Bartolo Bladder Clover

Adaptable over wide soil types, with high hard seed

Trifolium spumosum

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Semi erect cultivar suited to mildly acid to alkaline sandy loam soils with pH 5–8. Tolerant of heavy grazing. Hard seeded, with protection against false breaks. Does not produce well in saline or waterlogged soils.

Key attributes

  • Aerial seeding, self-regenerating annual legume
  • Suited to mildly acid to alkaline sandy loams
  • Tolerant of heavy grazing
  • Hard seed protects against false breaks
  • Regenerates after cropping
  • Good hay and silage

About this variety

Bladder clover is an aerial seeding, self-regenerating annual legume and an alternative to sub clover and medic, being more widely adapted, with higher dry matter production, and a prolific seeder for pasture persistence. The quantity and quality of forage produced is generally equivalent to or better than other current pasture options.

Bartolo is a productive annual forage, tolerant of heavy grazing in medium to low rainfall areas, and suited to self-regenerating arable land or short-term phase farming systems. It is very well adapted to mildly acid and alkaline sandy-loam and loam soils, and its high level of hard seed enables regeneration after cropping. It is susceptible to severe frosts.

The feeding value of bladder clover is similar to subterranean clover, with spring digestibility usually around 82% and 22% crude protein. Formononetin and genistein levels are lower than in subterranean clover and are unlikely to cause a phyto-oestrogen effect in grazing animals.

Planting & grazing notes

Sow as close to the break of season in autumn as possible, shallow at 0.5cm; rolling after sowing is an advantage. Inoculation is recommended, using Group C inoculant. Sow with 100–150 kg/ha superphosphate, or super/potash on sandy soils. Compatible with subterranean clover, biserrula, serradella, crimson, rose and gland clover, annual medics and Italian and perennial ryegrass. It can be heavily grazed in winter, but reduce the stocking rate at flowering time. As with most legumes, it could cause bloat in cattle in very pure bladder clover swards.

Disease & pest resistance

Little or no sensitivity to clover scorch. Moderately tolerant to blue green aphid and lucerne flea, and less affected by redlegged earth mite than sub clover or medics. Pseudopeziza leafspot has been seen in high rainfall areas. Sensitive to the herbicides bromoxynil, Spinnaker and Raptor.

Stand life

A self-regenerating annual. A high level of hard seed enables regeneration after cropping, and many seeds survive ingestion by sheep. Reduce stocking at flowering to protect seed set.

How it's sold

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Bare25 kgIn stock
Bartolo Bladder Clover

FAQs

What pasture legume can I use in a crop rotation in the wheatbelt with 350mm rain?

We recommend Bartolo Bladder Clover for low to medium rainfall rotations from 350mm. It is an aerial-seeding, self-regenerating annual legume, and its high level of hard seed lets it regenerate after cropping, which suits self-regenerating arable land and short-term phase farming systems. Sow at 5 to 10 kg/ha on its own, inoculated with Group C.

Is there an alternative to sub clover and medic that handles both acid and alkaline soils?

Bartolo Bladder Clover is a good alternative. It is well adapted to mildly acid and alkaline sandy loam and loam soils and is generally more widely adapted than sub clover or medic. It produces more dry matter and seeds prolifically for persistence. It won't tolerate prolonged waterlogging or salinity.

How much Bartolo bladder clover should I sow per hectare?

We recommend sowing Bartolo Bladder Clover at 5 to 10 kg/ha as a single species, or 1 to 5 kg/ha in a mix. Sow shallow at about 0.5cm, as close to the autumn break as possible, inoculate with Group C inoculant and roll after sowing if you can. Sow with 100 to 150 kg/ha superphosphate, or super and potash on sandy soils.

How deep and when should I sow bladder clover?

We recommend sowing Bartolo Bladder Clover shallow, at about 0.5cm, as close to the autumn break as possible. Rolling after sowing helps. Sow with 100 to 150 kg/ha superphosphate, or super and potash on sandy soils, and inoculate the seed with Group C inoculant.

My clover pasture keeps getting wiped out by false breaks. What can I sow instead?

We suggest Bartolo Bladder Clover. Its high level of hard seed means only part of the seedbank germinates on an early rain, so the stand survives a false break. It flowers around 105 days in Perth, and many seeds even survive passing through sheep.

Is Bartolo clover safe for horses and breeding ewes?

We recommend Bartolo Bladder Clover for sheep and beef cattle, and horses can graze it as part of a grass-based pasture. Its formononetin and genistein levels are lower than in sub clover, so it is unlikely to cause phyto-oestrogen problems in ewes. In very pure swards it can cause bloat in cattle, so we suggest mixing it with other species.

How hard can I graze a bladder clover pasture?

Bartolo Bladder Clover tolerates heavy grazing, especially in winter. Reduce the stocking rate at flowering to protect seed set, which drives regeneration. Its spring feed is highly digestible, with around 22% crude protein, similar in feeding value to sub clover, and quality declines as it senesces.

What pests and herbicides do I need to watch with a bladder clover pasture?

Bartolo Bladder Clover is less affected by red-legged earth mite than sub clover or medics and is moderately tolerant of blue green aphid and lucerne flea. It has little sensitivity to clover scorch. However, it is sensitive to bromoxynil, Spinnaker and Raptor, so check your herbicide plan with us.

What can I sow with a bladder clover to make a mixed pasture?

Bartolo Bladder Clover mixes well with sub clover, biserrula, serradella, crimson, rose and gland clovers and annual medics, plus Italian and perennial ryegrass. Our Casbah Biserrula, Hykon Rose Clover or a serradella such as Margurita French Serradella are good companions. In mixes, sow Bartolo at 1 to 5 kg/ha.

Bartolo vs Diamanti bladder clover, what's the difference?

The main differences are flowering time, hard seed and rainfall. Bartolo Bladder Clover flowers around 105 days in Perth and suits 350mm+ rainfall. Diamanti Bladder Clover flowers 10 to 14 days earlier (about 95 days), has harder seed for more false-break resilience, has a more upright habit that is easier to harvest, and suits 300mm+ and the drier eastern wheatbelt.