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Seeds were planted in the greenhouse in naturally highly infested soil and symptomless plants that survived in naturally infested soil were the source for F1 seeds of resistant germ plasm. Further selection tests to improve resistance were conducted up to additional generations in infested soil in the greenhouse.
Basil seeds are relatively inexpensive to produce, and they can be grown in a variety of climates. The main challenge in basil seed production is the need for a consistent supply of water. Basil seeds are sensitive to drought, and they will not germinate if the soil is too dry. The average yield of basil seeds is about 1,000 pounds per acre.
A honey bee collecting nectar from an apricot flower.. The nectar resource in a given area depends on the kinds of flowering plants present and their blooming periods. Which kinds grow in an area depends on soil texture, soil pH, soil drainage, daily maximum and minimum temperatures, precipitation, extreme minimum winter temperature, and growing degre
Ocimum americanum, known as American basil, lime basil, [2] or hoary basil, [3] is a species of annual herb in the family Lamiaceae. Despite the misleading name, it is native to Africa, the Indian Subcontinent, China, and Southeast Asia. The species is naturalized in Queensland, Christmas Island, and parts of tropical America.
Ocimum gratissimum, also known as clove basil, African basil, [1] and in Hawaii as wild basil, [2] is a species of basil. It is native to Africa , Madagascar , southern Asia , and the Bismarck Archipelago , and naturalized in Polynesia , Hawaii, Mexico , Panama , West Indies , Brazil , and Bolivia .
Plant–soil feedback is a process where plants alter the biotic and abiotic qualities of soil they grow in, which then alters the ability of plants to grow in that soil in the future. [1] [2] Negative plant–soil feedback occurs when plants are less able to grow in soil that was previously occupied by a member of the same species, and ...
Partially shelled popcorn seed saved for planting. In agriculture and gardening, seed saving (sometimes known as brown bagging) [1] is the practice of saving seeds or other reproductive material (e.g. tubers, scions, cuttings) from vegetables, grain, herbs, and flowers for use from year to year for annuals and nuts, tree fruits, and berries for perennials and trees. [2]
Plant collecting is the acquisition of plant specimens for the purposes of research, cultivation, or as a hobby. Plant specimens may be kept alive, but are more commonly dried and pressed to preserve the quality of the specimen. Plant collecting is an ancient practice with records of a Chinese botanist collecting roses over 5000 years ago. [1]