Assessment of Almond (Pronus sp) Orchards Nutritional Balance utilizing Deviation from Optimum Percentage (DOP) Method on Chaharmahal va Bakhtiari Province

BACKGROUND: Deviation from Optimum Percentage (DOP) Method is one of the most prominent procedures in order to evaluation of almond nutritional balance. OBJECTIVES: The aims of current research were to determine the nutritional requirement of almond orchards on saman area of Chaharmahal va Bakhtiari Province. METHODS: In order to evaluation nutritional balance of almond trees, an experiment was designed utilizing the Deviation from Optimum Percentage (DOP) technique. This was conducted in the orchards of Zayandehroud River with a length of 60 km, and an information database was accommodated. In current research, 36 gardens were selected and the leaf samples were prepared. The selected leaf samples were deterged and squelched for proving ground analysis. The high yield orchards were selected to provide reference data at the end of growth period and on this subject, 30% of high yield gardens were chosen. RESULT: The DOP indicators were evaluated and the nutritional requirements arrangement was assigned. The findings revealed that the trees nutritional requirements were in the following order: Cu>S>Zn>Mn>P>Ca>Mg>B>N>K>Fe>Mo. CONCLUSION: The final repercussions exhibited that among the considered nutrients, the highest and least nutrient shortage was dedicated to copper and molybdenum, respectively.