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Hairy Caterpillars

Hairy caterpillars

EUPROCTIS FRATERNA

Factors – 

a- Defoliation of the mango trees caused by reddish brown, hairy larvae with single tufts on each end.

b- Young pupil larvae are covered with whitish hair.

c- The moth is bright yellow with darker lines and black dots on forewings.

Hosting body – MANGO

Identifiable traits

In the early stage of hairy caterpillars have long white hairs coming from the flanks of their body. Their main feed is leaves of mango trees in groups and several other tree species.

The developed/mature larvae feature a red head covered with white hair and a reddish brown body. Larvae pupate in a cocoon of hairs on branches and leaves and also have a single tuft in the head. The moths are bright yellow and has forewings with transversal lines which are dark and black dots near the edge of wings.

 

Inducing factors

They are similar to two species of caterpillars with similar features which damages leaves and defoliation. The females lay yellow, circular, flat eggs in clusters on the lower surface of leaves. Their laid eggs are suspicious because they are covered with yellow brown hair and scales over them. These larvae hatch generally between 4-10 days. They feed for about 13 to 29 days on tree leaves until they convert to a cocoon. In between 9-25 days in a silk cocoon the adult moth hatches. During winter season the larvae may perform dormancy.

Organic remedies

Burning torches can be used to terminate/decimate them as they feed in tight groups. Sprays of neem (Azadirachta indica L.) and dhatura (datura stramonium L.) extracts controls caterpillar populations and reduces it. The bacterium Bacillus thuringiensis is a microbial pesticide which kills the caterpillar by crippling the gut.

Chemical remedies

If available, always consider an integrated approach with preventive measures together with biological treatments. Insecticide sprays containing cyphermethrin, deltamethrin, fluvalinat are effective against hairy caterpillars.

Extra remedies

Regular monitoring of the orchard for eggs, larvae, moths and cocoons. Find, collect and destroy the caterpillars, cocoons and egg clusters in minor cases. Adult moths can be controlled using light traps.

 

 

We will keep posting about any such informative information on to our blogs, to help as many people as possible. Farmonaut is built upon a vision to bridge the technological gap between farmers and strives to bring state-of-the-art technologies in the hands of each and every farmer. For any queries/suggestions, please contact us at [email protected]

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American Bollworm

American bollworm has been identified to attack more than 180 host plants. These host plants include beans, maize, tomato, legumes etc. It has caused so much damage to the fields and has developed resistance to so many insectides that it has been popularly given the name of a global pest.

In the moth phase they are brownish yellow in color with a black spot on the fore wings and a broad black patch on the margin of the hind wing. Larvae are green when they are young and their color varies when the larvae grows in size. The eggs are laid only singly on the leaves and are white in color.

They hatch in a time span of 3 to 4 days. The new larvae feed on the leaves after hatching and attach the near by bolls by keeping half of the body inside the bolls and half of its body outside.

The larval period is of around 25 days long whereas the pupal period is around 10 days long. 

Some of the damage symptoms are as follows:

The squares which are affected by the American bollworm shows flaring up with its brackets spread out.

Holes can be seen on the squares by the internal tissues which are being fed by the larval and hollowed by it.

We will keep posting about any such informative information on to our blogs, to help as many people as possible. Farmonaut is built upon a vision to bridge the technological gap between farmers and strives to bring state-of-the-art technologies in the hands of each and every farmer. For any queries/suggestions, please contact us at [email protected]

We have some more interesting articles coming up soon. Stay tuned!

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Satellite Imagery Samples: https://farmonaut.com/satellite-imagery-samples

Why Farmonaut's Database is One of the Most Trusted Database

Farmonaut always strives to think from a farmer’s perspective to keep building the right solutions for the community. One of such steps is the development of Farmonaut Database. We have collected farming data from different government approved sources, analyzed them and refined it to bring the best formatted information available to the farmers.

The government database is a result of rigorous research of several years which includes information about what insecticide, pesticide, and/or plant growth regulator should be used for a given crop. However, the database is openly available in the format of a huge document file with hundreds of pages.  It is really unreasonable to expect a farmer to download this large document and scroll through hundreds of pages to identify what the potential problem is with their crop.

Thus, the first thing we did is to sanitize this government approved database, and present it to the farmers in a user-friendly manner.

