INFLUENCE DU STADE DE CROISSANCE À LA PREMIÈRE RÉCOLTE SUR LE RENDEMENT, LA COMPOSITION CHIMIQUE ET LES RÉSERVES NUTRITIVES DE LA FLÉOLE DES PRÉS

1979 ◽  
Vol 59 (1) ◽  
pp. 177-183 ◽  
Author(s):  
PAUL GERVAIS ◽  
J. C. ST-PIERRE
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Phleum Pratense ◽  
Vegetative Stage ◽  
Crude Fibre ◽  
Composition Chimique ◽  
Stages Of Growth ◽  
Food Reserves ◽  
Phleum Pratense L ◽  
Lower Stem

A 3-yr study on the stages of growth of timothy (Phleum pratense L.) at harvest showed that the dry matter yields increased, in the spring growth, with advance in maturity. The highest annual yield was obtained, however, when the first cut was taken at the bloom stage. The percentage of crude protein, fat and ash decreased and that of crude fibre increased with the age of the plant. The Ca, P, K, Mg, Na, Zn and Cu contents declined with maturity while the elements Mn, Al, Fe and B did not vary significantly. The food reserves in the lower stem internodes were low at the vegetative stage in the spring (11.7% of DM), but raised rapidly up to the bloom stage (33.9%).

EFFET DE L’APPLICATION D’AZOTE ET DU STADE DE CROISSANCE A LA RECOLTE SUR LA PERFORMANCE DE LA FLEOLE DES PRES (PHLEUM PRATENSE)

1977 ◽  
Vol 57 (3) ◽  
pp. 955-962 ◽  
Author(s):  
J. C. ST-PIERRE ◽  
G. PELLETIER
Keyword(s):  
Protein Content ◽  
Nitrogen Fertilization ◽  
Crude Protein ◽  
Dry Matter ◽  
Phleum Pratense ◽  
Dry Matter Yield ◽  
Stages Of Growth ◽  
Dry Matter Digestibility ◽  
Set Up ◽  
Phleum Pratense L

An experiment was set up to determine the effect of time and rate of nitrogen fertilization and stage of growth at first cut on yield and digestibility of dry matter and protein content of two timothy (Phleum pratense L.) cultivars, at each of two cuts, No difference in yield or chemical composition was found between cultivars. Highest yields and crude protein contents were measured at rates of nitrogen fertilizer of 112 and 224 kg/ha. Higher yield and protein content were obtained with NH4NO3 applied totally or in split applications in the spring than with urea in the fall. Dry matter digestibility (DDM) was not affected by nitrogen at rates of 56, 112 and 224 kg/ha. First cut was taken at two different stages of growth, and the second cut was taken on the same day in all the plots. At anthesis, yields were higher than at the head stage but DDM and protein content were lower. The opposite was found at the second cut. Except in 1973, total dry matter yield was not affected by the stage of growth at first cut.

INFLUENCE DU STADE DE CROISSANCE SUR LE RENDEMENT, LA COMPOSITION CHIMIQUE ET LES RÉSERVES NUTRITIVES DU LOTIER CORNICULÉ

1988 ◽  
Vol 68 (3) ◽  
pp. 755-762
Author(s):  
PAUL GERVAIS
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Lotus Corniculatus ◽  
Birdsfoot Trefoil ◽  
Dry Matter Yield ◽  
Full Bloom ◽  
Composition Chimique ◽  
Cell Content ◽  
Stages Of Growth ◽  
Food Reserves

A 3-year study on the stages of growth of birdsfoot trefoil (Lotus corniculatus L.) at harvest showed that the dry matter yield increased significantly, in the spring growth, with advance in maturity up to the midbloom stage. The highest annual yield was obtained, however, when birdsfoot trefoil was harvested at the full bloom stage both in the spring and summer growth. Maximum protein yield per unit of land was also obtained at the full bloom stage. In the spring forage, the percentages of crude protein, cell content, cell wall, lignocellulose, lignin, cellulose, ash and phosphorus and in the summer forage, the percentages of crude protein, lignocellulose, cellulose, ash and phosphorus decreased significantly with maturity. For all other constituents in both forages, the variations did not reach the level of significance. The accumulation of food reserves in the roots of birdsfoot trefoil in the fall was not influenced by the stages of growth at harvest.Key words: Lotus corniculatus L., growth stage, nutrient reserves, dry matter yield, forage quality, birdsfoot trefoil

