Testing the quality of corn grown with the addition of beneficial microorganisms

Kukuruz (Zea mays L.) je jedna od vodećih poljoprivrednih kultura u svijetu, a kao takav se koristi za hranidbu stoke, ljudsku prehranu i u raznim industrijama. Kvaliteta kukuruza procjenjuje se na osnovi uzgojnih komponenata uroda i prema kemijskom sastavu zrna. Zadatak ovog rada je bio istražiti učinkovitost različitih pripravaka korisnih mikroorganizama EM tehnologije u varijantama uz navodnjavanje i gnojidbu kao i bez ikakvih tretmana na urod i osnovna svojstva kakvoće zrna hibrida kukuruza OSSK 499. Uzorci zrna kukuruza uzimani su tijekom žetve, a njih određivao sadržaj proteina, ulja, vlažnosti zrna, hektolitarske mase i udjela škroba. Najveći urod 13140 kg/ha zabilježen je u varijanti racionalnog navodnjavanja, uz gnojidbu 100 kg/ha dušika i bez tretmana KM. Najveća hektolitarska masa u iznosu 79 kg je zabilježena kod usjeva kukuruza uzgojenog uz bogato navodnjavanje, gnojidbu od 200 kg/ha dušika i bez primjene KM. Najveću količinu vode u zrnu imao je kukuruz uzgojen bez gnojidbe, uz bogato navodnjavanje i bez tretiranja KM. Najveći sadržaj bjelančevina u zrnu imao je kukuruz uzgojen u varijanti bez navodnjavanja, uz gnojidbu 200 kg/ha dušika i uz tretiranje KM1. Najviši sadržaj ulja u zrnu imao je kukuruz uzgojen bez navodnjavanja i gnojidbe, ali uz KM3. Zrno kukuruza uzgojenog uz racionalno navodnjavanje, bez gnojidbe i bez primjene KM imalo je najviši udio škroba. Iz navedenog se može zaključiti da je upotreba KM imala najveći utjecaj na parametre bjelančevina i ulja u zrnu kukuruza.Corn (Zea mays L.) is one of the most commonly planted agricultural crop in the world. It is used as a feed for livestock, for human consumption and as a raw material in various industries. Corn quality evaluation is based on the genetic components of the yield and chemical composition of the grain. The aim of this study was to examine the effectiveness of a different beneficial technologies microorganism preparations with irrigation and fertilization as well as without any treatment of the crop and the basic properties of grain of maize hybrid OSSK 499. The grain samples were collected during the harvest, afterwards they were subjected to the analysis of protein, oil, moisture and starch content and determination of the hectolitre weight. The highest yield of 13140 kg/ha was achieved during rational irrigation, including fertilization with 100 kg/ha of nitrogen and without beneficial microorganisms use. The highest hectolitre weight of 79 kg was recorded in corn grown with the rich irrigation, fertilization with 200 kg/ha of nitrogen and without the beneficial microorganism 1 application. The highest moisture content was found in the grain of the corn grown without fertilizers, with abundant irrigation and without beneficial microorganism treatment. The highest protein content was recorded in the corn grown without irrigation, but with fertilization with 200 kg/ha of nitrogen and under treatment with beneficial microorganism. The highest oil content was found in the corn grown without irrigation and fertilization, but with beneficial microorganism 3. Corn grown with rational irrigation, without fertilizer addition or beneficial microorganisms use had the highest starch content. From the above-mentioned, it can be concluded that the use of the beneficial microorganisms had the greatest impact on the protein and oil content in the corn grain