The segregated database is accessible through our android app and contains government approved information about 100+ crops, 300+ problems and 150+ chemicals (pesticides, insecticides, plant growth regulators etc.). The database includes very specific details of chemical usage such as Quantity, Formulation (g/ml)% and Dilution in water (L).

The Farmonaut database is presented in a fairly accessible form. A farmer can simply click on whether they want to check the information about a crop, a disease/problem or a government approved chemical.

If a farmer clicks on the “Crops” button and selects a crop from the given list of 100+ crops, he/she can see what government approved solutions they should be using if a certain disease/problem outbreaks in their farming field. For example, if a farmer selects Apple from the given list of crops, the database will show that if the apple crop has the problem of scab, they can use chemicals like: Captan 50% WG, Captan 75% WP,  Copper Hydroxide 77% WP, Difenoconazole 25% EC) etc. with their specific details like Quantity, Formulation (g/ml)% and Dilution in water (L) etc.. Similarly, if the apple crop has the problem of Powdery Mildew, they can use chemicals like: Lime Sulphur 22% SC, Sulphut 80% WP etc. with their given specific details.

If a farmer clicks on the “Identified Issues” button and selects a problem/disease from the given list of 300+ problems, he/she can see what government approved solutions they should be using if that disease outbreaks in the given list of crops. For, example, if a farmer selects Black Rot from the given list of 300+ problems/diseases, the database will show that if black rot occurs in Coffee, then they can use Copper Oxychloride 50% WG with the given specific details. Similarly, if black rot occurs in Apple, then they can use Zineb 75% WP with the given specific details.

If a farmer clicks on the “Chemicals” button and selects a chemical from the given list of 150+ government approved chemicals (pesticides, insecticides, plant growth regulators etc.), he/she can see what different crops and different diseases can this chemical be used for. For example, if a farmer selects Zineb 75% WP from the given list of 150+ chemicals, they can see that Zineb 75% WP can be used in Jowar for Red Leaf Spot, Leaf Spot and Leaf Blight with the given specific details accordingly. Similarly, it will also show that Zineb 75% WP can also be in Wheat for Blight and Rust with the given specific details.

The Farmonaut database also gives a farmer an option to upvote the given government approved solution. By doing so, Farmonaut ensures another layer of trust on the provided sanitized database. Furthermore, a farmer can also share the database information on to Farmonaut Discussion Forum and several other Social media networks of their choice. A farmer can also save this information locally to his account for a quicker access through their profile.

 

 

At Farmonaut, we jumped one step ahead and added another layer of user friendliness to access our database. We have designed a system which is capable of identifying potential problems with a farmer’s crop just by their voice or text explanation. Read the following article to know in-depth about the Voice-Text Based Crop Issue Identification System.

https://farmonaut.com/blogs/farming-blogs/voice-text-based-crop-issue-identification/

The app is available for android on Google PlayStore: 

https://play.google.com/store/apps/details?id=com.farmonaut.android

We will keep posting about any such informative information on to our blogs, to help as many people as possible. Farmonaut is built upon a vision to bridge the technological gap between farmers and strives to bring state-of-the-art technologies in the hands of each and every farmer. For any queries/suggestions, please contact us at [email protected]

We have some more interesting articles coming up soon. Stay tuned!

Wait!!

Before that…

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AppLink: https://play.google.com/store/apps/details?id=com.farmonaut.android

Website: https://farmonaut.com

Satellite Imagery: https://farmonaut.com/satellite-imagery

Satellite Imagery Samples: https://farmonaut.com/satellite-imagery-samples

Voice-Text Based Crop Issue Identification

In India, several thousand tonnes of crop gets destroyed every year due to incorrect usage of pesticides, insecticides, plant growth regulators etc. Whenever there is a disease outbreak in a farmer’s field, the first person whom they usually look forward to is the local vendor from whom they purchase their farming products like seeds, spraying equipments etc. In India, officially you need to have at least a certain relevant degree before you can start your own fertilizer shop. However, these norms are hardly practiced.

These local vendors have their own interest in mind, since they need to sell the products of the companies from whom they purchase the chemicals in bulk.  Thus, more often than not, with no practical scientific knowledge, they end up suggesting completely incorrect solutions to the farmer.

 

One of the major aims of Farmonaut is to help farmers figure out what the problem is with their crop, and also provide government approved solutions for the problems identified by our system. Though the government has released a scientifically approved database, however the database is highly user inaccessible. The government database is in the form of document file of hundreds of pages. It is really unreasonable to expect a farmer to download this large document and scroll through hundreds of pages to identify what the potential problem is with their crop. At Farmonaut, the first thing we did is to sanitize this government approved database, and present it to the farmers in a user-friendly form.