INFLUENCE DE LA HAUTEUR ET DE LA FREQUENCE DES COUPES SUR LE RENDEMENT, LE PEUPLEMENT, LA COMPOSITION CHIMIQUE ET LES RESERVES NUTRITIVES DE LA LUZERNE

1987 ◽  
Vol 67 (3) ◽  
pp. 735-746 ◽  
Author(s):  
P. GERVAIS ◽  
J. M. GIRARD
Keyword(s):  
Chemical Composition ◽  
Crude Protein ◽  
Dry Matter ◽  
Food Storage ◽  
Composition Chimique ◽  
Stages Of Growth ◽  
Medicago Sativa L ◽  
The Difference ◽  
High Level ◽  
Food Reserves

A 3-yr study on height and frequency of cutting showed that alfalfa (Medicago sativa L.) cut at 5 cm from the soil produced significantly more dry matter per hectare than that harvested at 10 cm, but the differences between the two heights decreased with the years and the frequency of cutting. Forages cut at either height had similar mineral composition at any one cutting. However, the percentages of cell walls and of lignocellulose were, in general, highest in alfalfa cut at 5 cm. Height of cutting did not affect the stand nor the accumulation of food reserves in the roots in the fall. The two-cut system gave a uniform production from year to year and maintained the stand at a high level. The three-cut system, the last cut taken in October, yielded the highest yields of dry matter and of crude protein while the four-cut system produced the least and had the thinnest stand at the end of the experiment. Frequency of cutting gave rise to significant variations in the chemical composition of the forages, variations resulting from the difference in the stages of growth at harvest. In general, alfalfa cut at a younger stage exhibited a more valuable composition than that harvested at a later stage. Food storage in the roots varied with frequencies, being highest with the two-cut system and lowest with the four-cut system.Key words: Alfalfa, height and frequency of cutting, yield, chemical composition, food reserves

INFLUENCE DES CULTIVARS ET DES STADES DE CROISSANCE SUR LE RENDEMENT EN MATIERE SECHE ET LA COMPOSITION CHIMIQUE DE FOURRAGES D’AVOINE IMMATURE

1984 ◽  
Vol 64 (4) ◽  
pp. 935-943 ◽  
Author(s):  
PAUL GERVAIS
Keyword(s):  
Chemical Composition ◽  
Dry Matter ◽  
Mineral Elements ◽  
Vegetative Stage ◽  
Composition Chimique ◽  
Stages Of Growth ◽  
Nitrogen Free Extract ◽  
Significant Difference ◽  
Dough Stage ◽  
Detailed Chemical

The forage yields and the detailed chemical composition of six cultivars of oats harvested at the vegetative stage (three cuttings during the growing season to simulate grazing) and at the heading and dough stages (one cutting for silage) were established over a period of 3 yr. No significant difference in the dry matter yields of the cultivars was found within any of the three stages of growth. Highly significant increases in the yields, however, were recorded with advance in maturity from 4210 kg/ha at the vegetative stage to 6754 kg at heading and 9219 kg at dough stage. Likewise, the percent dry matter increased progressively from 12% to 19% to 33% for the same stages. In general, the organic and mineral compositions of the cultivars did not vary significantly within any stage of growth, but were influenced by the age of the tissues. The total digestible nutrient, the crude protein, the cell contents and the mineral elements Ca, P, K, Mg, Na, Zn and Fe decreased while the nitrogen-free extract, the cell walls, the lignin and the hemicellulose increased from the vegetative to the dough stage. The other constituents exhibited a less defined pattern or remained relatively stable from one stage to another.Key words: Yields, chemical composition, stages of growth, cultivars, forage oats

scholarly journals Comparison of the Yield and Chemical Composition of Eleven Timothy (Phleum pratense L.) Genotypes under Three Locations in Poland

