Influence of biologies and cultivation technologies on the productivity of corn green mass in the conditions of the Yaroslavl oblast

The study was conducted in a field experiment which started in 2017 at the experimental field of the Yaroslavl Scientific Research Institute of Livestock Breeding and Forage Production - a branch of the Federal State Budget Scientific Institution “Federal Williams Research Center of Forage Production and Agroecology”. The total area of the plot is 120 m2, the placement of options is randomized in 3-fold repetition. The research object is a hybrid of corn “Ross-199 MV” which was cultivated in a seven-field rotation in 2018-2019. The predecessor was spring barley. The corn was cultivated according to the following technologies during the experiment: extensive, organic, biologized, intensive and high-intensive with the use of biologies. The aim of the research is to reveal the influence of cultivation technologies and biologies on the productivity of corn green mass. The scientific novelty lies in the fact that for the first time in the Yaroslavl Oblast various techniques of corn cultivation together with biologies will be studied, the practical significance is that the production will be suggested to use a variety of technologies of corn cultivation for green mass, the choice of which will depend on the needs of agricultural producers and their material security. As a result of the conducted researches corn formed the highest yield of green mass 80.5 t/ha and dry matter 18.3 t/ha by high-intensive cultivation technology with inoculation of seeds with biopreparation 2P9 on average for 2 years on sod-podzolic medium loamy soil with an average content of humus and potassium, a high content of phosphorus, weakly acidic soil. The work will be continued, as it is very important to choose the appropriate technology of corn cultivation to obtain the highest productivity.