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| Author(s): | Anonymous |
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| Author Affiliation: | Vsesoyuznyi Institut Kormov, Lugovaya, Moskovskaya Oblast', USSR |
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| Title: | Intensity of the turf process and fertilizer effectiveness in long-term meadow utilization |
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| Source: | Proceedings of the 12th International Grassland Congress. Chemicalization. 1974, p. 501-506. |
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| Publishing Information: | Moscow, USSR |
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| Keywords: | TIC Keywords: Soils; Botanical composition; Fertilizers; Phleum pratense; Festuca pratensis; Persistence; Anaerobic conditions
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| Abstract/Contents: | In trials in 1947-72 in a dry valley on a poor medium-loamy soil, with normal utilization the amount of OM under the grass cover increased from 5.8 t/ha in the 1st year to 31 t/ha in the 24th year of utilization. Accumulation of OM did not lead to anaerobic conditions; the O2 content in the soil atmosphere to a depth of 50 cm was maintained at 18.5-20.9% and the CO2 content 0.3-0.5%. Soil density was 1.85-1.35 g/cm3 and porosity 48-54%. Root decomposition under the grass sward was quite rapid. On plots without fertilizers, decrease in yield began in the 1st year of utilization, along with the disappearance from the sward of timothy and meadow fescue. Applying N, P and K fertilizers increased yields from 1.9 to 6.7 t/ha and maintained the valuable grasses in the sward. In long-term utilization, yields decreased gradually from 5.4-7.3 t/ha with 90 kg N + 60 kg P2O5 + 90 K2O/ha in the first 13 years to 4.2-4.8 t/ha in the 11th-20th years and 3.6-4.4 t/ha in the 21st-26th years. This was attributed to the increase in volunteer species in the sward leading to less effective use of nutrients and the immobilization of nutrients in the sward OM. |
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| Language: | Russian |
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| References: | 4 |
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| Geographic Terms: | USSR, Moscow |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Anonymous. 1974. Intensity of the turf process and fertilizer effectiveness in long-term meadow utilization. (In Russian) Int. Grassland Congress Proc. p. 501-506. |
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