Productivity and zootechnical analysis of hay grass fodder in the floodplain of the Pripyat river

Seven meadow associations of left-bank floodplain of the Pripyat River were studied, determining yields of meadow ecosystems, their agrobotanical composition at hay use and application of mineral fertilizers. Methods: floral, geobotanical, agrochemical, zootechnical. Soils were extremely diverse: high acidic, acidic and medium acidic. Soil contained low and high amounts of potassium, and low amounts of phosphorus. Caricetum gracilis, Alopecuretum pratensis, Caricetum vesicariae and Poo-Festucetum pratensis had the highest productivity while Glycerietum fluitantis - Alopecurusgeniculatus variant had the least one. Fertilizers increased productivity by 1,4 times. More than 70% of green mass were alienated in the first cut. Cereals dominated in five associations while sedges dominated in Caricetum gracilis and Caricetum vesicariae. Legumes were absent in all studied sample plots, while herbs were found. Poo palustris - Alopecuretum pratensis plant association contained the highest number of food units per 1 kg of dry matter. Poo - Festucetum pratensis, Glycerietum fluitantis - Alopecurus geniculatus variant, Poetum pratensis associations contained the lowest values.