The segregated database is accessible through our android app and contains government approved information about 100+ crops, 300+ problems and 150+ chemicals (pesticides, insecticides, plant growth regulators etc.). The database includes very specific details of chemical usage such as Quantity, Formulation (g/ml)% and Dilution in water (L).

Read the following article to know in-depth about the Farmonaut Database:

https://farmonaut.com/blogs/farming-blogs/why-farmonaut-database-is-one-of-the-most-trusted-database/

At Farmonaut, we jumped one step ahead and added another layer of user friendliness to access our database. We have designed a system which is capable of identifying potential problems with a farmer’s crop by just their voice or text explanation.

The voice-text based crop issue identification system is available on our Android app. A farmer can simply explain what issues he/she is facing with his crop and our system in real-time will identify the potential problem with the crop as well as the government approved solutions attached with the results as well. Given the vastness of India and a large number of languages being spoken in the Indian subcontinent, we can not expect our system to work only in one specific language. Hence, we have created our system to work in more than 50 languages. The farmers can ask their problems in a language of their choice and can still get government approved solutions in real time.

The following section below shows a few examples of how Farmonaut’s voice-text based crop issue identification system works.

The Voice-text based crop issue identification system works as a chat bot, wherein farmers can ask for the solution to their problems just like someone will message another user on a messaging service. The farmer can simply type their query into the text box or can speak about their query by clicking on the speech button. Once the speech of the farmer is finished or if farmer clicks on the send button after his text information about the problem is ready, the system will process their speech/text to identify the crop as well the problem being faced by the farmer. Upon correct identification of the problem, the system will return all the government approved solutions from which the farmer can select one of his choice.

For example, in the case above, the Farmer has asked in hindi the following query:

Asked Query: आम की फसल की उपज बढ़ाने के कुछ उपाय बताइये| अभी एकदम नयी फसल है|

Our system identifies within seconds that the user is looking for ways to enhance yield of their mango crop and hence, provides all the government approved solutions to the user about chemicals measures to be used to enhance the yield of his/her mango produce.

Some other examples of the Voice-text Based Crop Issue Identification queries are listed below.

There may be times when the voice-text based crop issue identification system is not able to identify the problem properly. There are 4 such cases which we want to highlight.

Case 1:

When our system has correctly identified the crop as well as the problem being faced by the crop, the system still gives the farmer an option to post his query on to the discussion forum to further proof check about his problem from the community.

Case 2: 

When our system has correctly identified the crop of the query but not problem, the farmer can post this unsuccessful query onto the discussion forum to get remedies from the farming community itself.

Case 3:

When our system has not been able to identify both crop as well as the problem, and if the farmer feels that his/her query was correct, they can post this voice-text crop issue identification query on to the discussion forum to get remedies from the farming community.

A detailed article about the discussion forum and Farmonaut database will be available soon.

The app is available for android on Google PlayStore: 

https://play.google.com/store/apps/details?id=com.farmonaut.android

We will keep posting about any such informative information on to our blogs, to help as many people as possible. Farmonaut is built upon a vision to bridge the technological gap between farmers and strives to bring state-of-the-art technologies in the hands of each and every farmer. For any queries/suggestions, please contact us at [email protected]

We have some more interesting articles coming up soon. Stay tuned!

Wait!!

Before that…

Follow us at:

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Tumblr: https://farmonaut.tumblr.com/

Youtube: https://www.youtube.com/channel/UCYWOOPPKATLgh4L6YRlYFOQ

AppLink: https://play.google.com/store/apps/details?id=com.farmonaut.android

Website: https://farmonaut.com

Satellite Imagery: https://farmonaut.com/satellite-imagery

Satellite Imagery Samples: https://farmonaut.com/satellite-imagery-samples

Normalized Difference Vegetation Index - NDVI

It has been quite a long time since scientists and agronomists are using Normalized Difference Vegetation Index (NDVI) to monitor and examine health of crops. The extent and benefits of NDVI have increased manifold with so many earth mapping satellites being launched every year to monitor earth’s surface in different wavelengths.

