动态第833页 - 绿手指 - 养花技巧、花生病了怎么办、花园打理和设计

2017年09月01日

Originating in Japan, contorted mulberry trees (Morus alba) thrive in USDA plant hardiness zones 5 through 9. This deciduous, rapidly growing plant can easily reach 20 to 30 feet high and 15 to 20 feet wide if not controlled. This tree is also known as a contorted “Unryu” mulberry.[图片]Contorted Mulberry Info The leaves of this attractive tree are a light green color and somewhat glossy and heart-shaped. They turn yellow in the fall. From mid to late summer, small yellow flowers bloom followed by fruit similar in shape and size to a blackberry. Fruit is white and ripens to a pink or light violet. Depending on variety, it can take up to ten years for a tree to start producing fruit. A distinguishing feature of this interesting tree is the contorted or twisted branches that are often used in flower arrangements, which help to give these plants the name ‘corkscrew mulberries'.[图片]Growing Contorted Unryu Mulberries Many people plant contorted mulberries as an ornamental plant in the home landscape. They bring great interest during all garden seasons and draw wildlife with their fruit and foliage. Mulberry trees do best in full to part sun and require ample water while they are establishing, although they are drought tolerant once roots are established. Some people plant varieties in large containers where their growth can be controlled. They make lovely patio plants and are popular because of their fast growth.[图片]Care of Contorted Mulberry Mulberry trees need space to spread out; 15 feet between trees is recommended. Provide supplemental water during dry conditions. If the soil conditions become too dry, fruit drop will occur. An annual feeding using a 10-10-10 fertilizer will keep the tree at its best. Pruning is only necessary to remove dead or damaged limbs and to limit crowding and control growth.[图片]Harvesting and Using Fruit Pick fruit early in the morning when it is at the peak of ripeness. It will be deep red to almost black when it is ready. Spread a sheet on the ground and gently shake the tree. The fruit will fall to the ground. Use immediately or wash, dry and freeze. This delicious berry is great for jams, pies or when eaten fresh.

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2017年09月01日

Mulberry is a deciduous, medium to large tree (20-60 feet tall) that is available in fruiting and fruitless varieties. If you currently have a mulberry that fruits, you may be well aware of the mess the fruit can create. Although the fruit is edible, there may be more of it than you can handle with an end result of a driveway that is stained purple and a car that has been bombed by bird, ahem, droppings. With such a nuisance, you may be wondering how to stop a mulberry from fruiting or mulberry fruit tree sterilization.[图片]How to Sterilize Mulberry Trees Ask any arborist and they will probably tell you that sterilizing mulberry trees is a difficult proposition, if not impossible. Expensive chemicals are required and the potential drift can affect surrounding unprotected trees and bushes. Generally, the results are inconsistent and must be timed perfectly during fruit bloom and in prime temperature conditions for any efficacy. The best course of action to stop a mulberry from fruiting and preventing the type of mess described above is to plant a male tree or fruitless variety of mulberry. If it’s too late for that and you have a female tree, thinning or pruning the tree to reduce the amount of viable fruit is certainly a thought. You will still get some fruit but between eating some and the reduction of fruit set, you may be able to stay ahead of the untidiness. Really, the only other method to try for preventing mulberry fruit is to use a chemical application. These chemicals can be applied by you or preferably by a licensed tree company.[图片]Chemically Preventing Mulberry Fruit An attempt can be made sterilizing mulberry trees with the use of such chemicals as Florel Fruit Eliminator. Florel contains ethephon, which will stop fruiting and breaks down into a natural plant hormone, ethylene. It must be applied at full bloom at just the right temperatures (60-95 F./16-32 C.) and will cause fruit to drop prior to setting. All conditions must be optimal, including a lack of disease or insect infestation, sufficient irrigation, excellent drainage and soil conditions. An issue with any of these puts the tree under stress, causing its natural production of ethylene. Too much ethylene will damage the tree, causing defoliation, stem damage and leaf scorch. For this reason, even professionals have a difficult time determining the best time for application.[图片]A professional company may also use a deflowering hormonal solution applied internally as a basal or tree trunk panacea for mulberry fruit tree sterilization. Known as Snipper, this is an acid solution that is micro-injectable and again, has a window of optimum opportunity for use. All hormonal sprays should be applied during flowering before fruit set. This timing is crucial and any derivation will result in wasted time and money.[图片]Other chemicals may be useful for mulberry sterilization. Consult with an arborist or the like for professional grade information. Professional application is likely to be costly, so keep that in mind. If all else fails, consider the removal of the tree (although that costs a pretty penny too!) and replanting of a less disorderly specimen.

