Varieties and Forms of Walnuts Grown in the Ordubad Region and their Agroecological Features

The article studies the areas where walnut varieties and forms cultivated in the Ordubad region are distributed. Phenological observations are made on the discovered varieties and forms, the development dynamics of their shoots and fruits are measured every ten days, promising varieties and forms are selected, and grafting material is collected and grafted in the “Botanical Garden” and in the entrepreneur’s yard. The length of one-year shoots of almond varieties and forms cultivated in the Ordubad region is 120–145 cm. Also, the biologically active periods of some promising varieties and forms, starting from the flowering phase, were monitored and data were collected regularly. About 100 new forms were discovered in the Ordubad region, and the majority of them were studied to determine which variety type they belong to and were conditionally named after the area where they are distributed. The article also provides the time of fruit harvest. Biometric indicators of walnut varieties and forms cultivated in the Ordubad region are studied and presented. Here, the age, height, diameter of the canopy and stem of each tree, and the average weight of each fruit are given in detail. Of the discovered walnut varieties and forms, the tallest are Kağızı javiz, Vanend, Seyfi, Suğra, Ideyal, and Ordubadı, ranging from 55–60 meters to 60–65 meters, while the Aylis-2, Aza-2, Keleki-2, Unus-5, Kotam-3, and Daste-3 forms range from 35–38 meters to 50–55 meters. The highest-yielding varieties, including Kağızı javiz, Seyfi, Suğra, Vanend, Kalın qabıg, and Ordubadı, have fruits with an average weight of 10–15 grams, while the Unus-7, Aylis-3, Vanend-3, and Aza-2 forms range from 7–8 grams to 10–12 grams.