Paspalum planum
Paspalum planum
Description
Sowing dates
The optimal sowing time for Paspalum planum coincides with a period of stable soil warming, when average daily temperatures reach +15...+18°C. In regions with a mild climate, early spring sowing is possible, as the seeds have good germination energy given sufficient soil moisture.
Field preparation must be started in advance, ensuring a fine-crumbly soil structure for better contact between seeds and the substrate. The sowing depth should not exceed 1-2 cm, as the plant has small seed material requiring shallow placement.
The seeding rate varies depending on the method of use: for pasture establishment, it is about 8-12 kg/ha. When sowing as part of grass mixtures, the rate is adjusted downwards to ensure a balance between species.
A critical condition for successful sowing is rolling the soil after seed distribution. This promotes the retention of capillary moisture in the top layer and ensures uniform emergence within 10-14 days.
In the first weeks of life, Paspalum seedlings develop slowly, so it is extremely important to ensure the cleanliness of the crops from weeds. Mechanical removal of weeds or the use of selective herbicides at early stages is the key to successful stand formation.
Growing requirements
Paspalum planum belongs to the Poaceae family and is a typical perennial grass adapted to warm and temperate climates. The plant is characterized by high plasticity regarding light conditions.
The crop prefers well-drained but moisture-retentive loamy and sandy loam soils. It demonstrates high tolerance to short-term excessive moisture, making it suitable for areas with high groundwater levels.
For optimal growth, Paspalum requires a high level of solar insolation. Although the plant can tolerate slight shading, maximum biomass productivity is achieved with open access to light throughout the day.
The plant responds well to nitrogen fertilizers, which stimulate tillering and rapid regrowth after mowing or grazing. Phosphorus and potassium additives contribute to strengthening the root system and increasing winter hardiness.
Climatically, Paspalum planum performs best in regions with long growing seasons and an absence of extreme frosts. Temperatures below critical values can lead to the freezing of the above-ground part, but the powerful root system ensures rapid recovery in spring.
Yield
The green mass yield of Paspalum planum with intensive care can reach 25-35 tons per hectare per season. Indicators depend heavily on the irrigation regime and the frequency of mineral fertilization, as well as the fertility of the soil profile.
When used in pasture rotation, the crop shows excellent regenerative ability after grazing. This allows for up to 4-5 grazing cycles per growing season without significant depletion of nutrients in the rhizome.
The quality of the harvested biomass is characterized by high protein content at early stages of development, making it a valuable component of ruminant diets. As stems age, they become coarser, so timely harvesting or grazing are key factors.
Under irrigated farming, yields can increase by 30-40% compared to rain-fed crops. Using drip or sprinkler irrigation systems allows for maintaining a consistently high output of production during dry months.
It is important to consider that the maximum biological potential for yield is reached in the 2nd or 3rd year after sowing, when the sward becomes fully formed and resistant to external impacts.
Main diseases and pests
Among the main diseases of the crop are fungal infections such as rust and leaf spot, which develop under high humidity and dense stands. Timely mowing helps to reduce the risk of epiphytotic development.
Pests such as cereal flies and leafhoppers can damage young Paspalum shoots in the initial growing period. Monitoring insect populations allows for the application of targeted chemical protection when the economic threshold is exceeded.
Competition from aggressive weeds is a serious threat during the stage of sward establishment. Rhizomatous weeds are especially dangerous as they can displace Paspalum in the first two months of development.
To prevent infections, it is recommended to follow crop rotation and avoid waterlogging, which provokes the development of root rot. A healthy, ventilated stand has natural resistance to most pathogens.
Regular soil aeration and the application of balanced micronutrients strengthen the plant's immunity, making them less susceptible to environmental stressors and phytophage invasions.
Harvesting
Harvesting Paspalum for hay or silage is carried out in the heading phase, when the nutritional value of the plant is at its peak. Later harvesting times lead to lignin accumulation and decreased palatability.
The cutting height during mechanical harvesting should be about 5-7 cm above the soil surface. This prevents damage to tillering nodes and ensures rapid subsequent regrowth.
To accelerate the drying of cut mass, tedding is applied in the first hours after mowing. This allows for reducing raw material moisture to the required 15-18% for safe storage in rolls or bales.
When using Paspalum as a pasture crop, it is important to control grazing intensity to avoid overgrazing. The optimal residual vegetation should be 4-6 cm.
The final cut at the end of the season should be carried out no later than 3-4 weeks before the first frosts. This is necessary so that the plants have time to accumulate a sufficient supply of carbohydrates in the roots for successful overwintering.