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Publication Date
1977
Description
The effect of different rates of nitrogen fertilization combined with PK on the quality of 6 important meadow grasses (Dactylis glomerata, Poa pratensis, Holcus lanatus, Trisetum jlavescens, Alopecurus pratensis, and Deschampsia caespitosa) was studied from 1973 to 1975. Complete NPK nutrition at rates of I 00 and 100 + 50 kg N/ha distinctly increased the digestible crude protein content in the tested grasses, especially in the first cut (in Dactylis glomerata by 44-56 %, in Poa pratensis by 54 %, and in Trisetum jlavescens by 35 %). Application of 50 kg N/ha after the first cut produced maximum increase of the digestible crude protein content in the second cut -in Alopecurus pratensis by 33 %. The same tendency was observed in Holcus lanatus and Poa pratensis, whereas opposite reactions were found in Trisetum jlavescens and Dactylis glomerata. In Alopecurus pratensis it is necessary at higher N rates to supplement PK and perform timely harvesting. Deschampsia caespitosa is a typical nitrophilous species. With one-sided, high N nutrition its digestible crude protein values are relatively high (9.52 %) and its dominance in the plant stand increases. With complete NPK nutrition its digestible crude protein values are lower and its dominance decreases.
Citation
Klesnil, A and Turek, F, "Influence of mineral fertilization on the quality of meadow grasses" (1977). IGC Proceedings (1977-2023). 37.
(URL: https://uknowledge.uky.edu/igc/1977/sess7/37)
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Influence of mineral fertilization on the quality of meadow grasses
The effect of different rates of nitrogen fertilization combined with PK on the quality of 6 important meadow grasses (Dactylis glomerata, Poa pratensis, Holcus lanatus, Trisetum jlavescens, Alopecurus pratensis, and Deschampsia caespitosa) was studied from 1973 to 1975. Complete NPK nutrition at rates of I 00 and 100 + 50 kg N/ha distinctly increased the digestible crude protein content in the tested grasses, especially in the first cut (in Dactylis glomerata by 44-56 %, in Poa pratensis by 54 %, and in Trisetum jlavescens by 35 %). Application of 50 kg N/ha after the first cut produced maximum increase of the digestible crude protein content in the second cut -in Alopecurus pratensis by 33 %. The same tendency was observed in Holcus lanatus and Poa pratensis, whereas opposite reactions were found in Trisetum jlavescens and Dactylis glomerata. In Alopecurus pratensis it is necessary at higher N rates to supplement PK and perform timely harvesting. Deschampsia caespitosa is a typical nitrophilous species. With one-sided, high N nutrition its digestible crude protein values are relatively high (9.52 %) and its dominance in the plant stand increases. With complete NPK nutrition its digestible crude protein values are lower and its dominance decreases.
