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Technological aspects of growing Juglans nigra (L.) with closed root system for agroforestry in arid regions


Citation :- Technological aspects of growing Juglans nigra (L.) with closed root system for agroforestry in arid regions. Res. Crop. 24: 784-788
DARIA SAPRONOVA, ALEXANDER BELYAEV, ALIYA KHUZHAKHMETOVA AND VASILY SAPRONOV avfanc@yandex.ru
Address : Federal Research Centre of Agroecology, Complex Melioration and Forest Reclamations of the Russian Academy of Science, (Federal Research Center of Agroecology of the Russian Academy of Sciences), 97 Universitetskiy Prospekt, 400062, Volgograd, Russia
Submitted Date : 28-09-2023
Accepted Date : 9-12-2023

Abstract

Black walnut (Juglans nigra L.) as a multipurpose durable species has found application in agroforestry in temperate regions of the northern hemisphere. The deficit of J. nigra planting material is a limiting factor in increasing the area under this crop in agroforestry in arid regions. There is no or fragmentary information on the technology of cassette cultivation of black walnut in the closed ground. Juglans nigra (L.) is a large tree and favorably differs from other representatives of the genus Juglans (L.) by its longevity and ornamental character. The experiment on seed propagation was conducted at the nursery of the Nizhnevolzhskaya station, Volgograd region, Russia on selection of woody species from May 2022 to September 2023 in closed ground conditions. The optimal dates of harvesting (October) and sowing (2nd decade of May) for the southern subjects of Russia were proposed. Observance of technological aspects provides ground germination by July up to 75%, which is 6% higher. The developed regulation of agrotechnical methods (collection, storage of nuts, sowing, watering, fertilization, etc.) provides production of standard planting material (200 seedlings/m2) for one growing season.

Keywords

Agroforestry germination Juglans nigra root system seedlings stratification


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