Reserve of available moisture under sowing of sugar-beets during saturation of short-term crop rotation with different grains of fodder crops
Usyk S.V., Candidate of Agricultural Science, , Uman National University of Horticulture, Ukraine
New farms of narrow specialization, which have a relatively small land area, need a short crop rotation. Therefore, studies of short crop rotation are relevant in which forage crops are grown together with technical culture of sugar beets.
Sugar beet for vegetation uses a large amount of water. Therefore, to generate a large crop enough moisture is needed, which depends on residues of predecessor and autumn-winter precipitation.
Determination of moisture content was carried out in a field of sugar beet, which is the same for all crop rotations. Soil samples were taken at the beginning and in the end of vegetation at the depth of 160 cm. Soil moisture was determined by the thermostatic method gravimetrically with the subsequent recalculation of the available resources.
The studies found that change in the precursor for sugar beet of winter wheat to spring barley and soybeans, and in the pre-precursor — soybeans for corn and spring barley, the same as the expansion in crop rotation of corn to 60 and 40%, made almost no effect on the conditions of supply of sugar beet plants with moisture.