air could trap in the soil pores. Both effects (reduction of infiltration and air interruption) facilitate the rapid advance of the water, solving the old problem of excessive losses of water by deep percolation at the beginning of the furrow. Therefore, many researchers are advocating the promises of surge flow irrigation in maximizing distribution uniformity, application efficiency, and minimizing the advance time, amount of irrigation water to be applied, loss of irrigation water through deep percolation and run off. Hence, the sustainability of the above-mentioned irrigation systems needs verification for local crop and management condition. Particularly, there are few works on the evaluation of combined use of the