Greenhouse Fumigator or Vapourizor – electrically operated – August 2020

As promised in previous post, here is our personal views on an electrically operated Greenhouse Fumigator.

We have no affiliation with any of the manufacturer’s or suppliers in this post. And we are not professionally qualified to give medical advice. It is our own personnal opiniums.

Sulphur fumigation

Sulphur fumigation

Always read the Suppliers details and the Health and Safety documentation before proceding.

BACKGROUND INFO

Just for a bit of background info, this type of fumigator can be used with Sulphur UK name (Sulfur US name, Flowers of sulphur, Brimstone, Elemental sulfur ). This fumigator can also it can be used with other chemicals, but this outside of our brief and experience.

Sulphur Powder

Sulphur Powder

Sulpur has a Melting Point of 115.21 °C the powder turns to liquid at approximately 145-150 °C, it then only disipates as sulphur vapour.

Sulphur Liquid

Sulphur Liquid

Both molten and solid forms are combustible and will ignite at high temperatures (>200°C), burning with a pale blue flame that may be difficult to see in daylight. When it ignites Sulphur Dioxide is produced.

It is at this point that caution must be mentioned Sulpur Dioxide must not be mixed with water, as this will produce a weak sulphuric acid (H2SO3). Avoid breathing the fumes from a burning sulphur candle as the Sulphur Dioxide (SO2) that is given off will irritate your nose and throat, irritation will also occur on the moist surface of the eye.

Sulphuric acid can errode alluminium greenhouses and staging. I remember leaving a tin of Bordeaux mixture on some alluminium staging trays. At the end of winter I had a hole with the tin on the floor.

However in this instance the Fumigator is thermostatically controlled to within 145-150 °C, it then only disipates as sulphur vapour. There is not adjustments for temperature it is fixed, this is good when using unskilled personnel.

Sulphur fumigation

Sulphur fumigation

Sulphur fumigation

Sulphur fumigation

Sulpur vapour has less of a dangerous, and it is generally an allowed as an approved pesticide in organic gardening (please check 1st).

TARGET SPECIES

Sulphur vapour kills mould spores, preventing the spread of fungi and rot fungicide against black spot, powdery mildew and rust. Sulphur is also toxic to spider mites and various other grow-room pests. Also thrips, aphids and psyllids. However beneficial used as biological can be effected, and also moluscs, and small animals and Amphibians.

Will not harm beneficial insects including honeybees.

LIMITATIONS

Ensure that sulphur is safe for the species of plants you need to treat. Sulphur proves toxic to several plant species whilst in leaf these include grapes, apple, pear, blueberry, currants, gooseberry, apricot, brambles, peaches and vine crops. Over winter it is effective on overwintering pest insects.Special precautions must be taken when using with Delicious or Cox’s Orange Pippin apples and there X’s.

Check on a sample first before you do your whole greenhouse.

CHECK BEFORE USE

Damage include scorching, dwarfing of leaves, rolling of leaves downwards,  premature defoliation and reduced yields

Lichens and bryophytes are among the most sensitive and have been successfully used as indicators of sulphur dioxide pollution.

USE OF FUMIGATOR.

One fumigator  is suitable for 100m sq floor area, so that would cover most domestic greenhouses. All window and doors shut, and plan to start in the evening. The advice is switch off everthing electrical. But I prefer to get my high output fan running, just to ensure though distribution of the vapour.

Greenhouse Fan

Greenhouse Fan

The location of the fumigator is recommened to be 1m below the appex, which is not a bad height, as I don’t bang my head on it.

DOSAGE

2 gram dose of sulphur over an 8 hour period ensuring there is no wastage. There is a marker on the cup, which when filled will give 150 hours use. The application is recommended that it is used during night time, and of varying doseages every other night over a 2 week period, this is shown in the instruction manual. A electrical timer is recommended.

TOO MUCH SULPHUR SIDE EFFECTS

Too much sulphur can change the PH of soil, so care has to be taken and steps take to reduce PH or inrease PH. Sulphur is the element usually recommended for increase acidification of the soil.

PPE

Sulphur Warnings

Sulphur Warnings

 

  • Chemical-resistant rubber gloves
  • Safety goggles
  • Dust mask
  • Protective clothing
  • Pump sprayer
  • Soap

Other PPE must be used where instructed in supplies / manfacturers documentation. Always ask first.

OTHER USES

The first use of lime sulphur for the control of peach leaf curl was in California in 1886. It’s made by reacting together sulphur and builder’s lime (calcium hydroxide) – which is different to garden lime (calcium carbonate).

Lime sulphur can be used during dormancy to control a range of fungal diseases including Black Spot, Powdery Mildew, Freckle, Leaf Curl, Rust, Shot Hole and Brown Rot, as well as various Scale and Mite pests.

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Testing of Greenhouse Fumigator – August 2020

READ THE MANUFACTUERS INSTRUCTIONS FIRST

There has been a lot of discussion on the internet forums as to the value for money of Greenhouse Fumigator (the ones you set light to).

The main discussion seems to be the amount of chemicals and the length of time for a smoke.

The chemical weight is 3.5 grams per fumigator, which should be enough for an 8 x 6 greenhouse. The greenhouse I have in the back garden is double that size, so I used 2 fumigators. The active chemical is Permethrin 13.25% w/w.

This is an insecticide smoke to kill flying and crawling insects in greenhouses. It can be used against houseflies, cluster flies, fruit flies, mosquitoes, wasps, moths, ants, cockroaches and stored-product insects such as saw-toothed grain beetle and adult grain weevils.

The Greenhouse Fumigator may also be used in zoos, pet shops, kennels, veterinary practices and laboratory animal houses (excluding animal pens and cages), but is not for use on grain or in empty grain stores. It leaves no smell or visible deposits.

