Lotus tetraphyllus

To establish high-quality forage, sowing is often done without a cover crop or under a cover of annual cereals. The seeding rate is calculated based on the purity and germination capacity of the seeds, usually ranging from 10–12 kg per hectare using a standard row-seeding method.

Scarification of seeds is a crucial pre-sowing step, as they possess high hard-coatedness, which otherwise delays sprouting. Quality soil preparation, including rolling, significantly improves the establishment of young seedlings during the first weeks of development.

The crop is characterized by slow initial growth, making it essential to keep the fields free from weeds during the seedling stage. In subsequent years, Lotus tetraphyllus actively tillers and forms a dense turf that suppresses the growth of invasive vegetation.

When used in grass mixtures, it blends perfectly with meadow fescue or timothy, allowing for the creation of highly productive mowing and grazing pastures with long-term agricultural utility.

The plant is quite undemanding regarding growing conditions, yet it requires specific soil characteristics for maximum productivity. It adapts well to various soil types, including sandy and loamy substrates.

Lotus tetraphyllus exhibits high resistance to excessive moisture and short-term flooding, distinguishing it from many other leguminous grasses. Additionally, it tolerates moderate soil acidity, although it performs best in neutral or slightly acidic soils.

The culture possesses high winter hardiness and can endure harsh climatic conditions while maintaining productivity over many years. As a sun-loving plant, it requires open, unshaded sites to produce high-quality vegetative biomass.

It is fairly tolerant of dry periods due to its robust root system that reaches deep into the soil layers. The optimal temperature range for active vegetative growth is 18–22 degrees Celsius.

Applying mineral fertilizers, particularly phosphorus and potassium, positively influences the development of the legume component and increases protein content in the forage mass. With proper management, the crop can maintain high productivity for 6–8 years.

The yield of green mass of Lotus tetraphyllus directly depends on the intensity of management and soil fertility. In favorable years with moderate fertilization, stable cuts can be achieved, comparable to the productivity of other perennial legumes.

Average hay yield figures are around 40–60 centners per hectare depending on moisture conditions during the vegetation season. High regrowth potential after mowing allows for two or three full cuts per season.

Using the crop for grazing provides highly nutritious green feed that is well-consumed by all types of livestock. Due to the absence of alkaloids that cause bloat, this plant is considered a safe component for pasture systems.

Seed productivity of the plant is often unstable due to the prolonged ripening period of the pods, which are prone to shattering. Therefore, split harvesting or chemical desiccation is used for seed collection.

Maximum nutrient yield is achieved when harvesting at the peak flowering phase, when the concentration of nutrients in the leaves and stems is at the optimal level for hay or haylage production.

Among diseases, various types of leaf spots are most common, occurring during periods of high humidity and dense canopy. Prevention includes following optimal seeding rates and proper mowing regimes.

Powdery mildew may also appear on the crops, especially under unfavorable temperature fluctuations. Infestation leads to premature yellowing of leaves and a reduction in the overall nutritional value of the harvested biomass.

Pests such as clover root curculio can damage the root system and aerial parts of young sprouts, significantly reducing stand density in the first year. Monitoring pest populations allows for timely intervention and protective measures.

Threats to seed production also come from various seed-eating weevils that damage the reproductive organs of the plant. If the economic injury threshold is exceeded, approved insecticides are applied before the onset of massive flowering.

An important element of protection is phytosanitary control aimed at preventing the spread of fungal spores between plots and ensuring sufficient ventilation within the crop canopy.

Harvesting for hay is recommended at the beginning of the flowering phase to ensure high protein concentration and excellent digestibility. Over-maturity leads to stem lignification and the loss of leaf mass, which is the most valuable part of the forage.

When producing hay, it is important to ensure uniform drying of the windrows to prevent mold and nutrient loss. Turning the windrows allows for uniform moisture content before baling.

Harvesting technology may include stem conditioning during mowing, which significantly accelerates the evaporation process. This method is particularly effective in regions with unstable weather conditions.

For seed production, harvesting is performed when most pods turn brown, indicating full seed maturity. Using combines with appropriate threshing settings minimizes losses during the threshing process.

After harvesting, maintaining the correct temperature regime for hay storage in warehouses is critical to prevent self-heating and the growth of microorganisms that degrade forage quality.