Paclobutrazol seed treatments: potential for retarding growth of field bean, radish and perennial ryegrass

Growth Characteristics of Perennial Ryegrass

Mature perennial ryegrass plants in pastures persist through the asexual reproduction of the tiller. Leaves are initiated from the flanks of the tiller stem apex. Generally, two leaves arc growing on a tiller at any one time. New tiller buds may arise from the axils of mature leaves depending on environmental conditions. Flowering results from a physiological change at the stem apex, which then...

Simulating perennial ryegrass cutting

Perennial ryegrass is one of the most commonly cultivated forage species in Europe, where grazing and mowing (cutting) are used to manage this resource. Cutting can be characterized by its intensity (height) and its frequency. Combinations of these two factors affect mono-species grasslands productivity and could also modify the genotypic composition of heterogeneous populations. Indeed, the hi...

Seed yield and oil quality of perennial castor bean in a Mediterranean environment

ewline"> Castor (Ricinus communis L.) is an oilseed species, which in southern Italy iscultivated as annual during the spring-summer period under irrigation, but in mosttemperate areas such as those of eastern coast of Sicily, it could be grown as semiperennial with no irrigation, by the adoption of autumnal sowings. A fieldexperiment was conducted in southeastern Sicily with the aim of assessi...

The effects of maleic hydrazide on growth control of perennial ryegrass (lolium perenne L.CV. yarandi)

Control of blind seed disease (Gloeotinia temulenta) in perennial ryegrass (Lolium perenne) seed crops and implications for endophyte transmission

In three field trials fungicides used for stem rust (Puccinia graminis) control were evaluated to assess the effect on levels of blind seed disease, seed germination and endophyte (Neotyphodium lolii) transmission. Blind seed disease infection was reduced from 24% to 5% in one of the three trials undertaken and germination was increased by between 17 and 23% in two trials. There was a negative ...