The effect of the distribution of nitrogen fertilizer on productivity of white clover/ryegrass sward
Soil grassland animal relationships Proceedings of 13th general meeting of the European Grassland Federation, Banska Bystrica, Czechoslovakia, June 25-29, 1990: 262-266
The effects of different seasonal distribution of 175 kg N/ha were examined in 3 years on sandy soil and sandy loam in irrigated swards of white clover and perennial ryegrass The distributions did not influence the annual production or the mean clover content (30-35%) in swards cut 4 or 6 times per annum. On the other hand there was a marked effect on the seasonal rate of DM production, especially on sandy soil. A relatively high N application in the summer gave a high rate of DM production and also gave the most uniform clover content for the whole growing season. A relatively high application in the spring gave a low clover content in the spring, but increased content during the growing season.