Agronomy ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1743
Author(s):  
Adam Radkowski ◽  
Jan Bocianowski ◽  
Kamila Nowosad ◽  
Elżbieta Piwowarczyk ◽  
Ewa Bakinowska ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Plant Breeding ◽  
Crude Protein ◽  
Dry Matter ◽  
Field Trials ◽  
Phleum Pratense ◽  
Habitat Conditions ◽  
High Dry Matter ◽  
Harvest Year ◽  
Phleum Pratense L

Field trials were conducted in the years 2017–2019 at the Małopolska Plant Breeding in the Plant Breeding Stations in Polanowice, Nieznanice and Palikije. The trials were designed to determine the yield of some timothy genotypes in the context of chemical composition under different habitat conditions. The present evaluation of the strain quality shows a high potential for breeding. The analyzed genotypes produced high dry matter yields, which differed by as much as 53%. The experimental plots also differed in the crude protein content, which varied from 104.5 to 230.1 g kg−1 d.m., depending on the crop and year of harvest. For crude fiber, these values ranged from 173.9 to 274.8 g kg−1 d.m., depending on the crop and harvest year. The analysis of the mineral composition also revealed significant large variation.

THE EFFECTS OF ADVANCING MATURITY ON CRUDE PROTEIN AND DIGESTIBILITY OF MEADOW FOXTAIL (Alopecurus pratensis) AND TIMOTHY (Phleum pratense)

1983 ◽  
Vol 63 (4) ◽  
pp. 1083-1085 ◽  
Author(s):  
GWEN WALDIE ◽  
S. B. M. WRIGHT ◽  
R. D. H. COHEN
Keyword(s):  
British Columbia ◽  
Protein Content ◽  
Crude Protein ◽  
Dry Matter ◽  
Protein Digestibility ◽  
Phleum Pratense ◽  
Crude Protein Content ◽  
Phleum Pratense L

The crude protein content (CP %) and in vivo digestibilities of dry matter (DMD %) and protein (PD %) were determined on freshly cut monocultures of timothy (Phleum pratense L.) and meadow foxtail (Alopecurus pratensis L.) from 19 June to 23 Aug. at Prince George, British Columbia. CP, DMD and PD declined significantly with advancing maturity for both grasses.Key words: Meadow foxtail, timothy, protein, digestibility

EFFECTS OF NITROGEN ON HERBAGE YIELDS OF TIMOTHY HARVESTED AT VARIOUS DEVELOPMENTAL STAGES

1968 ◽  
Vol 48 (5) ◽  
pp. 501-509 ◽  
Author(s):  
S. G. Bonin ◽  
D. C. Tomlin
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Developmental Stages ◽  
Total Yield ◽  
Phleum Pratense ◽  
Pure Stand ◽  
Yield Increase ◽  
Boot Stage ◽  
Significant Yield ◽  
Phleum Pratense L

A pure stand of local commercial timothy (Phleum pratense L.) was fertilized with N at rates of 0, 56, 112 and 224 kg/ha and harvested at the vegetative, shot-blade, boot, heading, anthesis and seed-set stages for three consecutive years. Yields of dry matter (DM), digestible dry matter (DDM) and crude protein (CP) were measured.Differences in precipitation resulted in highly significant year effects. Each increase in N rate gave a significant yield increase in all years and for both first-cut and total yield of DM, DDM and CP. First-cut yield of DM increased significantly to the anthesis stage, DDM yield increased to the boot stage and CP yield increased to the shot-blade stage. Total yield of DM was maximum at the anthesis stage, DDM total yield was statistically equal at all stages, and CP total yield declined significantly after the heading stage.

