Brown planthopper’s deadly attack on rice!

It is said that the word rice is derived from the old French word ‘ris’ Untitledwhich in turn has its origin Italian, Latin and Greek. Whatever be the origin of the word, it is one of the major staple for a large part of the world’s human population, especially in Asia. It is the agricultural commodity with the third-highest worldwide production, after sugarcane and maize, according to data of FAOSTAT 2012.

Being the major staple food of most of the people, the impact is downloadharder on the population due to the shortage of the rice. One of the dangers that befall the rice food leading to its shortage is attack by pests. Brown planthoper is a major rice pest which causes extensive damage and losses. Being distributed across Australia, Bangladesh, Bhutan, Burma (Myanmar), Cambodia, China, Fiji, India, Indonesia, Japan, North and South Korea, Laos, Malaysia, Nepal, Pakistan, Papua New Guinea, Philippines, Sri Lanka, Taiwan, Thailand, and Vietnam; the brown planthopper causes upto 60% yield loss. Their host plant other than rice is Leersia hexandra. They damage rice directly through feeding and also by transmitting two viruses, rice ragged stunt virus and grassy stunt virus.

imagesAdults and nymph suck the phloem sap leading to hopper burn & resulting in drying of leaves. High infestation causes lodging of the crop and heavy loss in yield. Infestation is severe in high yielding varieties. Under favorable conditions they multiply very fast. Both brown planthopper(BPH) and white backed planthopper(WBPH) are known for their resistance to commonly used insecticides including the neonicotinoids. Hence crop failures due to severe pest outbreaks are very common in many rice-growing tracts of India. Temperature, relative humidity and prevailing wind direction determine the severity of incidence and spread of BPH.

In appearance the adult brown planthopper is Yellowish brown to dark brown in colour measuring 4.5 to 5.0 mm long.

  • High nitrogen levels and close plant spacing, continuous submerged, shady and humid conditions in the field tend to favor the BPH increase.

• Extensive rice areas with irrigation facilities, multiple rice cropping are important factors for insect abundance.

• Outbreaks of the insect pests are closely associated with insecticide misuse, especially during the early crop stages. These insecticide sprays usually directed at leaf feeding insects disrupt the natural biological control, which favor the BPH development as secondary pest.

• The insect prefers rainfed and irrigated wetland fields to upland rice and transplanted fields to direct sown fields.

Let’s take a look at the following article highlighting the damage done by brown planthopper;


Pest attack on aman fields worries farmers

Our Correspondent, Lalmonirhat, Wednesday, October 22, 2014

Farmers in the district are worried as attack on paddy fields by brown plant hopper (BPH), locally known as current poka, poses threat to their hope for a good yield of aman this season.

Agriculture officials claim the situation is now under control while the farmers said the use of pesticides has failed to check the pest attack.

Farmers said BPH started attacking aman plants a week ago and many aman paddy fields in the district have already been attacked. They are trying to save their aman plants from being attacked by BPH, using natural methods and spraying pesticides in the fields.

Nurul Islam Bappi, a farmer of Durakuti village in Sadar upazila, said his aman plants on two bighas of land have been attacked by BPH (current poka) and it is also attacking the plants on another two bighas of land. “I have been spraying pesticides in the fields for the last three days, but to no effect,” he said.

Abdul Jalil of Jumma Para village in the upazila said BPH attacked aman plants on his three bighas of land five days ago and wreaked havoc on 50 percent plants. “As per advice of local agriculture officer, I sprayed pesticides that yielded no positive results,” he said.

Contacted, Deputy Director Safayet Hossain of the Department of Agriculture Extension in Lalmonirhat, said the situation is ‘not so alarming’. Agriculture officials are working at field level and giving advice to the farmers about use of pesticides and other methods to combat the PBH disease, he added.

Using conventional toxic pesticides will not be effective as the brown planthopper has become resilient to them. Pesticides are toxic, hazardous and pollute the environment. So a solution has to be adopted which have the traits exactly opposite to the deadly pesticides.

C-Tech Corporation provides a solution for the hopeful farmers to protect their crops effectively and efficiently. Termirepel™ a non-toxic, non-hazardous and environment friendly product repels all kinds of insects, termites, pests. They can be incorporated in agricultural films, mulches and irrigation pipes to protect the crops from the vicious pests. The product is available in the form masterbatch as well as liquid solution and is compatible with most the base polymers. The most important quality of the product is that it does not kill the target species but repels them.  Using Termirepel™ will ensure that the crops are protected which gives a ray of hope for the problem of malnourishment.




Protecting PVC from critters!

