Importance of stubble catch crops used for fooder seed under irrigation conditions in the Vychodoslovenska nizina Lowland, Slovakia
1994
Hrezo, F. (Vyskumny Ustav Zavlahoveho Hospodarstva, Somotor (Slovak Republic). Vyskumna Stanica)
The obtained yield results of stubble catch crops grown during the experimental period of 1986-1989 were evalueted. Growing these crops in double-yield system in the Vychodoslovenska nizina Lowland, Slovakia, is of great economic and ecological importance. Utilization of the cleared area after harvesting of densely sown cereal crops enables the production of high-quality forage fodder as well as the enrichment of soil with organic matter. Yields under irrigation conditions achieve as much as 10.7 t.ha** (-1) of dry matter. From among the grown catch crops green maize (CE- 250) has proved to be the most successful with average dry matter yields of 7.32 t.ha** (-1). Fodder rape (Akela) gave yields of 6.3 t.ha** (-1) of dry matter and sweet sorghum 4.22 t.ha** (-1), respectively. The average yield of sown buck-wheat samaras was 1.8 t.ha** (-1). Its successfull growing is conditional upon harvesting the main crop at the latest by the end of the 1st decade of July. The most suitable irrigation regime for stubble catch crops lies about the level of 60 % of available water capacity. The height of irrigation rate should not exceed 30 mm. For catch crops grown for green fodder rates of 80-90 kg N.ha** (-1), are sufficient and for sown buck-wheat grown as market crop, respectively.
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