Plum tree

Phlonzm is obtained from the root bark of apple pear cherry and plum trees It has the molecular formula C21H24O10 and yields a compound A and D glucose on hydrolysis in the pres ence of emulsin When phlorizin is treated with excess methyl iodide in the presence of potassium carbonate and then subjected to acid catalyzed hydrolysis a compound B is obtained Deduce the structure of phlorizin from this information... 

Pflaumenbaum, m. plum tree, pflaumenbiau, a. plum-blue. Pflaumenbraontwein, m. plum brandy, pflaumen-farben, -farbig, a. plum-colored. Pflaumen-gummi, n. plum gum. -sieder, m. plum distiller. 

Spring beauty Apple, pear, and plum trees and their ornamental relatives In the genera Malus, Pyrus, and Prunus are some of the first trees to blossom In spring, usually flowering In profusion. This provides a welcome treat not only for the gardener, but also for hungry flying Insects such as bees that have ventured out early In the year. 

Cultivated plums can be sweet, melting dessert fruits or tangy, firm cooking fruits, in shades from yellow to blue to nearly black. In all but the most extreme climates, there is a plum tree for every yard. Wild American plums grow in Zones 4-8, European and damson plums thrive in Zones 5-9, and Japanese plums do best in Zones 6-10. Hybrids between American and Japanese plums combine the cold hardiness of the former with the fruit quality of the latter. 

For general advice, see Apples (p.294). Most European plums will set some fruit without cross-pollination, but nearly all will yield better when cross-pollinated by another European cultivar. Japanese plums must be cross-pollinated by either a Japanese or American type. American plums also need cross-pollination for best yields. Rootstock choice can further influence your plum trees success. Ask a specialty fruit nursery for help in selecting a suitable combination of trees on appropriate rootstocks. 

Black knot is a common disease of plum trees. This fungal infection produces swollen, knobby black galls on branches. Prune out affected branches during the winter, then spray lime-sulfur as buds swell in spring and again... 

Symptoms Dark brown spots on leaves in the late spring. These drop out leaving a "shot hole" appearance. Cankers usually occur on plum tree trunks and cherry branches. Initially, amber-colored gum exudes from a slight depression. Leaves become yellow and stems die back. 

One remarkable feature of plant gums is the striking uniformity in the structure of gums isolated from different trees of the same type. For example, damson plum trees produce a gum whose properties do not vary from tree to tree. The same has been said by O Sullivan about gum arabic from acacia trees. 

Primus domesticus Latin name for the plum tree. 

Pests are controlled by actively encouraging, releasing and monitoring beneficial insects and organisms. The Fetzers plant plum trees all around the vineyards to attract the tiny parasitic wasp Anagrus that feeds on leafhoppers. Companion plants such as mustard, crimson clover and sunflowers are planted in rows alternating with permanent covers in the other rows across the entire vineyard to attract other beneficial insects. And ladybirds are introduced to feed on aphids. 

If you re in the neighborhood, don t miss Candle Cafe, a wonderful vegan restaurant (featured below). Off the beaten track is the equally ambitious Plum Tree (15011st Ave., a 212-734-1412) where the diverse menu focuses on vegan versions of Chinese specialties. 

Ceraifin is an insoluble gum exuded by cherry- and plum-trees water acts upon it as u >on bassorin. 

Apples and pears are popular choices, but cherries, plums, and damsons can all make up your orchard. What you grow depends on what fruits you want to pick for your household, and which varieties are particularly suited to your conditions and the area that you live in. Cherries, for example, do best in sheltered areas where the rainfall is light. They can make majestic trees—up to 40 ft (12 m) tall—and require plenty of space. All varieties of plum tree flower in spring, so they should be grown in a frost-free site, if possible. 

Hispidin (199) may be transformed into more elaborate metabolites on coupling with a second pyrone. Phellinus tuberculosus = Phellinus pomaceus), a fungus causing white rot on plum trees, produces hispidin together with its dehydro dimer, 3,14 -bihispidinyl (205) 414). The... 

Plum trees range from low, shrubby type to trees 30 ft (9 m) high. Its white flowers blossom in the spring before the leaves appear. Since there are many species and hundreds of varieties, plums enjoy widespread distribution in different climates and soil conditions. 

Fig. P-41. The fruiting branch of a plum tree. (Courtesy, USDA)...

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