Influence of weather conditions in sunflower production on grain yield

U ovom završnom radu analizirana je proizvodnja suncokreta u dvije vegetacijske sezone (2019. i 2020.) na Obiteljskom poljoprvrednom gospodarstvu „Hardi Antun“, koje se nalazi u Vukovarsko-srijemskoj županiji. Predusjev suncokretu u obje godine bio je kukuruz. Osnovna gnojidba obavljena je u jesen. Sjetva je obavjena PKS 4 pneumatskom sijačicom 14. travnja 2019. godine (hibrid P64LE25) i 16. travnja 2020. godine (hibrid P64LE99) na sklop od 65 000 biljaka/ha. Usporedno sa sjetvom obavljena je gnojidba u količini od 230 kg/ ha s gnojivom NPK 8:15:15 + 3% Ca + 9% S. Nakon same sjetve 2019. godine pala je nadprosječna količina oborina kroz samo nekoliko dana zabilježeno je 86 mm oborina dok je za travanj 2020. godine bilo 32,6 mm oborina. U usporedbi oborina 2019. i 2020. godine vidljiva je razlika od 178mm oborina više u 2019. godini . Prihrana je obavljena 2020. folijarno s Condi Agro (stimulator rasta) u dva navrata zajedno s herbicidima u količini od 5 L/ha. Žetva je obavljena 31. kolovoza 2019. i 11. rujna 2020. godine. Prinos u 2019. je bio 3,3 t/ha dok je uljnost bila izrazito slaba te je iznosila 40.33 %, a vlaga u žetvi je bila 6,4 %. Prinos u 2020. iznosio je 3,1 t/ha dok je uljnost u prosjeku bila 44,9 %, a prosječna vlaga u žetvi je iznosila 7,36 %. Prinos se između dvije godine nije uvelike razlikovao, ali zato kvaliteta je to jest uljnost.This final work analyses the production of sunflower in two growing seasons (2019 and 2020) on the Family Farm "Hardi Antun", which is located in Vukovar-Srijem County. Pre-crop to sunflower in both years was maize. Basic fertilization was done in the fall. Sowing was carried out with PKS 4 pneumatic seed drill on April 14, 2019 (hybrid P64LE25) and on April 16, 2020 (hybrid P64LE99) on 65,000 plants/ha. With sowing, fertilization was done in the amount of 230 kg/ha with NPK fertilizer 8:15:15 + 3% Ca + 9% S. After sowing in 2019, the above-average amount of precipitation fell in just a few days, 86 mm of precipitation was recorded, while for April 2020 there was 32.6 mm of precipitation. A comparison of precipitation in 2019 and 2020 shows a difference of 178 mm more precipitation in 2019. Fertilization was carried out in 2020 foliar with Condi Agro (growth stimulator) on two occasions together with herbicides in the amount of 5 L/ha. The harvest was done on August 31, 2019 and September 11, 2020. The yield in 2019 was 3.3 t/ha, while the oil content was extremely low and amounted to 40.33%, and the moisture in the harvest was 6.4%. Yield in 2020 was 3.1 t/ha while oil yield averaged 44.9% and average harvest moisture was 7.36%. The yield did not differ much between the two years, but that is why the quality is the oil content