a) Green manures Green manures are prepared from green plants such as crops mainly grown for this purpose are cut before flowering, chopped into the smaller pieces and ploughed into the soil where they decompose and rot in the soil. The plants used to prepare green manures must have a lot of leaves i.e. they must be leafy and they include the following: maize, sorghum, nappier grass and plants that are leguminous e.g. cowpeas, beans, sunflower and lucern which are able to grow quickly, rot quickly and contain a high amount of nitrogen.
b) Farm/ animal manures (FYM) This type of manure is made from animal waste such as urine, dung, poultry dropping and animal beddings e.g. layers of grass, wood shavings or sawdust are a good source of plant nutrient since they add organic matter to the soil. These type manures should not be exposed to the direct rain or sunshine because this way they lose the nutrients.
c) Compost manure This is a mixture of plants i.e. decayed leaves and peeling from vegetables from kitchen before and leftovers and animal waste. This manure is used to improve soil fertility preparation of compost manure is by pilling plant materials in heap or pit in areas which are not wet. The compost heap is decomposed by activities of bacteria.
Fast decomposition is encouraged by the following:
• Keeping the heap moist but not wet
• Adding layer of decayed materials rich in bacteria e.g. farm yard manure
• Adding a layer of top soil to introduce decomposers in the heap
• Covering the heap at least for three or four weeks so that air can circulate freely.
raphael answered the question on October 9, 2018 at 04:56
-
Types of crop pests, effects and control measures
(Solved)
Types of crop pests, effects and control measures
Date posted:
October 9, 2018
.
Answers (1)
-
Describe an experiment on conditions necessary for germination
(Solved)
Describe an experiment on conditions necessary for germination.
Date posted:
October 8, 2018
.
Answers (1)
-
List the parts of a seed and give their functions. Give a diagram showing the parts.
(Solved)
List the parts of a seed and give their functions. Give a diagram showing the parts.
Date posted:
October 8, 2018
.
Answers (1)
-
Outline the functions of parts of flower with aid of diagrams
(Solved)
Outline the functions of parts of flower with aid of diagrams.
Date posted:
October 8, 2018
.
Answers (1)
-
Give ways through which medicines are misused
(Solved)
Give ways through which medicines are misused.
Date posted:
October 7, 2018
.
Answers (1)
-
Describe some of the common immunizable diseases
(Solved)
Describe some of the common immunizable diseases.
Date posted:
October 7, 2018
.
Answers (1)
-
Describe human excretory organs and outline the waste products they get rid of
(Solved)
Describe human excretory organs and outline the waste products they get rid of
Date posted:
October 7, 2018
.
Answers (1)
-
With aid of diagrams, describe fertilization, development of foetus and birth process in human beings
(Solved)
With aid of diagrams, describe fertilization, development of foetus and birth process in human beings.
Date posted:
October 7, 2018
.
Answers (1)
-
With the aid of a diagram, describe the structure and functions of the heart
(Solved)
With the aid of a diagram, describe the structure and functions of the heart.
Date posted:
October 7, 2018
.
Answers (1)
-
Outline the types of blood vessels and their functions
(Solved)
With aid of diagrams, outline the types of blood vessels and their functions.
Date posted:
October 6, 2018
.
Answers (1)