Publication Date
1985
Location
Kyoto Japan
Description
In mountains farming systems, the wintering is the principal constraint because hay stock by ewe is low and has poor feed value. The objective of this research is to show the effect of spring management (fertilization, grazing) on the reproductive growth. We measured herbage dry matter on three plots of different fertility levels (0.108 % - 0.045 % - 0.018 % P205 Dyer) at an altitude of 1250 m. We show that the net starting growth is afunction of the soil fertility level (we observed differences of a month between plots). Consequently, the grazing effect on the regrowth does not only depend on the spring grazing duration. The nitrogen content is correlated with the duration from net starting growth time ( or grazing end if happening later than net starting growth time) to hay cut. . After grazing, the potential growth without any !imitating plant nutrition is near 10 kg DM/ha/degree-day. By adding manure, it is possible to reach from 60 % to 80 % of the potential on high fertility level soil and from 40 to 60 % on the other ones. As only a few hay meadows have high fertility level, possible improvments are important.
Citation
Duru, M, "Herbage Dry Matter Yield and Nitrogen Content of a Reproductive Growth According to Spring Management Case of Permanent Meadows in the Pyrenees Mountains" (1985). IGC Proceedings (1985-2023). 31.
(URL: https://uknowledge.uky.edu/igc/1985/ses6/31)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Herbage Dry Matter Yield and Nitrogen Content of a Reproductive Growth According to Spring Management Case of Permanent Meadows in the Pyrenees Mountains
Kyoto Japan
In mountains farming systems, the wintering is the principal constraint because hay stock by ewe is low and has poor feed value. The objective of this research is to show the effect of spring management (fertilization, grazing) on the reproductive growth. We measured herbage dry matter on three plots of different fertility levels (0.108 % - 0.045 % - 0.018 % P205 Dyer) at an altitude of 1250 m. We show that the net starting growth is afunction of the soil fertility level (we observed differences of a month between plots). Consequently, the grazing effect on the regrowth does not only depend on the spring grazing duration. The nitrogen content is correlated with the duration from net starting growth time ( or grazing end if happening later than net starting growth time) to hay cut. . After grazing, the potential growth without any !imitating plant nutrition is near 10 kg DM/ha/degree-day. By adding manure, it is possible to reach from 60 % to 80 % of the potential on high fertility level soil and from 40 to 60 % on the other ones. As only a few hay meadows have high fertility level, possible improvments are important.
