Exam 2 | CSES 2444 - Agronomic Crops, Quizzes of Environmental Science

Download Exam 2 | CSES 2444 - Agronomic Crops and more Quizzes Environmental Science in PDF only on Docsity! TERM 1 What is the first ancestor of corn? DEFINITION 1 Teosinte TERM 2 Where Corn Origanated DEFINITION 2 Mexico TERM 3 Weight of One Bushel of Corn DEFINITION 3 56 pounds TERM 4 How is grain yield determined? DEFINITION 4 Number of plants per unit areaNumber of seeds per plantWeight of those seeds TERM 5 How is crop Production Determined? DEFINITION 5 Crop yield x crop area TERM 6 #1 Corn Producing State DEFINITION 6 Iowa TERM 7 How much corn is used for livestock feed? DEFINITION 7 36% TERM 8 How much corn is used for ethanol production? DEFINITION 8 40% TERM 9 Most common type of Corn grown in the USA DEFINITION 9 Yellow Dent #2 TERM 10 What is Environmental corn? DEFINITION 10 low phytate cornimproves animal digestion of PLess P in manure, good for water quality TERM 21 Why would the tip of a kernel abort? DEFINITION 21 The plant went through stress in the early R stages, when it is determined how many kernels will be made TERM 22 The best moisture to Harvest Corn DEFINITION 22 25% - 26% TERM 23 Determinate Crops DEFINITION 23 They stop producing vegetative growth when reproductive processes start TERM 24 Where did soybeans originate? DEFINITION 24 China TERM 25 What were soybeans first used for in the US? DEFINITION 25 Forage/Silage TERM 26 When did soybean become a major crop in the US? DEFINITION 26 1950's TERM 27 How has soybean acreage changed? DEFINITION 27 They have increased TERM 28 How has soybean yield changed? DEFINITION 28 stayed about the same TERM 29 What is the main us of soybeans in the US? DEFINITION 29 Oilslivestock food TERM 30 What are three reasons why soybeans became an important crop? DEFINITION 30 replacement for oatswell adapted to the USA climateclose to other small grains in harvesting TERM 31 Who is the #2 soybean producer in the world? DEFINITION 31 Brazil TERM 32 What is biological N fixation? DEFINITION 32 n2 ---> nh3 TERM 33 What is the relationship between N fixing bacteria and legume? DEFINITION 33 The bacteria recieves assimilatesespecially CPlant recieves N2 TERM 34 What is Nitrogenase? DEFINITION 34 A large enzyme TERM 35 How do environment variables affect N fixation? DEFINITION 35 c-n ratiosoil ph and moisturemineral defienciesclimate TERM 46 What are the four main stages of wheat development? DEFINITION 46 TilleringStem ExtensionHeadingRipening TERM 47 Name the two scales used to identify wheat growth DEFINITION 47 Zadoks and Feekes TERM 48 When is the best time to apply N to wheat? DEFINITION 48 Stem extension (after GS 30) TERM 49 Hard Red Spring DEFINITION 49 Designer wheat foods TERM 50 Soft Red Winter DEFINITION 50 Versatile, milling and baking TERM 51 Durum DEFINITION 51 hardest of all, premium foods TERM 52 Hard White DEFINITION 52 newest class, noodles, whole wheat TERM 53 Soft White DEFINITION 53 low moisture, cakes and pastries TERM 54 Germ DEFINITION 54 nutrient rich embryo, will sprout and grow TERM 55 Endosperm DEFINITION 55 biggest part, mostly starch TERM 56 Benefits of Grasslands DEFINITION 56 stop erosionimprove soilprotects water source