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 ?
In addition, recycling of crop residues has been suggested to improve soil fertility and to avoid waste of resource and atmospheric pollution (Cao et al.
2013) suggested that enhanced proportions of WSC, POM-C, LFOM-C in TOC and that of POMN, LFOM-N, in TN with the supply of optimum and balanced inorganic fertilizers and incorporation of crop residues due to integrated nutrient management (INM).
Tillage, crop residue, and nitrogen level effects on soil properties and crop yields under rice-wheat system in the Terai region of Nepal.
Study aims to test the CO2 release from wheat-maize crop residues at constant temperature.
The most unfavorable conditions are created by monocrops that is explained by the fact that soil intakes uniform crop residues for several years.
The Union Agriculture Ministry recently told the NGT that it had finalised national guidelines for states to halt the burning of crop residue.
The relative importance of crops and crop residues and their potential contribution to biofuel production is discussed.
Burning of crop residues also reduces microbial population [Raison (1979)] and organic carbon [Rasmussen, et al.
Increases in SOM content in the 15-30 cm layers suggested that a fraction of the added organic manure and crop residues was placed down to the 15-30 cm soil layers during incorporation operations or over the 5-year period of field experimentation.
A field experiment was conducted to determine the effect of crop residue incorporation @ 5 tons wheat straw ha -1 along with N starter dose (0, 30kg N ha-1, 60kg N ha-1 and 90kg N ha-1) on rice (supper basmati) production and soil health at Soil Salinity Research Institute( SSRI) Farm, Pindi Bhattian, district Hafizabad under saline sodic soils (ECe=5.
In the presence of crop residue, the winged furrow opener created inverted T-shaped groove and the hoe-type furrow opener created U-shaped groove that resulted in greater number of seedling emergence, oxygen diffusion rates and earthworms activity than V-shaped groove created by the triple-disk furrow opener.