- Avoid weeds which compete with crop nutrients, space, light and soil moisture.
- Remove parasite weeds like the witch weed.
- Improve the quality of produce which can be reduced by presence of weed seeds, and bad weed smells
- Avoid farm poisoning by poisonous weeds like thorn apple.
- To control some pests which can be hosted by some weeds.
- To allow better crop germination by removing weeds that are allelopathic.
- Open irrigation channels
- improves the quality of pastures
- Ease work by killing irritating weeds.
Kavungya answered the question on June 13, 2019 at 08:42
-
Give one reason in each case why its difficult to control the following weeds. (i) Oxalis (ii) Nut Grass (iii) Couch grass
(Solved)
Give one reason in each case why its difficult to control the following weeds.
i) Oxalis
ii) Nut Grass
iii) Couch grass
Date posted:
June 13, 2019
.
Answers (1)
-
Name two classes of weeds based on morphology.
(Solved)
Name two classes of weeds based on morphology.
Date posted:
June 13, 2019
.
Answers (1)
-
Give three ways by which weeds are adapted for successful propagation.
(Solved)
Give three ways by which weeds are adapted for successful propagation.
Date posted:
June 13, 2019
.
Answers (1)
-
State two herbicides that can be used to control Black jack in a field of growing maize.
(Solved)
State two herbicides that can be used to control Black jack in a field of growing maize.
Date posted:
June 13, 2019
.
Answers (1)
-
List six economic importance of weeds in mixed farming.
(Solved)
List six economic importance of weeds in mixed farming.
Date posted:
June 13, 2019
.
Answers (1)
-
Define the term noxious weed.
(Solved)
Define the term noxious weed.
Date posted:
June 13, 2019
.
Answers (1)
-
State four ways in which chemicals control weeds.
(Solved)
State four ways in which chemicals control weeds.
Date posted:
June 13, 2019
.
Answers (1)
-
Outline four farm conditions that necessitate the use of herbicides over other methods in controlling weeds
(Solved)
Outline four farm conditions that necessitate the use of herbicides over other methods in controlling weeds
Date posted:
June 13, 2019
.
Answers (1)
-
Describe any four types of land slides
(Solved)
Describe any four types of land slides
Date posted:
June 13, 2019
.
Answers (1)
-
Outline four roles of trees in soil and water conservation.
(Solved)
Outline four roles of trees in soil and water conservation.
Date posted:
June 13, 2019
.
Answers (1)
-
Describe the effects of solifluction and landslides in agriculture.
(Solved)
Describe the effects of solifluction and landslides in agriculture.
Date posted:
June 13, 2019
.
Answers (1)
-
Describe the procedure of constructing a cut-off drain.
(Solved)
Describe the procedure of constructing a cut-off drain.
Date posted:
June 13, 2019
.
Answers (1)
-
Outline five requirements for the success of settlement schemes.
(Solved)
Outline five requirements for the success of settlement schemes.
Date posted:
June 13, 2019
.
Answers (1)
-
Give FOUR benefits of a title deed to a farmer.
(Solved)
Give FOUR benefits of a title deed to a farmer.
Date posted:
June 13, 2019
.
Answers (1)
-
Give four disadvantages of minimum tillage.
(Solved)
Give four disadvantages of minimum tillage.
Date posted:
June 13, 2019
.
Answers (1)
-
Give at least two equipment required for the building of a Crush
(Solved)
Give at least two equipments required for the building of a Crush.
Date posted:
June 13, 2019
.
Answers (1)
-
Give three demerits of using stones as a construction material in the farm.
(Solved)
Give three demerits of using stones as a construction material in the farm.
Date posted:
June 12, 2019
.
Answers (1)
-
Describe the uses of the various tools used in the fixing of barbed wire fence on the posts.
(Solved)
Describe the uses of the various tools used in the fixing of barbed wire fence on the posts.
Date posted:
June 12, 2019
.
Answers (1)
-
State four factors that lower the quality of concrete.
(Solved)
State four factors that lower the quality of concrete.
Date posted:
June 12, 2019
.
Answers (1)
-
How high should the floor of a calf pen be raised above the ground level?
(Solved)
How high should the floor of a calf pen be raised above the ground level?
Date posted:
June 12, 2019
.
Answers (1)