The phenomenon of superdeep formation tubercle at a soybean

For the first time on chernozems of the North Caucasus it is revealed superdeep nodulose location. This phenomenon is peculiar to all investigated soybean varieties. All noduloses in a soil layer of 40-60 cm and the majority of nodulses in horizon of 80-135 cm had red colouring that testifies about them nitrogen fixing activity. Development of soybean root systems on the big depths is carried out on root courses before the died off wood and grassy plants. It is supposed that through the same courses there is a soil aeration, and also with rain water nodulose bacteria deeply get.