COMPARISON OF MICRO IRRIGATION SYSTEMS FOR OLIVE TREES
2009; Volume: 26; Issue: 1 Linguagem: Inglês
10.21608/mjae.2009.109868
ISSN2636-3062
Autores Tópico(s)Plant Physiology and Cultivation Studies
ResumoMicro-Irrigation Systems (MIS) apply water through small devices which deliver it onto the soil surface very near to the plant, which means in this context the use of bubbler, mini-sprinkler and trickle irrigation systems.From 2003From to 2006, 13 , 13 feddans of field research were established in sandy soil at Wadi EL Natrown On-Farm Irrigation Department Research Station operated by the Water Management and Irrigation System Research Institute, to evaluate the effect of MIS on olive trees.The experimental site was arranged in a split plots design.On 08-02-2003 olive trees (Olea europaea L, Calamata cv.) were planted in the center of an irrigated round base of 1 m diameter.The distance between the tree rows and the trees within the same row are 5ms.Each plot was divided into six replicates giving 18 experimental plots.All the micro irrigation systems were designed with the same control head components which consists of non-return valve, flow meter, venturi, air valve, pressure relief valve and 3 pressure gauges.Regarding the distributor units technical specifications and their placement: 1) For the trickle treatment 4 emitters (12 l/h) per each tree placed on one lateral line PE 16 mm diameter passing through the center of the tree round base; where each emitter is 30 cm distant from the next one; 2) For the bubbler treatment one bubbler per each tree (100 l/h) placed in the tree round base , 25 cm distance from the tree stem moving monthly in 180° clockwise to maintain good water distribution; 3) For the mini-sprinkler treatment one mini-sprinkler (70 l/h) per each tree with the same procedure as the bubbler.A comparison was made between the different systems taking into account the following points: olive trees morphology (plant height, stem diameter,
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