We are only testing the amount of smoke, not its effectiveness.

Greenhouse Fumigator Ignition

 Make sure the greenhouse is air tight, windows, doors and louvres shut.

Greenhouse Fumigator mid Smoke

This is mid smoke, approx 30secs of a total smoke time of 1 minute. Note that the smoke is not being blown about by external wind blowing in.

Greenhouse Fumigator 5 minutes

This is now 5 minutes after ignition, still smoke lingering in the atmosphere.

Please read the tin / instructions for access time and side effects to certain plants, and withdrawl days for food crops.

READ THE MANUFACTUERS INSTRUCTIONS FIRST

COMING SOON – Electrical Sulphur (Sulfur) Fumigator

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Sorbus – Sorbopyrus. ‘burka’ – Hybrid – August 2020

Sorbus – Sorbopyrus. ‘burka’ – Hybrid is extremely hardy hybrid between Sorbaronia alpina (Aronia arbutifila x Sorbus aria) and Sorbus aucuparia, cultivated with an eye on the fruit production.

Carrying large red/purple fruits that are sweet when ripe, 2 cm in diameter. Magnificent colours of the autumn leaves.

This Sorbus needs a sunny to light shaded spot on a moist soil.

Sorbus ‘Burka’

 

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Plum – Black Diamond® (USA) ripe 8th August 2020

Plum – Black Diamond® (USA) ripe 8th August 2020. Our tree is still quite young, and it is not growing in the most ideal location. These are the first fruits that we have harvested off this variety.

The fruit is quite large 100-110 grams. The colour of the fruit is bright dark red/purple almost changing to black when fully ripe. It has bright red flesh with exceptional flavor, sweetness and a crisp, juicy texture.

It is resistant to diseases and quite cold hardy, and it is regarded as one of the best plums.

Black Diamond®

 

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Plum – Aleksona (Lithuanian) ripe 8th August 2020

Plum – Aleksona (Lithuanian) ripe 8th August 2020. Our tree is still quite young, and it is not growing in the most ideal location. These are the first fruits that we have harvested off this variety.

It is of average growth, but it can tend to overcrop. It is then advised to thin the fruit tree.

The fruit is large, 50-60g each. The colour of the fruit is bright pink, with an orange/yellow hue in the shade, with a very heavy bloom on them. This rubs off easily.

It is resistant to diseases and quite cold hardy.

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A new apple variety ‘Agra’ from Latvia, ripe 24th July 2020

This is a new variety that we purchased from Latvia a couple of years ago.

Breeder: Rudolfs Dumbravs
Breeding place: Iedzeni, Madonas county, Latvia
Holder: APP Darzkopibas instituts
Approved on: 31/01/2002
Future expiration date: 31/12/2032

A very early summer variety from Latvia. The fruits are of medium size, completely red in colour. Must be eaten straight away or used for juicing. The wood is winter hardy and healthy.
This variety is regarded as being of high value.

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A new variety to us – Apple – Pirja 23rd July 2020

A Finnish breed from 1981, which is a cross between the varieties ‘Huvitus’ and ‘Melba’. A slow-growing tree that has medium-sized, flat-round, green-yellow apples with a red to red-striped cover colour that covers almost the entire fruit. It has a white and fine flesh that is healthy, sweet and sour and aromatic. Is a dessert fruit and is eaten directly from the tree with a relatively short shelf life. Gives the best harvest in a sunny location on nutrient-rich and well-drained soil.

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Plum – Najdena (Russian) ripe 22nd July 2020

Plum – Najdena (Russian) ripe 22nd July 2020. This is the first fruits that we have harvested off this variety.

It is quite nice, with a sweet yellow flesh, with dark purple skin when fully ripe. However it is not self fertile.

Russian Plum NAJDENA is a complex hybrid of Prunus cerasifera, Prunus salicina, Prunus ussuriensis, Prunus simonii.

Its parents are: Skoroplodnaja x Desertnaja, breeders G.V. Yeremin, S.N. Zabrodina, 1993

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First Blackberry ripe 1st July 2020 – var Black Bute

This is one of the first ripening blackberries that I have found, and that truly tastes like the wild flavoured Blackberry, sweet with a slight acidic tone. Some of the new varieties have a not very nice after taste or they are quite acidic.

We started picking the first ones on 1st July 2020. They do not ripen all at once but have a nice ripening spread over the weeks. We grow a selection of varieties of Blackberry that grow up apple cordon support posts. So they grow in the open, and get blasted by the westerly rain and winds, and also the scorching heat during the summer.

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There is always something to do in an orchard. But this was a suprise.

You have been attacked by swarms of aphids. Canker and mildew have been almost controlled. But this came right out the blue. We do occasionally have Muntjac deer, but never Roe deer.

We thought there was something going on, with leaves being nibbled, and we were blaming the rabbits.        Then the nibbling got more excessive and the height of the leaves being cleared were getting higher. It had got to be Muntjac deer, so out came the trail cameras to catch the critters. A whole row of 40 different grape vines, had all the lower leaves stripped.

Then it was noticed that there were bark stripping on a few trees.

Here is the culprit, a Roe deer, there is a buck as well, but I have not managed to get a decent inage of him. If there is a pair that means there is a small on somewhere.

We have put up temporary netting, just to get a bit of height to stop them jumping over. But there are areas where we only added an extra strand of barbed wire above the existing sheep fencing, thinking that would stop them jumping. But that was a failure. So we put some rags soaked in diesel over the fencing. This still did not stop the, so we will have to continue with the additional fencing above the existing sheep fencing.

The additional fencing is only a few 50m rolls of barrier fencing, but its only temporary. Until we get to winter time to erect taller posts and fencing wire.

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