Sprintalga in the technology for early production of a bulb onion

Onion is one of the most common vegetable crops in the world. In the Rostov region it takes the first place among other vegetable crops in cultivated areas. The increase in production of onion is not only due to the increase in acreage, but also due to the growth of productivity. In addition, for increasing the harvest of early onion is necessary to select varieties and hybrids, to improve the technology of their cultivation. One of the most important methods for growing early onion in the culture could be the application of a dressing of biologically active substances which allow to adjust the processes of growth and development of plants of onion, to activate the process of feeding and movement of nutrients in the plant. In this regard, conducted special studies of the culture onion is the most common agrochemical containing free amino acids and other active components of the drug Sprintalga. The aim of the research was to study the action of the drug Sprintalga the processes of growth, development and productivity of plants early-maturing hybrid onion Bonus F1 in the annual culture of seeds. Research conducted in the fields of IP Digi located in the Azov district of Rostov region in 2016–2017. The soil in the experiments – a common Chernozem. The humus layer of – 70 cm, the humus content in the arable horizon of 3.77%, the content of mobile forms of nutrients – high, pH of 7.3 Weather conditions were characterized by considerable fluctuations of the main meteorological factors during the growing period of onion. Onion cultivated using drip irrigation system with fertigation. Irrigation water had a salinity of 0.65 g/l in the spring to 1.3 g/l in hot dry period in summer. During the work was the positive effect of the use Sprintalga in early growing technologies hybrid onion Bonus F1 in one culture from the seeds. Seed treatment in the dose of 0.4 ml per 1 kg of seeds increases the field germination on 6% and contributes to the better preservation of plants to harvest. Feeding vegetative plants onions during the formation of the 2–3 and 5–7 leaves promotes the growth of crop yields at 2.5–3.1 t/ha, increases the marketability and quality archery.

Key words: onion, Sprintalga, seed processing, fertilizing, harvest, quality products