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Query Subject Bt brinjal
Message How does Bt technology differ from conventinal insecticides in controlling pests ?
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Conventional insecticides are generally sprayed on the crops to destroy pests. The shortfalls in this system are many. Insecticidal sprays are effective only during a brief window between the hatching of larvae and its penetration into the fruit and shoot of the plant. Once the  larva bores into the plant, it is impervious to insecticidal sprays. To avoid this possibility, farmers tend to resort to saturation spraying, a process that not only adversely affects the environments, but also their health and that of the end consumers. These sprays also destroy non-agricultural plants and the local ecology. In Bt brinjal, the insecticidal protein is expressed by the plant itself and the borer is killed as it tries to bore into the plant. However, Bt brinjal is harmless to the beneficial insects and non-target organisms.

Query Subject Bt brinjal
Message How does genetically engineering fruit and shoot borer (FSB) resistance into brinjal help farmers and consumers?
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Currently, farmers use labour-intensive practices to control FSB such as the prompt manual removal of wilted shoots. Thr trapping of male moths using pheromones to prevent mating and the use of nylon netting is also done to protech the plants.
These efforts are usually insufficient, thereby forcing faremrs to rely heavily on insecticide sprays to control FSB. However, FSB is only vulnerable to sprays for a new hours before it bores into the plant, forcing farmers to spray insecticides as often as every 2-3 days. Intensive use of insecticides poses a serious threat to human health and the environment. Heavy use of pesticide sprays also adds to the cost of production. With bt brinjal, the farmers will gain increased productivity, profits and health benefits while the consumers will get access to pesticide-free safer fruits. The increased productivity will help maintain low prices for the consumer while the farmers will gain from higher marketable yields.

Query Subject Bt brinjal
Message What is the agricultural importance of brinjal cultivaiton in Bangladesh?
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Brinjal is a primary source of cash income for resource-poor farmers in Bangladesh. Currently, 7.8 percent of the land under vegetable crops, 64,208, hectares is decicated to growing about 340,000 metric tonnes of brinjal per annum. However, this is only 1.1 percent of the world's production. Brinjal crop productivity is lower in Bangladesh than in neighboring countries. The main growing districts in Bangladesh are: Bogra, Chittagong, Comilla, Dhaka, Dinajpur, Faridpur, Jamalpur, Jessore, Khagrachari, Khulna, Mymensingh, Rangamati, Rangpur, Rajshahi, Sylhet, and Tangail.

Query Subject Bt brinjal
Message Why choose brinjal as the first genetically engineered food crop?
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Brinjal is a vegetable that is very popular in Asian countries such as Bangladesh, India, the Philippines and China. It is grown year round mainly by small family farms in these countries and is an important source of nutrition and income for many resource poor farmers. Suppling about 25 calories per serving with virtually no fat, the vegetable is a staple in vegetarian diets throughout South Asia and is one of the cheapest vegetables to procure by resource poor communities. However, a large percentage of the crop does not make it to the market because of Fruit and Shoot Borer (FSB) infestation that can render as much as 70% of the crop unusable. This results in an immense drain on the income of small and medium farmers not only from the loss in marketable yield, but also from the large amounts spent on pesticide sprays in an attempt to curb infestation. The unrestrained spraying of chemical pesticides adversely affects the health of farmers and farm workers. Also, pesticide redidues from such concentrated use tend to remain for longer periods on the vegetable, ultimately affecting consumers' health.

Query Subject Bt brinjal
Message What is genetic engineering?
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Genetic engineering involves the introduction of a specific gene into the genome of a plant to obtain a desired trait. The gene introduced may come from another plant species or from any other organism. While traditional plant breeding involves crossing related plants, genetic engineering uses modern biotechnology tools that allow breeders to be more precise and enables the introduction of useful traits that are otherwise difficult or impossible to achieve by conventional means. The goals of genetic engineering are the same as with traitional breeding. Scientists may aim to improve crop performance in the field by conferring pest and disease resistance, herbicide resistance, or tolerance to environmental stresses (such as salinity and drought or flooding). They may also aim to develop products with enhanced value, such as improved post-harvest life, nuttitional value, or other health benefits.

Query Subject Bt brinjal
Message What is fruit and shoot borer (FSB)?
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The brinjal FSB is the most destructive insect pest for brinjal in South and South East Asia. The FSB is a small larva that bores inside shoots, resulting in the withering of the shoots. It also bores into and feeds on young and maturing fruit, making thr fruit inedible and unfit for market. Damage from the FSB start at the nursery stage and continues until harvest.

Query Subject Bt brinjal
Message Why Bt brinjal?
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Bt brinjal provides and effective environmentally friendly and economically sustainable solution to tackle crop losses resulting from fruit and shoot borer infestation. The cry1-Ac protein produced in Bt brinjal is similar in structure and activity to that found in nature and is already available and used commercially by organic growers. However, pesticidal sprays are only effective during a brief window then the larvae hatches from the egg and bores into the fruit or shoot of the brinjal plant. Once the larvae takes refuge within the fruit they are safe from surface sprays however intensive they may be, and are free to destroy the crop from within. Bt brinjal, ensures a built-in resistance against the fruit and shoot borer larvae.

Query Subject Bt brinjal
Message Is Bt brinjal sae to eat?
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The experience of millions of consumers of Bt products for nearly ten years and the use of Bt as a biopesiticide for more than 60 years indicates an excellent track record of safety to humans and the environment. scientists have conducted rigorous tests as per the stringent requirements of regulatory bodies to ensure that Bt brinjal is safe for human consumption.

DG, BARI.

Query Subject Bt brinjal
Message What is Bt brinjal?
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Bt-Brinjal refers to "fruit and shoot borer resistant" brinjal, which is also called Bt brinjal, and is brinjal that was evolved through genetic engineering. Brinjal is also known as eggplant or aubergine around the world. Contrary to popular misconception, the "Bt" in Bt brinjal does not stand for "Biotechnology". It is actually short for Bacillus thuringiensis, a soil bacterium that harbours a gene called cry1-Ac. The cry1-Ac gene produces an insecticidal protein that is effective in controlling the larvae of certain moths that bore into and feed on the shoots, leaves and fruit of plants like brinjal. This protein is toxic to a narrow range of insects, but is not harmful to animals or humans. In the last few years, several crops have been genetically engineered to produce their own Bt proteins, making them resistant to specific groups of insects. Bt brinjal is genetically engineered to contain its own FSB resistance mechanism the Bt gene, cry 1-Ac.
DG, BARI.

 

Query Subject mango
Message baro masi misti abong sossado amer ki ki jath Bari hote powha gi ?
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