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The Citrus Program

The citrus program
The Petrik Soil Technology focus is to increase yield, improve fruit quality, and better manage the plant and soil health issues facing citrus growers.

Biological Inputs and Soil Health

Citrus trees benefit enormously from biological balancing. In citrus we pay significant attention to nutrient availability through soil health and biological inputs.

In orchard systems, the use of Digestor and its activator Green Manure Plus has transformed the results for growers.

Soil Structure

The soil inoculants improve the soil structure, water infiltration and rooting depth and mass. The gains transfer through to plant robustness, disease management and fruit quality.

Pest Management Support

Soil inoculants support the work of IPM. When the plant gets its nutrition from its own plant driven fertile system, less nitrogen and other inputs that attract pests are in the system. Through the use of biology we can maintain peak productivity with lower nitrogen inputs that are known to light up pest activity.

Nutrient Availability

Phosphorus availability is highly linked to proliferation of specific phosphorous solubilising biology. When phosphorous is supplied to the plant via this mechanism the supply of phosphorus becomes plant driven, meaning nutrient supply increases at the stages the plant demands it.

Custom Foliars

Impulse Mineral Foliars can be custom formulated to your farm requirements. This helps growers achieve improved results without input cost wastage. We also have a range of standard Impulse Mineral foliars available in or core minerals.

Growth Support and Biological Foliars

In tree crops and orchard plants we have had great success using the bio-stimulant foliar Setbest for its powerful growth support mechanism.

It works through biological pathways to provide maximum plant resilience at the key growth stages - flowering, fruit set and fruit fill. It also can be applied to support stress recovery in citrus.


A microbial soil inoculant
Digestor is a live biological soil inoculant. Its unique combination of multi-strained microbes, fungi and beneficial bacteria build humus, improve soil structure and boost crop performance. It contains species of biology that work in conjunction with both monocot and dicot plants. Digestor is formulated for Horticulture, Orchards and Broadleaf.

Green Manure Plus
Green Manure Plus

The microbial activator
Green Manure Plus is a vital activating blend of kelps and core biological essentials that is applied together with our soil inoculants Digestor or Evergreen. It contains essential “growth food” for microbial proliferation providing vital support during the initial establishment.


A powerful quality and health stimulant
Setbest improves flowering, aids fruit setting and boosts the overall health and sizing. It optimises nutrient availability at critical stages of plant growth and supports root system mycorrhizal colonies. Setbest builds plant resilience, helps plants recover from damage and is highly effective in all crop types.

Impulse Foliars
Impulse mineral foliars

Rapid uptake of nutrients
Impulse Mineral Foliars supply plants with a highly available form of minerals to increase crop performance or enable rapid recovery from mineral deficiency. Contain biologically complexed minerals combined with microbially digested plant material. This combination provides maxiumum mineral uptake and unsurpassed bio-availability for the plant, meaning smaller amounts of the total mineral content have a greater effect.