Effect of selected parameters of stand and soil on crude protein content and dry matter digestibility in lucerne forage
2000
Jamriska, P. (Vyskumny Ustav Rastlinnej Vyroby, Piestany (Slovak Republic))
In field experiments, the effect of four lucerne varieties (Palava, Nitranka, Rod-D and Regia) from sowing without cover and from undersowing in three hybrids of maize for silage (CE-185, TO-MV-335 and TO-MV-460) on crude protein and dry matter digestibility at first cuttings in second and third year of stand vegetation were studied. Experiments, their weather and soil conditions had the greatest effect on both indicators. In second year of vegetation the varieties affected crude protein content, the variety Nitranka had higher content than variety Palava. In third year of vegetation only experimental conditions affected crude protein content. In two of three experiments differences were among the varieties. With analysed parameters of the stand and soil it was possible to explain the variability of crude protein content only in third year of vegetation. The stand height, pH of soil reduced and the stem number and nitrogen content in soil increased crude protein content. The analysed parameters determined variability values of the forage digestibility only in the second year of vegetation. The dry matter yield, stand height and density, nitrogen and humus content in soil decreased and pH increased dry matter digestibility
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