The material about grades of plum rather steady against a disease of a sharka of plum is published.
According to the Polish expert in Elzhbeta Rozpara’s plum, absolutely usyotoychivy (immune) to a sharka of grades of plum, unfortunately, isn’t present. There are rather steady, that is tolerant, and ustoyyochivy grades. Them treat Anna Shpet, Stenley, Renyoklod Altan, Renklod Ulensa. In general all renklody schitayutsya steady against a sharka. However, about stability of many sortov plums of domestic selection to a sharka aren’t present information. According to gardening UNII, it is surprised also abrikos and a cherry. So search new highly productive sortov, steady against this disease, and immediate replacement of the grades unstable to it with them – a pervosteyopenny task of scientific-sortovedov research establishments and amateur gardeners. After all this disease doesn’t give in to treatment by pesticides. Only two variyoant of an exit from this situation are possible. The first – improvement of neusyotoychivy grades by thermo – and chemotherapy in culture of "In vitro". Whether but for a long time such protection will suffice? Before the revitalized trees will start to fructify, they again can zarazitsya a virus. The plant louse who more than other wreckers strikes plam trees transfers a sharka. That is why unichtoyozheny plant louses – the major task slivovoda.
The second option (more real) – landing of grades of plum steady against a sharka.
New domestic grades of plum quite in detail opisany on pages of "Truck farmer" for last years. Today opyoredelenny interest for us is represented by new grades of plum of foreign selection. They steady against a sharka, with high economic qualities. I will tell only about some of them.
Herman
Swedish grade of plum. The Tsar and Ruth Geshtert is received by a way of crossing of grades. A tree srednerosly, with spherical kroyony, the dark green slightly goffered leaves.
Once having seen plum leaves Herman, never you will confuse it with any other grade. Fructification enters since vtoyory year, blossoms in early terms. Grade partially samoplodny. Fructifies regularly and plentifully. Fruits ripen in the second half of July. This year tasted on July 20. Sozrevayoniye can be and earlier. This year it zapozdalo in connection with weather conditions.
Fruits of average size (weight – 30 g), shirokoovalny, a fruit stem short, the thin skin light-violet, is covered with a pruinovy raid. The pulp badly lags behind a stone, very tasty. The grade is steady against a sharka.
Elena
The German grade, is received by a way of pollination of the Hungarian italyanyosky a grade Stenlya. A tree silnorosly, with shirokopiramiyodalny krone. Very fruitful plum, enters a plodonoyosheniye from 3-4th year after landing, very late term of maturing (the end of September). Fruits in weight to 30 g, udlinenyony, divided by a deep seam on two rough parts, temyono-dark blue color, the pulp of flavovirent color, to taste niskolko doesn’t differ from the Hungarian ordinary. Along with an usyotoychivost to a sharka, the grade Elena isn’t subject also to other zayobolevaniye, practically isn’t surprised gnilyami.
Chachaksky nayboliya
Grade of the Yugoslavian selection. Tree silnorosly. Ployodonosheniya enters for the 2-3rd year. Fruits ripen at the end of August, quite large (weight – 60 g), garnet color, are covered blue pruinovy for a short while. Pulp of green color, very tasty, with easily separating stone. The grade plentifully fructifies. In Ukraine on Pomologichesyoka of station of Vavilov UAAN by K.Yu.Mostolovitsa for the first time was studied.
Amers (hybrid 589007)
The new grade, is received in the USA by a way of crossing of grades the Standard and Stenley. Tree srednerosly. It, perhaps, nayoiboly a skoroplodny and intensively increasing crop a grade. The first crop – since the second year after landing. The grade samoplodny, but fructifies at a cross opyyoleniye better.
Fruits in mass of 50-60 g, oval form. Thin skin claret-violet. The pulp yellow, dessert taste, a stone very easily separates from pulp. Stability to a sharka and excellent economic qualities made this grade today the most popular in Poland.
The German grade, very silnorosly, is received skreshchivayoniy grades Otenauyer and Stenley. The plodonosheyoniya from 2-3rd year after landing enters a time. Fructifies plentifully and reyogulyarno. Grade samoplodny, fruits in mass of 40 – 50 g, udlinenyony form. A thin skin dark blue with blue for a short while. The pulp quite firm and juicy, tasty, a stone separates from pulp. Yoyo’s fruits ripen at the beginning of September and can dolgo hang on a tree, without being showered and without rotting. As well as all above described, is steady against a sharka.
Except these, in a NENTs collection there are a lot of other interesting grades steady against a sharka: Ganita, Katinka, Stuttgart, Zhelyotaya Afasky, Silvia, Yubileum, etc.
(On Ogorodnik magazine materials).