Effect of pre-sowing treatment of sunflower seeds on plant height and photosynthetic activity of hybrids F1 Borey And F1 Dariy under the conditions of the southwestern part of the Central Black Soil Region

Nadejda Kotsareva,Elena Kovalenko,I Spichak,O Lebedeva

doi:10.1051/bioconf/20213004011

Abstract

The results of the research of the effect of seeds pre-sowing treatment with a complex of preparations, including protectant, microelements and growth regulators on economic and biological characteristics and properties of sunflower hybrids F1 Borey and F1 Dariy under conditions of the southwestern part of the Central Black Soil region are presented. The effective pre-sowing treatment scheme for seeds of sunflowers hybrids F1 Borey and F1 Dariy was determined, which allows us to obtain a seed yield up to 29.03 c / ha (increasing 6.6 c / ha) with a profitability level of 156.4% (increasing 39.6%).

Highlights

Stable price, sound liquidity made sunflower cultivation an attractive one
The development of a sunflower plant comes to generative phase only after the formation on the cone maximum number of leaves for a given type
The following tasks were set and solved: one has studied the effect of pre-sowing treatment with various solution of sunflower seeds on growth processes, on economic and biological characteristics and immunological parameters of the hybrids F1 Borey and F1 Dariy in the southwestern part of the Central Black Soil region

Summary

Introduction

In the Belgorod region the average sunflower sowing area is 7% of all seeding-downs of this crop in the Russian Federation. The average yield in the Belgorod region is 21.2 c / ha. To obtain high and sustainable sunflower yields pre-sowing seed treatment is one of the important backgrounds for profitable production. According to many researchers [1, 2, 3] the formation and deployment of one leaf takes about 3 days on average, which means that for 35 leaves formation the vegetation period is 105 days. The development of a sunflower plant comes to generative phase only after the formation on the cone maximum number of leaves for a given type. In selection process mid- and fastgrowing cultivars one takes into account the number of leaves on a sunflower plant [4, 5]. Pustovoit (AUSRIO) has proved that decreasing of five upper leaves size, the development of which stops before critical blossom begins, leads to increasing of droughtresistance and overcrowding tolerance [8, 10]

Experimental

Results and discussion

Сonclusion