scholarly journals Seasonal changes of proteins, structural carbohydrates, fats and minerals in herbage dry matter of red clover (Trifolium pratense L.)

2011 ◽  
Vol 27 (4) ◽  
pp. 1543-1550 ◽  
Author(s):  
S. Vasiljevic ◽  
B. Cupina ◽  
Dj. Krstic ◽  
I. Pataki ◽  
S. Katanski ◽  
...  
Keyword(s):  
Dry Matter ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Cellulose Fiber ◽  
Production Cycle ◽  
Fiber Fractions ◽  
Trifolium Pratense L ◽  
Second Year ◽  
Phosphorus And Potassium ◽  
Novi Sad

Red clover (Trifolium pratense L.) is the second most important perennial forage legume, after alfalfa. It is a significant source of proteins, which are essential in the diet of domestic animals, especially ruminants. The objective of this study was to determine the most important characteristics of dry matter quality (crude proteins, structural carbohydrates, fats and minerals) in three varieties of red clover (K-17, Kolubara and Una). The characteristics were monitored, per individual cuts, during one production cycle of red clover, i.e., in the period 2004- 2006. Highest contents of crude protein in all three test years were obtained in the second cut. Significantly increased contents of crude proteins (18.32%) and potassium (K-2.53%) were found in the red clover cultivar Una developed in Novi Sad. Significantly increased values of both cellulose fiber fractions (NDF, ADF) were registered in the second year of growing. The highest content of minerals was determined at the beginning of the growing season in the first and second year (8.68% and 8.52%, respectively). Here it should be mentioned that the contents of basic biogenous elements, phosphorus and potassium, were within the expected optimum range.

scholarly journals Forage yield and persistence of red clover progenies in two environments

2003 ◽  
Vol 60 (3) ◽  
pp. 447-452 ◽  
Author(s):  
Daniel Portella Montardo ◽  
Miguel Dall'Agnol ◽  
Nilton Rodrigues Paim
Keyword(s):  
Dry Matter ◽  
Recurrent Selection ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Forage Yield ◽  
Winter Period ◽  
Forage Production ◽  
Growing Seasons ◽  
Trifolium Pratense L ◽  
Physiographic Regions

Red clover (Trifolium pratense L.) is one of the most important temperate legume species, used to lessen the lack of forage during the critical fall-winter period in Rio Grande do Sul, RS, Brazil. However, its utilization has been restricted mainly because of its lack of persistence. This work evaluates the dry matter yield and persistence of red clover half-sib progenies in two physiographic regions of RS: "Depressão Central", in Eldorado do Sul and "Encosta Superior do Nordeste", in Veranópolis. Experiments were carried out for two growing seasons and results were compared to two red clover commercial checks, Qüiñequeli and Estanzuela 116. The region of Veranópolis was more adequate for red clover forage production, enabling better yield and persistence. The best check for both locations was cultivar Estanzuela 116. At Eldorado do Sul persistence was highly affected and some progenies were superior to the best check. At Veranópolis the best check was very productive, with good persistence. The best progenies at both locations were selected to be propagated and submitted to additional recurrent selection cycles.

CULTIVAR-ENVIRONMENT INTERACTIONS IN RED CLOVER

1984 ◽  
Vol 64 (1) ◽  
pp. 139-144 ◽  
Author(s):  
T. M. CHOO ◽  
N. N. COULSON ◽  
J. E. LANGILLE ◽  
A. F. RAYMENT ◽  
J. S. BUBAR ◽  
...  
Keyword(s):  
Dry Matter ◽  
Trifolium Pratense ◽  
Red Clover ◽  
The Other ◽  
Environment Interaction ◽  
Dry Matter Yield ◽  
Population Average ◽  
Trifolium Pratense L ◽  
Yield Difference ◽  
Interaction Variance

