Farmers considering biological crop protection usually ask practical questions first:
How much EcoRic do I need per hectare?
How many times should I spray?
When should I make the first application?
Can EcoRic be used with my current fertilizer programme?
Can I combine biological and chemical crop protection?
How much water should I use?
How long should I wait between applications?
These are the right questions. The performance of any biological agricultural product depends not only on the product itself, but also on correct dosage, application timing, crop stage, spray coverage, environmental conditions and consistency of the programme.
This guide explains how Kenyan growers can integrate EcoRic into commercial crop-management programmes for coffee, tea, roses and other cut flowers, avocado, vegetables, maize and potatoes. The most important principle is simple: EcoRic should be used as a programme not as a one-off emergency spray.
Complex Food Agro field demonstrations in Kenya have commonly used repeated EcoRic applications rather than a single treatment. In multi-crop trials, designated plots were generally treated three times at approximately 10–12-day intervals, with crop response monitored between applications. However, application rate and timing are crop- and product-specific.
EcoRic now includes several specialised product families — Grow Series, Bio Series, Protect Series and crop-specific Shield Line products such as Coffee Care, Tea Master, Flower Edition, Potato Master and Tomato Master. For this reason, growers should always follow the current EcoRic technical recommendation for the specific product and crop being treated.
Before You Spray: Understand Which EcoRic Product You Need
EcoRic is not one single product used identically on every crop. The current portfolio includes four main biological functions.
Designed primarily to support plant growth, vegetative development and nutrient assimilation.
Example: EcoRic Vitality.
Designed to support beneficial soil microorganisms, organic matter transformation and soil biological restoration.
Example: EcoRic Bioma L-Factor.
Complex Food Agro positions the Bio Series for degraded soils, intensive production systems, low-organic-matter soils and crops including coffee, tea, maize, vegetables and horticultural production.
Designed to strengthen plant defence mechanisms and support crops facing bacterial, viral and environmental stress.
Example: EcoRic Immuno.
Crop-specific formulations designed for specialised biological crop protection.
The current Shield Line includes:
- EcoRic Shield Coffee Care
- EcoRic Shield Tea Master
- EcoRic Shield Flower Edition
- EcoRic Shield Potato Master
- EcoRic Shield Tomato Master
The objective is to move from a generic biological treatment towards a crop-specific protection programme.
The Basic EcoRic Application Principle
Although the exact rate depends on crop and product, a professional EcoRic programme generally follows four stages:
- Start preventively or early
Do not wait until the crop is severely affected.
- Apply the correct crop-specific dose
More product is not automatically better.
- Repeat applications at the recommended interval
Biological crop management depends on consistency.
- Measure the result
Compare disease pressure, growth, yield, quality and total production cost.
This is particularly important for commercial farms.
EcoRic Application Summary for Kenyan Farms
The table below combines application references already published by Complex Food Agro with situations where a farm-specific programme should be confirmed before treatment.
| Crop | EcoRic Programme | Published Application Reference | Typical Programme Logic | Main Objective |
| Coffee | Coffee Care + Bioma L-Factor where appropriate | Confirm current crop-specific rate | Common demonstration structure: repeated applications with monitoring | Canopy health, biological protection, disease-pressure management |
| Tea | Tea Master + Immuno where appropriate | Confirm current technical programme | Preventive applications during active growth / disease-risk periods | Leaf health, resilience, integrated disease management |
| Roses / Flowers | Shield Flower Edition | 2 L/ha in published rose programme | Approximately every 7 days in high-intensity programme | Botrytis/downy mildew pressure, export quality, plant resilience |
| Avocado | Product combination selected according to objective | Farm-specific recommendation | Preventive programme based on crop stage | Plant health, stress resilience, fruit production support |
| Vegetables | Shield Tomato Master / other EcoRic programmes depending on crop | Crop-specific recommendation | Usually repeated biological programme rather than one spray | Disease prevention, growth, marketable yield |
| Maize | Selected EcoRic biological programme | Published example: 100 ml/10 L water | 3–5 applications every 10–12 days in one published programme | Fungal-pressure management and crop protection |
| Potatoes | Shield Potato Master | 1.2–2 L/ha foliar reference | Start around 3–5 leaf stage, repeat around every 14 days in published protocol | Plant protection and disease-risk reduction |
Published Complex Food Agro guidance for roses describes a 2 L/ha foliar programme at approximately seven-day intervals, while a potato protocol provides a 1.2–2 L/ha foliar range and roughly 14-day repetition during active growth. Separate maize guidance describes a 100 ml per 10 L spray solution and repeated applications at 10–12-day intervals.
