🌾 Knapsack Calibration

🌾 HOW TO USE THE KNAPSACK CALIBRATION APP

 

(Fish Silage – Sugar Cane)

BEFORE YOU START

Use a disc nozzle (no spinner)

Use clean water

Pump the sprayer to your normal spraying pressure

Do this in the field, not at home

STEP 1: MEASURE NOZZLE FLOW (LITRES PER MINUTE)

 

What you need

Knapsack sprayer

Bucket

Measuring jug or bottle with marks

Stopwatch or phone timer

 

What to do

Fill the sprayer with clean water

Pump to normal pressure

Hold the bucket under the nozzle

Spray into the bucket for 60 seconds

Measure how many litres are in the bucket

Enter this number in the app under

“Nozzle flow rate (L/min)”

 

👉 Example:

If you collect 1 litre in 60 seconds, enter 1.0

STEP 2: MEASURE WALKING SPEED

 

What you need

Rope or tape

Stopwatch or phone

 

What to do

Measure 50 metres in the field

Mark start and finish

Walk at your normal spraying pace

Time how many seconds it takes

Enter the seconds in the app

under “Seconds to walk 50 m”

Press CALCULATE WALKING SPEED

 

👉 The app will show your walking speed (km/h)

👉 Normal speed is about 3 to 4 km/h

STEP 3: CHECK ROW SPACING (SWATH WIDTH)

For sugar cane, row spacing is 1.2 m

The app already shows 1.2

Only change it if your rows are different

STEP 4: CALCULATE WATER RATE (L/ha)

Make sure these are filled in:

Nozzle flow rate

Walking speed

Row spacing (1.2 m)

Press CALCULATE L/ha

 

The app will show:

Water rate in litres per hectare (L/ha)

 

👉 This number is very important

👉 The app will automatically copy it to Step 2

STEP 5: MIX FISH SILAGE (200 L TANK)

 

What to do

Look at “Your Water Volume (L/ha)”

This should already be filled in

Choose Application type:

Foliar spray (on leaves)

Soil drench (on soil)

Check Tank Size

Usually 200 litres

Press CALCULATE MIX

 

The app will tell you:

How many litres of fish silage to add to the tank

 

👉 Example:

“Add 2.40 litres of fish silage into the 200 L tank”

STEP 6: MIXING ORDER (VERY IMPORTANT)

Fill tank 70% with clean water

Measure fish silage in a bucket

Add fish silage into tank while mixing

Add humic or seaweed products

Add microbes last

Top up with water to full tank

Spray the same day

 

⚠️ Do not store mixed fish silage overnight

STEP 7: CHECK YOUR CALIBRATION (FIELD TEST)

Spray 1 sugar cane row for 100 m

Row spacing = 1.2 m

Area sprayed = 0.012 ha

Measure how many litres of water you used

Calculate:

 

L/ha = litres used ÷ 0.012

 

👉 If this is close to the app result (±10%),

👉 your calibration is correct

IMPORTANT TIPS

Calibrate every new nozzle

Recheck calibration every month

Change nozzle size first, not pressure

Walk at the same speed when spraying

🌾 INDLELA YOKUSEBENZISA I-APP YOKULINGANISA IKNAAPSACK

 

(Fish Silage – Umoba)

NGAPHAMBI KOKUQALA

Sebenzisa i-nozzle yediski (engenayo i-spinner)

Sebenzisa amanzi ahlanzekile

Phampa umshini ku pressure ojwayelekile wokufafaza

Yenza lokhu ensimini, hhayi ekhaya

ISINYATHELO 1: LINGANISA UKUPHUMA KWE-NOZZLE

 

(Ama-litre ngomzuzu – L/min)

 

Okudingayo

Umshini wokufafaza (knapsack)

Ibhakede

Isilinganisi samanzi noma ibhodlela elinemigqa

I-stopwatch noma ifoni

 

