Seed productivity of alfalfa depending on the technology used

The program for the resumption of production of alfalfa seeds in the Chechen Republic involves the move towards improved varietal technologies that promote resource conservation and increase seed yields. The present research was conducted to provide scientific basis for ecological, biological and technological features of alfalfa cultivation for seed production. The study revealed the dependence of yields on variety identity, rates and methods of sowing. Alfalfa in the first and second year of life is characterized by an increase in the plant height and narrowing of row spacing from 60 to 30 cm (about 6 cm). Feya variety was characterized by the emergence of generative shoots in the amount of 70-150 pcs./m². It indicates the genetic potential of the variety and its ability to give high seed yields in the first year of life. The best result in the first year of vegetation was obtained with a seeding rate of 2 kg/ha. The highest yield (2.1 c/ha) was recorded in the option with a 60 cm row spacing, this result was twice as high as the results in the other options. It confirms the views of many researchers, that thin plant stand increases feeding areas, improves lighting and creates more favorable conditions for pollination of flowering alfalfa, forms more generative stems of the first and second orders with a large number of flowering trusses. The yields obtained from alfalfa in the second year of life was 1.7-3.5 c/ha. The highest yield was recorded in Bagira variety with a 60 cm row spacing (3.5 c/ha). Bazhena variety took the second place, its yield was 0.3 c/ha lower than that specified above. The productivity of crops with a 45 cm row spacing was lower, but at the same time, these crops showed rather stable yields of 2.4-2.7 c/ha.

срок посева, способ посева, норма посева, урожайность семян, семенная продуктивность, адаптивная технология, sowing period, sowing method, sowing rate, seed yield, seed productivity, adaptive technology

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