Test
Crop Management
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Preguntas del test (68)
1which of the following is normally NOT considered when comparing a crop rotation with a monoculture?
- Asociological consequences
- Bintegrated pest management
- Clabor and equipment needs
- Dyields
2which of the following is an advantage of a crop rotation over a monoculture system
- Ahigher level of management needed
- Btiming of fert and pesticide application
- Cless equipment needed
- Drisk spread across more than one commodity
3which of the following is a limitation of a crop rotation over a monoculture system?
- Amore equipment needed
- Blower level of management needed
- Cyield of all crops in the rotation increase
- Dirrigation usually needed
4------- increases available N, reduces erosion and increase infiltration
- Acover crops
- Bfallow
- Cnurse crops
- Dcompanion crops
5a double crop system is where two crops are grown in the same field over ------
- A36 months
- B24 months
- C18 months
- D12 months
6----- is not a limitatoin of cover or companion crops
- Aincreased soil erosion
- Breduced yields
- Csoil water depletion
- Dincreased cost
7fields are fallowed to conserve -----
- Aenergy
- Bnutrients
- Cwater
- Dpesticides
8pesticide carryover is most important in -------- crops
- Arotational
- Bcover
- Ccompanion
- Dadjacent
9----- is when a plant produces a chemicals toxin that impairs the growth of a different plant
- Aallelopathy
- Bantibiotics
- Cautotoxicity
- Dsymbiosis
10in clean till systems, tillage can spread ------
- Ainsects
- Bdiseases
- Cweeds
- DB & C
11starter fertilizer is commonly recommended for -----
- Apastures
- Bno till
- Cclean till
- Dall crops
12the soil test values in the top 2 inches of soil are ----- to soil test values below the top 2 inches in a no till system
- Aequal to
- Blarger than
- Csmaller than
- Dless important than
13which of the following must be sufficiently high to justify conversion of non cropland to cropland
- Anutrient availability
- Bpest populations
- Ccrop yield potential
- Derosion potential
14offspring of 2 plants which differ genetically are ------
- Aclones
- Bhybrids
- Csisters
- Dparents
15pollination is ---- in an open pollinated variety
- Aartificial
- Bcontrolled
- Cnegligible
- Dnatural
16which of the following is usually most important when selecting a variety for planting?
- Ainsect resistance
- Byield potential
- Clodging rating
- Dirrigation needs
17transgenic crops contain:
- Agenes from another organism
- Baltered genes from the same species
- Cuntransformed genes
- Dall above
18which of the following is a characteristic of a well designed field trial
- Aunreplicated strips
- Breplicated strips
- Chigher than normal fert rates
- Dirrigation of a dryland crop
19GMOs include :
- Atransgenic crops
- Bmutated crops by radiation
- Cnatural mutation
- Dall above
20if the yields of varieties A, B and C are 45, 50, and 44 bu/ac, and the LSD is 5, which are true?
- Ano differences
- BB yield is higher than C
- CB yield is higher than A and C
- DA is higher than C
21which of the following is NOT usually found in a seed tag
- Aseed size
- Bpure seed percent
- Cother crop seed percent
- Dgermination percent
22seed quality is usually highest for seed stored under :
- Alow temp and humidity
- Blow temp and light
- Clow temp and oxygen
- Dgermination percent
23which of the following is a limitation of seed treatment
- Amore seed diseases
- Bless symbiotic N fixation
- Ccost
- Dhigher germination percentage
24storage in a ---- likely decreases bacterial inoculum viability the most
- Apesticide shed
- Breefer
- Ccool dry building
- Ddealer room
25which germination test is best to evaluate germination under optimum conditions
- Awet towel
- Bdry towel
- Cwarm
- Dcold
26if pure seed content is 90% and germination is 90%, what is the %PLS?
- A90%
- B99%
- C100%
- D81%
27if % pure live seed is 80% and the recommended seeding rate is 80 lbs/ac, what adjusted seed rate should be used?
- A100 lbs/ac
- B64 lbs/ac
- C80 lbs/ac
- D88 lbs/ac
28a benefit of using certified seed is:
- Aincreased weed pressure
- Bstable, high yields
- Cno irrigation
- Dreduced fert needs
29which of the following would most likely decrease germination percentage?
- Asoil temp of 65*F
- Boxygen concentration of 18%
- Cdry soil
- Dgranular soil structure
30which of the following is NOT used in determine depth of planting
- Asoil texture with depth
- Bsoil moisture with depth
- Csoil temp with depth
- Dsoil aeration with depth
31which of the following factors is usually most important in determining when to plant
- Aseed rate
- Bsoil moisture
- Csoil aeration
- Dsoil pH
32which of the following factors is usually the most likely the result of seeding a summer crop too early
- Areduced germination
- Bhigher yield
- Cless seedling disease
- Dmore lodging
33which of the following would potentially lead to a reduced seeding rate
- Aadverse weather
- Bno till
- Coptimum soil moisture
- Dincreased seed size
34if you count 10 plants in 5 sq ft of a field at several points in that field, what is the approximate plant population?
