Yield of yellow-flowered alfalfa (Medicago falcata L.) with the use of the growth regulator Albit, the microbiological fertilizer Sporion and molybdenum microfertilizer

Russian State Agrarian University – Moscow Timiryazev Agricultural Academy, 127434, Moscow, Russia

^* Corresponding author: lazarevnick2012@gmail.com

Abstract

Field studies were conducted at the Field Experimental Station of the Russian State Agricultural Academy named after K.A. Timiryazev (Moscow) in 2022-2024, the effect of the growth regulator Albit, microbiological fertilizer Sporion and molybdenum micronutrient on the formation of herbaceous stands of alfalfa of the sickle variety Nizhegorodskaya, alfalfa of the variable varieties Agnia and Taisia was studied. It was found that on medium-cultivated sod-podzolic soil with a pHKCl of 5,4, sickle-shaped alfalfa and variable alfalfa formed dense and weed-free agrophytocenoses. The density of sickle alfalfa in the 3rd year of life was 804-1051 shoots per 1m², and variable alfalfa was significantly less - 712-947. There was no thinning of grass stands. The participation of variable alfalfa in the harvest for the third year by mowing was 80,5-99,9%, and sickle alfalfa 81,1-97,9%. Sickle alfalfa of the Nizhegorodskaya variety was characterized by high yields, providing an average of 6,4-6,78 t/ha of dry matter over three years. It increased the yield when using Albit, Sporion and molybdenum by 0,25; 0,37 and 0,38 t/ha, respectively.