The effect of different supplements in humus on the pH value of humus : bachelor thesis

U ovom završnom radu određivane su pH vrijednosti humusa u kojemu je rasla biljka rukola. Humusi su pripremljeni na šest različitih načina: čisti humus bez dodataka, humus s dodatkom letećeg pepela na koji je adsorbiran bakar, humus u koji je dodan humus na koji je adsorbiran bakar, humus s dodatkom ljuski jaja na koje je adsorbiran bakar, humus s dodatkom zeolita na koji je vezan bakar te humus koji je zalijevan samo s vodenom otopinom bakra. Na osnovu izmjerenih pH vrijednosti može se zaključiti kako niti jedan pripremljeni humus ne bi smio ometati rast i razvoj rukole što je i potvrđeno uzgojem biljke. Svi uzorci su bili unutar optimalnog raspona pH vrijednosti koja je pogodna za rast i razvoj rukole.In this bachelor thesis, pH values of humus in which rocket was grown were determined. Humus was prepared in six different ways: pure humus without additives, humus with the addition of fly ash on which the copper was adsorbed, the humus with the addition of humus on which copper was adsorbed, humus with the addition of egg shells on which copper was adsorbed, humus with the addition of zeolite on which copper was sorbed, and humus that was watered only with an aqueous copper solution. Based on the measured pH values, it can be concluded that none of the prepared humus should hinder the growth and development of the rocket as confirmed by the cultivation of the plant. All the samples were within the optimum range of pH values suitable for the growth and development of the rocket