Leguminous trees as low- maintenance ornamentals
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چکیده
Leguminous plants include both herbaceous and woody types. both shrubs and tree’;. Many of thex shrubs and twzs have been used as ornament&; many others hew the potential, in appearance and adaptation. to complement existing plantings. Most leguminous plants are capable of gmwth on soils lacking nitmgcn by forming symbiotic associations with bacteria (Khirohiwn) that iniect the plant root, forming specialized structures known as ntxlules. The bacteria in these nodule\ convert atmocpheric nitrogen gas to ammonia, which is readily used by the pliux. This process is tenned nitrogen tixation. Although the plant may grow most rapidly with added fenili/er nitrogen. in many aces it will grow nearly a7 fat with little or no nitrogen supplied from the soil. When the nodule asswiations are effective. plants require no ieniliar nitrogen for growth.
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