Introduction

665
Approved for use on the following stored grains: Barley, corn, dried peas, lentils, oats, rice, rye, soybeans, sunflower
seeds, triticale and wheat.
Restricted Product: The use and sale of Aluminum Phosphide (Phostoxin) is restricted to licensed pesticide applicators
possessing a valid fumigation license (Saskatchewan) or stored agricultural products license (Manitoba).
Phostoxin can only be used in conjunction with a detailed fumigation management plan.
Rate and Minimum Exposure Period: Refer to labels to determine rate. For grain bins a dosage of 250-500 tablets
(or 880- 2560 pellets) per 100m 3 of bin space being treated (not volume of grain) is recommended. It is important to ensure
that bins are relatively secure. It is not advisable to use phosphine products in bins that are leaky or not well sealed.
The following table may be used as a guide to determine the minimum length of exposure period to phostoxin at the
indicated temperatures:
Temperature
Exposure Period
Below 5°C (40°F)
Do not fumigate
5°C-12°C (40°-53°F)
10 days
13°-15°C (54°-59°F)
5 days
16°-20°C (60°-68°F)
4 days
above 20°C (68°F)
3 days
Phostoxin can not be used when the grain temperature is below 5°C as the tablets release the gas too slowly. Very dry grain
will also slow the release of the gas from the pellets. A shortened exposure period cannot be compensated for by increased
dosage. Also ensure that storage is well ventilated for at least 24 hours after the required time for fumigation.
Protect-It, Insecto
Company: Hedley Technologies Ltd. (Protect-It) PCP#24259; Natural Insecto Products Inc. (Insecto) PCP#22489
Formulation: 90 percent Diatomaceous Earth (DE)
Insects controlled: Rusty grain beetle (Protect-It only), rice weevil, granary weevil, Angoumois grain moth, Mediterranean
flour moth, Indian meal moth, red flour beetle and Tribolium.
Approved for use on the following stored products: Feed grains, seed, stored grains, wheat, barley, buckwheat,
corn, oats, rye, flax, peas, soybeans and sorghum. Also registered for structural treatment of empty grain storage and
transportation containers.
How it works: Diatomaceous earth damages the cuticle of the insect, reducing the insect’s ability to retain moisture. The
insect eventually dies from dehydration.
Rate, for empty storage structures: Use a dust blower or aeration fan to get diatomaceous earth into the cracks, crevices
and void spaces of the structure being treated. Dust areas at a rate of 1 kg per 200 square metres (5 g/m 2 ).
Rate, while grain is being placed into storage:
º Protect-It: The application rate for Protect-It varies by crop and insect species, ranging from 100 g/tonne for
control of rusty grain beetle in wheat to 1000 g/tonne for red flour beetle in corn. Refer to the label for details.
º Insecto: Apply to grain at the time of storage at a rate of 0.5 to 1 kg per metric ton of grain (500-1000 ppm).
Precautions: The application of DE will lower the test weight measurement of the grain, but usually not to the point of
downgrading. If test weight loss is excessive, the grain can be diluted with untreated grain. DE is non-toxic to humans and
animals.
Insect Control