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L5 - 1 - Plant Protection > LO 6.3 - 6.4 Assessing weather conditions & Carrying out risk assessment > Flashcards

LO 6.3 - 6.4 Assessing weather conditions & Carrying out risk assessment Flashcards

- outlines suitable conditions

1
Q

Question

List 5 weather conditions.

Weather Conditions

A

Weather Conditions to assess..
* Windy
* Temperature
* Too dry
* Rainfall
* Sunshine

Weather Conditions

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2
Q

Question

How does wind effect spraying?

Weather Conditions

A

Wind
* Avoid spraying in absolutely still days, as convection currents may cause drift in unpredictable directions.

Weather Conditions

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3
Q

Question

How does Temperature effect spraying?

Weather Conditions

A

Temperature
* Especially if spraying inside glasshouse or polytunnel

Weather Conditions

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4
Q

Question

How does weather that’s too dry effect spraying?

Weather Conditions

A

Too dry
* Some residuals require moisture in the soil to work.

Weather Conditions

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5
Q

Question

How does rainfall effect spraying?

Weather Conditions

A

Rainfall
* Do not spray during or before rainfall.
* The use of sticking agents (Sprayfast) will help increase rainfastness.
* Spraying during a light mist may be beneficial, as the pores on the plant are more open and there can greater uptake chemicals.

Weather Conditions

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6
Q

Question

How does Sunshine effect spraying?

Weather Conditions

A

Sunshine
* Avoid hot sunshine (may cause scorch and burning of the foliage)
* Early morning and late evening are most effective.

Weather Conditions

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7
Q

Info Graphic

The Beaufort Scale

Weather Conditions

A

Weather Conditions

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8
Q

Info Graphic

The Beaufort Scale

Weather Conditions

A

Weather Conditions

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9
Q

Info Graphic

Spot the Problems

How many can you identify?

Weather Conditions

A

Weather Conditions

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10
Q

Question

Spot the Problems

How many can you identify?

Risk Assessment

A

Risk assessment
* Inappropriate spray nozzle
* Prevailing wind
* Respirator
* Lack of Signage
* Household gloves?

Possible contamination of:
* Humans
* Aquatic life
* Vegetables
* Hedge
* Household

Risk Assessment

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11
Q

Question

Carry out Risk Assessment

Risk Assessment

A

Carry out Risk Assessment
* Identify the hazards, assess the risk and put controls in place
* Take into account the prevailing weather conditions and how these are likely to affect the spraying operation and performance

Risk Assessment

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12
Q

Question

Important to plan ahead.

Risk Assessment

A

Mixing Pesticide Solution

Risk Assessment

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13
Q

Question

Planning the Work Area

What goes into planning the work area?

Risk Assessment

A

Planning the Work Area
* Check wind direction, work at right angles to the wind
* Never operate a knapsack while walking into the wind.

Risk Assessment

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14
Q

Question

What are the Procedures to minimise drift?

Risk Assessment

A

Procedures to minimise drift:
* Lower Pressure
* Anti-drift nozzle
* Spray at correct height
* Assess weather conditions
* Use spray hood to reduce drift
* Forward Speed

Risk Assessment

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15
Q

Question

What are the Procedures to minimise drift?

Risk Assessment

A

Procedures to minimise drift:
* Lower Pressure
* Anti-drift nozzle
* Spray at correct height
* Assess weather conditions
* Use spray hood to reduce drift
* Forward Speed

Risk Assessment

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16
Q

Question

How does lower pressure help minimise drift?

Risk Assessment

A
  • A lower pressure will give a larger droplet size, different nozzles require different pressures and modern nozzles may be able to act at both high and low pressures.
  • At low pressure the nozzle may give a larger droplet size. The same nozzle at high pressure will result in fine droplets.
  • Reducing the spray volume may result in improved coverage.

Risk Assessment

17
Q

Question

How does an Anti-drift nozzle help minimise drift?

Risk Assessment

A

Anti-Drift Nozzle
* This range of nozzles can produce a fine to coarse droplet size, depending on the pressure. The AD120-015 utilizes pressures from 1.5 to 6.0 bar. The lower pressure allows from medium droplet size while the higher pressure results in fine droplets.
* A ‘prechamber’ helps to reduce fine droplet size, giving optimised atomisation of the plant protection product.
* The prechamber or pre-atomiser may be removed without tools.
* Spray angle of 90-120 degrees and can be used with a knapsack both outdoors and in glasshouses.

Product data sheet

Risk Assessment

18
Q

Question

How does spraying at the correct height help minimise drift?

Risk Assessment

A

Spray at correct height
* Check the nozzle data sheet for the correct/ recommended spraying height.
* Clogging and spray height are the most common causes of non-uniform spray patterns, resulting in streaks, untreated areas or over use of the product.

Risk Assessment

19
Q

Question

How does assessing the weather conditions help minimise drift?

Risk Assessment

A

Assess weather conditions
* Make sure the weather conditions are conducive to pesticide application.

Risk Assessment

20
Q

Question

How does using a spray hood help minimise drift?

Risk Assessment

A

Use Spray Hood to reduce drift
* Used to prevent unwanted drift of herbicides onto non-target crops.
* The shape of the sprayhood matches the spraying pattern of a fanjet nozzle.

Risk Assessment

21
Q

Question

How does forward speed help minimise drift?

Risk Assessment

A

Forward Speed
* Make note of the terrain, is it similar to the ground you used to calibrate the knapsack?
* Walking speed is a variable in knapsack sprayer operations.
* According to research from the Tropical Pest Management Journal, training did not improve the users ability to walk at a given speed, however it did reduce the variation between different users.

Risk Assessment

22
Q

Question

What are seven ways to reduce environmental risks?

Risk Assessment

A

Reducing environmental risks:
* Following correct spray procedures
* Correct storage of chemicals
* Wearing the proper PPE
* Weather conditions
* Equipment in good working order
* Are you using the correct chemical?
* Is the product still in use?

Risk Assessment

23
Q

Question

What are six Golden rules of safe pesticide use?

Risk Assessment

A

Six Golden rules of safe pesticide use.
* Only use pesticide when necessary.
* Only use approved products.
* Store, transport and use pesticides correctly.
* Always read and follow label instructions.
* Use PPE.
* Keep detailed records:– of stock held – applications made – reason for application – result of application.

Risk Assessment

L5 - 1 - Plant Protection (48 decks)

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