- A45K
- B85K
- C125K
- D145K
35seeding rate is ---- plant population
- Aless than
- Bmore than
- Cequal to
- Dless than or equal to
36advantages of starter fert include:
- Aless weeds
- Blower irrigation costs
- Cless erosion
- Dmore vigor start
37the crop growth stage where roots, stems and leaves develop is:
- Avegetative
- Bflowering
- Cgermination
- Dmaturation
38growing degree days are NOT useful in determining when to:
- Atop dress nitrogen
- Bharvest
- Cinitiate tillage
- Dapply pesticides
39if the base temp is 60*F, day temp is 80*F, and the max temp is 95*F, how many heat units have accumulated?
- A20
- B60
- C80
- D0
40in many crops, night length is important in triggering
- Agermination
- Bflowering
- Cphotosynthesis
- Dvernalizatoin
41the growing point of a grass is:
- Aleaf tip
- Broot tip
- Cflower
- Dintercalary meristem
42the optimum temp for crop growth and development ----- with crop growth stage
- Aincreases
- Bdecreases
- Cchanges
- Dno change
43water needs of a crop typically increase during the season to a max, followed by :
- Aa second increase at harvest
- Ba level period until harvest
- Cdecline to harvest
- Drainfall
44which of the following accelerates canopy closure
- Awide rows
- Bnarrow rows
- Cupright plant growth
- Dlower plant population
45a plant that lives 10 years is
- Asummer annual
- Bwinter annual
- Cbiennial
- Dperennial
46crop root growth can be effected by
- Adiseases
- Binsects
- Cacidic soils
- Dall above
47which root system concentrates nutrient uptake in surface soils
- Amembranes
- Bfilamentous
- Ctap
- Dfibrous
48a crop should be replanted when stand is lost due to some stress when:
- Ait is economically justified
- Bwhen the field looks bad
- Cwhen your neighbor replants
- Dwhen you have no crop insurance
49which of the following may eliminate the possibility of replant
- Alate initial planting
- Bgood weather
- Cgood seed supply
- Dsoil fertility
50when diagnosing a crop production problem in the field, you should:
- Aconsider diseases then fertility
- Bconsider herbicide damage first
- Ccompare damage areas with normal areas
- Dwait until problem disappears
51which of the following is probably not helpful in diagnosing a crop problem in the field
- Acrop history
- Bpesticide history
- Cseed depth
- Ddays of sunlight
52which is most precise?
- A20,30,40
- B4,5,6
- C7,10,14
- D15,35,50
53----- is used to locate a possession in the field
- AGIS
- BGPS
- CGUS
- DUPS
54--- is used to apply fert, pesticides, and seeds at different rates across a field
- AGPS
- BUPS
- CVRT
- DCRT
55---- is an area that is managed similarly for a given crop input
- ACMZ
- BUPS
- CVRT
- DCRT
56sandy soils have greater ------- than clay loam soils which can affect yield
- Adrought potential
- Bwater holding capacity
- Cavailable water
- Dsurface area
57geological coordinates combine ------ and ------
- Alat and lon
- Btownship and range
- Cprincipal meridian and state
- Dcity and town boundaries
58yield maps ----- from year to year for the same crop
- Avary
- Bremain constant
- Csuperimpose
- Dincrease
59yield monitors are :
- Aindependent of combine speed
- Bused to estimate crop yields prior to harvest
- Calways compatible with mapping software
- Dused to estimate yield variation within a field
60harvest date is effected by:
- Ahybrid or variety
- Bexcess soil P
- Cneutral soil pH
- Dseed quality
61which of the following harvest conditions most likely would reduce seed quality?
- Alow humidity
- Brain/dry cycles
- Csunshine
- Dlight wind
62identity-preserved IP crops are :
- Aused in strip cropping with cross pollinated varieties of the same crop
- Bstored in the same bin as other varieties of the same crop
- Charvested before cleaning the combine
- Dkept separate form other varieties of the same crop
63which of the following factors is most important in maintaining crop quality during storage
- Amoisture at harvest
- Buse of fungicides
- Cair tight storage
- Dpresence of beneficial insects
64which of the following most likely will damage grain kernels
- Aimproper thresher speed
- Bslow ground speed in combining
- Cexcessive weed seed
- Dhigh fan speed
65crop mix on a farm is used to reduce -----
- Aincome
- Bliability
- Crisk
- Dprofit
66if the value of the crop is $3/bu, and a production practice costs $11.50/ac, which of the following yield increase would make it profitable
- A1bu/ac
- B2bu/ac
- C3bu/ac
- D4bu/ac
67---- is a commodity crop
- Awalnuts
- Bwheat
- Cflowers
- Dfigs
68if the current local cash price of a crop is $12/bu, and the future price is $9/bu, the basis is
- A$3/bu
- B-$3/bu
- C3/4
- D$21/bu
Información
- Descripción
- CCA CCA international Study quiz Test sobre Crop Management , creado por Calvin Sabrowski el 30/12/2022.
- Autor
- Calvin Sabrowski
- Idioma
- English
- Visitas
- 1
- Etiquetas
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