Hydroponics: Definition, History, Types, and Scope in Indian Agriculture

A method of growing plants using mineral fertilizer solutions without soil is called Hydroponics (Greek words “hydro” for water and “ponos” for labour). Growing plants hydroponically necessitates controlling environmental variables such as light intensity and duration, temperature, humidity, pH of the solution/medium, and mineral nutrients. This is why it is also known as “controlled environment agriculture” (CEA). Hydroponics refers to the practice of growing plants without soil.

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Croton Mummy (Codiaeum variegatum): Introduction, Classification, Distribution, Characteristics, Toxicity, and, Uses

The sap from crotons, which are linked to euphorbias, can give sensitive persons skin rashes. If consumed, it can also upset the stomach and result in more severe symptoms if consumed in big quantities. Like with the majority of mild- to moderately hazardous houseplants, the plant’s pungent flavour typically deters animals and young children from consuming it. Always exercise caution while keeping indoor plants close to animals or youngsters.
Bark, roots, and leaves all produce deadly latex. 5-Deoxyingenol is the toxin present. The latex, when exposed repeatedly, produces eczema in gardeners while the bark and roots can result in mouth burns. Humans and domestic animals both employ exudates as purgatives, irritating the skin in the process (Bronson, 2005).

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Donkey’s tail (Sedum morganianum): Introduction, Discovery, Classification, Characteristics, and, Cultivation

Sedum is a genus comprising over 280 species in the northern hemisphere (North America, Europe, and Asia), and Sedum morganianum is without a doubt the most well-known and widely cultivated of the about 100 Sedum species Stephenson (1994) identified for Mexico. Sedum morganianum, also known as “Cola de borrego” or “Cola de burro” in Mexico, is also known as “Burro’s tail” or “Donkey’s tail” in English due to the long stems’ resemblance to an animal’s tail. A very popular plant for hanging baskets is the burro’s tail. Growing perfect specimens, however, may be quite a challenge because the lovely, pale green leaves fall off at the least touch. Fortunately, every removed leaf can quickly recover to create new plants. It makes an excellent basket plant for the garden, greenhouse, or windowsill thanks to its pendent habit of growth, which hangs vertically.
Donkey Tail is a Mexican native. For hanging baskets, it produces a beautiful succulent plant. The spindle-shaped leaves are formed in a silver-blue colour. Pendulous branches may reach 3 feet or more in baskets. The common name is derived from the plant’s growth pattern, which results in long, trailing stems that resemble ropes and are densely covered with leaves. It rarely blooms, but when it does, the flowers range in colour from pink to deep red. It grows nicely in a wall pot or a hanging basket and needs good drainage, some shade, and wind protection. This sedum is delicate and is frequently grown as a houseplant. This plant can be easily propagated by dropping a single leaf or a stem onto sandy soil. It only takes a few days for it to root and produce fresh “leaflets.”

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Forests our lifeline: Questions and Answers Chapter 8  for Class 7th  (CBSE/NCERT)

There are numerous ways to classify forests. The abiotic qualities of a region, such as its climate and soil, affect the type of forest there. Coniferous and broadleaved forests can be generically classified as forests in India. They can also be divided into groups according to the kind of trees they have, such as Mangroves, Xerophytes, Evergreen, Deciduous, or Thorn trees. They can also be divided into groups based on the most common tree species, such as Sal or Teak woods. A forest’s first three or four most prevalent tree species are frequently used as the name for the forest.
Coniferous forests: The Himalayan mountain range, where temperatures are low, supports coniferous woods. Tall, imposing trees in these forests have needle-like leaves and branches that slope downward to allow snow to slide off them.
Broad-leaved forests: There are various kinds of broad-leaved forests, including mangrove forests, thorn forests, deciduous forests, and evergreen forests. The majority of broad-leaved trees are situated in medium to lower latitudes and feature huge, diversely shaped leaves.
Evergreen forests: The Western Ghats, North Eastern India, and the Andaman and Nicobar Islands all have high rainfall regions where evergreen forests can be found. These woods flourish in regions with lengthy monsoon seasons.
Deciduous forests: Regions with seasonal rainfall that is mild and only lasts a few months are where you’ll find deciduous woodlands. These kinds of woodlands predominate in areas where teak trees flourish. During the sweltering summer and winter seasons, deciduous trees lose their leaves.
Thorn forests: The semi-arid parts of India are home to thorn forests. The sparsely spaced-out trees are bordered by wide-open, grassy regions.
Mangrove forests: Along the shore, mangrove forests are particularly abundant in river deltas. These plants have a special adaptation that allows them to flourish in both freshwater and saltwater. They flourish in muddy, silt-covered places that the rivers have deposited. The breathing roots of the mangrove plants protrude from the mud banks.

