SOME POINTS OF CARE OF LAWNS

Many lawns suffer from drought in a dry summer, but scorched brown areas are often caused partly by drought and partly by very hard surface soil. Too much heavy rolling may be a contributory factor here, and heavy soils will go hard more quickly than light sandy soils, but lack of aeration (spiking) is aContinue Reading

MANURES AND FERTILISERS FOR LAWNS

The main application should be made in autumn and the dressing used should contain mainly phosphates and some potash. Phosphates, e.g. bonemeal, encourage root growth. A suitable dressing for autumn is a mixture of two parts bonemeal and one part sulphate of potash (by weight) applied at 68 gms/sq.m 2 oz per square yard. ItContinue Reading

SOWING A LAWN

The ideal time to sow a lawn is from late August to mid September, but seed can be sown successfully at almost any time from April onwards, providing the soil is neither very wet nor very dry. The risk with spring and summer sowing is that there may be a period of drought immediately followingContinue Reading

PROTECTED CROPPING TECHNIQUES

CHOICE OF SITE Important points to consider in choosing a site would be: Light Although it may seen obvious, glasshouses should be erected where trees or buildings will not shade them at any time of the year. Maximum light intensity is the paramount aim. Shelter As wind speeds increase so does the heat loss. ForContinue Reading

THE IMPORTANCE OF LIGHT IN TERMS OF GLASSHOUSE MANAGEMENT AND CONSTRUCTION

Light is the most important factor in growing crops under glass, and glasshouses must be designed to give maximum light transmission at all times of the year. There are two types of light: 1. DIRECT SUNLIGHT and 2. DIFFUSED SUNLIGHT (sunlight scattered and reflected by clouds and dust). In one year, about half the lightContinue Reading

GLASSHOUSE VENTILATION

In Victorian times the environmental requirements of the plants were not well understood, and it was considered that temperature and ventilation were correct when it felt ‘buoyant’ and when it felt comfortable for the gardener. The temperature was read twice a day from a single unscreened thermometer placed in the centre of the greenhouse. InContinue Reading

GLASSHOUSE HEATING SYSTEMS EXPLAINED

To achieve some control of the growing temperatures inside the glasshouse, some form of heating can be introduced. There are many different systems for heating a glasshouse, below are a few examples found in practice. 1. Pipes containing hot water. 2. Pipes containing steam (usually only on very large glasshouse units). 3. The circulation ofContinue Reading

GLASSHOUSE HEATING

After the cost of plants and labour the next item of expenditure in growing chrysanthemums, carnations and pot plants is fuel. Owing to this it is important that the heating system is carefully chosen and that it is able to maintain the required temperatures throughout the glasshouses at crop level. It needs to be flexibleContinue Reading

THE IMPORTANCE OF GOOD GLASS HOUSE HEATING SYSTEMS

A range of fuels have been used as sources of energy to power boilers. The most common type of fuel used today is OIL. Heavy oils are the cheapest, these are called heavy because they are THICK and only flow slowly. They are also called crude oils. Because they are thick and only flow slowly,Continue Reading

THE GLASSHOUSE ENVIRONMENT

Plants in the glasshouse are totally reliant on the skills of the grower. Everything has to be provided under an artificial environment – water, nutrients, warmth, light and air. WATERING/IRRIGATION SYSTEMS Water quality is important because hard water can cause difficulties to the grower who relies on overhead irrigation systems as the higher the levelsContinue Reading

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