Influence of lime and calcium:magnesium ratio on alfalfa and birdsfoot trefoil yields
| Autor: | W. Shaw Reid |
|---|---|
| Rok vydání: | 1996 |
| Předmět: | |
| Zdroj: | Communications in Soil Science and Plant Analysis. 27:1885-1900 |
| ISSN: | 1532-2416 0010-3624 |
| Popis: | A study was established in 1974 to examine the effects of lime and calcium:magnesium (Ca:Mg) ratio in the limes on alfalfa (Medicago sativa) and birdsfoot trefoil (Lotus corniculatus L.) hay yields and botanical composition of the hay. Lime was applied at rates of 0, 6.7, 13.4, 20.2, and 33.6 Mg/ha to an acid (pH 4.7) Mardin silt loam soil (coarse‐loamy, mixed, mesic typic Fragiochrepts). Using four commercially available lime sources and two mixtures of these lime sources, six Ca:Mg ratios were established for each lime rate. Calcium and/or magnesium sulfate were applied to plots that received no lime to obtain Ca:Mg ratios similar to those on the limed plots. The initial Morgan's solution extractable Ca was 450 mg/kg and Mg was 25 mg/kg. A 5 × 5 Latin Square design with five lime rates and five replications was used with the six Ca:Mg ratios as lime subplots. To improve mixing, portions of each lime treatment were applied before and after plowing in 1974 and after plowing in April of 1975. Alfa... |
| Databáze: | OpenAIRE |
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