Publication Date
1997
Description
The establishment and growth of three leguminous plants Medicago sativa (A), Trifolium pratense (TR) and Lotus corniculatus (LC) was analysed. They were oversown on three different row spacings (10, 20 y 40 cm) on September 12, 1994. Density was estimated by marking and sequential counting of seedlings. Growth was estimated from Leaf Area Index (LAI) and from forage accumulation per area unit on three dates: D1 = 26/01/95; D2 = 11/04/95; D3 = 5/12/95. Total forage accumulation was higher (p<0.05) for the treatments oversown with TR in D1 at the smaller distances (average from 10 and 20 cm, 4130 kg DM/ha, 46% higher than treatment control (C); all the other treatments did not differ from C). In D2 there were no differences between treatments (average 1995 kg DM/ha); in D3 there were no differences among the oversown treatments (average 2498 kg DM/ha) and forage accumulation was 59% higher than C. There was no difference in seedling density between oversown legumes A and TR but both were higher (p<0.05) than that of LC. The relationship between the LAI of the oversown legume and that of the vegetation present was higher (p<0.05) for TR than for the rest of the treatments: D1, TR=1.43, A=0.21, LC=0.1; D2, TR=1.62, A=0.31, LC=0.2 and D3, TR=1.91, A=0.86, LC=1.05 . It is concluded that it is feasible to increase yield and modify botanical composition of degraded pastures by oversowing legumes.
Citation
Colabelli, M R. and Mazzanti, A, "The Effect of Different Oversown Legume Species and Row Spacings Upon the Production of Degraded Cultivated Pastures" (2024). IGC Proceedings (1993-2023). 11.
https://uknowledge.uky.edu/igc/1997/session22/11
Included in
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The Effect of Different Oversown Legume Species and Row Spacings Upon the Production of Degraded Cultivated Pastures
The establishment and growth of three leguminous plants Medicago sativa (A), Trifolium pratense (TR) and Lotus corniculatus (LC) was analysed. They were oversown on three different row spacings (10, 20 y 40 cm) on September 12, 1994. Density was estimated by marking and sequential counting of seedlings. Growth was estimated from Leaf Area Index (LAI) and from forage accumulation per area unit on three dates: D1 = 26/01/95; D2 = 11/04/95; D3 = 5/12/95. Total forage accumulation was higher (p<0.05) for the treatments oversown with TR in D1 at the smaller distances (average from 10 and 20 cm, 4130 kg DM/ha, 46% higher than treatment control (C); all the other treatments did not differ from C). In D2 there were no differences between treatments (average 1995 kg DM/ha); in D3 there were no differences among the oversown treatments (average 2498 kg DM/ha) and forage accumulation was 59% higher than C. There was no difference in seedling density between oversown legumes A and TR but both were higher (p<0.05) than that of LC. The relationship between the LAI of the oversown legume and that of the vegetation present was higher (p<0.05) for TR than for the rest of the treatments: D1, TR=1.43, A=0.21, LC=0.1; D2, TR=1.62, A=0.31, LC=0.2 and D3, TR=1.91, A=0.86, LC=1.05 . It is concluded that it is feasible to increase yield and modify botanical composition of degraded pastures by oversowing legumes.