These figures should not automatically be transferred from one crop or EcoRic formulation to another.
EcoRic for Coffee
Kenya's coffee-growing regions often experience periods of frequent rainfall, high humidity and extended leaf wetness, conditions that can increase foliar disease pressure.
A biological coffee programme should therefore focus on maintaining a strong productive canopy rather than waiting for severe foliage damage.
Complex Food Agro currently uses EcoRic Shield Coffee Care as its crop-specific biological protection product for coffee, while EcoRic Bioma L-Factor may be incorporated where microbial soil and plant support are part of the objective.
When Should Coffee Applications Start?
The best programme is generally preventive.
Possible application windows include:
- before expected periods of high disease pressure;
- during active vegetative development;
- after pruning and new shoot development;
- during periods when conditions favour leaf diseases;
- as part of a structured programme around flowering and fruit development, depending on the farm objective.
Do not wait until a large percentage of the canopy is damaged.
How Many Applications?
In the Cheborgei coffee demonstration conducted by Complex Food Agro in Kericho County between 15 June and 18 August 2026, selected coffee rows received three EcoRic applications during the trial period.
The programme combined Coffee Care with Bioma L-Factor and produced encouraging visual improvements in canopy condition and visible disease symptoms, although Complex Food Agro also notes that larger future trials should include quantitative disease scoring, exact spray volumes, yield and treatment cost per hectare.
A commercial coffee programme should therefore be developed according to:
disease pressure + weather + plant stage + previous treatments + farm history.
Coffee Programme Example
| Stage | Application Objective |
| Application 1 | Establish biological protection and support new foliage |
| Application 2 | Reinforce the programme and monitor disease response |
| Application 3 | Maintain protection and assess canopy condition |
| Further applications | Based on disease pressure and agronomist recommendation |
Monitor:
- coffee leaf rust incidence;
- new foliage quality;
- leaf colour;
- necrotic lesions;
- fruit load;
- defoliation;
- chemical fungicide applications;
- cost per hectare.
EcoRic for Tea
Tea requires a different approach because harvesting is continuous and the productive canopy must remain healthy.
Complex Food Agro currently positions EcoRic Shield Tea Master as its crop-specific solution for tea and EcoRic Immuno as a complementary biological product for strengthening natural plant defence responses.
When Should EcoRic Be Applied on Tea?
Biological protection is particularly relevant:
- during active shoot development;
- before or during periods favourable to blister blight;
- during prolonged wet conditions;
- when incorporating biological protection into an existing IPM programme;
- during periods when reducing unnecessary chemical pressure is commercially desirable.
What Should Tea Farms Measure?
Do not assess the programme only by leaf colour.
Measure:
- blister blight incidence;
- brown blight symptoms;
- shoot density;
- plucking interval;
- green leaf yield;
- percentage of damaged shoots;
- chemical fungicide applications;
- treatment cost per hectare;
- cost per kilogram of green leaf.
Complex Food Agro's existing guidance for tea emphasises prevention, monitoring, canopy management, balanced nutrition and biological protection rather than relying exclusively on fungicides.
EcoRic for Roses and Cut Flowers
Floriculture is one of the strongest applications for biological crop protection because a flower farm is not paid simply for biomass. It is paid for marketable stems of exportable quality.
Disease pressure from Botrytis, downy mildew and other pathogens can reduce:
- stem quality;
- petal quality;
- vase life;
- export percentage;
- customer acceptance.