PVC has been used extensively in a wide range of construction products for over half a century. PVC’s strong, lightweight, durable and versatile characteristics make it ideal for an ample range of applications. PVC has a versatility that helps it meet the various needs of modern architecture. PVC was first used as cable insulation as a replacement for rubber during the Second World War, but has now become the superior material through its flexibility, ease of handling in installation and inherent flame retardation. PVC cables do not harden and crack over time and find use in many applications from telecommunications to electric blankets. In Europe, about 25% of all flexible PVC is used in the production of wire and cables for the electrical industries.

UK-Ant-Species-Drawn-Irresistibly-to-Electricity-2As resistant as PVC is to abrasion and corrosion, there is one thing that PVC has absolutely no resistance against-pests! Insects such as ants and termites have been long-standing enemies of PVC who damage and eventually destroy the articles. A number of insects including termites, like beetles, ants, wasps etc secrete formic acid that has the ability to dissolve the insulation of wires thereby destroying them. About 3% of the body weight of termites is made up of formic acid. Termites cause over $2 billion every year in property damage. And that’s not all wood! Termites do not eat plastic; however, the aggressive Formosan termite is known to attack plastic in search of food. Termites often chew through softer plastics. They play havoc with buried cables and sometimes bore a hole through water pipes causing service interruptions and major damage. Tunneling can lead to damage to electrical cords and cause blackouts.

Besides termites, the other species that cause major damage to PVC articles are ants. Ants going about their daily routine grow increasingly frustrated with the presence of underground optical cables and other telecommunications article_img-1equipment including lawn pedestals and terminating boxes and thereby become a growing problem for telecom companies that can blame local outages on their activities. There have been a lot of incidences where outages have been directly attributed to insect activity. Material brought into the colony can overheat equipment when it blocks air vents, increased moisture from the insects can corrode or compromise sensitive electronics, and insect attempts to push PVC wiring out of the way can ruin optical cables.

Below is an article that sheds some light on the damage caused by these critters on PVC wires and cables.


‘Crazy’ Ants, New Invasive Species, Destroys Electric Wiring

Posted: 06/10/2013 

If you thought fire ants were bad, just wait until you get a load of “crazy” ants.

Yes, crazy ants, a species of South American ant whose colony movements are so erratic that researchers could only evoke insanity when describing them.

Also known as raspberry or tawny crazy ants, the insects have spread to Florida, Louisiana and Mississippi since first being spotted in Houston, Texas, in 2002. They “have a taste for everything from livestock to electrical equipment,” according to ABC News. They have been known to infest homes, transformers and even electronic devices such as laptops and smartphones.

 Unlike its cousin the fire ant (also called the red ant), which it has displaced in several locations, the crazy ant is highly invasive. Moving into competitive territory, crazy ants aggressively compete for other species’ resources and establish dominance. Poison bait that works on fire ants is ineffective on crazy ants because the insects won’t take it.

 “When you talk to folks who live in the invaded areas, they tell you they want their fire ants back,” Ed LeBrun, an invasive species researcher at the University of Texas, said in a UT Austin College of Natural Sciences video. “Fire ants are in many ways very polite. They live in your yard. They form mounds and stay there, and they only interact with you if you step on their mound.”

 LeBrun, co-author of a recent study on how crazy ants have displaced fire ants in Texas’ ecosystems, explained that the insects’ opportunistic nesting habits are a key factor in their biological dominance. That dominance could mean drastic changes to an ecosystem that’s adjusted to the presence of fire ants — also an invasive species — over the past 40 years.

While they are omnivorous, the ants do not actually “feast on” electrical equipment, as has been suggested. The ants damage electronics by “forming bridges between the electrical contacts” and shorting them out, LeBrun pointed out.

 Though the crazy ant threat to electronics has not been lost on the tech media, the insects are probably more a threat to your air conditioner than they are to your iPhone. As CNET notes, “You might want to think twice about leaving your laptop outside in crazy ant territory, but the ants are more likely to get into fixed equipment, house wiring and even recreational vehicles.”

RIFA damaged wiresAlthough these pests have been a source of great concern and annoyance, killing them using poisons or traps somehow seems ethically wrong, not to mention unsafe and toxic. Thus we need to find a way to protect our wires and pipes from the action of these critters, without causing any harm to them or the environment. PVC has been under attack by the action of insects for decades; however we are no closer to finding a solution for this problem than we were hundreds of years ago-until recently. C Tech Corporation provides an exceptional solution for this dilemma!

C Tech Corporation offers a solution called Termirepel™ which is a non-toxic, non-hazardous additive that helps us keep insects at bay without causing any harm to the insect or any other species that consumes or comes in contact with it. It is a broad spectrum additive that works against more than 500 species of insects! It is an eco-friendly product that can be safely incorporated in polymers or coated on surfaces to repel insects and other animals without killing them. Termirepel™ is available in masterbatch and lacquer form, or as a liquid solution.  This product can be safely incorporated into the PVC insulation of wires and cables to keep pesky critters from damaging them!