#0.
A recommendation calls for 1 gm active ingredient (a.i.) of metalaxyl per kg of corn seeds. If Apron 50 SD (formulated product) contains 50% metalaxyl, how much Apron 50 SD is needed to treat 100 kg sweet corn seeds?
A
200 g
B
100 g
C
20 g
D
2 g
Answer: 200 g
#1.
This micronutrient is needed in N fixation by leguminous plants and is usually deficient in acid upland
soil
A
Zinc
B
Manganese
C
Iron
D
Molybdenum
Answer: Molybdenum
#2.
What is the inherent capacity of the soil to supply nutrients to plants in adequate amount and suitable
proportion called?
A
Nutrient availability
B
Intensity factor
C
Soil fertility
D
Soil productivity
Answer: Soil fertility
#3.
The relative ease by which a nutrient is supplied by the soil
A
Soil productivity
B
Soil fertility
C
Nutrient availability
D
Intensity factor
Answer: Nutrient availability
#4.
A method of soil fertility evaluation whereby concentration of nutrients are known before a crop is
planted
A
Biological test
B
Plant analysis
C
Nutrient deficiency symptoms
D
Soil analysis
Answer: Soil analysis
#5.
When nutrients are immobile, deficiency shows up first in.
A
Stems
B
Oldest leaves
C
Youngest leaves
D
Senescent leaves
Answer: Youngest leaves
#6.
A process of movement of individual ion bue to difference in concentration.
A
Root elongation
B
Mass flow
C
Absorption
D
Diffusion
Answer: Diffusion
#7.
A term that indicates excessive level of nutrient in the plant or soil.
A
Sufficiency
B
Poverty adjustment
C
Toxicity
D
Deficiency
Answer: Toxicity
#8.
The most appropriate soil management which increases availability of adsorbed P in acid upland soil.
A
Prolonged anaerobic conditions
B
Fertilizer application
C
Organic matter application
D
Liming
Answer: Liming
#9.
Nutrient deficiency symptoms is referred to as a language of the crop. What is the term given to describe
general yellowing of leaves as a result of the deficiency of some nutrient elements?
A
Necrosis
B
Plasmolysis
C
Chlorosis
D
Defective
Answer: Chlorosis
#10.
A term that indicates low level of nutrient elements in the plant or soil.
A
Toxicity
B
Poverty adjustment
C
Deficiency
D
Sufficiency
Answer: Deficiency
#11.
The nutrient elements in organic matter and minerals are considered unavailable. The most available
form of nutrients are in.
A
Fixed
B
Occluded
C
Exchangeable
D
Soil solution
Answer: Soil solution
#12.
The macroelement which functions as a constituent of energy transfer metabollites.
A
Calcium
B
Phosphorus
C
Potassium
D
Sulfur
Answer: Phosphorus
#13.
Which of the following element is not essential to plants?
A
Sulfur
B
Molybdenum
C
Vanadium
D
Boron
Answer: Vanadium
#14.
These elements are micronutrients and are required by plants in small amounts.
A
N, P and K
B
Cu, Mg and S
C
Zn, Co and Mn
D
Cu, Mn and S
Answer: Zn, Co and Mn
#15.
It is a natural dynamic body on the surface of the earth which supports plants and animals.
A
Minerals
B
Air
C
Land
D
soil
Answer: soil
#16.
It is primarily derived from plants and animal residues composed of at least 12% organic carbon
if the soil has no clay or at least 18% organic carbon if the soil has 60% or more clay.
A
Minerals
B
Soil water
C
Pore spaces
D
Organic soil
Answer: Organic soil
#17.
It is derived from weathering of rocks and minerals and has definite composition and properties.
A
Organic matter
B
Pore spaces
C
Inorganic soil
D
Air
Answer: Inorganic soil
#18.
It is the component of the soil which accommodates air and water.
A
Inorganic soil
B
Air
C
Pore spaces
D
Organic matter
Answer: Pore spaces
#19.
The soil air is composed primarily of _____________.