Investigation on switching from surface irrigation to drip irrigation method in old grown apple trees in Semirorn rigton
2000
salemi,Hamid Reza | Ghasemi , Ayyoub Ali | Maman Push, A`li Reza | Soleymani Pur, Ahmad | Keshavarz, A`bbas
Iran is one of the Experienced countries in growing orchards. Traditionally, these orchards are irrigated by surface methods. Due to water scarcity in most parts of Iran, for obtaining higher water use efficiency, application of modern irrigation systemes would be unavoidable. In this study, five irrigation methods including: surface irrigation, buhler, double drip system spagetti and microjet were tested in aged apple garden located in Semirom region in Esfahan. The systems were compared based on production index fruit quality, canopy co er and volume of applied water. The study was conducted in a randomized block design with 3 replicates for 3 years. The results indicated siginificant differences among the treatments, in which the double drip system had the maximum yield, while the surface method showed the minimum one. The maximum and minimum trunk diameter were observed in treatments irrigated with spaghetti and surface methods, respectively. Trees irrigated with double drip system and bubler method had tbe rna. imum and minimum height, respectivly. For the main shoot diameter, shading area, and shoots vegetative growth, no significant differences were detected among the treatments. Regarding other vegetative Parameters such as crop yield, qualitative characteristics of fruit, color uniformity, marketing, storage period, sugar content, acidity percentage, and volume of water consumed, double drip and microjet treatments showed the best results.
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