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Monday, July 6, 2020

What are some cool facts about dragonflies?



Dragonflies are insects that have long bodies, transparent wings, and large eyes. There are over 5,000 species of dragonflies that are part of the scientific infraorder called Anisoptera. Because dragonflies are insects they have 6 legs, a thorax, a head, and an abdomen. The abdomen is long and segmented. Despite having 6 legs, the dragonfly doesn't walk very well. It is a great flyer, however. Dragonflies can hover in one place, fly extremely fast, and even fly backwards. They are some of the fastest flying insects in the world reaching speeds of over 30 miles per hour.

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Dragonflies come in a variety of colors including blue, green, yellow, and red. They are some of the most colorful insects on the planet. They also come in a range of sizes from half an inch long to over 5 inches long. Where do dragonflies live? Dragonflies live throughout the world. They like to live in warm climates and near the water. What do they eat? One of the best things about dragonflies is that they like to eat mosquitoes and gnats. They are carnivores and eat all types of other insects too including cicadas, flies, and even other smaller dragonflies. To catch their prey, dragonflies create a basket with their legs. They then swoop in capturing their prey with their legs and biting it to hold it in place. They will often eat what they have caught while they are still flying. In order to see predators and their food dragonflies have large compound eyes. These eyes are made up of thousands of smaller eyes and allow the dragonfly to see in all directions. Fun Facts About Dragonflies Dragonflies don't sting and generally don't bite people. They have been around for 300 million years. Prehistoric dragonflies were much larger and could have a wingspan of 2 ½ feet! When first hatched, the larva or nymphs live in the water for around a year. Once they leave the water and begin to fly, they only live for around a month. People in Indonesia like to eat them for a snack. Having a dragonfly land on your head is considered good luck. They are not really related to common flies. Groups of dragonflies are called swarms. Watching dragonflies, similar to bird watching, is called oding which comes from the order classification odonata. Predators that eat dragonflies include fish, ducks, birds, and water beetles. They need to warm up in the sun during the morning before taking off and flying for most of the day.

Dragonflies come in a variety of colors including blue, green, yellow, and red. They are some of the most colorful insects on the planet. They also come in a range of sizes from half an inch long to over 5 inches long. Where do dragonflies live? Dragonflies live throughout the world. They like to live in warm climates and near the water. What do they eat? One of the best things about dragonflies is that they like to eat mosquitoes and gnats. They are carnivores and eat all types of other insects too including cicadas, flies, and even other smaller dragonflies. To catch their prey, dragonflies create a basket with their legs. They then swoop in capturing their prey with their legs and biting it to hold it in place. They will often eat what they have caught while they are still flying. In order to see predators and their food dragonflies have large compound eyes. These eyes are made up of thousands of smaller eyes and allow the dragonfly to see in all directions. Fun Facts About Dragonflies Dragonflies don't sting and generally don't bite people. They have been around for 300 million years. Prehistoric dragonflies were much larger and could have a wingspan of 2 ½ feet! When first hatched, the larva or nymphs live in the water for around a year. Once they leave the water and begin to fly, they only live for around a month. People in Indonesia like to eat them for a snack. Having a dragonfly land on your head is considered good luck. They are not really related to common flies. Groups of dragonflies are called swarms. Watching dragonflies, similar to bird watching, is called oding which comes from the order classification odonata. Predators that eat dragonflies include fish, ducks, birds, and water beetles. They need to warm up in the sun during the morning before taking off and flying for most of the day.


Wednesday, July 1, 2020

What does Rice look like when it's ready to harvest?

Once the grains are no longer green, and have started to bow down from their weight, the rice is ready to harvest.

The crop should be cut when 80−85% of the grains are straw (i.e., yellow-colored). Generally, the ideal harvest time lies between 130 and 136 days after sowing for late, 113 and 125 for medium, and 110 days for early-maturing varieties. For dry season harvesting, an optimum time is 28 to 35 days after heading. Source: www.quora. com

When to harvest
harvestWhat is harvesting?
Harvesting is the process of collecting the mature rice crop from the field. Harvesting of paddy includes cutting, stacking, handling, threshing, cleaning and hauling. Good harvesting methods maximize grain yield and minimize grain damage and quality deterioration. Harvesting can be done manually using sickles and knives or mechanically with the use of threshers or combine harvesters.

Why is it important to know when to harvest
Correct timing of harvest is crucial to crop loss prevention. Grain losses may occur caused by rats, birds, lodging, insects, and shattering. Timely harvesting ensures good grain quality and high market value.

Harvesting too early will result in a higher percentage of unfilled or immature grains, which will lower the yield and cause higher grain breakage during milling. Harvesting too late will lead to excessive losses and increased breakage in rice. Harvest time also affects the germination potential of rice seed.

How do we determine when to harvest?
There are different ways to determine the correct harvest time:

Moisture content
Grain moisture content ideally is between 20−25% (wet basis). Grains should be firm but not brittle when squeezed between the teeth.

Ripe grains per panicle
The crop should be cut when 80−85% of the grains are straw (i.e., yellow-colored).

Number of days after sowing
Generally, the ideal harvest time lies between 130 and 136 days after sowing for late, 113 and 125 for medium, and 110 days for early-maturing varieties.

Number of days after heading
For dry season harvesting, an optimum time is 28 to 35 days after heading. In wet season harvest, optimum time is 32 to 38 days after heading.

Other considerations
Harvesting also needs to be timed so that threshing can be done as soon as possible after cutting to avoid rewetting and to reduce grain breakage.

If the crop has a lot of surface moisture, (e.g. from previous rainfall or early in the morning), it is advisable to wait until the surface moisture dries off.
Source: www. knowledgebank.irri. org
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