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rotation of crops
rotation of crops agricultural practice of varying the crops on a piece of land in a planned series, to save or increase the mineral or organic content of the soil, to increase crop yields, and to eradicate weeds, insects, and plant diseases. In a rotation, it is often desirable to alternate a... Read more |
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Crops
Crops Crops are plants or animals or their products cultivated (grown, tended, and harvested) by humans as a source of food, materials, or energy. Humans are rather particular in their choice of crops. Though they select a wide range of useful species of plants and animals to raise, there are vast... Read more |
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orchard
orchard generally an area on which fruit or nut trees are planted and cultivated. The words grove and plantation are often used when the fruits are tropical, e.g., a "citrus grove" or a "banana plantation." The distinction among the three terms arises from common usage rather than... Read more |
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Crop rotation
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game cropping
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Eliza Lucas Pinckney
Eliza Pinckney American business pioneer Eliza Pinckney (1722–1793) single-handedly launched the indigo industry in pre-Revolutionary era South Carolina. Determined to make the highly prized tropical crop flourish in the Carolina soil, Pinckney carried out several experimental plantings... Read more |
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standing crop
standing crop The total amount of living material in a specified population at a particular time, expressed as biomass (standing biomass) or its equivalent in terms of energy. The standing crop may vary at different times of the year; for example, in a population of deciduous trees between summer... Read more |
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Cash Crop
CASH CROP A cash crop is any crop that a farmer sells for money, rather than holding it for use by his own family, or to feed livestock, or for bartering with others. For example if a farmer grows corn, wheat and soybeans, but sells only wheat on the open market for cash while feeding his corn to... Read more |
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Crop Improvement
CROP IMPROVEMENT CROP IMPROVEMENT. Crop improvement refers to the genetic alteration of plants to satisfy human needs. In prehistory, human forebears in various parts of the world brought into cultivation a few hundred species from the hundreds of thousands available. In the process they... Read more |
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Prolactin
prolactin (lactogenic hormone; luteotrophic hormone; luteotrophin) A hormone produced by the anterior pituitary gland. In mammals it stimulates the mammary glands to secrete milk (see lactation) and the corpus luteum of the ovary to secrete the hormone progesterone. Secretion of prolactin is... Read more |
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