discovered in the 18th century that plants absorb mineral nutrients as inorganic ions in water. Normally soil is thought to be required for plant growth‚ but in actuality‚ soil is not needed at all. When the mineral nutrients in the soil dissolve in water‚ plant roots have the ability to absorb them. When the required mineral nutrients are introduced into a plant’s water supply artificially‚ soil is no longer required for the plant to thrive. Almost any terrestrial plant will grow with hydroponics
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Study Questions: 1.) Why is sub-soiling needed in soils with hard pans? Sub-soiling is essential especially to hard pan layer because it will help the roots penetrate deep and be able to explore and obtain water and nutrients from larger volume of soil. Hard span obstructs root’s downward proliferation and restricts root growth of crops (of crops that have vertical root growth). With sub-soiling‚ the needed soil depth‚ at least 80cm will be met . With sub-soiling‚ we can break hard pan without
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earthworm casting is a better planting medium than garden soil. Five set-ups were prepared including one control‚ with the same amount of water given and exposure to sunlight and temperature. However‚ they differ in the proportion of earthworm casting in every pot. The earthworm casting and garden soil were weighed and then thoroughly mixed (according to the proportion of earthworm castings‚ 0%‚ 25%‚ 50%‚ 75% & 100%). Each mixture of soil had a total of two kilograms. The mixtures were placed in
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activities that range from Shallow to Deep foundations. Refer to photos in appendix 1 for further clarification. Soil Investigation: Prior to any foundation design or excavation work to take place‚ soil Geotechnical Investigation using process is carried out by a competent contractor‚ this to explore the surface and subsurface of each foundation. A CME-45B Truck Mounted Auger Drill is used retrieve soil samples‚ all samples are tested in an off-site laboratory. The truck operators are usually exposed to various
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HAEF Psychico College ENVIRONMENTAL SYSTEMS & SOCIETIES LAB REPORT (SL) TITLE OF LAB : Investigation of the impact of overpopulation in biodiversity Objective of the investigation: To investigate the impact of climate change in biodiversity Research Question: How does the temperature change ( each pot will be held in 35°C‚ 20°C‚ 10°C‚ 0°C‚ -10°C respectively) influence the growth of lettuce plants calculated from the measurement of the weight of each plant every 2 days
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Organisms are open systems that interact continuously with their environment. The study of the interaction between organisms and the environment; the connectedness between living systems and non-living systems on the Earth is called ecology. The term “ecology” which was coined by Ernst Haeckel comes from the Greek root words oikos logos literally meaning “the study of household”. Haeckel was referring to the interactions within the house of nature and we have used the word ecology (translated from
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COLPLANT Dr. G. A. Ajiboye COURSE CONTENT: Basic principles of soil classification. Soil morphological characteristics and classification. Soil forming minerals and rocks. Soil survey methodology. Assemblage of maps; use of aerial photographs and topographic maps for soil survey and classification. Type of soil survey‚ field mapping and soil sampling. Routine laboratory determinations and correlation of soil data. Soil survey report writing and interpretations. Concepts‚ principles and
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Species diversity 2. Ecosystem diversity Biodiversity 3. Genetic diversity Study aim: Investigate the natural and artificial ecosystems to understand the relationship between the components (e.g plants‚ animals‚ microorganisms‚ soil‚ light‚ and humidity) in each ecosystem‚ the physical factors and the differences between these two ecosystems. Location: 1. Natural ecosystem-Bukit Gasing: The Bukit Gasing Forest Park straddles the border of Petaling Jaya and Kuala Lumpur in
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gathered 25 lima beans and made 5 groups for different calcium concentrations (0 mg‚ 100 mg‚ 200 mg‚ 300 mg‚ 400 mg). I used constant variables such as the amount of water‚ soil‚ and light to ensure the accuracy of the results. The growth of the lima beans was recorded over a period of 5 days. Hypothesis: If calcium is added to the soil in greater amounts (0mg‚ 100mg‚ 200mg‚ 300mg‚ 400mg)‚ then the lima beans will grow healthier and taller because calcium aids in the uptake of nutrients in plants. Rationale:
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Organic Mulch for Tomato Plants Abstract Mulching in agricultural provides a safe yet equally profitable method of enriching and fertilizing the soil planted with crops. Most often-used mulches are of organic composition‚ such as dry leaves and barks. Unlike synthetic fertilizers and herbicides‚ these organic mulches pose no or little damage to the soil and crops. In this study‚ the effectiveness of dried papaya leaves as organic mulch for tomato was tested. Papaya mulches in different thickness
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