Identification of volatiles from differently aged red clover (Trifolium pratense) root extracts and behavioural responses of clover root borer (Hylastinus obscurus) (Marsham) (Coleoptera: Scolytidae) to them

2007 ◽  
Vol 35 (2) ◽  
pp. 61-67 ◽  
Author(s):  
Tania Tapia ◽  
Fernando Perich ◽  
Fernando Pardo ◽  
Graciela Palma ◽  
Andrés Quiroz
Keyword(s):  
Trifolium Pratense ◽  
Red Clover ◽  
Behavioural Responses ◽  
Root Extracts ◽  
Clover Root

scholarly journals Behavioral Responses of Clover Root Borer to Long-Chain Fatty Acids From Young Red Clover (Trifolium pratense) Roots

2011 ◽  
Vol 40 (2) ◽  
pp. 399-404 ◽  
Author(s):  
Loreto Manosalva ◽  
Fernando Pardo ◽  
Fernando Perich ◽  
Ana Mutis ◽  
Leonardo Parra ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Trifolium Pratense ◽  
Behavioral Responses ◽  
Red Clover ◽  
Long Chain Fatty Acids ◽  
Clover Root ◽  
Long Chain ◽  
Chain Fatty Acids

scholarly journals Feeding habituation to red clover by clover root weevil adults

2003 ◽  
Vol 56 ◽  
pp. 129-132 ◽  
Author(s):  
P.J. Gerard ◽  
J.R. Crush
Keyword(s):  
White Clover ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Feeding Preference ◽  
Choice Test ◽  
Feeding Preferences ◽  
Adult Feeding ◽  
Sitona Lepidus ◽  
Clover Root ◽  
Laboratory Trial

Red clover (Trifolium pratense) has been observed to persist longer than white clover (T repens) during field screening of legumes for tolerance of clover root weevil (Sitona lepidus) It has been suggested that this is linked to adult feeding preferences A laboratory trial was undertaken to confirm the feeding preference for white clover over red and to determine whether adults became habituated to red clover over time Groups of clover root weevil adults were caged on either white clover cv Grasslands Huia or 3 lines of Grasslands Pawera red clover At weeks 2 4 6 and 8 subsamples of adults were removed from the cages and were subjected to a 24 h choice test It was found that although adults showed a strong preference for white clover those that had been continuously fed red clover were more likely to feed on red clover in the choice test than those that had previously been fed white clover

Comparisons of Floral Response of Seed Lots of Dollard Red Clover, Trifolium pratense L. 1

Crop Science ◽  
1965 ◽  
Vol 5 (5) ◽  
pp. 425-428 ◽  
Author(s):  
R. J. Bula ◽  
R. G. May ◽  
C. S. Garrison ◽  
C. M. Rincker ◽  
J. G. Dean
Keyword(s):  
Trifolium Pratense ◽  
Red Clover ◽  
Trifolium Pratense L

scholarly journals Precrop Effect of Red Clover (Trifolium pratense L.) and Alfalfa (Medicago sativa L.) on the Population Development of the Northern Root-Knot Nematode Meloidogyne hapla Chitwood, 1949 and on Succeeding Crops—A Pot Study

Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 722
Author(s):  
Renata Dobosz ◽  
Roman Krawczyk
Keyword(s):  
Population Density ◽  
Medicago Sativa ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Continuous Cultivation ◽  
Nematode Population ◽  
Meloidogyne Hapla ◽  
Root Knot Nematode ◽  
Crop Species ◽  
Tomato Growth

The northern root-knot nematode, Meloidogyne hapla, is a major pest of many crop species. The objective of the study was to determine how M. hapla population dynamics is affected by two precrops, i.e., Trifolium pratense and Medicago sativa, in three crop durations: one, two and three years of continuous cultivation. Moreover, we set ourselves the task of evaluating the effect of the legume precrop soil on the growth of the succeeding tomato plant (Solanum lycopersicum) and on the nematode population. The experiment was performed outdoors in pots with naturally infected soil. Both precrop species investigated were found to modify the J2 nematode population density in the soil. The galls and nematode females with egg masses were observed on the roots of both studied plant species at the end of each growing season. They appeared to be more abundant on the red clover roots than on those of the alfalfa. The obtained data indicate that the spring soil sampling is more appropriate for the estimation of the M. hapla population density in the red clover precrop soil. The legume precrop soil had a limiting effect on tomato growth and fruit yield. The nematode population negatively influenced tomato growth. The experiment revealed that tomato plants could be planted in alfalfa precrop soil following at least three years of continuous alfalfa cultivation. The same cannot be said of the cultivation of red clover as a precrop for tomatoes.

scholarly journals Volatile Constituents of Trifolium Pratense and T. Repens from N.E. Italian Alpine Pastures

2009 ◽  
Vol 4 (6) ◽  
pp. 1934578X0900400 ◽  
Author(s):  
Aldo Tava ◽  
Daniele Ramella ◽  
Maris Grecchi ◽  
Paolo Aceto ◽  
Renato Paoletti ◽  
...  
Keyword(s):  
Steam Distillation ◽  
Trifolium Pratense ◽  
Red Clover ◽  
Volatile Oil ◽  
Volatile Fraction ◽  
Fresh Weight ◽  
Fresh Weight Basis ◽  
Qualitative And Quantitative ◽  
Aerial Parts ◽  
Trifolium Pratense L

The composition of the volatile fraction of two important forage legumes from Italian sub-alpine N.E. pastureland, namely Trifolium pratense L. subsp. pratense (red clover) and T. repens subsp. repens (white clover) were investigated. The volatile oil was obtained from the fresh aerial parts by steam distillation and analyzed by GC/FID and GC/MS. The oil yield was 0.018 and 0.021% (weight/fresh weight basis) for T. pratense and T. repens, respectively. Several classes of compounds were found in both the oils, including alcohols, aldehydes, ketones, terpenes, esters, hydrocarbons, phenolics and acids. Qualitative and quantitative differences were found.

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