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2017年09月01日

Mulberries are delicious berries akin to blackberries, which can be used in much the same way. Generally speaking, you will rarely find these delicacies at the local farmers market let alone the supermarket, as they have a short shelf life. The best way to ensure a good supply is by planting your own mulberry tree, but keep in mind these heavy bearers are prone to heavy mulberry fruit drop and can create quite a mess.[图片]Mulberry Tree Dropping Fruit Unlike other fruit bearers, mulberry trees begin bearing at an early age and quite heavily at that. Soon enough, you will have entire buckets of berries, far more than the average family can eat. Not too worry. Fruit drop in mulberry trees is very common, hence the mention of a mess. Birds will get to them but probably not before they stain the drive or sidewalk or even the soles of your shoes to be tracked indoors. Like all fruit trees, premature fruit drop of mulberries may occur. This is generally due to several factors: weather, inadequate pollination, pests or disease, and overbearing.[图片]What to do About Ripe Mulberry Fruit Drop As mentioned, ripe fruit drop in mulberry tree cultivation goes with the territory. This is the nature of this particular berry tree. You can either just “go with it” or enjoy the plethora of fruit loving birds the tree attracts, or you can lay a tarp beneath the tree during mulberry fruit drop season, which will make a tidy and rapid method for harvest. Going in forewarned, for those who have not yet planted a mulberry, choose a site that does not hang over your driveway or sidewalk because fruit drop in mulberry trees is a guarantee, not a possibility. – Of course, you can always choose to grow a fruitless mulberry tree too, or consider sterilization of the fruit tree.[图片]How to Fix Premature Fruit Drop of Mulberries For any fruiting tree, the number one reason for premature fruit drop is weather. Given that you can’t control the weather, you can take steps to protect the tree if inclement frost is forecast during the growing season. Cover the tree with sheets, burlap or the like, or string holiday lights around the tree to keep it warm. Wind can also take its toll and result in premature fruit drop. Be sure to stake young trees to prevent damage. Companion planting can boost pollination around your mulberry and lessen the chances that inadequate pollination results in premature fruit drop. Also, avoid using pest control sprays that may affect the pollinators during bloom times. Pests and diseases can be combated with a pesticide or fungicide if the infestation is serious. Keep in mind that the use of pesticides during blossoming may exacerbate premature fruit drop by killing bees and other beneficial insects.[图片]Lastly, premature fruit drop is often the result of overbearing, which is most common in young trees that have less stored nutrition than mature trees. If the tree is in competition between saving itself and fruiting, sending nutrients to produce berries or survive itself, obviously the tree wins. Sometimes trees prematurely drop fruit due to the sheer weight of it on their branches. It is of paramount importance to thin the young fruit before the tree drops it. Use small pruner and leave 4-6 inches between fruit clusters. You can also pinch off blossoms before the petals drop.[图片]Follow all the above and barring unforeseen circumstances you should be enjoying an antioxidant, protein packed smoothie for, well, the rest of the year given the proliferation of berries you’re bound to harvest!

