The growth of cover crops makes use of seasonal rainfall for production of organic matter to be incorporated into the soil. The culture of intercrops such as beans, tomatoes, or melons among immature orange trees is common in some places. When the budded tops are one to two years old, the trees are large enough to plant in the orchard. After about 12–16 months in the nursery, the trees are usually large enough to bud. The seeds are sown in well-prepared soil in a lath house after about 12 months’ growth there, the seedlings are removed to a nursery. The orange trees are usually budded on stocks grown from the seed of selected trees. Orange orchards are generally planted in relatively deep soil where drainage is good. The trees tolerate a wide range of soil conditions, from extremely sandy soils to rather heavy clay loams they grow especially well in intermediate types of soil. In the coldest cultivation areas, the orchards may be heated with smudge pots or smokeless natural-gas burners. The trees are semidormant at that season, and temperatures just below freezing will not harm trees or fruit unless frost occurs early, before the trees have finished their annual growth. Oranges thrive best where the trees are chilled somewhat by occasional light frosts in winter. SpaceNext50 Britannica presents SpaceNext50, From the race to the Moon to space stewardship, we explore a wide range of subjects that feed our curiosity about space!.Learn about the major environmental problems facing our planet and what can be done about them! Saving Earth Britannica Presents Earth’s To-Do List for the 21st Century.Britannica Beyond We’ve created a new place where questions are at the center of learning.100 Women Britannica celebrates the centennial of the Nineteenth Amendment, highlighting suffragists and history-making politicians.COVID-19 Portal While this global health crisis continues to evolve, it can be useful to look to past pandemics to better understand how to respond today.Student Portal Britannica is the ultimate student resource for key school subjects like history, government, literature, and more.Demystified Videos In Demystified, Britannica has all the answers to your burning questions.This Time in History In these videos, find out what happened this month (or any month!) in history.#WTFact Videos In #WTFact Britannica shares some of the most bizarre facts we can find.Britannica Classics Check out these retro videos from Encyclopedia Britannica’s archives.Britannica Explains In these videos, Britannica explains a variety of topics and answers frequently asked questions.
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