METHOD FOR PREDICTING YIELD OF CORN HYBRIDS Russian patent published in 2017 - IPC A01G7/00 A01G1/00 

FIELD: agriculture.

SUBSTANCE: method involves selecting the plants of each hybrid, determining the space of leaves, the biometric indices by determining the number and weight of individual plant organs in terms of growth and development phases, determining the dry biomass of the plants, taking into account the vegetative mass gain of the entire plant and seeds during the development period, the density of plant standing, the photosynthetic potential and the calculation of the net productivity indices of photosynthesis. The amount of the dry plant biomass is preliminarily determined at the beginning and at the end of each phase of development. Thereinafter, the net productivity parameters of photosynthesis are determined by the expression NPP=(B₂ - B₁):PP, where B₂ and B₁ are the dry biomass of plants at the beginning and at the end of the accounting period; B₂ - B₁ is the dry weight gain for the number of days of the accounting period, g; PP - the photosynthetic potential of hybrids within the accounting period, g/m²×day. According to the obtained values of the net productivity of photosynthesis and the density of plant standing, the yield of corn hybrids is predicted. If the net productivity of photosynthesis of the hybrid is more than 7.5 g/m²×day at the density of plant standing more than 40 thousand plants per hectare, it is considered highly productive.

EFFECT: method allows to reliably predict the yield of corn hybrids at different phases of plant development.

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