Yield and nutritive value of alfalfa cultivars sown at different densities
2008
Stanisavljevic, R., Institute for Forage Crops, Krusevac (Serbia) | Tomic, Z., Institute for Animal Husbandry, Belgrade - Zemun (Serbia) | Lugic, Z., Institute for Forage Crops, Krusevac (Serbia) | Milenkovic, J., Institute for Forage Crops, Krusevac (Serbia) | Djokic, D., Institute for Forage Crops, Krusevac (Serbia)
The effect of cultivar and plant density on dry matter yield and nutritive value of alfalfa was studied. The trial was conducted at the first cutting of alfalfa plants in their second and third years of growth, and four cultivars and two different crop densities were tested. The cultivars were found to have significant effect on dry matter yield, proportion of leaf in total yield and content of crude proteins under both densities. The highest forage yield achieved in the first density (20 cm row spacing with 15 kg/ha seed rate). The wide row spacing (50 cm) with low seed rate (9 kg/ha) was showed lower forage productioon. The effect of cultivars and plant density on other parameters of forage nutritive value was insignificant. A high positive correlation with the proportion of leaf was found for the content of crude proteins, concentration of potassium, phosphorus, calcium and content of crude fat. Crude fiber was highly negatively correlated with leaf proportion, while the latter showed no correlation with crude ash and nitrogen-free extract.
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