Complex Food Agro's current crop-specific product is: EcoRic Shield Flower Edition
It was developed for professional floriculture including roses, summer flowers, lilies and intensive greenhouse production.
Published Rose Application Reference
A published Complex Food Agro rose programme recommends:
EcoRic: 2 L/ha
Application interval: approximately every 7 days
under the intensive programme described for export roses.
The actual frequency should still reflect disease pressure, greenhouse environment, crop stage and the farm's IPM programme.
When to Apply
Possible strategic application periods include:
- after pruning;
- during rapid vegetative development;
- before periods of high humidity;
- during conditions favourable to Botrytis or downy mildew;
- as part of fungicide-resistance management;
- before critical export-quality production periods.
What Should Flower Farms Measure?
Track:
- stems/m²;
- stem length;
- stem thickness;
- head size;
- Botrytis incidence;
- downy mildew incidence;
- rejected stems;
- export-grade percentage;
- vase life;
- fungicide applications;
- treatment cost per 1,000 exportable stems.
The commercial objective is not simply: “Did we spray less chemistry?”
It is:“Did we produce more marketable export stems at an acceptable cost?”
EcoRic for Avocado
Avocado production requires a long-term biological approach. Because trees remain productive for many years, programmes should consider both plant performance and soil condition.
Potential objectives include:
- root-zone biological support;
- improved nutrient availability;
- stronger vegetative growth;
- stress resilience;
- improved tree health;
- reduced disease pressure as part of IPM.
For avocado, Complex Food Agro recommends that dosage and product combination be developed according to:
- tree age;
- variety;
- irrigation system;
- soil condition;
- production stage;
- disease history;
- existing fertilizer programme.
Do not simply copy a rose or potato dosage onto avocado. A mature avocado orchard and a newly established plantation have very different canopy volumes and agronomic requirements.
What Should Avocado Farms Measure?
Monitor:
- vegetative growth;
- flowering;
- fruit set;
- fruit retention;
- root condition;
- fruit size;
- export-grade percentage;
- disease incidence;
- fertilizer expenditure;
- yield per tree;
- cost per kilogram of exportable fruit.
EcoRic for Vegetables
Vegetables are particularly suitable for controlled EcoRic demonstrations because crop cycles are relatively short.
Potential crops include:
- tomatoes;
- peppers;
- cabbage;
- onions;
- spinach;
- beetroot;
- leafy vegetables;
- other horticultural crops.
Complex Food Agro field demonstrations in Kenya have already included onions, cabbage, tomatoes, peppers, spinach, beetroot and other crops.
When Should the First Application Be Made?
For many vegetable programmes, the most useful time is early rather than late.
Possible stages include: Seed / planting material
Where the specific protocol permits seed, seedling or planting-material treatment.
Establishment
Soon after transplanting or crop establishment.
Active vegetative growth
Repeat biological protection according to the crop programme.
Disease-risk period
Continue applications where humidity, rainfall or disease history indicate increased risk.
Why Early Application Matters
A common mistake is to introduce a biological product only when the field is already experiencing severe disease. EcoRic is generally more valuable as part of:
prevention → biological establishment → monitoring → targeted intervention
rather than: severe outbreak → emergency biological spray.
If disease pressure is already high, an appropriately registered chemical treatment may need to reduce the outbreak first, after which biological protection can be incorporated into the preventive programme.
EcoRic for Maize
Maize programmes can focus on both crop health and reduction of fungal pressure during development. Complex Food Agro has published a maize-related EcoRic programme using: 100 ml EcoRic per 10 litres of water with: 3–5 treatments at approximately: 10–12-day intervals in the programme described.
Example Maize Programme
Before / early crop development
Establish good agronomic conditions and identify disease risks.
Application 1
Begin biological crop protection.
Application 2
Approximately 10–12 days later.
Application 3
Approximately 10–12 days later.
Applications 4–5
Where crop conditions and disease risk justify continuation.
Monitor:
- leaf condition;
- fungal lesions;
- plant height;
- crop uniformity;
- ear development;
- disease incidence;
- final grain yield;
- grain quality;
- total treatment cost.
