The type of machinery to be used.
The space between the rows should allow free passage of the machinery which can be used in the field. For example, the spacing between rows of coffee is supposed to allow movement of tractor drawn implements.
Soil fertility
A fertile soil can support high plant population. Therefore closer spacing is possible.
The size of plant
Tall crop varieties require wider spacing while short varieties require closer spacing, for example, Kitale hybrid maize is widely spaced than Katumani maize.
Moisture availability.
Areas with higher rainfall are capable of supporting a large number of plants hence closer spacing than areas of low rainfall.
Use of crop.
Crop grown for the supply of forage or silage material is planted at a closer spacing than for grain production.
Pest and diseases control.
When crops are properly spaced, pests might find it difficult to move from one place to the other, for example, aphids in groundnuts.
Growth habit.
Spreading and tillering crop varieties require wider spacing than erect type.
Seed rate.
Seed rate is the amount of seeds to be planted in a given unit area governed by ultimate crop stand which is desired.
The objective of correct spacing of crop is to obtain the maximum yields from a unit area without sacrificing quality. Most crops are seeded at lighter rates under drier conditions than under wet or irrigated conditions.
Seeds with low germination percentage are planted at higher rates than those which have about 100% germination percentage. There is an optimal seed rate for various crops.
johnmulu answered the question on October 20, 2017 at 08:07
- Explain the signs of external parasites in livestock(Solved)
Explain the signs of external parasites in livestock
Date posted: October 20, 2017. Answers (1)
- Explain the procedure of transplanting kales in vegetable production (Solved)
Explain the procedure of transplanting kales in vegetable production
Date posted: October 20, 2017. Answers (1)
- Explain hardening as applied in onion production(Solved)
Explain hardening as applied in onion production
Date posted: October 20, 2017. Answers (1)
- Describe the factors to consider when selecting construction material of a farm structure(Solved)
Describe the factors to consider when selecting construction material of a farm structure
Date posted: October 20, 2017. Answers (1)
- Discuss the function of any part of a dairy shed
(Solved)
Discuss the function of any part of a dairy shed
Date posted: October 20, 2017. Answers (1)
- State the biological advantages of frozen semen.(Solved)
State the biological advantages of frozen semen.
Date posted: October 19, 2017. Answers (1)
- Give the disadvantages of pellets.(Solved)
Give the disadvantages of pellets.
Date posted: October 19, 2017. Answers (1)
- What are the advantages of a mixed grass-legume over a pure grass pasture?(Solved)
What are the advantages of a mixed grass-legume over a pure grass pasture?
Date posted: October 18, 2017. Answers (1)
- Describe establishment of grass pasture from the time land is ploughed to the time the pasture
is ready for grazing.(Solved)
Describe establishment of grass pasture from the time land is ploughed to the time the pasture
is ready for grazing.
Date posted: October 18, 2017. Answers (1)
- Describe the raising of a maize crop for grain production under the following sub-headings. (a) Ecological requirements (b) Seedbed preparation (c) Planting (d) Field management (e) Harvesting(Solved)
Describe the raising of a maize crop for grain production under the following sub-headings.
a) Ecological requirements
b) Seedbed preparation
d) Field management
e) Harvesting
Date posted: October 18, 2017. Answers (1)
- State biotic factors that influence Agriculture.(Solved)
State four biotic factors that influence Agriculture.
Date posted: October 18, 2017. Answers (1)
- Outline four qualities of a mother plant from which vegetative propagation materials should be
obtained.(Solved)
Outline four qualities of a mother plant from which vegetative propagation materials should be
obtained.
Date posted: October 18, 2017. Answers (1)
- List four ways of applying fertilizers in crops.(Solved)
List four ways of applying fertilizers in crops.
Date posted: October 18, 2017. Answers (1)
- Give four factors that determine the depth to which seeds are to be planted.(Solved)
Give four factors that determine the depth to which seeds are to be planted.
Date posted: October 18, 2017. Answers (1)
- Name three main agents of weathering.(Solved)
Name three main agents of weathering.
Date posted: October 18, 2017. Answers (1)
- State two practices used to train plants in order to grow in a designed direction and shape(Solved)
State two practices used to train plants in order to grow in a designed direction and shape
Date posted: October 18, 2017. Answers (1)
- Give four factors affecting efficiency of pesticides(Solved)
Give four factors affecting efficiency of pesticides
Date posted: October 18, 2017. Answers (1)
- Give one benefit of each of the following practices in crop production (i) Seed inoculation (ii) Seed dressing (iii) Chitting(Solved)
Give one benefit of each of the following practices in crop production.
i) Seed inoculation
ii) Seed dressing
iii) Chitting
Date posted: October 18, 2017. Answers (1)
- State four disadvantages of using organic manures in the farm.(Solved)
State four disadvantages of using organic manures in the farm.
Date posted: October 18, 2017. Answers (1)
- Name three pieces of information that may be found in a title deed(Solved)
Name three pieces of information that may be found in a title deed
Date posted: October 18, 2017. Answers (1)