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Cultivation

Seeding rate of scorpion weed

Phacelia tanacetifolia Benth.

The seeding rate of Phacelia tanacetifolia depends on the intended use of the crop and soil fertility, ranging from 4 to 18 kg/ha. The optimal stand density for seed production is approximately 3.0 million viable seeds per hectare.

In the reference 4 varieties crop Lacy phacelia, where this is mentioned in the description.

When growing phacelia for seed, the seeding rate is 8–12 kg/ha; for green manure and catch crops, it is 10–18 kg/ha; and for establishing honey bee pastures, the range is typically limited to 4–12 kg/ha. The choice of a specific value depends on the agricultural background: on fertile soils, 4–6 kg/ha is sufficient, whereas on poor soils, the rate is increased to 14–16 kg/ha.

Phacelia is sensitive to planting depth, which should be 1–3 cm due to the small size of the seeds and their dependence on light for germination. In seed production, an excessive increase in the seeding rate is impractical, as high competition between plants negatively affects flowering intensity and maturation processes, reducing overall productivity.

General information about the subject — on the page Seeding rate.

Sources8

Varieties of Lacy phacelia mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.

Folis

Active

Phacelia tanacetifolia Benth. · Lacy phacelia

Sunagro Ukraine LLC (UKR)

HR UA
4 records

Julia

Active

Phacelia tanacetifolia Benth. · Lacy phacelia

FREUDENBERGER| Feldsaaten Freudenberger G.m.b.H. & Co. Kommanditgesellschaft

DE
4 records

Nectar

Active

Phacelia tanacetifolia Benth. · Lacy phacelia

DE
3 records

Phacelia tanacetifolia Benth. · Lacy phacelia

UA
2 records