Grass Grub & Porina – Field Results & Agronomic Interpretation
Protecting Pastures with Natural Soil Support
Grass grubs and porina can reduce pasture growth, weaken plants, and limit nutrient uptake. Field observations show that pastures supported with DCT products recover faster, maintain growth, and experience fewer pest impacts over time.
This isn’t because the products directly kill pests — rather, they support natural predators in the soil, improve nutrient cycling, and enhance plant resilience.
Field Observation Summary
Treated pastures showed fewer visible pest impacts over multiple seasons.
Root and shoot growth were more consistent in areas with biological support.
Soil monitoring indicated higher microbial activity, suggesting stronger natural predator populations and better nutrient cycling.
Evidence Context
Important context
Results were observed across multiple soil types and farm systems. Outcomes will vary depending on pasture species, soil fertility, and pest pressure.These observations are supportive evidence, not a guaranteed replacement for targeted pest management in severe infestations.
Agronomic Interpretation
Grass grub and porina pressure is influenced by multiple soil and plant factors:
Weakened pastures are more vulnerable to pest feeding.
Low soil biology reduces natural predator populations and slows pasture recovery.
Nutrient inefficiency limits regrowth after pest damage.
Supporting soil biology and nutrient cycling strengthens pastures, making them less hospitable to pests and more resilient if damage occurs.
Where This Fits in the Farming System
DCT biological support products enhance soil function and natural predator activity.
They are part of a system-based approach, complementing pasture management and monitoring.
Regular application helps pastures recover faster, reducing the impact of pests without relying solely on chemical controls.
Products Used in the System
Lazerhume – Improves soil biology, supporting natural predator populations and nutrient cycling.
Restore – Adds extra biological support to stressed pastures, improving recovery.
Turbo N – Supports nitrogen efficiency, promoting rapid regrowth after pest feeding.
Optimise iO – Enhances microbial activity and nutrient availability, increasing pasture resilience.
Agronomy Insight
Agronomy insight
Pest damage is rarely caused by a single factor. By supporting soil biology and nutrient availability, plants develop stronger root systems and recover faster from feeding damage, reducing visible impacts and improving long-term pasture productivity.
When This Approach Has Limits
Extremely high pest infestations may still require monitoring or targeted intervention.
Very poor pasture condition or low soil fertility may limit recovery speed.
Even in these cases, DCT products improve soil function, plant growth, and natural predator activity, supporting longer-term pest management.
Key Takeaway
Supporting soil biology, nutrient cycling, and natural predator activity strengthens pastures, helping them recover faster from pest damage and experience less impact from grass grubs and porina. Using DCT products is a natural, effective way to support pasture resilience.