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Plants are subjected to environmental conditions; this is why they alternate between periods of growth, when the environmental conditions are favourable, and periods when their metabolic activity almost comes to a standstill when weather conditions become unfavourable. Dormancy can be defined as the temporary suspension of visible growth of any plant structure containing a meristem (tissue containing cells that divide and multiply).
In areas where there was obtained the necessary requirements of cold, for example due to an excessively mild winter season, the application of Erger allows the plant to start however the metabolic processes that lead to the interruption of dormancy. Thanks to Geapower technology, Valagro has developed GEA342, an innovative process that has allowed us to improve the product formulation, enhancing the effectiveness on activation of metabolic processes related to the plants output from dormancy. Thanks to its formulation, Erger is particularly effective in deciduous fruit trees, especially table grapes and cherry. In addition, the product is enriched with calcium and nitrogen (in the form nitric, ammonia and ureic).
Due to Erger’s features, indicated crops and instructions for use vary according to the country and, within the same country, they may vary according to the area. Cherries and table grapes are currently the crops indicated in the label for all markets. For other crops, dormancy breaking solutions can differ according to the area. Moreover, each cultivar within the same species has its own threshold.
For these reasons, it is important to always read the local label or contact Valagro’s technical support before using Erger.
The genus Actinidia is native to China, in particular to the river Yang Tze valley . In Europe the fruit was introduced by the explorer Robert Fortune in 1845, and later in Italy the berry became known as the Kiwi. Actinidia is known to be a dioecious species, comprising perennial individuals with a climbing or prostrate spreading habit, that are deciduous for the most part or are evergreen in high temperature areas. Climate impacts disproportionately on the plant development process by determining its shoot emitting capacity and intensity.
In particular, during the winter period, kiwis need a certain amount of cold weather (600-850 hours at temperatures below 7 ° C) in order to allow their gems to get over the dormancy period and to guarantee that they bud regularly. Hence climates where there are frequent falls in temperature are not conducive to steady production, whereas excessively hot climates do not meet the minimum cold weather requirement for the crop.
The cherry is a fruit tree belonging to the Rosaceae family and the Prunus species, within which three subgroups can be distinguished: the Prunus Cerasus, or sour cherry, the Prunus aviumor sweet cherry and the Prunus mahalebor flowering cherry. Native to Europe and to some cold mountainous areas of Asia Minor, the cherry does not have any particular temperature requirements and is able to resist even harsh winter temperatures hence its very widespread distribution. Autumn and early winter temperatures must allow bud dormancy to be overcome.
Most sweet cherry cultivars need about 1000 hours of cold weather. Subsequently the phase that is more vulnerable to the return of cold is the fruit set stage where temperatures below -1 ° C can damage the young fruits. During flowering temperatures should be between 15 and 25 ° C.
The apple tree belongs to the Rosaceae family , Pomoideae subfamily, and Malus genus. The Malus genus in turn comprises about thirty primary species both fruit and ornamental ones originating mainly from Asia but also from North America, and one from Europe, Malus sylvestris. Apple tree cultivation is one of the most common ones on a world level. The vast number of varieties and rootstocks that can be used allow them to adapt well to a variety of climatic conditions.
As regards temperatures, it is important for apple tree growth that they fulfil their need for cold weather (600-900 hours in the cold depending on variety). In this sense the wide range of varieties allows them to be cultivated in the warm temperate areas of Central and Southern Italy. Their resistance to cold winter weather is more than good, up to -20 / – 25 ° C.
Vitis is a genus of the Vitaceae family of shrubs, formerly called Ampelidacee. The best known species of the genus is the Vitis vinifera L., commonly known as the vine and domesticated in its sativaform. It has been cultivated since ancient times in Europe, the Middle East and the Caucasus. Other species, mostly wild ones, of American origin, are: Vitis labrusca; Vitis riparia; Vitis rupestris; Vitis berlandieri (or Vitis cinerea). Vines are woody deciduous perennials that grow in temperate climates.
In order to harmoniously fulfil their annual cycle they require an adequate winter period with temperatures of between 0 and 12 ° C. To be most effective they should be between 6-7 ° C, for a total duration of 200 hours.
Data collect made March 18 according to the BBCH scale.
Dosage: : Erger 7% + Activ Erger 16%
Timing: Application on wood 60 days before bud break
(Data collect made March 19, 60 days after the application of Erger.)
Dosage: Erger 7% + Activ Erger 16%
Timing: Application on wood 60 days before bud break (January 19)
Dosage: ERGER 3% + ACTIV ERGER 5%
Timing: % buds (full bloom and petal fall)
Dosage: ERGER 6% + ACTIV ERGER 16%
Timing: Application 45 ±5 days before the budding expected date
Dosage: Erger 5% + Activ Erger 5% (800 l/ha)
Timing: Application on bare branches 45 days before bud break (26 august)
Dosage: Erger 6% + Activ Erger 8%
Timing: Application on bare branches 45 days before bud break
Dosage: ERGER 3% + ACTIV ERGER 5%
Timing: Application when 70% chilling hours are fullfiled.
YieldOn is a biostimulant able to increase row crops productivity modulating cell metabolism, division, expansion, improving also transport of sugars and nutrients, besides lipid biosynthesis and transport.