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The research regarding some technological links took place in the Oraviţa Depression, located in south-western Romania, between 2016 and 2018. The records from the Oraviţa Meteorological Station show that the average annual rainfall in the area is 736 mm, and the average annual temperature is 10°C. The climate of this area falls within the climatic formula c.f.b.x. according to Koppen, namely in the moderate continental temperate climate. The soil type on which the experiments were performed was stagnogleyic preluvosol with a slight acidic reaction (pH 6,5 in water), a low medium humus content (2,18%) with a clay-loamy texture, favourable to the crop under study. Two bifactorial experiments were organized, with three repetitions each. We studied the behaviour of three plants originating in Romania, Serbia and Montenegro, cultivated on four levels of fertilization (N0, N30, N50 and N70 on a common background of P70K70). The results highlighted their good reaction to fertilizers. According to the average fertilization levels, the highest yield was obtained from the plant originating in Romania - 3512 kg/ha, followed by the plant originating in Serbia - 3157 kg/ha, and the one originating in Montenegro - 2931 kg/ha. The nitrogen fertilizers applied on a constant background of P70K70, on average on the three plants originating in different countries, increased the average yield of the plants originating in the three countries by 19% - 44%. We experimented on the effect of the distance between rows and the yield density. Increasing the distance between rows from 30 cm to 50 cm increased the yield by 4%, while at the distance of 70 cm the crop yield increased to 5%. Of the densities, on average on the three distances between the rows, the best results were obtained in the variant planted with 50 germinable grains/m2, in which a 10% yield was obtained, compared to the yield from the variant planted with 30 germinable grains/m2. The protein content increased with the nitrogen dosage, from 23.4% to 28.2% for the plant originating in Romania, from 22.7% to 27.3% for the plant originating in Serbia and from 23.3% to 27.8% for the plant originating in Montenegro. [ABSTRACT FROM AUTHOR]

Research was carried out between 2016 and 2018 on eutricambosol-type soil with pH5.65, low humus content of 1.37% and a rate of base saturation of 69.68%. Soil texture is medium-fine. In climate terms, according to Koppen, the climate falls under the formula c.f.b.x, characterized by a temperate climate with rainfall all year round, but with a deficit of water in the summer months. The average temperature of the year is 10.8°C. The average annual precipitation volume is 631 mm. To correct the acidic reaction of the soil amorphous dolomite was used, chemically analysed at the Nachhaltige Pflanzenproduktion Institute in Vienna, which shows that it is a calcium and magnesium mineral with a content of CaO 32.8%, CaCO3-58.5 MgO19.6%, MgCO3-40.9%. The bulletin also contains data on Copper, Zinc, Lead, Cadmium, Chromium, Nickel, and Mercury, in quantities below the worldwideaccepted tolerances. Under the conditions mentioned above, we have tested the effect of application of 2 t/ha and 4 t/ha and of fertilization with: N0N60N80N100N120, applied on a constant background of P60K60. The preliminary plant was the maize crop. During vegetation we have observed the foliage diseases (Erysiphe graminis, Puccinia recondite, Rhyncosporium secalis, Helminthosporium, Fusarium), and applied treatments to combat them - herbicides for weed control, and treatment for the prevention of plant falling. The substances used are mentioned in the paper. The cultivated variety is Nelly from Germany. The average crop yield was 12% for the 2t/ha dose and 29% for the 4t/ha variant. Nitrogen fertilizers applied in variable doses on a background of P60K60 increased the average crop yield by 23% (N60) and up to 90% (N120). The paper presents data on the evolution of the protein and starch content based on the amorphous dolomite dose and the fertilizer doses applied. [ABSTRACT FROM AUTHOR]