EcoRic for Potatoes
Potatoes present an important opportunity for integrated biological programmes because planting material and early plant development can both be targeted. A published Complex Food Agro protocol describes a two-stage strategy.
Stage 1 - Tuber Treatment
Before planting, seed tubers may be treated according to the current potato protocol.
One published recommendation describes either:
- a 1:100 solution for soaking, or
- approximately 1–2 L of EcoRic per tonne of tubers when applied as a treatment.
Because different Complex Food Agro publications contain variations in pre-plant potato protocols, farms should confirm the current Potato Master technical recommendation before treating commercial seed lots.
Stage 2 - Foliar Programme
Published guidance gives a foliar application reference of: 1.2-2 L/ha
starting around the: 3-5 leaf stage
and repeating approximately: every 14 days
depending on crop and disease conditions.
Potato Programme Example
| Crop Stage | Objective |
| Pre-planting | Biological treatment of planting material |
| 3–5 leaf stage | First foliar protection |
| ~14 days later | Reinforcement |
| Before / around hilling | Continue protection where required |
| High-risk periods | Adjust according to disease pressure |
Monitor:
- emergence;
- crop uniformity;
- stem condition;
- early blight symptoms;
- bacterial wilt symptoms;
- tuber number;
- tuber size;
- marketable yield;
- treatment cost per tonne.
How Much Water Should You Use?
This is one of the most misunderstood questions in spray programmes.
There is an important difference between: Product rate
For example: 2 L of EcoRic per hectare
and:
Spray volume
For example: 200, 400 or 500 litres of total spray solution per hectare.
These are not the same thing.
The required water volume depends on:
- crop canopy;
- plant density;
- crop stage;
- sprayer type;
- nozzle;
- operating pressure;
- target coverage;
- greenhouse vs open field.
The objective is to achieve uniform coverage without unnecessary runoff. A small young crop may require much less total water than a mature dense canopy.
Therefore: Calibrate the sprayer first.
Then calculate the EcoRic quantity according to the required hectares and approved product rate.
Example: 20-Litre Backpack Sprayer
Imagine the approved programme calls for: 2 L EcoRic/ha
and your calibrated sprayer uses: 400 L water/ha.
You need: 400 L total spray solution ÷ 20 L backpack = 20 backpack loads per hectare
The EcoRic quantity per backpack becomes: 2,000 ml ÷ 20 = 100 ml EcoRic per 20-L backpack
This is why simply telling farmers: “Put X ml in a knapsack” can be misleading.
The correct calculation begins with: application rate per hectare + calibrated water volume.
How Often Should EcoRic Be Applied?
There is no single universal interval for every crop. Published Complex Food Agro programmes currently include examples such as:
- approximately 7 days - intensive rose programme;
- 10–12 days - multi-crop and maize field programmes;
- 10–14 days - some horticultural biological programmes;
- approximately 14 days - published potato foliar programme.
Therefore, the correct question is not: “Is EcoRic sprayed every 7 or every 14 days?”
It is: “What interval applies to this EcoRic product, this crop and this disease pressure?”
What Time of Day Should EcoRic Be Applied?
For biological foliar applications, avoid the most stressful spraying conditions. In many Kenyan production areas, the better operational windows are commonly:
- morning after heavy dew has reduced; or
- late afternoon / early evening.
Avoid, where possible:
- extreme midday heat;
- very strong sunlight;
- strong wind;
- spraying immediately before heavy rain;
- severe plant water stress.
One Complex Food Agro maize field trial in Meru applied EcoRic at approximately 5:30 PM under calm conditions, providing an example of practical evening application. The objective is to provide sufficient contact time and good coverage.
Can EcoRic Be Used With Fertilizers?
EcoRic is intended to be incorporated into integrated crop-management and nutrition programmes rather than automatically replacing all fertilizers. Complex Food Agro's Bio Series is specifically positioned to support biological soil activity and improve the efficiency of nutrient utilisation within conventional production systems.
