Blogs

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 support@farmonaut.com.

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

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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.

Farming Blogs

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