crop

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crop

(krŏp)

Zoology

a. A pouchlike enlargement of a bird's gullet in which food is partially digested or stored for regurgitation to nestlings.

b. A similar enlargement in the digestive tract of annelids and insects.

crop

in vertebrates, particularly some birds, an expanded part of the oesophagus where food is stored.
in invertebrates, an expansion of the anterior part of the gut system where food is either digested or stored.
the agricultural or commercial fishery yield.
in ecological terms, the difference between gross annual production and the net production - i.e. the material eaten by predators (or herbivores where the food is a vegetable), including that taken by man, and that consumed by organisms responsible for decay. See STANDING CROP.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

References in periodicals archive ?

fertilizers used for feed crop production, it is estimated that this

Methane digesters and biogas recovery - masking the environmental consequences of industrial concentrated livestock production

Livestock's presence in vast tracts of land and its demand for feed crops also contribute to biodiversity loss; 15 out of 24 important ecosystem services are assessed as in decline, with livestock identified as a culprit.

Livestock a major threat to environment: Food & Agriculture Organization of the United Nations (FAO)

Land used for grazing and for growing feed crops for these animals is often created by clearing forests, which has a negative impact on the industry's carbon footprint, because trees naturally absorb carbon dioxide.

Eating too much meat will cost us the Earth; food facts The issues surrounding meat consumption are complex and much debated, with a strong environmental case for vegetarianism. So is there such a thing as a guilt-free Sunday roast? Rin Hamburgh investigates

China is the largest importer of genetically engineered crops and one of the largest producers of GE cotton in the world, yet it has not approved any major GE food or feed crops for cultivation.

The Industry

Mughal said that production of feed crops for cattle would also be improved and improved healthy green feed would be available for cattle.

Rain spells to have good impact on wheat, other crops

Future GM feed crops will have enhanced nutritional characteristics.

GM technology for livestock sector

CF Industries is transforming natural gas into nitrogen, helping feed crops that feed the world and support a cleaner and healthier future.

CF Industries

In addition, intensive livestock production is also responsible for significant biodiversity loss due to conversion of natural habitats to grass and feed crops, the researchers noted.

Being vegan good for environment: Study

The way the majority of beef is raised demands a high carbon footprint: Fossil fuels are used to fertilize grain crops and make pesticides, trees must be cleared to make way for feed crops, and then there's the greenhouse gas methane released by belching cows.