Faculty of Agricultural Sciences and Food
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Skopje
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Item type:Publication, Sunflower and climate changes: adaptation and mitigation potential from case study in RN Macedonia(Proceedings of the 20th International sunflower conference, 2022-06-20)Dimov, Zoran; Cukaliev, Ordan; Mukaetov Dusko; Tanaskovic VjekoslavThe negative effect of climate change on agriculture in the Republic of North Macedonia is increasing. The agricultural as whole and particular small farmers are expected to be exposed to prolonged heat waves, more severe droughts and floods. Less than 10% of agricultural land is irrigated, and with the exception of some parts of the country, water deficiency occurs in the summer, resulting in significant moister stress for summer and annual crop. For assessing the sunflower vulnerabilities in the south-east region in country to climate change and measuring the impacts of the proposed adaptation measures, the CropSyst model was used which offer to evaluate a set of adaptation options such changes in sowing date and irrigation management as adaptation strategies to forecast climate change. The time horizons that are studied are 2025 and 2050, and the comparison is done against a baseline year – 2000, considered as a representative of current conditions. The base scenario (SC 0) which was used as a referent one to which comparisons were made is without irrigation. Agro-management adaptations predicted 8 scenarios (SC1 – SC 8), with implementation of 3 types of irrigation: sprinkler, drip irrigation and furrow, with irrigation volume of 50 and 70 mm and number of irrigation ranked from min. 2 to max. 12 as well as every 20 days, depends from type of irrigation. The data from 2025 show that the average sunflower yield for all eight scenarios is higher for 38% compared with base scenario. By 2050 it’s predicted that average sunflower yield will decreased by approximately 17% compared with 2025, although the irrigation increased the yield in average for 17% in all scenarios compared with base one when 2050 is analyzed separately. Irrigation with sprinklers 4 times with irrigation application of 50 mm between 159 and 217 day of the year gave the highest yield of around 2200 kg ha-1 (SC 1), separating the sprinkler as more acceptable because with the same amount of water the yield was higher compared with furrow irrigation. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, VARIABILITY OF QUANTITATIVE PROPERTIES IN OILSEED RAPE - Brassıca napus L., AND EFFICIENCY FROM APPLICATION OF CERTAIN MACRO AND MICROELEMENTS(Trakya University Publisher, 2019-11-06)Iljovski, Igor, Dimov Zoran, Kabranova Romina, Arsov Zlatko, Canev Ile, Tanaskovic Vjekoslav, Dimovska DanielaDetermination of quantitative characteristics by using macro and microelements that have great importance on the development of oilseed rape - Brassica napus L. started by setting the experiment (2014), and applying Mg and Mn as elements corresponding for the purpose. The trials were set in order to see the impact of magnesium and manganese on the quantitative properties of winter oilseed rape genotypes - Brassica napus L.. For this purpose, certain concentrations of magnesium sulphate and manganese chelate by foliar fertilizer application was applied on 3 genotype winter oilseed rape (Hybrirock, Petrol and Speed) in 5 variants, as follows: Variant 1 Control Ø NPK, Variant 2 NPK+MgSO4 25%, Variant 3 NPK+MgSO4 35%, Variant 4 NPK+Mn chelate 20%, and Variant 5 NPK+Mn chelate 30%. By specifying the appropriate fertilizers with Mg and Mn (their concentrations), except for quantitative properties, the adaptability of the tested genotypes of specific agro-climatic and soil conditions was observed and the following parameters were monitored: plant height (cm), the number of branches/plant, number of pods/plant, pod length (cm), the number of seeds in the pod and seed yield (t/ha). According to the results of the preliminary experiment can be concluded that higher concentrations of magnesium sulphate (35%) and manganese chelate (30%) leads to increased the components of yield and seed in tested genotypes. Efficiency of variants, generated by certain concentrations of fertilizers has also confirmed impact of higher concentrations; in terms of dosages and prices of yields (NPK+Mn chelate 30% and NPK+Mg SO4 35%). - Some of the metrics are blocked by yourconsent settings
Item type:Publication, The impact of using combinations of N, S and B in oilseed rape - Brassica napus L. on quantitative properties of seed(ISAF, 2017-10)• Igor Iljovski, Romina Kabranova, Zoran Dimov, Vjekoslav Tanaskovikj, Ile Canev, Tatjana PrentovicAs a result of the use of the following elements - nitrogen (N), sulphur (S) and boron (B) - quantitative properties of two genotypes of oilseed rape - Brassica napus L., Zorica (variety) and Rohan (hybrid) were determined. The main purpose of the study was determination of the production mode, set in both genotypes of oilseed rape versus managing various nutrients. An experiment was set in the Skopje region, on total experimental area of 650 m2. For this purpose, the following combinations of fertilizers were used: N1 with 110 kg/ha nitrogen, N2 with 150 kg/ha nitrogen, S1 with 30 kg/ha sulphur, S2 with 70 kg/ha sulphur, B1 with 1.0 kg/ha boron, and B2 with 2.0 kg/ha boron (at spring time, foliar application) versus standard variant: N:P:K in the ratio 10:20:30 (N 50 kg/ha, 90 kg/ha P2O5 and 180 kg/ha K2O) used in autumn. During the experiment the following parameters were monitored: height of plants (cm), number of branches per plant, number of pods per plant, length of pod (cm), number of seeds in the silique, and seed yield (t/ha). From the combinations of nutrients and variations that have been set in terms of genotypes, the results of yield showed statistical significance at level of 0.05 from variants N2PK, N2PK+S2+B2 in variety Zorica and N1PK+S1+B1 in the hybrid Rohan.