However, two different questions must be separated:
Can EcoRic be used on a farm that also uses fertilizers?
Yes - this is a core part of integrated production.
Can EcoRic be physically mixed in the same spray tank with a specific fertilizer?
That requires compatibility confirmation for the exact product.
Do not assume that all foliar fertilizers, acids, disinfectants or highly concentrated salts are automatically compatible with a living microbial product.
Can EcoRic Be Used With Chemical Fungicides?
Yes, EcoRic can be incorporated into farms that also use chemical fungicides.
But again, there is a major difference between: using biological and chemical treatments within the same crop programme
and: mixing both products in the same tank.
Some EcoRic programmes can operate alongside conventional fungicide strategies, particularly where chemical treatment is used to control high disease pressure and biological protection supports subsequent preventive management.
Complex Food Agro has published integrated maize guidance combining biological treatments with systemic fungicide intervention under severe disease pressure.
However:Do not create an unverified tank mix.
Before mixing EcoRic directly with:
- fungicides;
- bactericides;
- copper products;
- disinfectants;
- foliar fertilizers;
- insecticides;
- pH modifiers;
confirm compatibility with Complex Food Agro or the applicable technical instruction. Some chemical products may reduce the viability or activity of beneficial microorganisms.
When Should You Expect Results?
Biological products should not always be judged like contact pesticides.
A farmer may observe early changes such as:
- greener foliage;
- improved new growth;
- better crop uniformity;
- reduced appearance of new disease lesions;
- improved plant vigour.
In one Complex Food Agro maize demonstration, visible differences were reported approximately ten days after the first treatment. In the Cheborgei coffee demonstration, the strongest assessment was made after completing the three-application programme.
Therefore: Do not judge the entire programme after one spray.
Instead assess the crop at consistent intervals.
For example:
Day 0 - Before treatment
Day 10 - Before second treatment
Day 20 - Before third treatment
Final assessment - after completion of programme
Take Before-and-After Photos Correctly
If you want to understand whether EcoRic is working, photographs should be taken systematically.
Use:
- the same crop rows;
- the same direction;
- approximately the same distance;
- similar time of day;
- treated and untreated reference areas;
- close-up and whole-canopy photographs.
Do not compare one healthy treated plant with one randomly selected diseased control plant. For commercial trials, consistency matters.
The 10 Most Common EcoRic Application Mistakes
- Using Too Much Product
Some growers assume: “If 2 litres works, 4 litres will work twice as well.”
This is not good agronomy.
Follow the crop-specific recommendation.
- Using Too Little Product
Underdosing may provide inadequate coverage or biological activity.
Always calculate the quantity according to actual treated area.
- Measuring by Backpack Instead of by Hectare
“100 ml per knapsack” means very little unless the sprayer's application volume per hectare is known.
Calibrate the sprayer.
- Waiting Until Disease Is Severe
Biological programmes generally perform best when introduced preventively or during early disease pressure.
Do not expect a biological product to act as an instant rescue treatment for a severely damaged crop.
- Making Only One Application
EcoRic should usually be considered a programme.
Many Complex Food Agro field demonstrations have used repeated applications, commonly three treatments or more depending on crop and objective.
- Using the Wrong Spray Interval
Spraying too early may waste product.
Waiting too long may interrupt the protection programme.
Follow the crop-specific interval.
7. Making Unverified Tank Mixes
Do not automatically combine EcoRic with every fungicide, copper product, fertilizer or pesticide in the spray store.
Confirm compatibility first.
- Spraying Immediately Before Heavy Rain
If a foliar application is washed from the plant before adequate contact occurs, treatment performance may be compromised.
Check weather conditions before spraying.
- Failing to Establish a Control Plot
Without a comparison, it is difficult to know whether changes came from EcoRic, weather, fertilizer, irrigation or normal plant development.
For first-time commercial use, establish:
Control Block vs EcoRic Block.
- Looking Only at Colour
Greener leaves are useful observations, but they are not enough.