Okufanele ukwenze

Gcwalisa umshini ngamanzi ahlanzekile

Phampa ku-pressure ojwayelekile

Bamba ibhakede ngaphansi kwe-nozzle

Fafaza ebhaketheni imizuzwana engu-60

Linganisa ukuthi mangaki ama-litre asebhakedeni

Faka le nombolo ku-app lapho kubhalwe

“Nozzle flow rate (L/min)”

 

👉 Isibonelo:

Uma uthole 1 litre ngemizuzwana engu-60, faka 1.0

ISINYATHELO 2: LINGANISA ISIVININI SOKUHAMBA

 

Okudingayo

Intambo noma itheyiphu yokukala

I-stopwatch noma ifoni

 

Okufanele ukwenze

Kala amamitha angu-50 ensimini

Maka lapho uqala nalapho uqeda

Hamba ngesivinini ojwayele ukufafaza ngaso

Bheka ukuthi kuthatha imizuzwana emingaki

Faka imizuzwana ku-app lapho kubhalwe

“Seconds to walk 50 m”

Cindezela CALCULATE WALKING SPEED

 

👉 I-app izokubonisa isivinini (km/h)

👉 Isivinini esijwayelekile: 3 kuya ku-4 km/h

ISINYATHELO 3: QINISEKISA IBANGA LEMIGQA

 

(Row spacing / Swath width)

Emobeni, ibanga liyu 1.2 m

I-app isivele ikhombisa 1.2

Shintsha kuphela uma imigqa yakho ihlukile

ISINYATHELO 4: BALA AMANZI NGE-HEKTHA

 

(L/ha)

Qinisekisa ukuthi lokhu kugcwalisiwe:

Ukuphuma kwe-nozzle

Isivinini sokuhamba

Ibanga lemigqa (1.2 m)

Cindezela CALCULATE L/ha

 

I-app izokukhombisa:

Ama-litre amanzi nge-hektare (L/ha)

 

👉 Lena yizinombolo ezibalulekile

👉 I-app izozifaka yona ngokuzenzakalelayo ku-Step 2

ISINYATHELO 5: HLANGANISA I-FISH SILAGE

 

(Ithangi lama-200 L)

 

Okufanele ukwenze

Bheka lapho kubhalwe

“Your Water Volume (L/ha)”

Kufanele sekuvele kugcwalisiwe

Khetha uhlobo lokufafaza:

Foliar spray (emacembeni)

Soil drench (emhlabathini)

Hlola usayizi wethangi

Imvamisa 200 L

Cindezela CALCULATE MIX

 

I-app izokutshela:

Mangaki ama-litre e-fish silage okufanele uwafake ethangini

 

👉 Isibonelo:

“Faka 2.40 litres ze-fish silage ethangini lama-200 L”

ISINYATHELO 6: INDLELA YOKUXUBA (IBALULEKE KAKHULU)

Gcwalisa ithangi ngo-70% wamanzi ahlanzekile

Linganisa i-fish silage ebhakedeni

Faka i-fish silage ethangini ngenkathi uhlanganisa

Faka ama-humic noma ama-seaweed

Faka ama-microbes okokugcina

Gcwalisa ithangi libe ligcwele

Fafaza ngosuku olufanayo

 

⚠️ Ungayigcini i-fish silage ehlanganyelwe ubusuku bonke

ISINYATHELO 7: HLola UKULINGANISA ENSIMINI

Fafaza umugqa owodwa womoba amamitha angu-100

Ibanga lomugqa = 1.2 m

Indawo = 0.012 hektare

Kala ukuthi usebenzise amanzi angaki (ama-litre)

Bala kanje:

 

L/ha = ama-litre asetshenzisiwe ÷ 0.012

 

👉 Uma inombolo iseduze naleyo ye-app (±10%),

👉 ukulinganisa kulungile

AMACEBISO ABALULEKILE

Linganisa njalo uma ushintsha i-nozzle

Phinda ulinganise inyanga yonke

Lungisa usayizi we-nozzle kuqala, hhayi i-pressure

Hamba ngesivinini esifanayo lapho ufafaza