बायोटेक फसल acreage चीन जैसे विकासशील देशों में, भारत और दक्षिण अफ्रीका में वृद्धि जारी 2004 ISAAA के अनुसार (International Service for the Acquisition of Agri-biotech Applications). Chinese acreage, mostly cotton, increased 31.9 प्रतिशत से 6.9 लाख एकड़ जमीन के लिए 9.1 लाख एकड़ जमीन. India’s acreage increased from 250,000 एकड़ में 2003 करने के लिए 1.24 लाख में 2004, एक 400 प्रतिशत वृद्धि. South Africa’s biotech acreage increased 25 में प्रतिशत 2004 करने के लिए 1.2 million acres where You can find fioricet for sale
. The slow progress of the regulatory process in developing countries has allowed agronomic and economic researchers to accumulate data from farm trials and estimate what may happen to productivity as biotech crops become more widely used.
Adoption of U.S. biotech crops occurred so rapidly in the United States that decisions to plant more biotech acreage were driven more by on-farm, real time experiences rather than responding to years of third party research plots and on-farm test results. उदाहरण के लिए, adoption of biotech soybeans increased from 17 percent of total acres in 1997, करने के लिए 68 में प्रतिशत 2001 और 84 प्रतिशत तक 2004.
ए 2002 हेग में कृषि अर्थशास्त्र अनुसंधान संस्थान द्वारा अध्ययन, नीदरलैंड में बीटी कपास की चीनी गोद लेने पर 1999 द्वारा 282 cotton farmers in an area with severe bollworm problems reported no changes in fertilizer and machinery use. Adopters of Bt cotton sprayed 60 प्रतिशत कम समय (के एक औसत से 20 के एक औसत के लिए टाइंस 8 बार) और कम कीटनाशक व्यय द्वारा 82 प्रतिशत. बीटी कॉटन के लिए बीज लागत थे 100-250 प्रतिशत अधिक, लेकिन अनुवर्ती अनुसंधान से पता चला है कि बीज की लागत समय पर गिरावट आई. के लिए पैदावार 1999-2001 की वृद्धि हुई 7-15 प्रतिशत, के एक औसत के साथ 10 प्रतिशत, पारंपरिक कपास की तुलना में.
From the three years of on-farm experience (1999-2001), the researchers estimated that by 2010 yields for the nation as a whole would be 7 प्रतिशत अधिक, pesticide costs would be 67 प्रतिशत कम, labor costs would be 7 percent lower and seed costs would be 120 percent higher for those using Bt cotton versus conventional cotton. In the three growing regions studied, one had a 10 percent increase in projected yields, a second had a 7 percent increase and a third area with less pest pressure had a 3.6 प्रतिशत वृद्धि. The researchers projected that the benefits to producers would be large enough so that by 2010 से अधिक 90 percent of the cotton acreage in China would be biotech, with one region at 95 percent adoption and the other at two at 90 प्रतिशत. This would be higher than the adoption rates in the United States in 2004 for biotech soybeans at 84 percent and cotton at 76 प्रतिशत.
The ISAAA published work in late 2003 looking at the yield increases expected for biotech rice. They estimated that if herbicide tolerant rice were available in 2004 followed by bacterial leaf blight resistance and insect resistance in 2005, then yields would increase by an additional 10 percent above yield increases for other reasons. They also considered a more optimistic scenario with yield increases of 15 प्रतिशत. If these agronomic traits were combined with the ‘Golden Rice’ vitamin A gene in 2007, they estimated that by 2012 के बारे में 40 percent of the world rice crop would be biotech. The earlier cited work on China estimated that adoption of biotech rice could reach 95 percent in China within 10 years of its commercial availability. The ISAAA analysis also expected China to be a rapid adopter of biotech rice.
Kym Anderson, an agricultural economist at the University of Adelaide, Australia and now on leave at the World Bank in Washington, डीसी, has looked at studies from around the world and developed some estimates of percentage increases in productivity for factors of production. में एक 2004 study on biotech rice (without the Golden gene), he used a 6 percent increase in the productivity for land, एक 8 percent increases in productivity for skilled and unskilled labor and a 5 percent increase in productivity for chemical inputs. दूसरे में 2004 analysis on biotech food crops for sub-Saharan Africa, he used productivity increases for all factors of production of 7.5 percent for course grains, 6 percent for oilseeds, 5 गेहूं के लिए प्रतिशत और 5 percent for non-Golden rice. The actual increases in productivity for each factor will obviously vary by regions within Africa, but these estimates provide some sense of why biotech crops are likely to be adopted.
Researchers have also looked at the economic benefits of “output traits” such as Golden rice. में 2002 the Center for Development Research at the University of Bonn, Germany analyzed the impact on the economy in the Philippines. The analysis estimated that vitamin A deficiency costs the Philippine economy 0.5 सकल घरेलू उत्पाद का प्रतिशत (gross domestic product) हर साल. They estimated economic gains of $23-137 million per year and an internal rate of return of 81-152 percent for the money spent to encourage consumption of the new rice. The researchers pointed out that food choices and health care are influenced by a complex set of characteristics and Golden rice should not be seen as the easy cure for diet and lifestyle choices. Despite those caveats, the researchers concluded, “Micronutrient-dense crops are an efficient way to reduce deficiency problems among the poor, and related research projects should receive higher political priority.”
Broad acceptance of biotech crops in developing countries will be based on economic efficiencies in specific locations and the effectiveness of the local knowledge transfer process. Productivity increases may increase total output of crops like cotton or may allow acreage to shift to other crops while total cotton output remains unchanged. Regardless of the cropping tradeoffs, the economic benefits appear large enough to encourage rapid adoption of biotech crops.