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AGROECOLOGICAL TESTING OF SUGAR SORGHUM, SUDANESE GRASS AND SORGHUM-SUDANESE HYBRIDS IN THE NATURAL CONDITIONS OF THE NOVGOROD REGION

Elena Shkodina, Olga Balun, Sergey Kapustin, Alexander Volodin, Andrey Kapustin

Abstract: In the conditions of the Novgorod region, forage crops from the southern regions, Sudanese grass, sugar sorghum and sorghum-Sudanese hybrids exhibit high adaptive properties. The best time for harvesting these crops for green fodder and hay is the period from entering the pipe (sugar sorghum) to the appearance of inflorescences and for silage is removed in the phase of milky-wax ripeness. When sowing in the third decade of May, one-year introduced crops can be used for green fodder from mid-July to late August, for silage almost to frost. On average for 2016-2018 the highest yield of green mass for silage was obtained from the sorghum-Sudanese hybrids Navigator (58.6 t / ha), Gvardeets (43.0 t / ha), Sudanese grass Zemlyachka (39.7 t / ha), sugar sorghum Larets (40.5 t / ha). The high yield of green mass of the studied crops increases the efficiency of feed production, provides high fees per hectare of protein, exchange energy. In 2018, Sudan grass Zemlyachka and Sputnitsa, sugar sorghum Silosnoe 88 and Galya, and Sorghum-Sudanka hybrid Navigator were distinguished by the output of dry matter from 1 ha (more than 4 tons). The collection of 1 hectare of protein from Sudanese grass Zemlyachka was 639.3 kg, sugar sorghum Galia 662.9 kg, sorghum-Sudanese hybrid Navigator 601.8 kg. Introduction of introductions from the southern regions to the forage production of the Novgorod region contributes to the expansion of the range of crops grown for feed and feed conveyor, strengthening the feed base and balancing feeding rations in order to effectively manage the process of agroecosystems. Keywords: introduction, adaptation, green mass, silage, Sudanese grass, sugar sorghum, sorghum-Sudanese hybrid.

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