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Provide a clear and concise response that summarizes the key points and information presented in the text. 
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Shamrock, the traditional Irish symbol, which according to legend was coined by NAME_1 for the Holy Trinity, is commonly associated with clover, although alternatively sometimes with the various species within the genus Oxalis, which are also trifoliate. Clovers occasionally have four leaflets, instead of the usual three. These four-leaf clovers, like other rarities, are considered lucky. Clovers can also have five, six, or more leaflets, but these are rarer still. The record for most leaflets is 56, set on 10 May 2009. This beat the "21-leaf clover",Clover Sets Record. Neatorama. Retrieved on 2008-12-07 from http://www.neatorama.com/2008/06/11/21-leaf-clover-sets-record 21-leaf. a record set in June 2008 by the same discoverer, who had also held the prior Guinness World Record of 18. A common idiom is "to be (or to live) in clover", meaning to live a carefree life of ease, comfort, or prosperity. The cloverleaf interchange is named for the resemblance to the leaflets of a (four-leaf) clover when viewed from the air. File:4-leaf clover.JPG|Four-leaf white clover (Trifolium repens)

Several species of clover are extensively cultivated as fodder plants. The most widely cultivated clovers are white clover, Trifolium repens, and red clover, Trifolium pratense. Clover, either sown alone or in mixture with ryegrass, has for a long time formed a staple crop for silaging, for several reasons: it grows freely, shooting up again after repeated mowings; it produces an abundant crop; it is palatable to and nutritious for livestock; it fixes nitrogen, reducing the need for synthetic fertilizers; it grows in a great range of soils and climates; and it is appropriate for either pasturage or green composting. In many areas, particularly on acidic soil, clover is short-lived because of a combination of insect pests, diseases and nutrient balance; this is known as "clover sickness". When crop rotations are managed so that clover does not recur at intervals shorter than eight years, it grows with much of its pristine vigor. Clovers are most efficiently pollinated by bumblebees, which have declined as a result of agricultural intensification.Bumbles make beeline for gardens, study suggests Retrieved 27 November 2010. Honeybees can also pollinate clo Provide your reponse without using the word area.
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