Formation of narrow-leaved lupine productivity depending on seed inoculation and fertilization

Abstract

Narrow-leaved lupine is characterised by valuable economic features, so it is an important source of balanced and easily digestible vegetable protein. The purpose of the study was to substantiate the effect of seed inoculation and fertiliser on the growth and development of narrow-leaved lupine plants in order to maximise the genetic potential of the variety in Polissya conditions. The following research methods were used: general scientific (induction and deduction, generalisation), special (field, measurement and weight, physiological, laboratory), and statistical (correlation and regression). Field studies were conducted during 2019- 2021. The features of growth and development of narrow-leaved lupine plants of the Olimp variety in Polissya conditions were investigated. The positive effect of seed inoculation with bacterial preparations and foliar fertilization with complex fertiliser on the productivity of narrow-leaved lupine, which plays an important role in solving the problem of plant protein, was established. The optimal area of the leaf surface of plants was determined by optimising the elements of agricultural technology of narrow-leaved lupine. The photosynthetic potential of lupine was determined depending on seed inoculation with biological preparations and fertiliser. The studied factors increase stem density, plant survival, and improve the indicators of individual crop productivity. Inoculation of seeds with biologics and foliar application ensures the formation of the highest (2.43 t/ha) grain productivity of narrow-leaved lupine. Seed inoculation increases the yield of narrow-leaved lupine grain by 10.8-11.4%, depending on nutritional background. Foliar application of plants with complex fertiliser in phases BBCH 21-23 and BBCH 51 on a mineral background for seed inoculation provides a 2.8% increase in grain yield compared to the control. The findings can be used to improve the elements of the technology of growing narrow-leaved lupine, which will ensure high and stable grain yields

Keywords

• grain yield
• bacterial preparations
• foliar application
• bbch scale
• linear indicators
• leaf surface area
• photosynthetic potential