000 02041nab a22004577a 4500
001 a62148
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040 _aMX-TxCIM
090 _aCIS-2639
100 1 _aHeisey, P.W.
245 0 0 _aWheat rusts and the costs of genetic diversity in the Punjab of Pakistan
260 _c1997
340 _aPrinted
520 _aThe theory of impure public goods is used to demonstrate why farmers may nor grow wheat cultivars with the socially desirable level of rust resistance. First, they may grow cultivars that are high yielding though susceptible to rust. Second, many farmers may grow cultivars with a similar generic basis of resistance. Expected rust losses can be reduced by (a) more diversified genetic background in released wheat cultivars; (b) greater spatial diversity in planted cultivars; or (c) use of a temporally changing fist of cultivars known to be rust resistant, Yield trade-offs associated with these policies illustrate potential fasts of increasing genetic diversity.
536 _aSocioeconomics Program
546 _aEnglish
591 _aSEP archives 2
594 _aCSME01
595 _aCSC
650 1 0 _aCosts
650 1 0 _aDisease resistance
_91077
650 1 0 _aEconomic analysis
_91088
650 1 0 _aInnovation adoption
_91160
650 1 0 _aPakistan
650 1 0 _aPlant diseases
_91206
650 1 0 _aPunjab
650 1 0 _aResearch projects
_91237
650 1 0 _aRusts
_91251
650 1 0 _aTechnology transfer
650 1 0 _aVarieties
_91303
653 0 _aGenetic diversity
650 1 0 _91310
_aWheat
_gAGROVOC
700 1 _aByerlee, D.,
_ecoaut.
_9455
700 1 _aSmale, M.,
_ecoaut.
_9315
700 1 _aSouza, E.,
_ecoaut.
773 0 _tAmerican Journal of Agricultural Economics
_n649229
_gv. 79, no. 3, p. 726-737
942 _cJA
999 _c17691
_d17691