Faculty of Agricultural Sciences and Food

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End date: 2019Language: search.filters.language.English (United States)

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    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 Prentovic
    As 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.
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    Introduction of Mating Disruption Pheromones in apple orchards in Fyr of Macedonia
    (Integrated Protection of Fruit Crops IOBC-WPRS Bulletin, 2017)
    Stanislava Lazarevska, Mile Postolovski, Zoran Dimov , Sterja Naceski, Vesna Krsteska3, Shpend Shahini , Ivan Postolovski
    During the 2014 and 2015 seasons, the control of codling moth (CM), Cydia pomonella (L.), in apple orchards in Prespa Region in Fyr of Macedonia was conducted with mating disruption pheromones. The apple is a dominant crop in this region and the codling moth pressure is constantly very high. Mating disruption technique in apple orchard was utilized for the first time with a single application of Isomate C TT dispensers per season. Population density of codling moth and fruit damage at harvest were kept at a low level. At the same time, population density of the pest and fruit damage in the conventionally treated orchards were higher and was serving as a reference. Based on our results, Isomate C TT dispensers may represent a promising alternative to traditional programs trying to control high initial infestation by codling moth and should be involved in the Integrated Pest Management practices on apple crops.
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    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 Daniela
    Determination 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%).