Modern cultivation of grain crops (1920-1929)

SShA.Podgotovka soil.

Plowing.

Modern designs of disc plows.

Harrow.

Tractor with a plow.

Types of plowing.

Special machines for plowing and destruction of pests

SShA.Sev.

Different types of planting.

Demonstration of machines for sowing.

Cultivation.

Different cultivators.

Tractor "SS" at work in the field cultivator.

The first cultivation.

cultivator scheme.

The second cultivation

SShA.Shema work cultivator.

The root system of cereal.

The value of the correct application of cultivators to improve soil structure