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2017年09月01日

Mulberry trees (Morus spp.) enjoyed popularity in years past as ornamental shade trees as well as for their copious edible fruit, which can be eaten raw or made into luscious preserves, pies and wine. Interested in learning about how to grow mulberry trees? Read out all about growing mulberry fruit trees and mulberry tree care.[图片]Growing Mulberry Fruit Trees While people love mulberry fruit, birds also love the berries and the tree is a beacon that attracts dozens of, ahem, messy guests. The tree also has an unwelcome habit of becoming invasive. Unfortunately, this brought the growing of mulberry fruit trees to a screeching halt in any but the most rural areas. Mulberry trees do have redeeming qualities, though, and one of the most outstanding is the minimal care they require. Before we learn about how to care for mulberry trees, here’s a brief synopsis of the three types of mulberry trees most commonly grown.[图片]Black mulberry – The most flavorful berries come from the black mulberry (Morus nigra). These trees are native to western Asia and are only adaptable to USDA zone 6 and warmer. Red mulberry – Hardier than black mulberries, red mulberries (Morus rubra) are native to North America where they thrive in deep rich soils found along bottomlands and streams. White mulberry – White mulberries (Morus alba tatarica) were imported from China, introduced into colonial America for silkworm production. White mulberries have since naturalized and hybridized with the native red mulberry.[图片]How to Grow Mulberry Trees Mulberry trees bear small, unremarkable blooms that become plentiful fruits that look much akin to a slender blackberry. The berries ripen in stages and drop from the tree as they mature. The trees are hardy to USDA zones 4/5 to 8 depending upon the variety. They prefer full sun and rich soil but will tolerate part shade and a variety of soils. They are easy to transplant, salt tolerant and perfect for erosion control, not to mention the delicious berries. Some cultivars are wind-resistant and make wonderful windbreaks.[图片]Deciduous trees, all three species attain various sizes. White mulberry can grow to 80 feet, red mulberry around 70 feet and the smaller black mulberry may get to 30 feet in height. Black mulberries can live for hundreds of years, while red mulberry maxes out at 75 years of age. Mulberry trees should be planted in full sun with no less than 15 feet between trees, ideally in warm, well-draining soil such as deep loam. Don’t plant them near a sidewalk unless you don’t mind the staining or the potential tracking in of squashed berries (of course, if this is a problem for you, there is a fruitless mulberry variety too!). Once the tree has established, there is very little additional mulberry tree care required.[图片]How to Care for a Mulberry Tree There really isn’t too much to worry about with this hardy specimen. The trees are fairly drought tolerant but will benefit from some irrigation during the dry season. Mulberries do well without additional fertilization, but a 10-10-10 application, once per year will keep them healthy. Mulberries are even primarily free from most pests and disease.[图片]Pruning Mulberry Trees Prune young trees into a tidy form by developing a set of main branches. Prune lateral branches to 6 leaves in July to facilitate the growth of spurs near the main limbs. Do not prune heavily since mulberries are prone to bleeding at the cuts. Avoid cuts of more than 2 inches, which will not heal. If you prune when the tree is in its dormancy, bleeding is less severe.[图片]Thereafter, only judicious pruning of mulberry trees is necessary, really only to remove dead or overcrowded branches.

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2017年09月01日

Mulberry (Morus spp.) trees are fast-growing, deciduous trees known for their variable leaf shapes, their delicious berries, and the terrible stains those berries can make if they hit the sidewalk rather than someone’s mouth. Some have red fruit while others produce tasty purple or white fruit. A fruitless cultivar exists for those not interested in those yummy, messy berries. Mulberry trees can reach 30’-70’ depending on the species. They are fantastic shade trees. Due to their quick growth, pruning mulberry trees is often necessary.[图片]Mulberry Trimming Proper mulberry tree pruning techniques depend on your landscape goals. If you want to create a shady spot that provides food and shelter for birds as well as biomass for your compost bin, only cut out small, dead, diseased, crossed-over and oddly oriented branches. In this case, mulberry trimming can be done every two to three years. If your primary goal is fruit production for human consumption, then mulberry trimming should be done every year to control size and to keep most of the fruit within easy reach. Note that mulberries bloom and fruit on the previous year’s growth, so extensive pruning will reduce fruit production. Pruning mulberry trees that are too large for their space is often executed via a technique called pollarding. With pollarding, all the smaller branches are removed annually to a selected area on larger scaffold branches. I don’t like to recommend pollarding because it is mostly done wrong. When the pollard form of mulberry tree pruning is done incorrectly, it can leave a tree that is unsafe, ugly and prone to disease.[图片]How to Prune a Mulberry Tree If you are wondering how to prune a mulberry tree, start with sharp, clean tools. Do not struggle while cutting through a branch. If this happens, your tool is too small. Use a hand pruner for cuts under 6” and loppers for cuts 1” to 2”. You can also use a good saw for cuts 1” and larger. Try not to cut branches larger than 2” in diameter. Mulberry trimming should not be done on large branches unless you accept the fact that large wounds don’t heal very quickly and leave open the door for pests and disease and heart rot. Pruning trees in pollard form should be started when the tree is quite young and the scaffold branches have grown to the height you wish for in the canopy. Always cut the smaller branches back to their base on the scaffold. A round callused knob will form over the years. Always cut to the knob but not into it. Do not leave a stub that is more than ½” at the knob. Do some research on pollarding before you cut the tree. If you inherit a large tree that was pollarded in the past but not maintained properly over the years, hire a certified arborist to get it back into shape.[图片]When to Prune Mulberries Mulberry tree pruning is easiest when the tree is dormant. You can see the structure of the tree without it being obscured by leaves. Don’t prune when the weather is very cold. When the temperature is under 50 F. (10 C.), it is harder for the tree to seal off its wounds. A good time for mulberry trimming is in spring prior to the buds turning green.