The performance of nine double-cut and three single-cut red clover (Trifolium pratense L.) cultivars was studied at five locations in Atlantic Canada. The single-cut clovers survived relatively well at all locations while the double-cut clovers did not survive well at one location during the first winter. An analysis of data for total dry-matter yield from five environments, i.e., location-year combinations, showed that the single-cut clovers outyielded the double-cut clovers in Newfoundland but yielded lower at the other locations. Among the double-cut cultivars, Florex, Lakeland, Tapiopoly, and Violetta were found to be desirable cultivars because they had a high mean yield and did not yield lower than the population average at any of the five environments. A large cultivar-environment interaction variance was detected for the double-cut cultivars; therefore, at least 15 test environments are required in future trials in order to detect a yield difference of 6% by multiple comparison procedures.Key words: Trifolium pratense L., stability

scholarly journals Effect of row spacing and seeding rate on seed and dry matter yield of red clover (Trifolium pratense L)

2011 ◽  
Vol 48 (1) ◽  
pp. 155-160
Author(s):  
Rade Barac ◽  
Gojko Duronic ◽  
Djura Karagic ◽  
Sanja Vasiljevic ◽  
Branko Milosevic
Keyword(s):  
Dry Matter ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Row Spacing ◽  
Dry Matter Yield ◽  
Seeding Rate ◽  
Trifolium Pratense L

scholarly journals Estimation of red clover (Trifolium pratense L.) forage quality parameters depending on the stage of growth

2011 ◽  
Vol 27 (4) ◽  
pp. 1563-1569
Author(s):  
J. Markovic ◽  
R. Strbanovic ◽  
D. Terzic ◽  
R. Stanisavljevic ◽  
D. Djokic ◽  
...  
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Neutral Detergent Fiber ◽  
Net Energy ◽  
The Third ◽  
Stages Of Growth ◽  
Feed Value ◽  
Trifolium Pratense L

The objective of this study was to investigate the changes that take place in nutrient values of red clover (Trifolium pratense L.) cv K-27 at different stages of growth in the second and the third cut. The samples from different stages of growth: mid-bud stage, around 60% flowering and full flowering were investigated for crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), digestible dry matter (DDM), dry matter intake (DMI), relative feed value (RFV), total digestible nutrients (TDN), net energy-lactation (NEl), net energy-maintenance (NEm) and net energy-gain (NEg) content. Higher content of crude protein was found in the third cut (262.1 g kg-1 of DM) than in the second cut (260.8 g kg-1 of DM) in the first stage of development. TDN, DDM, DMI, RFV, NEl, NEm and NEg were calculated according to the appropriate equations adapted from common formulas for forages. The stage of plant development has a significant influence on the chemical composition and the relative feed value of red clover. The achieved results show that adequate maturity stage for cutting might be at mid-bloom stage, when crude protein content, NEl, NEm and NEg content are high.

scholarly journals Assessment of surface and injection fertilization on various grass hybrids in grass-clover mixture

2010 ◽  
Vol 56 (No. 12) ◽  
pp. 557-563
Author(s):  
O. Kozlovský ◽  
J. Balík ◽  
J. Černý ◽  
M. Kulhánek ◽  
J. Hakl ◽  
...  
Keyword(s):  
Dry Matter ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Fertilizer Application ◽  
Nitrogen Fertilizers ◽  
N Content ◽  
Nitrogen Injection ◽  
Trifolium Pratense L ◽  
Small Plot ◽  
Set Up

In a small-plot trial, grass hybrids Perseus (loloid) and Felina (festucoid) were compared in a mixture with red clover (Trifolium pratense L.) and their reactions to surface application of nitrogen fertilizers or injection into soil according to CULTAN method were investigated. Both fertilizer application methods were used with three levels of nitrogen. Mixtures containing the Felina hybrid had higher yields (12.1 t/ha) compared to the Perseus hybrid (11.0 t/ha), and they also showed higher clover abundance. Increasing dosage of nitrogen resulted in slightly higher yield, whereas the trend in clover abundance was opposite. Nitrogen injection resulted in slightly higher dry matter yields and slightly higher clover abundance as compared to surface fertilization. The N content in the grass-clover mixture was balanced for both types of fertilizer application and did not change significantly with increasing dosage of fertilizer. A slightly higher N content was observed at the Felina hybrid treatments; the dependence of this element on clover abundance in the mixture was set up to 50%.