The research was made in the hilly area of Southwest Romania, on the territory of Caras Severin County. The researched area has a moderate continental temperate climate. According to Koppen, the climate is classified as c.f.b.x. The annual average temperature is 10.8°C and the annual average precipitation is 631 mm. The soil type on which the research was made is typical gleisoil with a pH value in water of 6.02 and a humus content of 2.56% [5]. The dolomite used in the research was chemically analyzed in Austria, at the Institute fur Nachhaltige Flanzenproduktion (Institute for Sustainable Plant Development) of Wien. The analysis bulletin showed that the analyzed calcium and magnesium mineral contained CaO 32.8%, CacO3 58.5%, MgO 19.6%, MaCO3 40.9%. The bulletin also contains data related to copper (Cu), zinc (Zn), lead (Pb), cadmium (Cd), chrome (Cr), nickel (Ni), mercury (Hg), in smaller quantities than the global permissible limits. The research focused on the effect of the dolomite applied in quantities of 2 t/ha and 4 t/ha on five levels of fertilizers with nitrogen applied on a constant basis of P100K100. The resulted harvest increase, on average on the experimented NPK doses, due to dolomite were 17% at the dosage of 2 t/ha and 28% for the 4 t/ha. The mass of 1000 kernels on average on the NPK doses increased from 345 g without dolomite to 352 g for dolomite 2 t/ha and to 358 for dolomite 4 t/ha. The content of raw protein increased by applying dolomite from 9.96% in the control sample to 10.40% on the basis with 2 t/ha and to 12.01% on the basis with 4 t/ha. The paperwork also contains the results of the analyses related to the evolution of the starch and fat content. The increase of nitrogen have a decreasing influence on starch quantity and the amount of dolomite have no effect over the decreasing trend of starch related to nitrogen amount. [ABSTRACT FROM AUTHOR]

The research was carried out in the western part of Romania, in Belinţ, a commune located in the N-E area of Timiș County. The climate is temperate continental, with an average annual temperature of 10.6°C, the heat regime being favourable to the sweet corn crop. The average annual rainfall value of 605.5 mm provides relatively good conditions for the crop under study. The type of soil is a Eutric alluvial soil, finegrained sandy-loam/medium sandy-loam, on rough fluvial materials, with a pH of 5.80 in water, and humus content 1.61%. The experiments were bi-factorial, where factor A was the cultivated hybrid (Prima - very early; Summer Delight - semi- early and Diamond - semi-late). Factor B - the agri-fund with 5 graduations (N0P80K80; N100P80K80;N150P80K80; N150P80K80+ 2t/ha of dolomite and N150P80K80+ 4t/ha). The synthesis of the harvest results shows that, on average on the fertilization levels, the lowest harvest of corn cobs was with the Summer Delight hybrid (12959 kg/ha), and the yields on Prima hybrid (13633 kg/ha) and Diamond hybrid (13767 kg/ha) were similar. The nitrogen fertilisers applied on a constant background of P80K80 increased the harvest compared to the control variant by 21% in the variant with N100, by 33% in the variant with N150, by 43% in the variant with N150+2 t/ha of dolomite and by 51% in the variant with N150+4 t/ha of dolomite. The results of the chemical analysis of grains harvested in the maturity phase in milk related to the humidity content of grains, the content of carbohydrates, protein and fat substances is rendered in the paper. [ABSTRACT FROM AUTHOR]

Research aimed at testing new PIONEER oil rape hybrids cultivated on three different fertilisation rates in the soil and climate conditions of the Banat's Plain, near Jebel, Timis County, Romania. The soil is a typical cambic chernozem, moist phreatic, pH 6.21, and 2.07% humus in the Ap horizon. The climate in the area is moderate continental with little Mediterranean and ocean influences favourable to oil rape cultivation. The trials organised between 2014 and 2016 were bifactorial, with Factor A represented by the agricultural and technical fertilisation procedures of a trial plot (a1 - N0P100K100; a2 - N100P100K100 and a3 - N200P100K100) and Factor B represented by the studied hybrids PX100CL, PT200CL, and PR45D05. Yield results show the strong impact of nitrogen fertilisation applied on a fund of P100K100: the mean increase in yield in the four hybrids was 41% in the variant fertilised with N100 and 60% in the variant fertilised with N200. The differences in yield of 938 kg/ha (N100) and 1363 kg/ha (N200) are statistically ensured as very significant. Oil content decreased with the increase of the nitrogen rate, but oil yield increased due to the increase of the seed yield. Thus, on average per trial cycle, oil content decreased from 47.3% in the variant N0 to 45.6% in the variant N200. However, oil yield increased, on average per cycle and per studied hybrids from 1,073 kg/ha in the variant N0 to 1,656 kg/ha in the variant fertilised with N200. The best yields were in the semi-early hybrid PR45D05 (3,950 kg/ha in the variant N200P100K100), while the lowest yields was in the same variant (3,311 kg/ha) in the hybrid PX100CL. Oil yield on average on the three agri-funds and in the three trial years varied between 1,302 kg/ha in the hybrid PX100CL and 1,474 kg/ha in the hybrid PT200CL. Research results point out the possibility of extending the cultivation of the experimental hybrids. [ABSTRACT FROM AUTHOR]