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2017年09月01日

The mulberry bush is not just a folkloric song lyric. You won’t find these sweet, tangy berries in the supermarket due to their short shelf life, but they are easy to grow, abundant, and fast growing, which makes them perfect for containers. If you’re interested in growing mulberries in containers, keep reading to find out how to grow a mulberry tree in a pot and other dwarf mulberry tree facts.[图片]Dwarf Mulberry Tree Facts Mulberries are suited to USDA zones 5-10. In the ground, mulberries grow into a large bush, but a container grown mulberry tree’s size can be kept smaller (2-6 feet tall) by pruning just after fruiting. Pruning a mulberry also encourages the plant to produce berries again, resulting in several crops throughout the growing season. Mulberries may be female, male or bisexual. If you are growing from seed, you are more likely to get either a male or female. Commercially sold mulberries are bisexual or self-pollinating. The plant blooms in the early spring and is quickly followed by a dense crop of large juicy berries, about the size of a big blackberry. This berry is so prolific; it even yields well in its first year and may produce several crops.[图片]The children’s song ‘Pop goes the weasel’ isn’t the mulberry’s only claim to fame. Mulberry foliage is the silkworm’s favorite food and has been cultivated for centuries specifically for this purpose. The practice of breeding silkworms for their raw silk production is called ‘sericulture’ and has been around for over 5,000 years in China. Mulberry trees also have long pliable branches perfect for weaving into baskets, fences, and screens. All these interesting uses aside, the number one reason for growing a mulberry is for its fruit. The luscious berries can be eaten fresh, dried, frozen or made into pies, jams, and frozen desserts. They can also be turned into wine or the juice can be used as a dye. Intrigued? So, how do you grow a mulberry tree in a pot and is there any special care needed of mulberries in pots?[图片]Container Grown Mulberry Trees There isn’t much in the way of special care for mulberries in pots. They are extremely forgiving plants. Full sun exposure will make your mulberry happiest. Interestingly, the tree will do quite well with wet roots, but it can also be drought tolerant once established. They are also frost tolerant, although it is best to mulch around the plants to protect the roots from freezing and thawing. Mulberries are tolerant of a variety of soils but when potting them, it’s best to use a good quality potting medium amended with some nutrient rich compost. Feed the tree at regular intervals during the growing season with a balanced fertilizer, liquid seaweed or water with compost tea. Allow the surface of the soil to dry between waterings and then saturate the soil.[图片]You can prune ever-bearing varieties at any time to retard their growth. Otherwise, cut back leggy plants in the late winter or early spring. Berries are formed on new growth. Mulberries have little to no issue with foliage or root diseases. They are, however, susceptible to spider mites, whiteflies and mealybugs, but these are usually fairly easy to manage.