scholarly journals Boron application in red clover (Trifolium pratense L.) seed production

2015 ◽  
Vol 54 (1) ◽  
pp. 59-63 ◽  
Author(s):  
Dalibor Tomić ◽  
Vladeta Stevović ◽  
Dragan Đurović ◽  
Milomirka Madić ◽  
Nikola Bokan ◽  
...  
Keyword(s):  
Seed Production ◽  
Seed Yield ◽  
Trifolium Pratense ◽  
Acid Soil ◽  
Red Clover ◽  
Relative Increase ◽  
Second Growth ◽  
Trifolium Pratense L ◽  
Second Year ◽  
Positive Effect

AbstractA field trial with four red clover cultivars was established on acid soil in order to evaluate the effect of foliar boron application on seed yield. The crop received foliar boron treatment during the second growth of the second year at two applications. Although seed yield showed a significant increase in boron-treated plants in 2011 compared with control (26.0%), its relative increase was far higher in 2010 (43.2%), which had increased total rainfall amounts during flowering. Sufficient level of boron supply to red clover plants for seed production has a remarkably positive effect under conditions hampering pollination and fertilisation.

Protein degradation and ensiling characteristics of red clover and alfalfa wilted under varying levels of shade

1999 ◽  
Vol 79 (2) ◽  
pp. 209-222 ◽  
Author(s):  
V. N. Owens ◽  
K. A. Albrecht ◽  
R. E. Muck
Keyword(s):  
Protein Degradation ◽  
Dry Matter ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Nonprotein Nitrogen ◽  
Protein Nitrogen ◽  
Harvest Dates ◽  
Trifolium Pratense L ◽  
Medicago Sativa L ◽  
Time Required

The conversion of protein nitrogen (PN) to nonprotein nitrogen (NPN) in forages occurs rapidly and extensively during wilting and ensiling. The objectives of this study were to determine whether the amount of time between cutting and ensiling affects protein degradation in red clover (Trifolium pratense L.) and alfalfa (Medicago sativa L.) silage and to document pre- and post-ensiling characteristics of these two species. Forage from the second (24 August 1993), first (27 May 1994), and second (10 July 1995) growth cycles was harvested with hand clippers to a 5-cm stubble height between 09:00 and 10:00 h on each of the three harvest dates. Herbage was allowed to wilt to a targeted dry matter (DM) content of 350 g kg−1 under 0, 30, 73, and 100% shade (wilting treatment) and ensiled in 100-mL polypropylene centrifuge tubes. Time required to reach the desired DM varied each year, with the greatest range in drying times occurring in 1993. Starch was lower and sugar higher in fresh and wilted red clover than in alfalfa. Fresh red clover contained less NPN than alfalfa in 1993 and 1995 (P < 0.05) and similar amounts in 1994 (P > 0.05). Wilting treatment had no effect on NPN in wilted forage in 1994 and 1995, a result of nearly equal wilting times across shade levels. In 1993, however, NPN increased and starch decreased with shade. Within species, further protein hydrolysis during ensiling resulted in similar NPN levels in silage from all wilting treatments in 1993, despite differences in NPN in pre-ensiled wilted forage. Red clover silage consistently contained less NPN than alfalfa. Wilting treatments did not consistently affect sugar and starch concentrations of silage from either species, although there was a tendency for sugar and starch to decrease with longer wilting periods. Key words: alfalfa, red clover, protein degradation, ensiling

Azur red clover

2006 ◽  
Vol 86 (3) ◽  
pp. 749-750
Author(s):  
Bruce Coulman
Keyword(s):  
Key Words ◽  
Dry Matter ◽  
Trifolium Pratense ◽  
Growth Habit ◽  
Red Clover ◽  
Dry Matter Yield ◽  
Trifolium Pratense L ◽  
Cultivar Description ◽  
Diploid Cultivar

Azur is a diploid cultivar of red clover [Trifolium pratense (L.)], which was selected for vigor and growth habit in the year of seeding. In forage trials conducted in Québec, Azur was superior in dry matter yield to check cultivars, particularly in trials harvested in the second production year. In trials in Ontario and the Atlantic provinces, Azur was numerically superior in dry matter yield to the check cultivar, but not significantly so (P < 0.05). Key words: Red clover, Trifolium pratense (L.), cultivar description

