positively regulates positive regulation of developmental process biological regulation haustorium neck formation modulation of symbiont haustorium neck formation for entry into host positive regulation of symbiont haustorium neck formation for entry into host GO:0075199 Note that this term should not be used to annotate gene products of the host. It should only be used to annotate those gene products from the symbiont involved in this process. Any process that activates, maintains or increases the frequency, rate or extent of symbiont haustorium neck formation for entry into host. The host is defined as the larger of the organisms involved in a symbiotic interaction. biological_process positive regulation by symbiont of entry into host