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COMPONENTS OF FOOD: Questions and Answers Chapter 2 for Class 6th (CBSE/NCERT)

Nutrients: Nutrients are the parts of food that provide energy and support growth. Carbohydrates, lipids, proteins, vitamins, and minerals are the primary nutrients in meals. Dietary fibres and water are also categorised as nutrient addition to these.
Malnutrition: Malnutrition is the ill condition of the body brought on by a deficiency in one or more nutrients.
Obesity: The excessive accumulation of fat in a person’s body causes it to be too heavy and bulky.
Scurvy: Scurvy is a condition brought on by a vitamin C deficiency. Gum swelling and bleeding, loosening of the teeth, joint pain, and general weakness are all signs of scurvy.
Anaemia: Anaemia is caused by a lack of iron in the diet. An anaemic person will exhibit the following symptoms: 1. Paleness; 2. Ease of fatigue; 3. Appetite loss; and 4. Weight loss.
Rickets: Rickets is caused by a vitamin D deficiency. A person deficient in vitamin D will exhibit the following symptoms: i. Softening and weakening of children’s bones; ii. Twisted or bow-legged legs; and iii. Delayed growth.

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TEACHER’S DAY: History, Date, Significance, and 2022 Theme

To celebrate the birth anniversary of Dr. Sarvepalli Radhakrishnan, Teachers’ Day is celebrated throughout India on September 5. He was a well-known academic, the first Vice-President and second President of independent India, and he was awarded the Bharat Ratna. His birthday is September 5, 1888. As an educator, he promoted enlightenment and was a renowned diplomat, academician, and most importantly, a fantastic teacher.
According to a proverb, a nation’s youngsters hold the key to its future, and teachers, in their capacity as mentors, can shape their charges into future leaders who will determine India’s course. They are essential to our lives because they help us succeed financially and professionally. They help us become better individuals, contributors to society, and ambassadors for our country. To recognise the difficulties, challenges, and unique responsibilities that teachers play in our lives, we commemorate Teacher’s Day.
On September 5th, India celebrates Teachers’ Day. Guru Purnima, an additional day in India honouring teachers, was observed on July 13, 2022, this year. The purpose of this holiday is to recognise the influence and contribution of teachers in the lives of their students. Teachers are just as important in a student’s life as parents and other adults because they are charged with teaching them academics as well as morals and values. The most significant and, in some cases, the very first role models or sources of inspiration in their lives are their instructors. This emphasises how significant it is to observe Teacher’s Day. In India, the teacher-student connection has also been exceedingly reverent and respectful since ancient times, which enhances the festivities even more.

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Cock’s comb plant: Introduction, Classification, History, Description, Cultivation, Phytochemical Constituents, Traditional Uses, and Pharmacological Action

A member of the genus Celosia, Celosia cristata [Celosia in Greek means burning] is also known as cockscomb because the blossom resembles the head of a rooster (cock). China refers to it as Chi Kuan. It is a member of the family Amaranthaceae, class Magnoliopsida, and order Caryophyllales. Many members of this family of plants are valued as ornamental plants because of their eye-catching inflorescences. Numerous medical features of the plant with promising activity are also known, in addition to its growing landscape. The plant with a strong medicinal effect is mentioned in Chinese herbal treatments as well as Indian Ayurveda. Commonly known as cockscomb, this plant is used to treat a variety of conditions, including hematemesis, abnormal uterine bleeding, hematochezia, hemorrhoidal bleeding, leukorrhea, chronic dysentery with persistent diarrhoea, redness of the eye and dizziness caused by excessive heat or fire in the liver, nebula with blurred vision, and more. The decoction of the entire herb is the best approach to using the plant for therapy according to conventional practice. Some people compare the Cockscomb blossoms’ dense, velvety texture to brain matter. The plume kinds are planted more frequently because of their fluffier, lighter, airier texture that blows freely in a breeze.