YIELD OF DRY MATTER AND NITROGEN FROM TOPS AND ROOTS OF SWEETCLOVER, ALFALFA AND RED CLOVER AT FIVE STAGES OF GROWTH

1969 ◽  
Vol 49 (1) ◽  
pp. 61-68 ◽  
Author(s):  
K. E. Bowren ◽  
D. A. Cooke ◽  
R. K. Downey
Keyword(s):  
Green Manure ◽  
Dry Matter ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Triticum Aestivum L ◽  
Melilotus Officinalis ◽  
Stages Of Growth ◽  
Companion Crop ◽  
Second Year ◽  
Percent Nitrogen

Sweetclover (Melilotus officinalis L.), alfalfa (Medicago sativa L.), and red clover (Trifolium pratense L.) were grown to determine their value for returning nitrogen to the soil at two locations in northeastern Saskatchewan from 1956 to 1960. Yields of dry matter and nitrogen in the top growth and in the roots were determined for each crop at rive stages of growth. The legumes were seeded m association with a fertilized and an unfertilized companion crop of wheat (Triticum aestivum L.).Sweetclover produced the greatest yield of top growth at all harvest dates. The root weights of alfalfa and red clover had surpassed those of sweetclover by July 15 (full-bloom stage) and September 15 (mature-seed stage), respectively. Percent nitrogen in the top growth of the legumes ranged from 1.87 to 2.61% on September 15 of the first year and from 2.58 to 2.89% by June 15 of the second year. After June 15, a sharp decline in percent nitrogen of the top growth occurred, especially in sweetclover. Percent nitrogen of the root growth of sweetclover also declined rapidly after June 15, while that of alfalfa and red clover increased.If sweetclover, alfalfa or red clover were used for green manure in late June or early July of the second year, a return of 70 to 90, 60 to 95 and 50 to 75 kg N/ha, respectively, would have occurred. If a crop of hay or silage was removed and only the stubble used for green manure, the average nitrogen returns to the soil from sweetclover, alfalfa and red clover would have been 10, 20, and 15 kg N/ha, respectively.Fertilizer increased the yield of the companion crop and reduced the yield of the legumes.

scholarly journals Yield and forage quality of red clover (Trifolium pratense L.) cultivars in the lowland and the mountain regions

2011 ◽  
Vol 50 (No. 9) ◽  
pp. 391-396 ◽  
Author(s):  
J. Leto ◽  
M. Knežević ◽  
K. Bošnjak ◽  
D. Maćešić ◽  
Z. Štafa ◽  
...  
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Mountain Region ◽  
Crude Fiber ◽  
Stem Height ◽  
Green Mass ◽  
Growing Seasons ◽  
Trifolium Pratense L

Six Trifolium pratense L. cultivars, five diploid and one tetraploid, were grown in the lowland region (123 m altitude) and the mountain region (650 m altitude). Dry matter (d.m.) and green mass (g.m.) yield, stem height and leaf proportion were assessed from each of the three growing seasons. Chemical composition was assessed from the average samples of all cuts in the second year of the experiment. Greater green mass (54.14 t/ha) and dry matter yield (9.86&nbsp;t/ha), stem height (0.61 m), crude protein (157.6 g/kg), crude fiber (222.9 g/kg), crude ash (100.68 g/kg) and crude fat (30.09 g/kg) content were observed in the mountain region, compared to the lowland region (45.61 t/ha g.m. 8.92 t/ha d.m. 0.59 stem height, 156.38 g/kg crude protein, 216.6 g/kg crude fiber, 94.85 g/kg crude ash, 24.98 g/kg crude fat). The greater leaf proportion (47.2%) and nitrogen free extract content (420.13 g/kg) were observed in the lowland region compared to the mountain region (42.95% and 402.99 g/kg, respectively). A significant location &times; cultivar interaction was found for all investigated parameters except for leaf proportion.&nbsp;

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