Get premium membership and access questions with answers, video lessons as well as revision papers.
a)Acid rain: Atmospheric precipitation with pH values less than 5.6 due to inorganic acids (such as nitric and sulphuric) formed when oxides of nitrogen and sulphur are emitted into the atmosphere.
b)Acid sulphate soils: Soils that are potentially extremely acid with a pH less than 3.5 because of the presence of large amounts of reduced forms of sulphur that are oxidised to sulphuric acid if the soils are exposed to oxygen when they are drained or excavated. A sulphuric horizon containing the yellow mineral Jarosite is often present.
c)Active acidity: The activity of hydrogen ions in the aqueous phase of a soil. It is measured and expressed as a pH value.
jim items answered the question on October 12, 2018 at 15:25
- List down the twelve known soil orders according to USDA classification system.(Solved)
List down the twelve known soil orders according to USDA classification system.
Date posted: October 8, 2018. Answers (1)
- When distinguishing soil horizons found in different soil profile, several symbols are used to represent different characteristics.Match the letters below with the correct characteristic each...(Solved)
When distinguishing soil horizons found in different soil profile, several symbols are used to represent different characteristics.Match the letters below with the correct characteristic each represent.
a-
b-
c-
d-
e-
f-
ff-
g-
h-
i-
j-
jj-
k-
m-
n-
o-
p-
q-
r-
s-
t-
v-
w-
x-
y-
z-
Date posted: October 8, 2018. Answers (1)
- List at least eight examples of soil properties considered when classifying soil families.(Solved)
List at least eight examples of soil properties considered when classifying soil families.
Date posted: October 8, 2018. Answers (1)
- The subgroup concept is based on divisions that assist the soil classifier in further dividing soils into finer categories, which are representative of several properties.List...(Solved)
The subgroup concept is based on divisions that assist the soil classifier in further dividing soils into finer categories, which are representative of several properties.List at least four and likewise state at least three examples.
Date posted: October 8, 2018. Answers (1)
- By giving examples illustrate the four soil subsurface horizons considerations put in place when classifying soil's great group.(Solved)
By giving examples illustrate the four soil subsurface horizons considerations put in place when classifying soil's great group.
Date posted: October 8, 2018. Answers (1)
- By giving examples illustrate the three considerations put in place when classifying soil suborders.(Solved)
By giving examples illustrate the three considerations put in place when classifying soil suborders.
Date posted: October 8, 2018. Answers (1)
- By giving examples, explain the four considerations put in place when classifying soil orders.(Solved)
By giving examples, explain the four considerations put in place when classifying soil orders.
Date posted: October 8, 2018. Answers (1)
- The USDA system of Soil Taxonomy (soil naming) consists of a hierarchy of six levels.Name them.(Solved)
The USDA system of Soil Taxonomy (soil naming) consists of a hierarchy of six levels.Name them.
Date posted: October 8, 2018. Answers (1)
- Discuss the determination of soil electrical conductivity in a farm under the following subheadings:
a)Materials and equipment required.
b)Procedure followed.(Solved)
Discuss the determination of soil electrical conductivity in a farm under the following subheadings:
a)Materials and equipment required.
b)Procedure followed.
Date posted: October 5, 2018. Answers (1)
- Discuss the determination of soil pH in a given field under the following subheadings:
a)Equipment.
b)Reagents.
c)Procedure.(Solved)
Discuss the determination of soil pH in a given field under the following subheadings:
a)Equipment.
b)Reagents.
c)Procedure.
Date posted: October 5, 2018. Answers (1)
- Discuss the various classification of drip irrigation system.(Solved)
Discuss the various classification of drip irrigation system.
Date posted: October 5, 2018. Answers (1)
- Discuss four intrinsic aspects of sprinkler irrigation.(Solved)
Discuss four intrinsic aspects of sprinkler irrigation.
Date posted: October 5, 2018. Answers (1)
- Discuss seven main limitations of sprinkler irrigation.(Solved)
Discuss seven main limitations of sprinkler irrigation.
Date posted: October 5, 2018. Answers (1)
- Discuss the advantages of sprinkler irrigation system under the following subheadings:
a)Topography.
b)Micro climate.
c)Soil advantages.
d)Finance aspects.
e)Health aspects.
(Solved)
Discuss the advantages of sprinkler irrigation system under the following subheadings:
a)Topography.
b)Micro climate.
c)Soil advantages.
d)Finance aspects.
e)Health aspects.
Date posted: October 5, 2018. Answers (1)
- Explain three sprinkler labor advantages.(Solved)
Explain three sprinkler labor advantages.
Date posted: October 5, 2018. Answers (1)
- Describe five advantages of sprinkler method of irrigation(Solved)
Describe five advantages of sprinkler method of irrigation.
Date posted: October 5, 2018. Answers (1)
- State four main design considerations for designing furrow irrigation systems.(Solved)
State four main design considerations for designing furrow irrigation systems.
Date posted: October 5, 2018. Answers (1)
- Describe eight ways that may be used in Mwea irrigation scheme to promote water savings for the farmers.(Solved)
Describe eight ways that may be used in Mwea irrigation scheme to promote water savings for the farmers.
Date posted: October 5, 2018. Answers (1)
- Growing calendar in Mwea irrigation scheme starts in July and this because of a number of reasons.State and explain the four main reasons.(Solved)
Growing calendar in Mwea irrigation scheme starts in July and this because of a number of reasons.State and explain the four main reasons.
Date posted: October 5, 2018. Answers (1)
- List and explain seven factors to consider when determining the size of the basin to construct in an irrigation field.(Solved)
List and explain seven factors to consider when determining the size of the basin to construct in an irrigation field.
Date posted: October 4, 2018. Answers (1)