An Assessment of the Role of Planting Density in Competition between Red Clover (Trifolium pratense L.) and Lucerne (Medicago sativa L.) in the Early Vegetative Stage

Oikos ◽  
1960 ◽  
Vol 11 (1) ◽  
pp. 26 ◽  
Author(s):  
J. N. Black
Keyword(s):  
Medicago Sativa ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Planting Density ◽  
Vegetative Stage ◽  
Trifolium Pratense L ◽  
Medicago Sativa L

COMPARISON OF YIELD COMPONENTS OF RED CLOVER AND ALFALFA

1988 ◽  
Vol 68 (1) ◽  
pp. 103-114 ◽  
Author(s):  
S. R. BOWLEY ◽  
C. T. DOUGHERTY ◽  
N. L. TAYLOR ◽  
P. L. CORNELIUS
Keyword(s):  
Medicago Sativa ◽  
Yield Components ◽  
Trifolium Pratense ◽  
Total Yield ◽  
Red Clover ◽  
Herbage Yield ◽  
Trifolium Pratense L ◽  
Medicago Sativa L ◽  
Stem Development ◽  
Selection For

Yield components of five regrowth cycles, two in 1981 and three in 1982, of three red clover (Trifolium pratense L.) populations and three alfalfa (Medicago sativa L.) cultivars were compared in swards. Red clover left more stubble but produced less herbage and accumulated total yield (herbage, stubble and 10 cm depth root) at a slower rate than alfalfa during most regrowths. The percent leaf at flowering of red clover was similar to that of alfalfa. Maximum LAI declined during successive regrowths each year. Maximum crop growth rates were 30 and 34 g m−2 d−1 for red clover and alfalfa, respectively. Stem development (canopy height) followed patterns of accumulation of herbage yield. The initiation of stems was slower in red clover and stem populations were less than that of alfalfa. Selection for faster stem initiation rates, higher stem populations, and reduced partitioning of dry matter towards stem bases which would be left as stubble were suggested as ways of increasing the herbage yield of red clover.Key words: Trifolium pratense L., Medicago sativa L., yield components, growth analysis clover (red), alfalfa

scholarly journals Comparison of the Polyphenolic Profile of Medicago sativa L. and Trifolium pratense L. Sprouts in Different Germination Stages Using the UHPLC-Q Exactive Hybrid Quadrupole Orbitrap High-Resolution Mass Spectrometry

Molecules ◽  
2020 ◽  
Vol 25 (10) ◽  
pp. 2321 ◽  
Author(s):  
Elena Roxana Chiriac ◽  
Carmen Lidia Chiţescu ◽  
Daniela Borda ◽  
Mariana Lupoae ◽  
Cerasela Elena Gird ◽  
...  
Keyword(s):  
Medicago Sativa ◽  
Trifolium Pratense ◽  
High Resolution Mass Spectrometry ◽  
Estrogenic Activity ◽  
Red Clover ◽  
Rapid Separation ◽  
Fragment Ions ◽  
Trifolium Pratense L ◽  
Medicago Sativa L ◽  
Identification And Quantification

Identification and quantification of polyphenols in plant material are of great interest since they make a significant contribution to its total bioactivity. In the present study, an UPLC-Orbitrap-MS/MS approach using the variable data acquisition mode (vDIA) was developed and applied for rapid separation, identification, and quantification of the main polyphenolic compounds in Medicago sativa L. and Trifolium pratense L. sprouts in different germination stages. Based on accurate MS data and fragment ions identification strategy, a total of 29 compounds were identified by comparing their accurate masses, fragment ions, retention times, and literatures. Additionally, a number of 30 compounds were quantified by comparing to the reference standards. Data were statistically analysed. For both plant species, the sprouts of the third germination day are valuable sources of bioactive compounds and could be used in phytotherapy and nutrition. Although Trifolium pratense L. (Red Clover) is considered to be a reference for natural remedies in relieving menopause disorders, alfalfa also showed a high level of biological active compounds with estrogenic activity.

scholarly journals Effectiveness of the process of cleaning natural alfalfa (Medicago sativa L.) and red clover (Trifolium pratense L.) seeds

2020 ◽  
Vol 24 (1) ◽  
pp. 9-12
Author(s):  
Dragoslav Đokić ◽  
Rade Stanisavljević ◽  
Jasmina Milenković ◽  
Ranko Koprivica ◽  
Jasmina Knežević ◽  
...  
Keyword(s):  
Medicago Sativa ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Trifolium Pratense L ◽  
Medicago Sativa L

PARATYLENCHUS BREVIHASTUS N. SP. (CRICONEMATIDAE: NEMATODA)

1962 ◽  
Vol 40 (3) ◽  
pp. 391-393
Author(s):  
Liang-Yu Wu
Keyword(s):  
Medicago Sativa ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Male And Female ◽  
Trifolium Pratense L ◽  
Medicago Sativa L

Male and female specimens of Paratylenchus brevihastus n. sp. were collected in Ontario, Canada, from soil around the roots of blue violets (Viola cucullata Ait.) and grass, alfalfa (Medicago sativa L.), oats (Avena sp.), and red clover (Trifolium pratense L.) during 1958 to 1961. This species has characters close to those of Paratylenchus microdorus, but differs from it in having spear knobs with rather flat anterior surfaces and front of lip region with truncate appearance. Males present.