To calculated NDVI index, we need imagery from two different wavelengths, namely Near Infrared and Red band imagery. And the NDVI ratio is calculated as:

NDVI = (NIR – RED)/(NIR + RED)

From this formula, it is apparent that the density of vegetation (NDVI) at a given point in the generated image is equal to the difference in the intensities of reflected light in the red and infrared range divided by the sum of these two intensities.

 

farmonaut_ndvi2

The value of the NDVI index can range from -1.0 to 1.0. 

  • The negative NDVI values are mainly due to clouds, snow and water. 
  • The values of NDVI close to zero are mainly due to rocks and bare soil. 
  • NDVI values ranging from 0 to 0.1 correspond to sand, snow or empty areas of rocks. 
  • NDVI values ranging from 0.2 to 0.3 represent shrubs and meadows, and
  • NDVI values ranging from 0.6 to 0.8 indicate tropical and temperate forests.
In simple words, NDVI measures status of plant health based on how plants reflect light at certain frequencies. Though we cannot perceive it with our eyes, everything around us (including plants) reflect wavelengths of light in visible and non-visible spectrum. Taking into account how much amount of a certain wavelength is reflected, we can access the current status of plants. 

We know that plants have chlorophyll which absorb sunlight for photosynthesis .Chlorophyll immensely absorbs visible light (0.4 to 0.7 microns) for photosynthesis, whereas structure of cells of leaves immensely reflect near-infrared light (0.7 to 1.1 microns). If a plant is healthy, it will have large amount of chlorophyll on it’s leaves and will absorb good amount of visible light from 0.4 to 0.7 microns and reflect quite less of it and vice-versa. 

Farmonaut’s Crop Health Monitoring system is provided to farmers and monitors how much sunlight is reflected by the plants. We take into account this basic principle in identifying crop health status of an agricultural land.

For research purposes (non-farming usage), Farmonaut provides access to satellite imagery of any place around the through our android app.

For agricultural purposes, Farmonaut provides satellite based crop health monitoring system on our android app, through which farmers can select their field and identify the regions of the field at which the crop growth is not normal. Upon identifying that region of their fields, they can simply pay a visit to that part of the field and identify if the problem has already started. If it has not, the farmer can take preventive remedies by applying more fertilizers, plant growth regulators etc. If the problem has already started, they can simply explain their problem to Farmonaut’s crop issue identification system and get real-time govt. approved remedies. The satellite imagery is updated every 2-5 days and has a resolution of 10 meters which is 2 times better than google maps in rural India.

The app is available for android on Google PlayStore: 

https://play.google.com/store/apps/details?id=com.farmonaut.android

We will keep posting about any such informative information on to our blogs, to help as many people as possible. Farmonaut is built upon a vision to bridge the technological gap between farmers and strives to bring state-of-the-art technologies in the hands of each and every farmer. For any queries/suggestions, please contact us at [email protected]

We have some more interesting articles coming up soon. Stay tuned!

Wait!!

Before that…

Follow us at:

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LinkedIn: https://www.linkedin.com/company/farmonaut/

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Tumblr: https://farmonaut.tumblr.com/

Youtube: https://www.youtube.com/channel/UCYWOOPPKATLgh4L6YRlYFOQ

AppLink: https://play.google.com/store/apps/details?id=com.farmonaut.android

Website: https://farmonaut.com

Satellite Imagery: https://farmonaut.com/satellite-imagery

Satellite Imagery Samples: https://farmonaut.com/satellite-imagery-samples

Aphids

Aphids basically belong to Aphidoidea Family. They are small sap-sucking  insects like greenfly and blackfly.  However, they are not harmful to crops in early stage or in small or moderate numbers. Aphid’s infest severe damage to leaves and shoots and also causes damage to plant growth.

They bring additional infections as their honeydew secrete and also transmit viruses from one plant to another over a prolonged period.

Hosts: Aphids has a vast list of plants which it affects. Few of them are Almond, apple, cabbage, cotton, garlic, grape, lettuce, maize, mango, millet etc.

They are very small in size (0.5 mm to 2 mm) and delicate bodied insects with long legs and antennae. They are found in multiple colours like brown, yellow, red or black depending on which species they belong to. They grow underside clusters of young leaves and shoot tips. They suck out fluids from the tissues with the help of their long mouth parts to tender them. 

In late spring or early summer, their invasion slows down as their population diminishes naturally due to climate change and increase in natural enemies. Several other species carry plant viruses which can lead to the development of other forms of diseases.

