scholarly journals Kinetics of nitrate and ammonium absorption and accompanying H+ fluxes in roots of Lolium perenne L. and N2-fixing Trifolium repens L.

1997 ◽  
Vol 20 (9) ◽  
pp. 1184-1192 ◽  
Author(s):  
H. HOGH-JENSEN ◽  
B. WOLLENWEBER ◽  
J. K. SCHJOERRING
Keyword(s):  
Lolium Perenne ◽  
Trifolium Repens ◽  
Lolium Perenne L ◽  
Trifolium Repens L ◽  
Kinetics Of

scholarly journals Comportamiento productivo de pasto ballico perenne solo y asociado con pasto ovillo y trébol blanco

2018 ◽  
Vol 9 (2) ◽  
pp. 343-353
Author(s):  
Sergio Iban Mendoza Pedroza ◽  
Alfonso Hernández Garay ◽  
Adelaido Rafael Rojas García ◽  
Humberto Vaquera Huerta ◽  
Omar Ramírez Reynoso ◽  
...  
Keyword(s):  
Lolium Perenne ◽  
Trifolium Repens ◽  
Dactylis Glomerata ◽  
Lolium Perenne L ◽  
Trifolium Repens L ◽  
Dactylis Glomerata L

Se evaluó el pasto ballico perenne (Lolium perenne L.) en monocultivo y cuatro asociaciones con pasto ovillo (Dactylis glomerata L.) y trébol blanco (Trifolium repens L.) en diferentes proporciones para maximizar el rendimiento de materia seca. Las proporciones en monocultivo y las asociaciones de ballico perenne, ovillo y trébol blanco fueron: 100:00:00, 70:20:10, 50:00:50, 40:40:20 y 20:70:10, las cuales se distribuyeron bajo un diseño de bloques completamente al azar con tres repeticiones. Se evaluó el rendimiento de materia seca, composición botánica y morfológica, relación hoja:tallo y densidad de plantas. La asociación 50:00:50 superó 15% (3 671 kg MS ha-1) a la asociación 70:20:10. El ballico perenne contribuyó más al rendimiento de materia seca en otoño e invierno, mientras que el ovillo y trébol blanco en primavera y verano. Independientemente de la asociación la densidad de plantas fue de 29, 25, 20 y 11 plantas m-2 para otoño, invierno, primavera y verano, respectivamente, con un promedio de pérdida de plantas de 62%. La contribución de cada especie en la composición botánica de las asociaciones fue variable durante el periodo de estudio. Ballico perenne aporto el 46, 40, 29 y 14% en otoño, invierno, primavera y verano, observándose una disminución conforme transcurrió el tiempo de evaluación (p< 0.05). La asociación que obtuvo las mejores características del rendimiento fue 50:00:50% de ballico perenne, pasto ovillo y trébol blanco.

Effects of chitin amendment of soil on microorganisms, nematodes, and growth of white clover (Trifolium repens L.) and perennial ryegrass (Lolium perenne L.)

1996 ◽  
Vol 22 (3) ◽  
pp. 221-226 ◽  
Author(s):  
S. U. Sarathchandra ◽  
R. N. Watson ◽  
N. R. Cox ◽  
M. E. di Menna ◽  
J. A. Brown ◽  
...  
Keyword(s):  
Lolium Perenne ◽  
Perennial Ryegrass ◽  
White Clover ◽  
Trifolium Repens ◽  
Lolium Perenne L ◽  
Trifolium Repens L

PASTURE COMPOSITION UNDER MIXED SHEEP AND GOAT GRAZING ON HILL COUNTRY

1984 ◽  
pp. 160-166
Author(s):  
D.A. Clark ◽  
M.P. Rolston ◽  
M.G. Lambert ◽  
P.J. Budding
Keyword(s):  
Lolium Perenne ◽  
Perennial Ryegrass ◽  
White Clover ◽  
Trifolium Repens ◽  
Accumulation Rate ◽  
Botanical Composition ◽  
Lolium Perenne L ◽  
Hill Country ◽  
Agrostis Tenuis ◽  
Trifolium Repens L

Hill country pasture was grazed by the following ratios of goats and sheep from 1979-l 983: 100% goats (Goat 100). 66% goats and 34% sheep (Goat 66)) 33% goats and 67% sheep (doat 33), 100% set-stocked sheep (Sheep 100) and 100% mobstocked sheep. Changes in botanical composition, herbage mass and herbage accumulation rate were measured by sample dissection, visual estimation and trimmed exclosure cages respectively on three slope classes (banks, slopes and tracks). Pastures grazed by goats developed Yorkshire fog IHolcus lanatus)- white clover (Trifolium repens L.) associations with strong white clover growth on all slope classes unlike sheep-grazed pastures which contained little white clover and were dominated by perennial' ryegrass (Lolium perenne L.) and browntop (Agrostis tenuis Sibth.). The herbage mass of 3000, 1830, 1410 kg DM/ha on banks, slopes and tracks respectively for Sheep 100 pastures contrasted with that on the Goat 100 pastures of 2030, 3750 and 4300 kg DM/ha. White clover was enhanced on all slope classes in the Goat 100 treatment. Annual herbage accumulation was greater on the Goat 100 than Sheep 100 pastures, 13.9 and 11.2 t DM/ha respectively. There was a close association between increased annual white clover accumulation and tofal herbage accumulation. The complementary nature of sheepandgoatgrazing behavioursuggeststhe possibility of increased meat and fibre production from mixed grazing. The implications of these results for future research are discussed. Keywords: Sheep, goats, herbage mass, herbage accumulation rate, botanical composition, slope classes, white clover (Trifolium repens L.), perennial ryegrass (Lolium perenne L.), Yorkshire fog (Holcus lanatusl, browntop (Agrostis tenuis Sibth.).

PROTOZOA AND BACTERIA IN THE RHIZOSPHERE OF SINAPIS ALBA L., TRIFOLIUM REPENS L., AND LOLIUM PERENNE L.

1967 ◽  
Vol 13 (8) ◽  
pp. 1057-1068 ◽  
Author(s):  
J. F. Darbyshire ◽  
M. P. Greaves
Keyword(s):  
Lolium Perenne ◽  
Trifolium Repens ◽  
Early Stage ◽  
Sinapis Alba ◽  
Lolium Perenne L ◽  
Soil Desiccation ◽  
Perennial Plant ◽  
Sinapis Alba L ◽  
Unplanted Soil ◽  
Trifolium Repens L

The largest differences between rhizosphere and unplanted soil populations of protozoa and bacteria were found during the early stages of flowering of both an annual (Sinapis alba L.) and a perennial plant (Trifolium repens L.). From an early stage in plant growth, the populations of flagellates and amoebae were significantly higher in the rhizosphere soil than in unplanted soil. The generic composition of the rhizosphere protozoan population was not different from that of unplanted soil, although the abundance of particular genera varied with the plant species and age. Ciliates were only found in low numbers in both rhizosphere and unplanted soils.Desiccation of soil planted with Lolium perenne L. initially caused a reduction in both protozoan and bacterial rhizosphere numbers. Subsequently both populations recovered with the flagellates and amoebae again more abundant in the rhizosphere than in unplanted soil. Desiccation did not greatly affect the protozoa in unplanted soil and encysted populations of amoebae and flagellates occurred when the soil was moist or dry.

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