NARROW-LEAVED LUPINE IN ONE-SPECIES SOWING AND AGROPHYTOCENOSIS
The results of three-year investigations of the action of narrow-leaved lupine. Mirtan upon different periods of sowing in one-species and mixed crops are presented. It is established that under the conditions of the central area of Belarus, postponing sowing periods of narrow-leaved lupine from III decade of April to May and I decade of June results in decreasing the periods of seedlings - budding and seedlings - blooming, a faster increase in the mass of plants, and, vice versa, in extending the period from blooming to the phase of dove-colored bean. When mixed with oats and tritycale, from early to more late periods of sowing the specific weight of the bean component grows and that of the cereal component decreases in the crop structure. From the blooming phase to the phase of dove-colored bean the crop yield of one-species and mixed sowings increases by a factor of 1.5-1.6.