Agricultural Science Flashcards
(36 cards)
What animals did humans begin domesticating first
Dogs
What is one possible reason that pigs were domesticated
Pigs were utilized more in settled farming communities than in nomadic groups because they are Difficult to move For long distance
What traits did animals that were easier to domesticate have
Early people found animals that form large herds or flocks and eat a wide variety of feeds are easier to domesticate
when is an animal considered domesticated
- they are kept for a distinct purpose
- humans control their breeding
- their survival depends on humans
- they develop traits that are not found in the wild
Domestication allowed humans to have animals with appropriate temperament and a steady food supply. What else are animals used for?
Food, clothing, shelter, tools, etc
How did selective breeding take place
Selective breeding occurred as humans got rid of animals with undesirable traits, not allowing them to produce
Define cutability
Amount of lean meat
Which breed is known as the easiest-calving European.
Hereford
Why are Brahmin-influenced cattle very popular in the southern part of the United States
Heat tolerant
Wha Are the major dairy cattle breeds
Holstein, arryshire, shorthorn, Jersey, gernsey
What are the advantages and disadvantages of dairy production
Provide food and jobs/ large startup cost
What are the leading states and nations in their production, and what are the major export and import markets for the United States
Wisconsin, Iowa, Minnesota
What dairy breed produces the majority of milk in the United States today
Holstein
What dairy breed it is classified as one of the oldest breeds
Brown Swiss
What breed of dairy cattle produces milk that is slightly more golden in color than that of the other breeds today
Guernsey
What breed of dairy cattleis characterized as the most efficient producer in the world
Holstein
What breed of dairy cattle is characterized as a dual purpose breed
Shorthorn
What are the components of a corn seed
Kernal, Seed coat, embryo, endosperm, crown, hilum
How did the characteristics of corn varieties compare
Cultivated plant within a species it that shows significant difference from other plants retains its features when reproduced
How are hybrid corns selected
Hybrid is an offspring from genetically different parents
What are the nutrient requirements
More nutrients than most other crops
How is the proper amount of fertilizer calculated
To yield 150 bushels per acre, a corn crop will require 170 pounds of N, 35 pounds of P205, and 175 pounds of K20
What are the developmental stages of a corn plant
Vegetative/ reproductive
Vegetative comes before reproductive
What factors affect each stage
Different factors affect each stage