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2017年09月01日

You will probably not find mulberries at the grocers (maybe at the farmers market) because of their short shelf life. But, if you live in USDA zones 5-9, you can enjoy your very own mulberry tree harvest. The question is when to pick mulberries? This leads to a follow up question of how to pick mulberries? Read on to find the answers.[图片]Mulberry Tree Harvest Mulberry trees attain a height of between 20-30 feet. They make lovely, fast-growing landscape trees with the added bonus of producing delicious berries and leaves suitable for steeping as tea. The berries are really the stand out though. They look much like elongated blackberries and are sinfully sweet. Starting a mulberry tree from seed can be difficult. The seed needs 90 days of cold, moist stratification and even then has a low germination rate. If you dislike failure, it might be advisable to purchase a young tree, especially if you want fruit quicker for harvesting. Mulberry trees like full sun in moist, slightly acidic soil (pH of about 6.0). They need to be planted deep enough to support their extensive root system.[图片]When to Pick Mulberries A little patience is required before you can begin harvesting the mulberry trees. It will take about three years before you can sample the fruits of your labor and mulberry harvesting can commence. Mulberry harvesting season begins in mid-June through August. You will be looking for fruit that is large, black and sweet, so yes, a taste test is in order. If the fruit is ripe, then what?[图片]How to Pick Mulberries The time for harvesting the mulberry trees has arrived. There are two methods for picking the fruit. You can hand pick it, which depending upon your disposition can be tedious or relaxing, or you can use an old sheet or tarp to hasten the process. Spread the tarp under the mulberry tree and then shake the branches. Gather up all the fallen berries. Take care not to layer the berries too deep in the container or you will end up with a lot of crushed berries.[图片]If you can keep your hands off them, mulberries will keep in the refrigerator, unwashed in a covered container for several days. Or freeze the berries for later use. Wash them and gently pat them dry, then pack them in freezer bags. Frozen berries will store for several months.

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2017年09月01日

The weeping mulberry is also known by its botanical name of Morus alba. At one time it was used to feed valuable silkworms, which love to munch on mulberry leaves, but that is no longer the case. So what is a weeping mulberry? The following article contains information on planting and growing a weeping mulberry.[图片]What is a Weeping Mulberry? Native to China, the mulberrywas introduced to provide food for the thriving silkworm trade. Because the tree is unfussy and will tolerate almost any soil and even a fair amount of neglect, it soon became naturalized and considered to be more of a weed. Today’s new cultivars, from the weeping varieties to hybrid dwarf varieties to fruitless types have brought the tree back into vogue again. This fast-growing tree (up to 10 feet a season) is hardy in USDA zones 5-8. The weeping mulberry has a unique twisted shape and multiple weeping branches and is very ornamental. Some types will attain a height of 15 feet and a spread of between 8-15 feet. The leaves of the tree are undivided or lobed, dark green and 2-7 inches long.[图片]About Growing Weeping Mulberry Trees There are two major types to choose from when planting a weeping mulberry tree. A male tree, Morus alba ‘Chaparral,’ has shiny green leaves and attains a height of between 10-15 feet. A female tree, M. alba ‘Pendula,’ bears fruit and gets to about 6-8 feet in height.[图片]Weeping Mulberry Fruit With regards to mulberry fruit, are weeping mulberry berries edible? Yes, indeed. Weeping mulberry fruit is sweet and succulent. They can be made into desserts, jams, or jellies, although it is so addictive eaten fresh it might be hard to pick enough for those goodies before eating them all. Berries can be black, yet not fully ripe. Wait until they are at full size and then give them a few more days when they will be at peak sweetness. To pick the fruit, surround the tree with a tarp or old sheet and then knock the branches or trunk of the tree. This should be sufficient to loosen any ripe berries, which can then be collected from the tarp. Don’t delay picking the berries or the birds will beat you to it.[图片]Weeping Mulberry Tree Care As mentioned, weeping mulberries are tolerant of the conditions they are growing in. They should be planted in well-drained soil in full to partial sun. For the first few years, it will need to be on a regular watering schedule but, once established, the tree becomes fairly drought tolerant. If you wish to retard the vigorous growth of a weeping mulberry, cut its summer growth back by half in July. This will keep the tree a shorter height but encourage it to bush out, which also makes it easier to pick berries.[图片]Be aware that the tree can be extremely messy due to dropping fruit. Mulberries also have strong surface roots that, when planted near a sidewalk or drive, may undermine the surface. Lawn mowing can also be a challenge due to the surface roots. Weeping mulberries have little to no pest or disease issues so continued weeping mulberry tree care is minimal.