Measure:
- disease incidence;
- yield;
- quality;
- marketable percentage;
- number of chemical sprays;
- production cost.
For commercial farms, the final question must be: Did the programme improve profitability?
A Practical EcoRic Trial Protocol
For farms using EcoRic for the first time, Complex Food Agro recommends a structured demonstration rather than changing the entire farm immediately.
Step 1 - Select Comparable Areas
For example: 5 ha control and 5 ha EcoRic programme
Step 2 - Record the Baseline
Before application, record:
- crop stage;
- disease incidence;
- plant condition;
- existing fertilizer programme;
- fungicide programme;
- photographs;
- expected yield.
Step 3 - Apply the Correct EcoRic Programme
Record:
- product;
- batch;
- rate;
- water volume;
- sprayer;
- date;
- time;
- weather.
Step 4 - Repeat According to the Programme
Do not change the interval randomly unless agronomic conditions justify it.
Step 5 - Evaluate
At the end compare: Control vs EcoRic
using:
- crop health;
- disease pressure;
- yield;
- quality;
- chemical applications;
- fertilizer use;
- total cost;
- marketable output.
This becomes extremely useful when management later calculates:
treatment cost per hectare;
reduction in chemical applications;
yield response;
return on investment.
How to Calculate EcoRic Cost per Hectare
Suppose:
EcoRic price = KES X/L
Application rate = 2 L/ha
Number of applications = 3
Product cost becomes: X × 2 × 3 per hectare.
Then add:
- labour;
- spraying equipment;
- fuel where applicable;
- water preparation;
- other programme costs.
Compare this against:
- chemicals reduced;
- fertilizer reductions where demonstrated;
- disease losses avoided;
- quality improvements;
- additional marketable yield.
Do Not Ask Only: “How Much Does EcoRic Cost?”
The better question is: “What does the entire programme cost per marketable unit produced?”
For coffee: KES/kg coffee
For tea: KES/kg green leaf
For potatoes: KES/tonne
For vegetables: KES/kg marketable produce
For avocado: KES/kg export-grade fruit
For flowers: KES/1,000 exportable stems
That is the metric that matters commercially.
Which EcoRic Programme Is Right for Your Farm?
A 2-hectare tomato grower and a 500-hectare tea estate should not receive the same recommendation. A correct programme needs to consider:
- crop;
- variety;
- acreage;
- county;
- soil;
- rainfall;
- irrigation;
- disease pressure;
- fertilizer programme;
- fungicide programme;
- production objective;
- export requirements.
That is why the best EcoRic programme begins with information about the farm.
Calculate Your EcoRic Requirement
Use this formula: Farm Size × Dose per Hectare × Number of Applications
Example:
Farm size: 25 hectares
Recommended dose: 2 L/ha
Applications: 3
EcoRic per application:
50 litres
Total EcoRic programme:
150 litres
For acreage: Acres ÷ 2.471 = Hectares
Then apply the same calculation.
Request an EcoRic Programme for Your Farm
Not sure which EcoRic product, dosage or application interval is suitable for your crop? Send Complex Food Agro your current farm information.
We will prepare a crop-specific EcoRic application programme for your farm.
Please provide:
- Crop
- Variety
- County / location
- Farm size - acres or hectares
- Current crop stage
- Main disease or production problem
- Current fertilizer programme
- Current fungicides / pesticides
- Sprayer size
- Approximate water volume per hectare
- Irrigation system
- Phone / WhatsApp
Our agronomy team can use this information to recommend:
EcoRic product
Application rate
Number of applications
Spray interval
Water-volume calculation
Compatibility with your existing programme
Control vs EcoRic trial design
Final Principle: Correct Application Is More Important Than Maximum Application
EcoRic should not be treated as a product where more automatically means better.
The strongest biological programme is based on:
Right product
Right crop
Right dose
Right timing
Right spray coverage
Right interval
Right measurement
Kenyan farms can then evaluate EcoRic according to what ultimately matters: healthier crops, controlled disease pressure, marketable yield, reduced unnecessary inputs and stronger profitability per hectare.