The Journal "Agriculture and Forestry"
Časopis "Poljoprivreda i šumarstvo"
- Since 1955 -
Year 2013, Volume 59 Issue 2
| Year : | 2013 |
| Volume : | 59 |
| Issue : | 2 |
| Authors : | Radisav DUBLJEVIĆ, Nenad ÐORÐEVIĆ, Mirjana DAMJANOVIĆ, Dragoljub MITROVIĆ, Nenad MILENKOVIĆ |
| Title : | INFLUENCE OF COMPRESSION DEGREE AND INOCULATION ON CHEMICAL COMPOSITION AND SILAGE QUALITY OF DIFFERENT MAIZE HYBRIDES |
| Abstract : | The experiment was set up as three-factorial trial according to statistical model 2x2x2 (2k), where A was the factor of maize hybrid (A1 = hybrid FAO maturity group 4 and A2 = hybrid FAO maturity group 7), factor B was the degree of compression of silage mass (B1 = 700 gdm-3, B2 = 550 gdm-3) and C was the inoculation of the silage material (C1 =without inoculants; C2 = with inoculants). Ensiling was performed in the experimental containers with a volume of 60 dm3. Experimental containers were opened after 56 days and the representative samples were used to determine the main parameters of the chemical composition and the silage quality. The chemical analysis in the silages of more compressed material (700 gdm-3) showed the reduction of ammonia nitrogen and acetic acid, and increment of lactic acid (P <0.05). Inoculation of silage material has not significantly improved the basic parameters of silage quality (relative ratio of lactic, acetic and butyric acids), but a significant decrease of pH values (P <0.05) was determined. The influence of selected hybrids of silage corn was not significant for most parameters of chemical composition, except for the content of crude fiber and mineral matter. Based on the research conducted, it can be concluded that the compression degree was the most important measure in the technology of silage making. The adequate compression shortens the duration of the aerobic phase and limits the activity of proteolytic enzymes. In practice, maximum attention should be paid to the factors which, directly or indirectly, the compression degree of ensiling material depends on: the degree of maturity, chop length, choice of the object for silage and/or choosing machines for compression. Factor of inoculation (inoculants based on homo fermentative bacteria of lactic acid) is of a little importance to the corn silage practice. Selection of hybrids factor was not significant for the most important parameter of chemical composition but can be assumed (based on the literature review) that is primarily significant for the total dry matter yield, especially in interaction with the factor of sowing density. |
| For citation : | Radisav DUBLJEVIĆ, Nenad ÐORÐEVIĆ, Mirjana DAMJANOVIĆ, Dragoljub MITROVIĆ, Nenad MILENKOVIĆ (2013): INFLUENCE OF COMPRESSION DEGREE AND INOCULATION ON CHEMICAL COMPOSITION AND SILAGE QUALITY OF DIFFERENT MAIZE HYBRIDES. Agriculture and Forestry, Vol. 59. Issue 2: 37-45, 2013, Podgorica. ISSN 0554-5579 (Printed), ISSN 1800-9492 (Online). |
| Keywords : | corn, silage, hybrid, compression degree, inoculation, chemical composition, quality |
| download paper | |