crop

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crop

(krŏp)
n.
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

  1. in vertebrates, particularly some birds, an expanded part of the oesophagus where food is stored.
  2. in invertebrates, an expansion of the anterior part of the gut system where food is either digested or stored.
  3. the agricultural or commercial fishery yield.
  4. 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.

crop

1. a saccular diverticulum of the esophagus just anterior to the entrance to the thorax. Present in all domestic birds.
2. domesticated plants sown and harvested for use by humans.
3. a cosmetic surgical procedure carried out on the ears of dogs of certain breeds. See ear cropping.

crop-bound
impaction of the crop in a bird.
crop-eared
small eared.
crop flush
1. treatment of a sick bird by a flushing out, with normal saline via an esophageal tube, of food and debris from the crop.
2. see also crop wash (below).
impacted crop
distention of the crop with undigested food.
crop milk
crumbly material, composed of lipid-laden, desquamated epithelial cells mixed with food, elaborated by both male and female pigeons in the crop and regurgitated to feed the nestlings.
pendulous crop
a condition of domesticated birds in which the crop becomes very distended and full of feed. Sporadic cases only, but there is an inherited predisposition to gross distention in turkeys. Called also impacted crop or crop bound.
crop residues
the remains of a crop after the commercially sought part of it has been harvested, e.g. wheat stubble, pea haulms, oaten straw.
crop wash
used in the differential diagnosis of trichomoniasis and candidiasis and to assess crop flora in birds with regurgitation and other signs referable to upper alimentary tract disease.
References in periodicals archive ?
Although these crop residues often are used by the villagers as fuel for cooking, they are shifting to other sources of energy for that purpose, allowing them to keep the straw and cornstalks for feed.
The path to a sustainable and secure energy future based on corn stover, wheat straw and other crop residues requires innovation," said BIO Industrial and Environmental Section vice president Brent Erickson.
Although local markets for crop residues and forages can be found in many areas, little is known about their levels of performance, even while livestock producers are increasingly reliant on markets for feed.
The images revealed huge amounts of crop residues burning in Punjab, Haryana and Uttar Pradesh.
An estimated 446 M dry tons of crop residues are produced per year in the US (Perlack et al.
This power generation from crop residues would be a source of income for the farmers along with generation of additional employment opportunities and economic activities on sustainable basis.
Figure 2 compares the wheat crop residues on com yield shows.
Near-to-surface crop residues are another slug concern, especially when a new crop is being established.
A renewed interest in crop residues as a source of soil organic matter (Kotze 2004) has led to increased attention on the effects of different residue management practices on soil pH and plant nutrients.
The physical removal of crop residues from cotton-wheat fields results in export of nutrients and organic matter from the soil system and, in turn, deteriorates the physical quality.
Conservation tillage, a suite of low-impact cultivation practices that include leaving crop residues such as corn stalks in fields and planting new crops on top, significantly decreases the number of tractor passes needed to prepare fields for planting.