Introduction Essential oils (EOs) are aromatic volatile liquids obtained from plant materials whether they are vascular plant or nonvascular plants including; buds, flowers, fruits, seeds, leaves, twigs, bark, wood ,roots and herbs. Citrus plants constitute one of the main essential oils sources (Burt, 2004; Hammer, 1999). They belong to Rutaceae family, which originated from tropical and subtropical south-eastern parts of the world (Sawamura, 2010). Citrus species were cultivated in China long…
What makes plants grow? How do plants get energy ? Where do plants get their mass? Well Jan Baptist Van Helmont, Joseph Priestley, and Jan Ingenhousz are great scientist who did experiments about photosynthesis to have a better understanding about it. As you read this you will learn how each one came about there experiment and how they learned from it. Jan Baptist Van Helmont experiment was the willow tree. He wanted to see if plants obtained their mass for the soil. He measured the tree…
older lesions. The fungus causes infected leaves to turn yellow and drop from the plants. The lifecycle of the septoria brown spot fungus begins when it overwinters in crop residue, infected seed, leaf and stem debris as minute brown fruiting bodies (pycnidia). The microscopic spores produced on living tissues or dead plants are released during wet weather. Wind and rainfall disperses the spores onto healthy plants, and infection begins. Favorable…
distribution is essential to plant growth. Both garden beds at the Chattanooga Girls Leadership Academy need water, but different amounts. In our area, because of climate change, Chattanooga has a rainfall that alternates between flooding, normal, and drought situations. One way to address this issue of the climate-change conditions, is to use a raised bed, which would be conducive to sprinkler or irrigation system. Water is a major asset to the growth of plants. On the website “Gardening…
Plants get mass from the air, specifically carbon dioxide. The results from both VonHelmont's experiment and the radish seed experiment support this idea. In VonHelmont’s experiment, the plant gained 164 pounds in 5 years while the soil only lost 2 ounces in weight.These results reveal that a plant does not receive its mass from soil. The roots of the plant absorbed water from the soil in order to photosynthesize causing the soil to lose 2 ounces overtime. In the radish seed experiment, the…
hydroponics? As the name says it all, hydroponics is the process of growing plants in water with or without soil. N.F.T is a very important technique for hydroponics. N.F.T is expanded as Nutrient fertilization technique. It is a way of growing plants using water flowing through a specifically designed channel. This water is quite different from the normal water we use. This water contains many nutrients required for the plant to grow, such as calcium potassium and sodium. Thus it makes it…
the process used by plants, algae and some bacteria, to use the energy from the sunlight to transform carbon dioxide and water into glucose and oxygen. The equation for photosynthesis is: carbon dioxide + water light energy glucose + oxygen. Chloroplasts are an organelle found in the leaves of green plants and are essential in photosynthesis as they are responsible for producing the glucose and storing the energy. Photosynthesis is vital for all life on earth as the plants create their…
Plants and animals that are non-native mostly are harmful to an environment. When plants and animals are introduced and they are harmful they can kill other plants and animals that are native. Although we cannot always control the invasive species that come into the specific biome there are ways to help either prevent some of them…
ultraviolet rays and light rays. Photosynthesis is the way in which some specialised bateria and green plants use their chlorophyll to trap light energy and then use this energy to convert carbon dioxide and water to glucose and oxygen. The green colour in plants is from the chemical chlorophyll which is found in the chloroplasts in the cells of the plant. It is very concentrated in the leaves of the plants due to the surface of the leaf being flat which allows it to have a very big surface area…
Introduction Plants use both sodium and chloride to aid in normal function. Sodium is not essential in most plants, it can be used in small amounts as a micronutrient; partially replace potassium in some plants, aid in operation of stomata, and increase the plants ability to absorb water. In large amounts, typically above fifty parts per million, sodium toxicity occurs, resulting in necrosis which may kill the plant; sodium deficiency poses no threat to the plant as it is not an essential…