Catch crops in field crop rotations of Kirov region
Pages: 33-37.
E-mail: niish-sv@mail.ru
Results of investigations indicates that under condition of Kirov region it is possible to cultivate catch crops like radish, mustard, and rape in postharvest and afterharvest sowings. There are 49-65 days with positive temperatures and sum of heat about 700-800°after harvest of basic crop (grain mixes for hay and winter rye for grain). Till this period 100-150 mm of precipitations take place, hydrothermal coefficient is about 1.1-1.4 that is quite enough for growth and development of catch crops and for obtaining about 6.51-8.41 t/ha of dry matter in postharvest sowings, as well as 1.20-1.80 t/ha – in afterharvest sowings. As a sum in branch "grain mix + postharvest crop – spring cereals" it is possible to take 16.68 t/ha of dry matter at use of which for green manure a soil is supplemented with organic matter. At use of production for fodder additional 3.84-4.96 thousand feed units could be obtained. At sowing of crucifers crops after winter rye for grain its green mass is leaved for erosive resistance of agro-landscape or plough at late September. Positive balance of humus of 0.16-1.37 t/ha is characteristic for use of catch crops in field crop rotations.
Keywords: crop rotation branch, catch crops, rooted-stubble rests, productivity of branch, humus balance
