Losa is a black seeded Sub-Clover that belongs to the Trifolium subterraneum ssp. subterraneum family and was derived from several elite lines of Sardinian germplasm and therefore is well suited to Mediterranean and temperate climates. Losa demonstrates a prostrate to semi erect growth habit and persists well on various soil types. It has been selected for its superior early vigour and improved autumn and spring production compared to other early season varieties such as Dalkeith. Losa requires a minimum growing season of 4 months. Its early vigour allows for quick ground coverage which is extremely important in low rainfall situations. Losa is a suitable replacement to Daliak, Geraldton and Dalkeith. The early maturity and hard seed levels of Losa makes it suited to medium term cropping rotations. Losa will provide the benefits of soil nitrogen along with an effective disease break.
Approximately 95 to 100 days (Perth).
Losa, as with all Sub-Clovers, is susceptible to Red Legged Earth Mite, (Halotydeus destructor), Blue-Green Aphid (Acyrthosiphon kondoi), Blue Oat Mite (Penthaleus major) and Spotted Alfalfa Aphid (Therioaphis trifolii). Therefore, control is essential at the early seedling stage and appropriate pest management must be implemented as required.
- Losa exhibits superior early vigour (much higher than that of other early season varieties) this allows for quick ground coverage which is extremely important in low rainfall situations.
- In trials conducted over a number of seasons, Losa has demonstrated dry matter yields far superior to that of varieties such as Daliak. This superiority is related to the outstanding ability of Losa to self regenerate resulting in its dry matter yields increasing from year to year.
Losa has demonstrated moderate resistance to Clover Scorch (Kabatiella caulivora). It is moderately susceptible to Root Rots caused by Pythium (Pythium spp.) and Fusarium (Fusarium spp.).
Regeneration - Losa has the ability to produce more seed and provide high levels of hard seed (30%) compared to varieties such as Dalkeith and Geralton. This characteristic allows Losa to build up a greater reserve of seed in the soil over time, thus enhancing persistence and productivity for many years, particularly in cropping rotations.
Grazing - Losa has demonstrated excellent autumn, winter and spring growth levels. It is a very “leafy” variety which forms dense swards ideal for grazing and has demonstrated superior plant regeneration compared to Daliak and Seaton Park. Summer grazing should be monitored carefully in low rainfall areas