Recognizing Nutritional Status of Hazelnut Orchards in Qazvin Province using Multiple Nutrient Recognition Methods

Document Type : Research

Authors

1 Associate Professor, Soil and Water Research Department, Qazvin Agricultural and Natural Resources Research and. Education Center, Qazvin, Iran.

2 resercher

3 Master of soil science, Soil and Water Research Institute, Karaj, Iran.کارش

4 Assistant Professor (Ph.D.), Research Department, Qazvin Agricultural and Natural Resources Research and Education Center, AREEO, Qazvin, Iran

Abstract

It is necessary to diagnose the nutritional status of the plant in order to identify the factors limiting the growth and yield of crops and orchards at the macro level & Methods for identifying the nutrients status of plants is an effective solution to determine the consumption pattern of nutrients and increase yield and improve the quality of agricultural products. The project implementation locations were identified as 40 gardens and these 40 points of the gardens were located by GPS device. In all gardens, composite soil sampling was prepared from of 0-30 and 30-60 cm depths and its physical and chemical properties were measured. In each garden, 10 trees were selected as samples and leaf samples were obtained from four to five leaves and the complete ends of annual branches were harvested in early August. Finally, the performance of hazelnut orchards was recorded using the results of multiple identification index to analyze the status of nutrients in the leaf samples of hazelnut orchards in Alamut county of Qazvin province. According to the nutritional indicators, the gardens were divided into two communities with high and low yields and the critical limits of the elements were determined. Optimal yield of hazelnut in Alamut county was 5.65 tons per hectare and the range of optimum concentration of nutrients for nitrogen was 2.35 ± 0.22%, phosphorus 0.15 ± 0.040%, potassium 1.22 ± 0.42%, calcium 1.74± 0.33%, magnesium 0.40± 0.07%, manganese 75.39 ± 22 mg / kg, zinc 33 ± 1 mg / kg, iron 560 ±164 mg / kg, copper 11.07 ±2.98 mg / kg was determined. The results showed that most of the hazelnut orchards in this city are deficient in iron, zinc, magnesium, phosphours 42% of the orchards are in high yield and 58% in low yield.

Keywords

Research in Horticultural Sciences
Volume 1, Issue 1
September 2022
Pages 123-134

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