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2017年09月01日

The problem with growing mulberry trees is the berries. They create a mess on the ground beneath the trees and stain everything they come in contact with. In addition, the birds that eat the berries disburse the seeds, and the species has become invasive in the wild. Fruitless mulberry trees (Morus alba ‘Fruitless’) are just as appealing as the fruited varieties, but without the mess or the invasive potential. So what is a fruitless mulberry tree? A fruitless mulberry tree is an excellent choice for a medium to large shade tree in home landscapes. It grows 20 to 60 feet tall with a dense canopy as much as 45 feet wide. This handsome tree has dark green foliage in summer which turns yellow before it drops in fall.[图片]How to Grow a Fruitless Mulberry Tree When growing fruitless mulberry trees, you should plant the trees in full sun or partial shade. You’ll also want to plant the trees at least 6 feet from sidewalks, driveways and foundations because their strong roots can lift and crack cement and pavement. The trees tolerate almost any type of soil, but do best in a well-drained, loamy soil. Trees benefit from staking the first year. Young trees tend to be top-heavy and the trunks snap easily in strong winds. If the stake is left in place more than a year, it may do more harm than good.[图片]Fruitless Mulberry Care Growing fruitless mulberry trees is easy because the trees require very little care. Once established it withstands both drought and extended flooding, but it will grow faster if watered during dry spells. The tree doesn’t need fertilizer until its second year. A 2-inch layer of compost in spring is ideal. Spread the compost under the canopy and a few feet beyond it. If you want to use a granular fertilizer instead, choose one with a ratio of about 3:1:1.[图片]Pruning Fruitless Mulberry Pruning fruitless mulberry trees is another factor of fruitless mulberry care. Mature trees seldom need pruning, but you may need to shape young trees and remove or shorten branches that droop too close to the ground. The best time to prune mulberries is in winter after the leaves have dropped. Remove broken or diseased branches any time of year.

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2017年09月01日

Silk tree mimosa (Albizia julibrissin) growing can be a rewarding treat once the silky blooms and fringe-like foliage grace the landscape. So what is a silk tree? Keep reading to learn more.[图片]What is a Silk Tree? Mimosa trees are a member of the Fabaceae family and are a popular ornamental tree in the home landscape. Also known as silk trees and Albizia silk trees, these beauties have a lovely feathery habit with wispy pink to rose aromatic flowers. Ideal for USDA planting zones 6 through 9, this tree provides light shade and adds a lovely burst of color amongst other deciduous or evergreen trees, or when used as a specimen. The fringed foliage ranges from bright green to chocolate brown, depending on the variety.[图片]How to Grow a Silk Tree Silk tree mimosa growing is really quite easy. Albizia silk trees need a little space to accommodate their arching habit, so be sure to plan for this accordingly when planting. Roots like to spread out as well, so it is wise not to plant this tree close to a sidewalk or other cement patio where it could cause disruption. Some people also prefer to locate mimosa trees away from gathering areas because flower and pod shed can be kind of messy. Mature trees open into a lovely “V” shape and reach about 30 feet high. Mimosa thrives in full sun and is not picky about soil type. The tree is easy to start from a seed pod or a young tree. Anyone who has a mimosa would be happy to share seed pods with you.[图片]Silk Tree Care Silk trees need just enough water to keep moist; they will even tolerate a short period of drought. A 2-inch layer of mulch will help to protect the tree and keep the soil moist. If you are getting regular rainfall, it is not necessary to water your tree. Fertilize your tree with compost or organic fertilizer in early spring before the leaves appear. Prune dead branches to keep the tree healthy. Keep an eye out for webworms, which seem to be attracted to this tree. In some regions, canker is a problem. If your tree develops canker, it is necessary to remove infected branches.[图片]Container Growing Mimosa also makes an excellent container plant. Provide a large container with plenty of loamy soil and excellent drainage. Smaller chocolate mimosa trees make excellent container specimens. Throw in some trailing plants for a beautiful patio or deck display. Water when dry and trim dead branches as needed.

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