Podosphaera (Sphaerotheca) euphorbiae on Euphorbia epithymoides (= E. polychroma, cushion spurge) is reported for the first time in North America. Neoerysiphe (Erysiphe) galeopsidis on Lamium amplexicaule (henbit), Blumeria (Erysiphe) graminis on Festuca idahoenis (Idaho fescue), Taphrina johansonii on Populus tremuloides (trembling aspen), and Taphrina occidentalis on Alnus rubra (red alder) a...

Bioassay techniques are often used to study the effects of allelochemicals on plant processes, and it is generally observed that the processes are stimulated at low allelochemical concentrations and inhibited as the concentrations increase. A simple empirical model is presented to analyze this type of response. The stimulation-inhibition properties of allelochemical-dose responses can be descri...

The study of genetic variation and phylogenetic relationships is essential for the efficient selection of superior plant material and conducting introgression breeding programs. In Iran, despite the wide geographical distribution of grasses no report is available on the genetic diversity and relationships of cool season grass populations. In this study amplified fragment length polymorphism (AF...

Amaç: Bu çalışma farklı tuz dozları (kontrol/0, 50 mM, 100 150 mM ve 200 mM) altında bazı çim türlerinin (Festuca arundinaceae L. (kamışsı yumak), Festuca rubra subsp. (köksaplı kırmızı yumak) commutata (adi yumak)) performaslarını belirlemek için yürütülmüştür. Yöntem Bulgular: Çalışmada dozlarını oluşturmak NaCl2 kullanılmıştır. Tuz dozlarına göre hazırlanan solüsyonlar çimlenme ortamına 8 mL...

Little information exists on establishment vigor differences among fine fescue taxa (Festuca L. spp.) and the effects N fertilizer levels or clover (Trifolium spp.)-inclusion during establishment. Five replicated field experiments in Indiana, Minnesota, Oregon were conducted from 2019 to 2021. Data collection continued for 9 mo after planting investigate four determine optimal fertility clover-...

Hieracium, or hawkweed species, serious weeds in South Island high country, may be controlled by appropriate pastoral management. Experimental trials at Lake Tekapo, related to S and P fertiliser rates of 0-100 kg ha-l yr-l, 27 different combinations of over-drilled and resident species and different seasons or intensities of grazing treatments on Hieracium dominated fescue tussock were conduct...

The discovery of a new specimen of Frenguelliidae, attributed to the new species Frenguellia Argentina, is noteworthy for the knowledge of the diversity within this little-known family.