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Bt Brinjal The scope and adequacy of the GEAC environmental risk assessment

Bt Brinjal: The scope and adequacy of the GEAC ... - Down To Earth

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56 <strong>Bt</strong> <strong>Brinjal</strong>: <strong>The</strong> <strong>GEAC</strong> <strong>environmental</strong> <strong>risk</strong> <strong>assessment</strong>consumer. It is typically divided into a producer surplus (related to <strong>the</strong> increased supply times <strong>the</strong> reduced price compared to<strong>the</strong> present supply times <strong>the</strong> present nominal price) <strong>and</strong> a consumer surplus (related to <strong>the</strong> increased supply times <strong>the</strong> presentnominal price compared to <strong>the</strong> increased supply times <strong>the</strong> reduced price). <strong>The</strong> reduced price is related both to <strong>the</strong> projectedincreased supply <strong>and</strong> a projected change in dem<strong>and</strong>. In India, dem<strong>and</strong> for brinjal is expected to grow as <strong>the</strong> Indian populationincreases. In addition, <strong>the</strong> producer surplus must be divided between <strong>the</strong> farmer <strong>and</strong> <strong>the</strong> producer <strong>of</strong> <strong>the</strong> new technology. Thisis related to <strong>the</strong> price <strong>of</strong> <strong>the</strong> new technology <strong>and</strong> <strong>the</strong> quantity <strong>of</strong> <strong>the</strong> technology that will be used to generate <strong>the</strong> increased supply.Economic surplus for hybrid <strong>Bt</strong> brinjal has been estimated by Krishna <strong>and</strong> Qiam (2008) for all <strong>of</strong> India, using data onlyfrom West Bengal, Andhra Pradesh <strong>and</strong> Karnataka. Unfortunately, this estimate relies on several assumptions that all lead toan overestimate <strong>of</strong> <strong>the</strong> economic surplus. <strong>The</strong>se include a) hybrid <strong>Bt</strong> brinjal increases yield by 40% over hybrid non-<strong>Bt</strong> brinjal<strong>and</strong> by 60% over OPV non-<strong>Bt</strong> brinjal; b) <strong>Bt</strong> brinjalreduces insecticide costs by 75%; c) small-scale resourcepoorfarmers will adopt hybrid <strong>Bt</strong> brinjal at <strong>the</strong> sameTable 6. Economic surplus for brinjal IPM <strong>and</strong> hybrid <strong>Bt</strong> brinjal<strong>Brinjal</strong> Hybrid <strong>Bt</strong>rate as large-scale commercial farmers; <strong>and</strong> d) statedIPM 1 <strong>Brinjal</strong> 2preference for hybrid <strong>Bt</strong> brinjal accurately estimates <strong>the</strong>future choice to use hybrid <strong>Bt</strong> brinjal. Overall <strong>the</strong>se Economic Surplus (Rs.M)326 3 1,008 4assumptions may also overestimate <strong>the</strong> proportion <strong>of</strong>Consumer surplus (%)37 41Farmer surplus (%)63 10<strong>the</strong> total economic surplus that accrues to consumers.Company surplus (%)0 48Although three technology scenarios are presented1 Results from Alam et al. 2006(Krishna <strong>and</strong> Qiam 2008), Scenario II is <strong>the</strong> most likely 2 Results from Krishna <strong>and</strong> Qiam 2008projected near-time future for hybrid <strong>Bt</strong> brinjal, if it is 3 For <strong>the</strong> Birbhum District <strong>of</strong> West Bengal only4 For all <strong>of</strong> Indiacommercialised. It assumes that only hybrid <strong>Bt</strong> brinjalvarieties are available <strong>and</strong> that only 2% <strong>of</strong> farmers in eastern India are likely to adopt hybrid <strong>Bt</strong> brinjal. Because West Bengal,Orissa, <strong>and</strong> Bihar comprise nearly all <strong>of</strong> <strong>the</strong> production in eastern India, <strong>and</strong> all three forbid <strong>the</strong> commercial use <strong>of</strong> <strong>Bt</strong> brinjal,Scenario II is <strong>the</strong> most likely future scenario.Economic surplus for brinjal IPM has been estimated by Alam et al. (2006) for <strong>the</strong> Birbhum District <strong>of</strong> West Bengal.<strong>The</strong>y do not attempt to estimate economic surplus for all <strong>of</strong> India. Because <strong>the</strong> data are based on actual farmer behaviour, <strong>the</strong>estimate <strong>of</strong> economic surplus does not suffer <strong>the</strong> same failings as <strong>the</strong> estimate for <strong>Bt</strong> brinjal.<strong>The</strong> economic surplus for brinjal IPM is estimated at Rs.326 million for one district <strong>of</strong> West Bengal (Table 6). In contrast,<strong>the</strong> economic surplus for <strong>Bt</strong> brinjal is estimated at Rs.1,008 million for all <strong>of</strong> India, <strong>and</strong> this is considerably overestimated.<strong>Brinjal</strong> IPM will provide significantly greater social benefits to India than hybrid <strong>Bt</strong> brinjal. Although <strong>the</strong>se two technologies arenot mutually exclusive (<strong>the</strong>y can be used toge<strong>the</strong>r), a significantly larger public investment in IPM technology is merited.<strong>The</strong> consumer surplus is estimated to be 37% <strong>and</strong> 41% for <strong>the</strong> two technologies (Table 6). <strong>The</strong> similarity in <strong>the</strong> estimatessuggests that similar price elasticities <strong>of</strong> supply <strong>and</strong> dem<strong>and</strong> were used in both calculations, which is reassuring.More interesting is <strong>the</strong> farmer surplus. Farmers receive most <strong>of</strong> <strong>the</strong> benefits from brinjal IPM (63%). Company surplus isestimated to be 0%, because brinjal IPM requires mostly h<strong>and</strong> rouging <strong>and</strong> intermittent insecticide application. If pheromoneuse becomes a key component <strong>of</strong> brinjal IPM, some <strong>of</strong> <strong>the</strong> producer surplus will go to companies providing pheromone.Farmers are projected to receive only 10% <strong>of</strong> <strong>the</strong> economic surplus from hybrid <strong>Bt</strong> brinjal, even under <strong>the</strong> optimistic casedescribed by Krishna <strong>and</strong> Qiam (2008). Almost half <strong>of</strong> <strong>the</strong> economic surplus is projected to go to Mahyco. <strong>The</strong> divisionbetween farmers <strong>and</strong> Mahyco is based on Krishna <strong>and</strong> Qiam’s (2007, 2008) estimate <strong>of</strong> <strong>the</strong> willingness-to-pay for hybrid <strong>Bt</strong>brinjal by Indian farmers, which is <strong>the</strong> optimal price for Mahyco to charge. If Mahyco were to charge less for hybrid <strong>Bt</strong> brinjalseed <strong>the</strong>n farmers would receive a larger proportion <strong>of</strong> <strong>the</strong> economic surplus.It is remarkable that farmers may receive relatively little <strong>of</strong> <strong>the</strong> potentialeconomic benefit from hybrid <strong>Bt</strong> brinjal even though <strong>the</strong>y will be assuming most<strong>of</strong> <strong>the</strong> <strong>risk</strong> <strong>of</strong> producing it.

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