METHOD OF POTENTIAL PRODUCTIVITY ASSESSMENT FOR LEGUMINOUS PLANT Russian patent published in 2009 - IPC A01G7/00 

FIELD: agriculture.

SUBSTANCE: invention concerns agriculture and can be applied in crop capacity assessment for new sorts and specimen in cultivation in differing soil an climate conditions both in dry and irrigated farming. Method of potential productivity assessment for a leguminous plant involves optimisation of harvesting terms, registration of mean day temperatures and precipitation amount starting from planting moment to budding phase, calculation of hydrothermal index in the period of development of two or three first true leaves till budding phase, and calculation of seed productivity forecast. At the reference sites in budding phase the number of sprouts per 1 m², number of twigs on each plant and number of buds on stem and twigs is defined in five-fold reiteration. Forecast crop capacity is calculated by the formula where y is grain crop forecast, kg per ha; N is the number of plants at reference sites in budding period, plants per m²; b is the number of twigs per stem, pcs; z_bt is the number of buds per twig, pcs; z_bs is the number of buds per stem, pcs; z_s is the average amount of seeds in one bean, pcs; m₃ is weight of 1000 seeds, g; G_pr is hydrothermal index of growing environment from planting moment till full ripe seed phase in the previous period, mm/°C; G_m is hydrothermal index of vegetation conditions in forecast year starting from development of two or three first true leaves till budding phase, mm/°C; α is an index of accessible soil moisture reserve in 0-0.3 m deep layer in vegetation period; β is an index of adverse weather conditions; η_frt is fruition index defining the number of full-grown seeds in total ovary amount; τ is an index of seeds damaged in beans by vermin; ω is an index of heat supply for plants in vegetation period, °C per day; d₁ is an index of plant supply with microelements; d₂ is an index of NPK mineral fertiliser impact on seed weight formation in beans; d₃ is an index of impact of nutrient substances in soil on the plant productivity; a is an index of daylight time for plants due to planting term deviation from standard or from reference specimen before introduction; A is proportionality factor of macro- and microelement impact on grain weight accumulation and grain properties, kg per ha.

EFFECT: high degree of forecast data verification after introduction of promising leguminous sorts for cultivation in irrigated and non-irrigated farming.

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