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Foliar feeding is a technique of feeding plants by applying liquid fertilizer directly to the leaves. [1] Plants are able to absorb essential elements through their leaves. [ 2 ] The absorption takes place through their stomata and also through their epidermis .
CalPoly Strawberry Center [5] does not operate a breeding program of its own. Instead the SC screens the varieties that come out of all of the state's breeding programs for disease resistance. [37] Driscoll's has its own private breeding program. [38] Day-neutrality is necessary to cultivation in some of the state's growing zones. [39]
There are normally adequate levels of phosphorus and potash when fields have been fertilised for other crops in preceding years. To provide more organic matter, a cover crop of wheat or rye can be planted in the year before planting the strawberries. Strawberries prefer a somewhat acidic pH from 5.5 to 6.5, so lime is usually not required. [43]
As an example, Quebec City in Canada is located in zone 4, but can rely on a significant snow cover every year, making it possible to cultivate plants normally rated for zones 5 or 6. But, in Montreal, located to the southwest in zone 5, it is sometimes difficult to cultivate plants adapted to the zone because of the unreliable snow cover.
A grafted plant consists of two parts: first rootstock, which is the lower part of the plant that comprises roots and the lowest part of the shoot; second, the branches and primary stem, which consists of the upper and main part of the shoot which gradually develops into a fully nourished plant. [1]
The seed from selected plants is bulked for the next generation. This method is used to improve the overall population by positive or negative mass selection. Mass selection is only applied to a limited degree in self-fertilizing plants and is an effective method for the improvement of landraces.