Biological remedies

Few predators are there which can help in controlling the population of aphids are ladybugs, lacewings, soldier beetles and parasitoid wasps. These natural killers of aphids will take care of the sucking insects in field conditions. You can use soft insecticidal soap solution or solutions depending on plant oils in case of mild infestation. Aphids are very sensitive to fungal diseases when it is humid around them. A simple spray of water can remove them from infected plants.

 

 

 

 

Chemical methods of control

Always try to consider biological treatments if available instead of approaching for chemical solutions straightaway. Stem application with flonicamid and water @ 1:20 ratio at 30, 45, 60 days after sowing (DAS) can be planned.  

Fipronil 2ml or thiamethoxam @ 0.2g or flonicamid @ 0.3g or acetamiprid @ 0.2g (per liter of water) can also be used as chemical composition in prevention against aphids.

We will keep posting about any such informative information on to our blogs, to help as many people as possible. Farmonaut is built upon a vision to bridge the technological gap between farmers and strives to bring state-of-the-art technologies in the hands of each and every farmer. For any queries/suggestions, please contact us at [email protected]

We have some more interesting articles coming up soon. Stay tuned!

Wait!!

Before that…

Follow us at:

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Instagram: https://instagram.com/farmonaut

Twitter: https://twitter.com/farmonaut

LinkedIn: https://www.linkedin.com/company/farmonaut/

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Tumblr: https://farmonaut.tumblr.com/

Youtube: https://www.youtube.com/channel/UCYWOOPPKATLgh4L6YRlYFOQ

AppLink: https://play.google.com/store/apps/details?id=com.farmonaut.android

Website: https://farmonaut.com

Satellite Imagery: https://farmonaut.com/satellite-imagery

Satellite Imagery Samples: https://farmonaut.com/satellite-imagery-samples

Remote Sensing Blogs

NDVI-15-feb

Normalized Difference Vegetation Index - NDVI

It has been quite a long time since scientists and agronomists are using Normalized Difference Vegetation Index (NDVI) to monitor and examine health of crops. The extent and benefits of NDVI have increased manifold with so many earth mapping satellites being launched every year to monitor earth’s surface in different wavelengths.

Since water absorbs and scatters light, oceans and lakes tend to look dark or lack detail on True color satellite images, especially in the murky waters near coastlines. Coastal Aerosol (B1) imagery allows for coastal water and ocean color observation, as it reflects blues and violets, and displays subtle differences in the color of water.

The Red Edge band is located between the Red band (B4) and the NIR band (B8), without overlap. In a typical spectral response of green vegetation, the Red Edge band covers the portion of the spectrum where reflectance drastically increases from the red towards the NIR regions.

Near Infrared images can help us identify and monitor a plant’s health. At Farmonaut, we have developed our own Crop Health Monitoring system which processes Near Infrared Imagery in combination with several other spectral images to provide a health color-map of an agricultural land.

A tsunami swept across Indonesia’s islands of Sumatra and Java the night of December 22, just before 9:30 p.m. local time. There was no notice for the wall of water, which left devastation in its wake. At least 400 are confirmed to be dead and more than 800 are injured. Because of such a large impact of this event, we wanted to analyze the extent of devastation in the coastal region of the affected areas.

To understand how the condition of lakes change over a course of a year, we shifted our focus to some of the famous lakes in India. Udaipur is known for its beautiful lakes, so we decided to analyze four famous lakes of udaipur, namely: Dudh Talai, Lake Pichola, Swaroop Sagar and, Fateh Sagar Lake.

We mapped Mount Veniaminof’s volcanic activity using the short wave infrared satellite imagery accessed through our system. Recently, Mount Veniaminof had been in the news for it’s extreme volcanic activity wherein it ended up spewing ash as high as three miles in the air. The activity was so intense, that the region near it was declared as a no-fly zone.

The spread and extent of fire in California is massive and devastating. So, we decide to have a look on the imagery of the last month. The spread and extent of fire in California is massive and devastating. So, we decide to have a look on the imagery of the last month over a region in California and have created a Time Lapse of the same.

Farmonaut provides satellite based crop health monitoring system, through which farmers can select their field and identify the regions of the field at which the crop growth is not normal. Upon identifying that region of their fields, they can simply pay a visit to that part of the field and identify if the problem has already started. If it has not, the farmer can take preventive remedies by applying more fertilizers, plant growth regulators etc. If the problem has already started, they can simply explain their problem to Farmonaut’s crop issue identification system and get real-time govt. approved remedies.

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