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Plums and Damsons
Find out more about plums and damsons
fruits
09:58, 17th Aug 2010
Review of The Treehouse Diaries
A review of the book The TreeHouse Diaries by Nick Weston
books
11:17, 26th Jul 2010
Storing Herbs by Freezing
Find out how to freeze herbs to retain their flavour for months
preserving
16:10, 4th Jun 2010
Make Your Own Leafmould
Find out how to make your own leafmould to improve your soil
grow your own
15:28, 4th Jun 2010
Greenhouse Thermometer
Use a suitable max min thermometer to track temperatures in a greenhouse
greenhouse
11:22, 3rd Jun 2010
Greenhouse from Plastic Bottles
Build a greenhouse from old plastic bottles
greenhouse
10:19, 3rd Jun 2010
Make Tomato Passata
Preserve tomatoes by making delicious tomato passata
preserving
12:00, 25th May 2010
Growing Outdoor Tomato Varieties
Tomato plants which will survive outdoors in the UK
fruits
11:56, 25th May 2010
Irrigation Options
Read about the many ways of watering crops
Irrigation Options
grow your ownUnless you intend to eat cactii an well planned irrigation system is essential for the success of your crops. Many vegetables require a lot of water, and it is up to you to make up for the fickle British weather. Inside a greenhouse plants dry out and no rain falls, so it is even more important to ensure you have an adequate watering system in effect.
The simplest watering system is the good old-fashioned watering can. Very useful for targetted watering of individual plants, and plants in pots and other containers, a watering can is manually very intensive, and completely unsuited to providing the water needs of a large vegetable plot or green house.
A hose pipe in the hands of the gardener works in the same way as the watering can. What you gain in speed is lost in the amount of water wasted. Ini both the case of the watering can and the hose pipe the main problem is that the water ends up on the foliage and on the surface of the soil rather than around the roots where it is needed.
A far better alternative is Seep Hoses. These pipes with thousands of tiny holes along their lengths slowly seep water out at a rate of just a couple of litres per metre per hour. When buried a few inches below the surface of the soil very little water is wasted through evaporation, there is a reduced risk of mildew and fungus, and the roots of the crops will grow strongly downwards searching for the water.
Similar to seep hoses are drip irrigation systems. Here a thin tube lies on the surface of the soil and small adjustable drip heads are inserted into it pointing at the centre of individual plants. Water drips out of the heads and down through the soil before it has a chance to evaporate.
Within greenhouses overhead sprinkler systems and mist units are commonly used. Sprinklers make watering large numbers of plants a doddle, but if there are plants at different stages of development it is difficult to adjust the system to deliver the right amount of water to the right plants. Misters fill the atmosphere of the greenhouse or polytunnel with a fine mist of water which falls down and slowly moistens seedlings and cuttings without disturbing the soil in which they are planted.
All of the systems listed above can be managed with a range of timers and controllers so that watering can take place when you are away, or at night when it is most efficient. Modern watering controllers measure the moisture levels of the soil and water the plants accordingly.
Article Published: 16:53, 5th Apr 2006
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