METHOD FOR CULTIVATION OF PERENNIAL FODDER GRASSES Russian patent published in 2005 - IPC

FIELD: agriculture, in particular, production of fogger in irrigated zones.

SUBSTANCE: method involves periodically mowing biomass; irrigating and applying mineral fertilizer in spring at initial grass growing stage and for feeding after each mowing operation; after harvesting of preceding crop, providing pre-plowing irrigation at norm of 300-400 m³/hectare and ameliorating mellowing to 0.4-0.6 m depth; plowing to 0.25-0.27 m depth with turning of soil layer; mellowing top layer by means of cultivators to 0.08-0.012 m depth; leveling microrelief of irrigated field by means of levelers; providing interlace sowing of leguminous crops, such as lucerne and clover, and meadow grass crops, such as meadow fescue and orchard grass, at seeding norm of 4.8·10⁶, 5.4·10⁶, 5.5·10⁶ and 8.1·10⁶ pieces of seed per hectare, respectively, with grass mixtures being composed of two or four crops; keeping seeding depth in the range of 0.02-0.03 and 0.05-0.06 m; maintaining mineral feeding mode by applying phosphorous-potash fertilizer at norm rated for plowing for stock sufficient for 3-4 year usage of herbage; applying nitrous fertilizer in differentiated doses for mowing; applying 60 kg/hectare of nitrous fertilizer at growing period at maximal dose for first mowing of 40 kg/hectare to provide for guaranteed yield of up to 50 t/hectare of green mass; 80 kg/hectare at maximal dose for first mowing of 60 kg/hectare to provide for herbage yield of up to 70 t/hectare of green mass, and 100 kg/hectare at maximal dose of 70 kg/hectare for first mowing to provide for guaranteed yield of grass mixture of up to 90 t/hectare; keeping irrigation mode within the range of 60-80% norm of moisture. Green mass yield of from 50 to 90 t/hectare is provided with total irrigation norm of 2,550-3,250 m³/hectare to 3,600-4,050 m³/hectare. Interval between green mass harvesting and irrigation procedures at growing period is reduced to 2-3 days. Agronomical care involves harrowing of last years crop fields, after mowing of grass for green feed, and in autumn - slitting field of young crop field of second and third years of life of plants to 0.4-0.6 m depth.

EFFECT: increased effectiveness of utilization of irrigated lands, increased production of ecologically safe high-quality feeds, provision for keeping of soil fertility and improved economy of region.

10 cl, 12 dwg, 52 tbl