INFLUENCE DE L’ACIDE 2-CHLOROETHYLPHOSPHONIQUE SUR LA CROISSANCE DE LA FLEOLE DES PRES

1973 ◽  
Vol 53 (4) ◽  
pp. 791-796
Author(s):  
J. C. ST-PIERRE ◽  
M. J. TRUDEL
Keyword(s):  
Dry Matter ◽  
Phleum Pratense ◽  
Tiller Number ◽  
Dry Matter Yield ◽  
Yield Losses ◽  
Stages Of Growth ◽  
Controlled Conditions ◽  
Phleum Pratense L

Timothy (Phleum pratense L.) was grown in pots under controlled conditions. Solutions of 2-chloroethylphosphonic acid (Ethrel) at seven concentrations were sprayed on different plants at six stages of growth. Three cuts were taken on treated plants. Ethrel treatments increased tiller number at each cut. Dry matter yield was significantly decreased by applications of Ethrel at the first cut. Total dry matter yield of the three cuts was the same for all treatments, indicating that yields of the second and third cuts made up yield losses of the first one. Ethrel applications decreased the height of plants at the first cut only. The stage of growth, at the time of Ethrel treatments, also affected results but in a less well-defined manner than did the concentrations.

Some aspects of the utilization of tropical forages. I. Green elephant grass at various stages of growth

1965 ◽  
Vol 65 (2) ◽  
pp. 233-239 ◽  
Author(s):  
M. H. Butterworth
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Volatile Fatty Acids ◽  
Pennisetum Purpureum ◽  
Elephant Grass ◽  
Crude Fibre ◽  
Stages Of Growth ◽  
Voluntary Intake ◽  
Fibre Fraction ◽  
Age Determinations

1. Cuts of elephant grass (Pennisetum purpureum were made at 40–60 (trial 1), 30 (trial 2), 50 (trial 3) and 70 (trial 4) days of age. Determinations of voluntary intake, digestibility coefficients, rate of passage through the gut, time spent eating and ruminating, number of boluses, rate of chewing, production of volatile fatty acids (both total and individual) were determined using individually housed sheep.2. Digestibility coefficients of crude protein declined with the level of crude protein in the forage; digestion of the crude fibre fraction declined with advancing maturity. The digestibility of N.F.E. increased with increasing maturity resulting in similar values for T.D.N. among the four cuts. Digestibility of dry matter of the grass in trial 2 was significantly higher than that for the other three trials.

scholarly journals Evaluation of Quantitative and Qualitative Traits of Wild Ecotypes of Forage Grasses

2013 ◽  
Vol 59 (1) ◽  
pp. 21-32
Author(s):  
Miriam Kizeková ◽  
Janka Martincová ◽  
Ľubica Jančová
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Poa Pratensis ◽  
Phleum Pratense ◽  
Yield Potential ◽  
Festuca Rubra ◽  
Dry Matter Yield ◽  
Qualitative Traits ◽  
Growing Conditions ◽  
Phleum Pratense L

Wild ecotypes of Festuca rubra L. (four accessions), Poa pratensis L. (three accessions ) and Phleum pratense L. (three accessions) originating from Central Slovakia were investigated. Dry matter production, qualitative traits as well as mineral content were studied under identical soilclimatic conditions in a three-cut system. Yield potential of wild ecotypes of Festuca rubra L. coming from mountain regions was significantly lower (P < 0.01) when compared to Festuca rubra L. cultivar Levočská. In contrast, as a consequence of low variability, the dry matter yield of Phleum pratense L. wild ecotypes originating from higher altitudes was comparable to the dry matter yields of Festuca rubra L. cultivar Levočská. There were not noted any considerable differences found in the content of crude protein, fibre or mineral substances between the wild ecotypes and the cultivars. All accessions showed consistent patterns in seasonal distribution with the highest dry matter yield at the first cut and with the lowest one at the third cut. In general, concentration of crude protein and fibre did not vary considerably among cultivars and wild ecotypes at all species under uniform growing conditions.

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