Not only poor but those who are well-off sometimes are reluctant towards a girl child!
They do it in blindness of idea that girl is not the 'Vansh' (successor) and will be the property of in-laws after marriage. Big landlords, Thekedhars , Panchs of Panchayat etc do or force someone to do the female infanticide.
Its not a problem restricted to rural areas but is also identical in urban areas. Literate peoples at high posts also believe in same extremeness. All this results in falling sex ratio (came down from 909 in 2001 to 883 in 2011.) .
Those who believe that girls are not the successor or are 'Paraya Dhan' (in-law's property) in fact forget that without girls a planet, a country , a society can't be possible. Because without a girl there can be no Vansh, no family, no tradition to follow and no ONE to believe!
Girls are the most important element of society but god knows that why the fickle minded people don't realize that every person standing on earth is only and only because there was a girl to give birth to it. This universe , god/goddess , nature , earth every thing symbolizes A GIRL ! Then why girl is SHRAPIT(cursed) and a boy is GIFTED?