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Peace Lily: Introduction, Classification, Native Habitat, Characteristics, Pathological Problems, Utilization, and Care

The Peace lily is one of the more popular tropical indoor plants in the United States. Spathiphyllum is its official botanical name. One of the most common interior-design plants in the country, Spathiphyllum is named after the Greek word for the flowers’ spathe-like leaves. It is also known to be effective at removing formaldehyde, benzene, and other pollutants from indoor environments. It is frequently observed in houses and businesses, where the indirect light makes it grow wonderfully. The Peace Lily is not a lily; it was merely comparable to the white lily historically. Many people equate peace, innocence, and purity with peace lilies. However, others in the new age movement assert that they resolve problems and combat negativity. Regardless of what someone may claim, we can all agree that they provide beauty and aesthetic appeal to any space.

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Rubber Plant: Aspects of Biology for yield Production

Laticifers
The outermost bark layers of rubber trees are methodically removed to collect latex. The interior soft zone (nearer to the cambium) and the external hard zone are two separate layers that make up the anatomical organization of the bark structure of Hevea, According to Gomez (1981) and MRB (2005) (stone cells and cork). Laticifers are successively formed in the cambium region of Hevea, where they develop mostly in the soft bark layer where latex is created. The bark surface and various laticifers in Hevea species were, however, poorly described in earlier research by rubber plant breeders (Frey-Wyssling, 1930, RRIM, 1957; RRIM, 1963, RRIM, 1994). According to theories, the laticifers’ roles include latex manufacturing, physiological functions, cellulose content creation, insect defense, and participation in a transportation pathway (Pakianathan et al., 1989; Kutchan, 2005; Pickard, 2008; Konno, 2011). The rubber tree’s laticifers are described by Esau (1965) and Shamsul Bahri (2000) as a collection of articulated fused cells that support latex and form systems that infiltrate the body of the plant via numerous tissues. Other plant species, such as the papaver and Lactuca (lettuce) species, are part of similar laticifer systems. However, non-articulated laticifers, which are laticifers that are not fused, are created from individual cells and grow into branching or unbranched tube-like structures (de Fay and Jacob, 1989; Shamsul Bahri, 2000; Hagel et al., 2008).

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Rubber Plant: Introduction, Classification, Morphological Characters, Growing season, and Uses

The Rubber tree is native to South American rain forests, and it is typically found in tropical regions close to the equator. Brazil, Bolivia, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname, and Venezuela are all countries in South America where rubber trees can be found. The conspicuous trifoliate leaves, separate male and female flowers generated at the same inflorescence, and a trilocular capsule fruit pod that contains three seeds, which contain latex in nearly every part of the tree, are characteristics of rubber trees. Five years after planting, they start to flower, although they rarely open at the same time, which promotes cross-pollination. Rubber tree latex has various advantages that make it a valuable raw resource for numerous goods. The inner bark of a rubber tree contains a cluster of particular cells known as laticifers, or latex vessels, which are harvested to produce latex by slicing through the outer layers of the bark structure. Multiple unique soft and hard layers combine to generate the bark structure. The laticifers that finally give rise to rows of cells as concentric cylinders of parenchyma tissues and tube cells are known as soft bark. Within this species, the bark thickness varies, and the surface colour ranges from reddish purple to dark purple and from pale brown to brown. Young rubber trees occasionally even have a brown-green striped bark. The size of the seeds varies, but they typically exhibit dark brown or grey-brown mottling. Additionally, this species produces thick, green fruit capsules with three lobes and seeds.

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