scholarly journals Accumulation of heavy metals in Medicago sativa L. and Trifolium pratense L. at the contaminated fluvisol

2013 ◽  
Vol 67 (1) ◽  
pp. 95-101 ◽  
Author(s):  
Snezana Jaksic ◽  
Savo Vuckovic ◽  
Sanja Vasiljevic ◽  
Nada Grahovac ◽  
Vera Popovic ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Medicago Sativa ◽  
Trifolium Pratense ◽  
Anthropogenic Impacts ◽  
Total Content ◽  
Interactive Effects ◽  
Trifolium Pratense L ◽  
Medicago Sativa L ◽  
Agricultural Areas ◽  
Toxic Concentrations

Recently, heavy metals concentrations increased in some agricultural areas due to the consequences of anthropogenic impacts. The aim of this study was to determine the level of heavy metals (As, Cr, Ni and Pb) in Medicago sativa L. and Trifolium pratense L. grown on fluvisol, in order to obtain information on safety of these nutrients. The total content of Pb, As, Cr and Ni in the samples of fluvisol was above the maximum allowable amount. The content of heavy metals in Medicago sativa L. and Trifolium pratense L. was below the critical and toxic concentrations in all samples originating from contaminated soil. It was concluded that the accumulation of heavy metals in plants did not depend only on the total content in soil, but also the affinity of the plant, and individual and interactive effects of various soil properties. No statistically significant differences in the accumulation of heavy metals between Medicago sativa L. and Trifolium pratense L were observed. It is necessary to further control of heavy metals in the investigated area, in order to prevent their entry into the food chain and provide healthy food.

Étude de l'influence des réserves azotées dans l'estimation par 15N de la fixation symbiotique d'une plante pérenne, Trifolium pratense

1985 ◽  
Vol 63 (6) ◽  
pp. 991-994
Author(s):  
Chantal Lescure ◽  
Alain Chalamet
Keyword(s):  
Trifolium Pratense ◽  
Control Plant ◽  
Red Clover ◽  
Good Control ◽  
Dinitrogen Fixation ◽  
Dilution Technique ◽  
Trifolium Pratense L ◽  
Perennial Legumes ◽  
Kinetics Of

A 15N dilution technique is proposed to determine the role of nitrogen reserves in the plant on the estimation of dinitrogen fixation, during regrowth of perennial legumes. It is based on labelling of nitrogen compartments of the plant. Since the kinetics of utilization of nitrogen reserves of ryegrass (Lolium italicum L.) and red clover (Trifolium pratense L.) appear similar, ryegrass would be a good control plant. Despite this observation, the comparison of two methods (based on two or three sources of nitrogen) to estimate dinitrogen fixation shows the difficulty in applying the technique using 15N-labelled substrate over earlier periods of regrowth. In this case, the 15N method described for determining symbiotic dinitrogen fixation could be applied in controlled conditions.

COLOR INFRARED AERIAL PHOTOGRAPHY TO IDENTIFY FORAGE LEGUMES IN HAY FIELDS

1981 ◽  
Vol 61 (2) ◽  
pp. 331-336 ◽  
Author(s):  
P. K. BASU
Keyword(s):  
Trifolium Pratense ◽  
Red Clover ◽  
Aerial Photographs ◽  
Forage Legume ◽  
Image Characteristics ◽  
Mixed Crop ◽  
Trifolium Pratense L ◽  
Medicago Sativa L ◽  
The Individual ◽  
Agricultural Areas

In September 1977 and 1978, color infrared (CIR) aerial photographs of mixed agricultural areas (approx. 132.7 km2) near Vernon and Carp, Ontario, and of forage legume test plots at Ottawa were taken at a scale of 1:6000. Extensive ground surveys were conducted within 2 wk after the photographic flights to verify CIR images of alfalfa (Medicago sativa L.), red clover (Trifolium pratense L.), trefoil (Lotus corniculatus L.), vetch (Vicia spp.) grasses and their mixtures in the original transparencies. A number of photographic image characteristics of legumes and grasses have been illustrated by which a reliable identification and subsequent quantification of legume components were made, particularly in fields that showed decline of a crop or when the individual components grew as separate patches in the same field. Photo-interpretation difficulties existed in distinguishing the components in a very uniformly mixed crop and recently cut fields.

scholarly journals The Role of Amino Acids for the In Vitro Culture of Some Species of Forage Legumes I. Trifolium pratense L

2013 ◽  
Vol 70 (1) ◽  
pp. 87-92
Author(s):  
Gabriela Maria VICAȘ ◽  
Mircea SAVATTI
Keyword(s):  
Amino Acids ◽  
In Vitro Culture ◽  
Culture Medium ◽  
Trifolium Pratense ◽  
Basal Medium ◽  
Red Clover ◽  
Forage Legumes ◽  
Trifolium Pratense L

Establishing the effect of the amino acids as additional additives to the culture medium is and will be in the future one of our concerns of interest for the in vitro culture of some plants. The present study examines the effect of the glicocol added to the LS basal medium over the embryos of the Trifolium pratense L specie cultivated in vitro. There were followed: the percentage of plant regeneration of the red clover, its multiplication capacity and the formation of the root system, and also the evolution of the callus obtained on mediums with 2,4D, BA and amino acid.

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