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Blister Blight of tea What is the causal organism of blister blight of Tea? Fungus called Exobasidium vexans What are the symptoms of blister blight of Tea? Folowing are the symptoms of blister blight of tea 1. Small pale or pinkish circular spots appear on leaves and attain a size of 2.5 cm diameter 2. The spots in the upper surface of the leaf becomes light brown in color and depressed while in under surface of leaf it bulges farming a blister like swelling 3. Lower budget portion is covered with a white powdery growth of fungus 4. When many […]

Weeds are a menace in agriculture and if the weed population is unchecked then they can result in huge economic losses. There are various ways to control weeds but as the weeds are controlled, they may show weed shifts and weed resistances. What is a WEED SHIFT? A weed shift is the change in the composition or relative frequencies of weeds in a weed population or community in response to natural or human-made environmental changes in an agricultural system Here populations refers to all individuals of a single species in a defined area And community refers to all plant populations […]

Tobacco Cultivation – Instant Info What is the significance of tobacco? Tobacco contains chemical called Nicotine Human brain becomes highly addicted to Nicotine easily Tobacco is the leading cause for many types of cancers and other cardiovascular and respiratory diseases According to WHO, Every year, more than 8 million people die from tobacco use Tobacco can also be deadly for non-smokers too who intake tobacco by passive smoking Passive smoking or second hand smoking during pregnancy can lead to several life long adverse health conditions for babies Heated tobacco products (HTPs) contain tobacco and expose users to toxic emissions, many […]

  Seed treatment Seed treatment refers to the application of 1. fungicide, 2. insecticide or 3. both to the seeds to disinfect and disinfest them from seed borne or soil borne pathogenic organisms and storage insects Disinfection here refers to the deep seated pathogens Disinfestation refers to the pathogens outside the seed coat Seed treatment also includes exposing the seeds to sun or washing or immersing them in water Benefits of seed treatment Prevention of spread of plant diseases – both systemic and non-systemic plant diseases can be prevented by seed treatment Examples – systemic diseases like smut of wheat, […]

  Seed Drying Seed Drying means Lowering down the seed moisture content to safe moisture limits Seed drying is very important in order to maintain seed viability and vigor Moisture in seeds may deteriorate fast due to mold growth and increased micro-organism activity You may also like to read – Crops and recommended seed rates | Agristudent.com Seed Certification Agency | Agristudent.com Brinjal Seed production | Agristudent.com Seed and Seed Industry in india | Agristudent.com Methods of seed drying 1. Sun drying 2. Forced air drying – 1. Natural air drying 2. Drying with supplemental heat 3. Heated Air drying […]

Brinjal Seed Production Botany Brinjal is often cross pollinated crop Brinjal flower opens mainly in morning and A few flower open at 16 hr Anther dehiscence occurs 15‑20 minutes after flowers have opened The period of receptivity ranges from a day prior to flower opening to 4 days after opening Brinjal produces 4 types of flowers with different style length 1. Long style, 2. short style, 3. medium style and 4. pseudo short style For seed production and better yield, the long and medium style is desirable To increase the production of long and medium style application of more nitrogen […]

Seed production in Tomato Botany of tomato Tomato is a typical day neutral plant It requires temperature of 15‑20° C for fruit setting Tomato is self pollinated crop Self fertilization is favoured by the position of receptive stigma within the cone anthers and the normal pendant position of the flower Method of seed production Seed to Seed  Stages of seed production  1st stage – Breeder seed 2nd stage – Foundation Seed I 3rd stage – Foundation Seed II 4th stage – Certified Seed You may also like to read our article on tomato cultivation   Isolation requirement Tomato is predominantly […]

Vanilla cultivation   What is Vanilla? Vanilla is a perennial climber cultivated as a precious spice crop. It is a precious spice in the market like saffron. The pleasant flavour of vanilla due its natural Vanillin which makes it so valuable. The botanical name of vanilla is Vanilla plantifolia and belongs to the family Orchidaceae. The origin of vanilla is believed to be Mexico and it was introduced into India in the nineteenth century What are the major countries and states producing vanilla? The major production of vanilla comes from Madagascar, Indonasia, China, New guinea, Mexico, Turkey and Uganda. In […]

Aloe vera cultivation What are the uses of Aloe vera? Best for skin treatments. Juice of aloe vera cures chronic constipation and acidity. Its juice is anti fungal, anti bacterial and disinfectant.Juice of aloe vera helps to boost the immune system. It helps in body detoxification What are the characterisitics of Aloe vera plant? It is a perennial herb. Does not have a true stem. It has tuberous root system. It is male sterile plant so does not produce many viable seeds Which is the variety of Aloe vera commonly grown? Aloe vera variety chinensis is a commonly grown variety. […]

Senna cultivation What is Senna? Senna is commonly known as Sonamukhi, swarna patri, nilavakari, Indian senna, tinevelly senna. The botanical name of senna is Cassia augustifolia and belongs to family Leguminoseae. The plant parts of senna which are useful are pods and leaves They contain sennosides A, B, C, D which are well known for the preparation of laxatives and purgatives all over the world The country which leads the production of senna in the world is India. Of the total senna prodhction, almost 99 percent is exported. Major exports of senna from India go to UK What are characteristics […]