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-Mycorrhizal fungi are present in almost all soils.
-Intensive management practices limit-viability and infectivity of native mycorrhizal fungi.
-Excessive applications of chemical fertilizers and pesticides.
-Metabolized by soil microbes.
-Severe soil disturbances like erosion, tillage,compaction.
-Often absent in sterilized or soil-less potting media.
-Non-native transplants grown in soil and climactic conditions different from the areas where they are planted.
-Plants established in areas prone to environmental stresses.
jim items answered the question on January 29, 2019 at 16:19
- Discuss the two types of mycorrhizae associations in higher plants.(Solved)
Discuss the two types of mycorrhizae associations in higher plants.
Date posted: January 29, 2019. Answers (1)
- Discuss fungus-plant mutualism in natural ecosystems.(Solved)
Discuss fungus-plant mutualism in natural ecosystems.
Date posted: January 29, 2019. Answers (1)
- Briefly describe kingdom fungi as both;
a) Decomposers.
b) Mutualists.(Solved)
Briefly describe kingdom fungi as both;
a) Decomposers.
b) Mutualists.
Date posted: January 29, 2019. Answers (1)
- Discuss asexual and sexual reproduction in the kingdom fungi.(Solved)
Discuss asexual and sexual reproduction in the kingdom fungi.
Date posted: January 29, 2019. Answers (1)
- Name three types of the body cavity(haemocoelom) in phylum arthropoda(Solved)
Name three types of the body cavity(haemocoelom) in phylum arthropoda
Date posted: January 29, 2019. Answers (1)
- How do plants in hot areas survive?(Solved)
How do plants in hot areas survive?
Date posted: January 28, 2019. Answers (1)
- Describe how a sample of oil can be extracted from macadamia seeds in a Chemistry laboratory(Solved)
Describe how a sample of oil can be extracted from macadamia seeds in a Chemistry laboratory.
Date posted: January 21, 2019. Answers (1)
- Below is a word equation of a process in plant nutrition.
Carbon (IV) oxide + water TJ/k L + Oxygen
(a) (i) Name the product labelled L
(ii)...(Solved)
Below is a word equation of a process in plant nutrition.
Carbon (IV) oxide + water TJ/k L + Oxygen
(a) (i) Name the product labelled L
(ii) State the requirements labelled J and K (2 marks)
(b) Explain the importance of the product L. (2 marks)
Date posted: January 21, 2019. Answers (1)
- State one difference between movement and locomotion.(Solved)
State one difference between movement and locomotion.
Date posted: January 21, 2019. Answers (1)
- State factors that increase the rate of diffusion.(Solved)
State factors that increase the rate of diffusion.
Date posted: January 21, 2019. Answers (1)
- Explain why adenine and thymine have double bond while cytosine and guanine have triple bond(Solved)
Explain why adenine and thymine have double bond while cytosine and guanine have triple bond.
Date posted: January 20, 2019. Answers (1)
- Explain the importance of protecting the forest ecosystem with reference to the following:(20 marks)
(a)climate change
(b)biodiversity
(c)biotechnology
(d)water conservation
(e)pollution(Solved)
Explain the importance of protecting the forest ecosystem with reference to the following:(20 marks)
(a)climate change
(b)biodiversity
(c)biotechnology
(d)water conservation
(e)pollution
Date posted: January 16, 2019. Answers (1)
- Distinguish between a weed, Noxious plant and invasive species.(Solved)
Distinguish between a weed, Noxious plant and invasive species.
Date posted: January 11, 2019. Answers (1)
- Give two importance of respiratory quotient(Solved)
Give two importance of respiratory quotient.
Date posted: January 6, 2019. Answers (1)
- Discuss the components of the nephron(Solved)
Discuss the components of the nephron.
Date posted: January 4, 2019. Answers (1)
- Name two classes of phylum arthropoda with cephalothorax(Solved)
Name two classes of phylum arthropoda with cephalothorax
Date posted: December 26, 2018. Answers (1)
- Describe the route taken by water from the soil up to the evaporating surface of a plant
(Solved)
Describe the route taken by water from the soil up to the evaporating surface of a plant
Date posted: December 6, 2018. Answers (1)
- Describe the adaptations of the nervous system to its functions(Solved)
Describe the adaptations of the nervous system to its functions
Date posted: December 6, 2018. Answers (1)
- State the economic importance of members of Monera and Fungi and for each economic importance name a suitable or appropriate organism(Solved)
State the economic importance of members of Monera and Fungi and for each economic importance name a suitable or appropriate organism
Date posted: December 6, 2018. Answers (1)
- Describe the process of mitosis(Solved)
Describe the process of mitosis
Date posted: December 4, 2018. Answers (1)