FORMING OF ROLLS AND WRAPPING SILAGE UP
At manufacturing the silage in rolls creating anaerobic conditions in the roll after wrapping up which they are supporting is a purpose simple to achieve and at the same time essential oneself for fattening up. Two factors are contributing to it: the structure and the density of the roll and the effectiveness impervious airs of the barrier.
In the modern farming practice rolls are being wrapped up with many layers of the foil of material in the destination of getting long-lasting, impervious airs of the barrier. At pickling a sustenance of green fodder is being kept and a threat of decaying which has often appeared in case of applied earlier sacks is reducing.
Foils are being tightened with the con man on the wire-wrap tool of rolls, and then is wrapping up her rolls. Memory of plastics - property thanks to which the foil is returning to primitive dimensions - causes the contraction of the foil around the roll which is creating very much tight and reliable barrier. High quality layers of the foil more easily are sticking together with themselves what the airtightness of the barrier is increasing and a process of wrapping rolls up is facilitating.
FOIL TO THE SILAGE
The foil to the silage should fulfil three essential conditions: it must have good mechanical properties, well to adjoin (to be sticky) and to contain stabilizers protecting before damaging by the sunlight - mainly radiating ultra purple. A best quality of the foil is essential what is being combined with stresses appearing while wrapping the transport up and storing, thanks to what:
- the process of wrapping up is proceeding without problems - less breaks because of the tear, the heterogeneous tension or blocking devices
- a density of the roll continues and prevents damage - for a long stretch in a wide range of climatic conditions and at typical operations with rolls
- the sunlight is being reflected - it prevents a rise of temperature which could support the development of undesirable micro-organisms and increase the permeation of gasses through the stretchy foil
- the foil constitutes the barrier for water and oxygen - is keeping the right concentration of the gas carbon dioxide inside the roll which is acting as preservative
IS THE COLOUR OF THE FOIL SIGNIFICANT?
It was showed in research, that foils about the light colour - white or green - are reflecting more warmth in the comparison from foil black, what provide the best possible conditions for the fermentation thanks to. Exaggerated heating is leading for loss of the sustenance and potentially the spoilage SILAGE green fodder.
WHAT ARE APPROPRIATE CONDITIONS, IN WHICH SHOULD BE WRAPED ROLLS UP Rolls should be wrapped up in dry conditions. At the weather without falls the foil is keeping glutinous properties, moreover ensilaged green fodder has the highest possible dry matter content. Of the humid silage more juices are freeing, what also negatively influences the air tightness of layers.
HOW MANY LAYERS OF THE FOIL?
Fundamentally for due wrapping up the roll with the silage should be applied at least 4 layers of the applied traditionally stretchy foil. Producing the roll about the high density and dry matter contents from very easily of digestible green fodder (over 200 kg of a dry matter to the roll) applying 6 layers of the foil is justifying. The height about 25 kg of a dry matter to the roll is covering two additional layers of the foil expenses, since a number of rolls which it is necessary to form, is reducing to wrap up, to transport and to store.
Built recently by the Welsh Institute of Grassy Areas and environment tests (IGER) the research is showing that increasing the number of strata of the foil, with which rolls are being wrapped up with green fodder, is reducing the penetrability of air, loss of a dry matter of the silage and is reducing the height of the mould what provides the high performance for the fermentation. It means that increasing the number of losses of the foil lets the quality get more nutritious silage intended to fatten up and better for her.
TIGHTENING THE FOIL
Tightening the foil allows to get a tight connection of layers, however exaggerated tightening causes loss of the elasticity of the foil what for its the effectiveness is making lower. Measuring reducing the width is a good solution of foil after tightening. Although is making advances so that after stretching the width of the foil is 70 up to the 80% of primitive width, they usually assume that it is possible to tighten the foil 750 mm wide so that the width is an about 600 mm. Such a value is being get, if the foil lightly is tightened, and then is wrapping rolls up.
INDICATORS CONCERNING THE FORMING AND WRAPPING ROLLS UP
- it should be aspired to producing rolls about the high density and the appropriate shape. Thanks to that rolls will be heavier and their number will reduce to the hectare, and therefore costs of the forming and wrapping rolls up will reduce
- to grind green fodder down in order to get the greater condensation and the better availability of the sugar, thanks to that the fermentation is coming quickly - ultimately 200 - 220 kg of a dry matter on m3
- to apply silage additions according to recommendations of the producer
- to set the highest density of the roll on the press
- as much as possible to wrap rolls up (within at most 12 hours in the place of storage) applying the high quality foil with the preliminary tension 55-70 %. One should wrap rolls up in dry conditions
- regularly to clean rollers so that on them remains don't gather
- to apply the minimum of 6 layers to the purpose of the better security against damage and the safeguard against the access of air
- in order heating the surface of the roll will reduce and to lower the risk of the corruption, best to apply the green or white foil
- wrapping up should be conducted according to the instruction for use of the wire-wrap tool and recommendations of producer of the foil
- wire-wrap tools should be used with whip-round platforms on which the roll is falling gently, in order to minimize damaging the foil at knocking off
- all operations with rolls should be conducted very cautiously to limit, in order not to damage the foil what could supply for spoiling the silage
- in case of wet SILAGE ( <25% dry matter content) carefully put down rolls on ground – one layer; if dry matter content is over 35% it is possible to arrange that in three layers
- to cover rolls from above in order to protect before damaging by birds and rodents.