In 2006, various species and varieties of deciduous trees and shrubs were treated with Lithovit®. The following general observations were made:
Two varieties of hornbeam (Carpinus betulus and Carpinus betulus ‘Fastiagata Monument’) and one variety of forsythia (Forsythia intermedia ‘Lynwood’) were investigated. In all three cases, there were significant average increases in leaf surface areas:
The two leaves on the left are Carpinus betulus, the two on the right Forsythia intermedia ‘Lynwood’; in each case the left-hand leaf with Lithovit ® treatment, the right-hand leaf without.
The species and varieties already mentioned were investigated. A substantial acceleration in the growth of the hornbeam (Carpinus betulus) and of the forsythia (Forsythia intermedia ‘Lynwood’) was clearly observable. Numerous first-order offshoots reaching lengths of up to 20 cm formed directly on the hornbeam’s annual shoot (length up to 75 cm). The forsythia reacted to Lithovit treatment with an increased number of new ground shoots, which ultimately reached lengths of up to 2 m.
In the case of the columnar hornbeam (Carpinus betulus ‘Fastigiata Monument’) no difference was observed in the growth performance as between the treated and the untreated plants.
In addition to the forsythia (Forsythia intermedia ‘Lynwood’), a partial wintergreen variety of privet (Ligustrum vulgare ‘Atrovirens’) and a honeysuckle (Lonicera henryi) were investigated.
In addition to the changes in leaf size and growth performance already described, it was observed in the case of the treated forsythia plants that the number of blossom buds was substantially increased as compared to the untreated plants.
Similar observations were made with regard to fruit-bearing trees and shrubs; in addition, the higher stress tolerance that is observable may lead to an improved quality of fruit.
Forsythia treated with Lithovit® (left-hand and centre pictures) produced considerably more buds than the forsythia not treated with Lithovit® (right-hand picture).
In the case of the privet and the honeysuckle, after blossoming which followed a normal pattern in all cases, a substantially increased level of fruit formation was observed in the plants treated with Lithovit®. Comparable observations were also made with dark-purple currants (Ribes atropurpureum).
On the basis of these effects, the use of Lithovit® leads to an attenuation of alternate bearing, as is also indicated by observations with olive trees (Olea europaea). Similar effects are found in fruit-bearing trees and shrubs.
Increased fruit formation in plants treated with Lithovit®: on the right privet, on the left honeysuckle.
The quantity to be applied per hectare depends on the size of the plants to be treated. Generally, the Lithovit® solution should be used in a concentration of approx. 0.5 % (1 kg Lithovit® per 200 l water). Lithovit® can be mixed with customary plant protection agents, to the extent that these are not applied in the form of an acid solution. Since not all chance occurrences that may arise in practice are predictable, users are recommended to test a trial mixture first.