The effect of perennial forage crop on grain yields in submontane regions
2002
Sroller, J. | Pulkrabek, J. | Novak, D. | Famera, O. (Ceska Zemedelska Univ., Prague-Suchdol (Czech Republic))
The structure of crop production (areas under crops, crop yields, fertilization) in 15 agricultural farms in potato-production and mountain regions of the Czech Republic was analyzed to evaluate the relations between NPK fertilization level, percentage of perennial forage crops on arable land and grain yields as the basic indicator of crop production output. A multifactor analysis based on simple regression equations indicated direct relations between the two above-mentioned factors and yield. Correlation and regression analyses demonstrated a close correlation between grain yields and percentage of perennial forage crops on arable land especially when lower nutrient rates in fertilizers were used (below 100 kg NPK/ha arable land).
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