RESPONSE OF MAIZE TO LIMING IN POSAVINA COUNTY (FB&H, BOSNIA AND HERZEGOVINA)

Transcription

1 Conference of agriculture students with international participation Naučno-stručni skup studenata poljoprivrede s međunarodnim učešćem Banja Luka, oktobra RESPONSE OF MAIZE TO LIMING IN POSAVINA COUNTY (FB&H, BOSNIA AND HERZEGOVINA) Jurica JOVIĆ, Student at Faculty of Agriculture in Osijek Mirta RASTIJA, Department for Crop Production, Faculty of Agriculture in Osijek Vlado KOVAČEVIĆ, Department for Crop Production, Faculty of Agriculture in Osijek Dario ILJKIĆ, Department for Crop Production, Faculty of Agriculture in Osijek University of Josip Juraj Strossmayer in Osijek Faculty of Agriculture in Osijek Croatia

2 INTRODUCTION Maize is the most frequently field crop on the arable lands in FB&H and it is growing on approximately 24% of total arable lands area Acid soils are often a limiting factor of field crop yields Amelioration of acid soil by different liming materials can raise soil ph, benefiting soil properties and plant growth and liming is widely practiced for improving the acid soils productivity

3 Aim of Study Testing the maize response to liming on pseudogley soil in Posavina County, FB&H, Bosnia and Herzegovina

4 Material and methods Description of the area Posavina Canton is the smallest county in FB&H, with total area of km 2 or 1.24 % of the Federation and it is situated in its northern part. It is divided in three municipalities: Map of Bosnia and Herzegovina Odžak km 2 Orašje km 2 Domaljevac-Šamac km 2 A moderate continental climate with mean annual precipitation quantity of about 800 mm; the mean annual air temperatures ranges from 10 to 11 C.

5 Soil properties The selection of the experimental plot was based on the previous soil test which resulted in the following soil properties: ph AL-metoda (mg/100g) % Cmol/ kg H 2 O KCl P 2 O 5 K 2 O Humus CaCO 3 Hy

6 t t The field experiment was started in the spring of 2011 in Gornja Dubica (Posavian County, Bosnia and Herzegovina) on pseudogley soil with four liming treatments, as follows: 0 (without liming), 3.5 t ha -1, 7 t ha -1 and 14 t ha t 0 t 7.0 t 14.0 t t 3.5 t 14.0 t 3.5 t The trial was set up in the four blocks divided in four subplots of 72.5 m 2 which represented four replicates t 3.5 t 0 t t 7.0 t 14.0 t

7 Maize hybrid OSSK 596 (originated from Agricultural Institute, Osijek, Croatia) was grown Three rows (about 10,5 m 2 ) from each plot were harvested manually in the second half of September Yields were calculated on a 14% grain moisture basis

8 Hydratised lime containing about 72% CaO, 2% MgO, 21% of bound water from Fabrika kreča Carmeuse Integral a.d. Doboj, BiH was used to neutralize soil acidity

9

10

11 Weather data for 2011, and long-term mean in Gradačac (LTM: ) during May - September period Precipitation (mm) Mean air temperatures ( C) , , LTM LTM

12 Results and discussion

13 Using 14 t of hydratized calcite ha -1 resulted by yield increase for 12% compared to the control Generally, non significant differences in maize grain yield among treatments were found, although increasing trend of yield with increasing lime doses could be observed 6,6 6,4 6,2 6 5,8 5,6 5,4 Grain yield (t ha -1 ) 6,53 6, ,82

14 Liming resulted in grain yield per plant increases for about 4% (7 t ha -1 hydratized calcite) and 9% (14 t ha -1 hydratized calcite) compared to the control There was no difference found in grain yield per plant between the control and 3.5 t ha -1 hydratized calcite. 125 Grain yield per plant (g) Control 3.5 t 7.0 t 14.0 t

15 There were no significant differences between the control and all liming treatments in plant density, sterile plants contribution and grain moisture at harvesting Somewhat higher share of sterile plants is the result of very unfavourable weather conditions, mainly drougth and high air temperatures during silking and pollination Hydratized calcite (t ha -1 ) LSD % Plant density (%); 100% = plants ha ns Grain moisture at harvesting (%) ns Sterile plants contribution (%) ns

16 Conclusions Using the 14 t ha -1 of hydratized lime resulted by yield increase for 12% compared to the control Although maize grain yield gradually raised with increasing liming rates, between the control and all liming treatments there were no statistically differences, as well as in plant density, sterile plants contribution and grain moisture at harvesting Shallow disposal of hydratized calcite and weather characteristics of the growing season 2011 could be reasons for minor response of maize to liming In the next years it could be expecting better effects of liming on the field crops in crop rotation

17 THANK YOU FOR YOUR ATTENTION!