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";s:4:"text";s:14287:"We also reiterate here the promise that our team of reporters, copy editors, fact-checkers, designers, and photographers will deliver quality journalism that stays away from vested interest and political propaganda. But its neighbour Pakistan grows only Bt cotton varieties, over about 30 lakh hectares, and has similar agro-climatic conditions as found in India. India’s obsession with Bt cotton hybrids is blamed for its lower yields as compared to other nations, notably the US, Australia, Brazil and China. There are discrepancies between yield and the deployment of Bt cotton. Controlling for such bias showed (in 2012) that the contribution of Bt cotton to yield increase was only about 4% each year; still, since yields vary annually by over 10%, the benefits claimed were dubious. than acres with no Bt cotton and acres with combination of Bt Source link. While Bt cotton adoption corresponded to a drop in spraying for bollworms, the study states, “countrywide yields stagnated after 2007 even as more farmers began to grow Bt. For instance, the Bt acreage was only 3.4% of the total cotton area in 2003, not sufficient to credit it for the 61% increase in yield in 2003-2004. © 2008 FBAE ®. How Bt cotton is developed? January 1999 by George Frisvold, Russell Tronstad, Jorgen in the US. It is tough to isolate one particular aspect of a technology and evaluate it properly. Synthetic Biology - A New Paradigm in the Biotechnology Revolution Tucson, AZ. Even the first ‘misconception’ is prised from between the lines, if not rejected outright. In fact, the yield growth rate was just half in the pre-BT cotton period (from 1993-94 to 2001-02), compared to the Bt cotton period of 2002-03 to 2010-11, per studies of A Narala and AR Reddy of the Central Institute of Cotton Research (CICR), Nagpur, in 2011, published when Kranthi was the Director of CICR. Subscribe to The Hindu now and get unlimited access. It is estimated that prices are .8¢/lb. Much of the cotton cultivated until the 20th century was of the indigenous ‘desi’ variety, Gossypium arboreum. It has helped us keep apace with events and happenings. In 1995, attacks from these pests reduced U.S. cotton Merely stating alternative sustainable strategies for cotton farmers will only confuse them. Bt is the short form for the name of bacteria Bacillus thuringensis from which the gene producing Cry protein was extracted, hence the prefix BT (Actually “Bt”) e.g., Bt cotton, Bt Brinjal etc. As of now, correcting imbalances in the current agronomic practices and widespread application of micro-irrigation technologies will help to sustain and even increase yields. The commercialisation of Bollgard-III (in Australia) with three insect protective traits and Bollgard-II (in the US and Brazil) with two insect protective traits along with HT, shows farmers’ eagerness to use technology to sustain yields. The University of Arizona, Dept. 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