scholarly journals Soil mycoflora as a factor limiting the occurrence of fungi pathogenic for three varieties of Dactylis glomerata L.

2014 ◽  
Vol 19 (2) ◽  
pp. 245-281
Author(s):  
Maria Kutrzeba

Fungal communities isolated from the soil, rhizoplane, rhizosphere, and roots of three varieties of <i>Dactylis glomerata</i> L. (Brudzynska, Motycka and Nakielska) cultivated in mountain conditions were examined. Two species pathogenic for <i>D. glomerata, Fusarium avenaceum</i> and <i>F. culmorum</i> were observed. Then pathogenicity in respect to the three varieties was examined and the effect of particular fungal communities on the pathogenic fungi was established.

2014 ◽  
Vol 15 (1) ◽  
pp. 61-73 ◽  
Author(s):  
Wanda Truszkowska ◽  
Barbara Kalińska

Knowledge of fungal communities within cultures of clover planted into barley and clover with cocksfoot grass may be used to evaluate the antiphytopathogenic potential of the environment. Observation of the lack of common pathogenic fungi and the sensitivity of <i>Fusarium oxysporum</i> populations to agroecological conditions indicates the possibility of influencing the healthiness of the clover by agrotechnical methods.


2014 ◽  
Vol 20 (1) ◽  
pp. 34-44
Author(s):  
Maria Kutrzeba

The investigations concerned fungal associations found in the rhizosphere, rhizoplane and on roots of three varieties of <i>Dactylis glomerata</i>: 'Brudzyńska', 'Motycka' and 'Nakielska' infected with <i>Fusarium avenaceum</i> and <i>F. culmorum</i> and subsequently planted in sterilized and unsterilizes soil. The value of particular varieties in neahing and environment giving good plant health was examined.


2014 ◽  
Vol 19 (1) ◽  
pp. 47-53
Author(s):  
Maria Dorenda

Thebiotic function of communities of saprophytic fungi in the soil, rhizosphere, planospohere and roots of clover, orchard grass and their mixed cultures in respect to selected pathogenes of clover was examined. The pathogens were <i>Fusarium oxysporum</i> f. sp. <i>trifolii</i> and <i>Sclerotinia trifoliorum</i>. These communities were not able to resist <i>Fusarium oxysporum</i> f. sp. <i>trifolii</i>. However, most of the components of these communities limited the development of <i>Sclerotinia trifoliorum</i>.


1973 ◽  
Vol 65 (4) ◽  
pp. 671-674 ◽  
Author(s):  
S. J. Donohue ◽  
C. L. Rhykerd ◽  
D. A. Holt ◽  
C. H. Noller

Crop Science ◽  
1963 ◽  
Vol 3 (1) ◽  
pp. 17-19 ◽  
Author(s):  
C. L. Canode ◽  
E. V. Horning ◽  
J. D. Maguire

1985 ◽  
Vol 65 (3) ◽  
pp. 787-791
Author(s):  
H. A. BURITY ◽  
B. E. COULMAN ◽  
M. A. FARIS

A greenhouse experiment has shown that total nitrogenase activity of alfalfa (Medicago sativa L.) is not significantly affected when grown in association with timothy (Phleum pratense L.), smooth bromegrass (Bromus inermis Leyss) or orchardgrass (Dactylis glomerata L.) except after initial harvest when decreased alfalfa activity was associated with smooth bromegrass or orchardgrass. It was concluded that mixed cultures of alfalfa with timothy, smooth bromegrass or orchardgrass have no effect on alfalfa N2 fixation. The results also suggest the occurrence of N transference from alfalfa to associated grasses. It is speculated that this transfer is not primarily due to the death of roots and nodule tissue (after harvest), but involves some degree of N excretion during the period before initial harvest.Key words: Alfalfa-grass mixtures, N2-fixation, nodule activity, N-transference


1983 ◽  
Vol 63 (1) ◽  
pp. 267-276 ◽  
Author(s):  
R. L. NICHOLS ◽  
R. A. PETERS

Birdsfoot trefoil (Lotus corniculatus L. ’Viking’) was seeded directly into a predominantly orchardgrass (Dactylis glomerata L.) sward following overall or banded applications of paraquat (1,1′-dimethyl-4, 4′-bipyridinium ion, as dichloride salt) or glyphosate [N-(phosphonomethyl)glycine, as isopropylamine salt] to determine the degree of sward control necessary for stand establishment without tillage. Effects of the herbicide treatments and the seeding on botanical composition and dry matter production were determined by a vertical intercept technique and by hand separations of harvests into botanical components. Trefoil establishment was proportional to the degree of sward control during the seeding year. Little trefoil was established by direct seeding without herbicides. The banded herbicide treatments were less effective than overall herbicide applications for trefoil establishment. Trefoil yield obtained following overall application of paraquat was approximately 65% of that obtained following overall glyphosate treatment.Key words: Dactylis glomerata, glyphosate, Lotus corniculatus, herbicide, no-tillage, paraquat


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