Bt seed usage data, representative at the crop reporting district level, came from a proprietary data TraitTrak® (22, 23) (supplementary text S2 and table S1).Benefits and costs of rootworm Bt maizeCorn rootworm damage to maize plants is commonly measured using a 0 to 3 node injury ...
during the Kharif 2011 season in Andhra Pradesh, of 47 lakh acres planted with Bt cotton, 33.73 lakh acres suffered from crop failure. In other words, two-thirds of the cotton area had a yield loss of more than 50%.The data from AP shows that aften ten years ...
This article examines this issue by estimating the heterogeneous impacts of Bt corn adoption at different points of the yield distribution using farm-level survey data from the Philippines. A recently developed estimation technique called instrumental variable quantile regression (IVQR) is used to assess...
Edgerton, M.D. et al. Transgenic insect resistance traits increase corn yield and yield stability.Nat. Biotechnol.30, 493–496 (2012). ArticleCASPubMedGoogle Scholar Kathage, J.K. & Qaim, M. Economic impacts and impact dynamics ofBt(Bacillus thuringiensis) cotton in India.Proc. Natl. Acad...
How Robust Are the Data? The effect of environmental factors on Bt crops has been tested in experiments carried out using controlled environment chambers, greenhouses, laboratories, containers in the field, and/or open-field experiments (see online supplemental information Table S1). However, most ...
coverage signals suggested that no individuals collected from Cry1Ab + Cry1F expressing corn had single copy genotypes, while their conspecifics collected from non-expressing corn in the same small experimental plots did. These data suggest that the CNV on Chr 9 continues to be under selection...
Policy should lead to the development of regulatory frameworks that minimise the number of new data requirements and maximise the value of existing studies for risk assessment; costs will thereby be reduced, increasing the prospects for Bt crops, and transgenic insect-resistant crops generally, to ...
DS and VU contributed to conceptualization; GR, SV, NB and DS performed data curation; GR, AK and SV carried out formal analysis; DS contributed to funding acquisition and project administration; GR, AK and DS performed investigation; DS, NB, NN and KKK contributed to methodology; VU, DS,...
This Analysis of data from 38 field studies identifies key factors affecting the durability of Bt toxin pyramids, and should inform future resistance management strategies. Transgenic crop pyramids producing two or more Bacillus thuringiensis (Bt) toxins
In 2014, the area planted worldwide to genetically engineered cotton, corn and soybean producing Bt proteins grew to 78 million hectares (ha)5. Although Bt crops can increase yield and profit, suppress pests, and decrease reliance on conventional insecticides6–10, evolution of resistance by ...