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Effect of different biochar on acidic soil, growth, and nutritional status of oil palm (Elaeis guineensis Jacq.) under the nursery conditionrsery condition.
88-94.Views:449Biochar is a widely known organic amendment that enhances plant growth and productivity through improving soil condition and fertility. However, plant and soil response differently to various types of biochar. Therefore, the major objective of the present study was to determine the effect of two types of biochar; vetiver grass biochar (VGB) and pineapple leaf biochar (PLB) on selected soil properties and understand their role in improving plant growth and nutritional status. Net house experimental study with oil palm (Elaeis guineensis Jacq.) seedlings was conducted at the farm unit of UiTM Samarahan campus for 240 days between November 2022 and July 2023 in order to understand the impact of different application rates (25, 50, 75, and 100%) of vetiver grass biochar and pineapple leaf biochar on selected soil properties including pH, electrical conductivity (EC), nitrogen, phosphorus, and potassium content, plant growth parameters including plant height, bole diameter, leaf number, SPAD chlorophyll content, plant dry weight, and plant’s NPK content. The experimental design used is randomized complete block design (RCBD) with 8 treatments, 3 replicates, and each replicate has 6 plants. The analysis of variance (ANOVA) and DMRT were used to analyze the collected data from soil and plant parameters. The analysis process was accomplished using SAS package (P<0.05): version 9.4 (SAS, 2013). Based on the results, vetiver grass biochar and pineapple leaf biochar enhanced soil pH, EC, and NPK content. They also improved the growth and nutritional status of oil palm seedlings. Soil enhancement was the best with 100% pineapple leaf biochar. In addition, the highest mean value of plant height, bole diameter, leaf number, SPAD chlorophyll content, plant dry weight, and plant’s NPK content was observed in plants treated with 100% pineapple leaf biochar. Therefore, vetiver grass biochar and pineapple leaf biochar have the potential to enhance acidic and poor-fertile soil, and improve oil palm seedlings growth and nutritional status.
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Comparison of the biogenic amine content of traditional and bio-wines
115-118.Views:280There has been a growing tendency in organic farming in recent years, in which organic grape growing and the production of biowine are also significant. The literature on bio-wine is rather limited, that is why we consider it really important to contribute to the data. As a result of the special conditions in organic farming we can expect bio-wines to have a different composition of nitrogen compounds from that of traditional wines. Biogenic amines could thus specially characterize bio-wines. In our research we compared the biogenic amine content of wines produced using organic methods and of those where traditional procedures were used. Our measurements have proved that it is not possible to clearly distinguish bio-wines from wines produced with traditional methods on the basis of amine content.
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Reducing nitrate content in lettuce using polyolefin-coated fertilizers
35-38.Views:230Pot experiments were conducted in order to investigate the effects of the controlled-release characteristic, nitrogen form and application method of polyolefin-coated fertilizers on the nitrate content and yield of lettuce (Lactuca sativa L.). Comparing broadcast application of polyolefin-coated urea (POCU) and urea at four fertilization levels, it was found that application of POCU decreased the nitrate content and increased the yield, due solely to its controlled-release characteristic. Comparing band applications of POCU or polyolefin-coated diammonium-phosphate (POC-DAP) to broadcast application of ammonium nitrate, it was found that a band application of both urea and ammonium containing polyolefin-coated fertilizers can decrease nitrate content in lettuce, without causing any significant yield decrease. This was a combined effect of the controlled-release characteristic and realized ammonium nutrition. Comparing effects of broadcast, band and spot applications of POC-DAP, it was found that nitrate content, was the lowest in the spot application treatment. However, considering both nitrate content and yield, band application was found to be the most effective application method.
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The effect of soil coverage on the soil quality
77-80.Views:269In this study we carried out experiments with soil samples originated from the Haschberg variety elderberry orchard and wild-growing plants from Szigetcsép Experimental Farm.
During the examinations we wanted to know how the black polyethene foliar soil coverage influences the quality of soil and the distribution of different nitrogen forms.
We studied the individual covered (foliar soil coverage for every plant), the full covered (foliar soil coverage was laid in the rows) and the uncovered threatments.
During the experiments we pointed out that the foliar coverage influences the condition of the soil unfavourably. Because of the coverage there is less air flow in soils, the lack of oxygen leads to degradating of soil life and results humus materials of poor quality.
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Floral analysis can be use as an early plant analytical tool to diagnose nutritional status of fruit trees?
23-27.Views:516A field experiment was conducted in an integrated apple orchard (Malus domestica Borkh.) established on a lowland chernozem soil in East-Hungary, to investigate if flower analysis could be used to diagnose the nutritional status of the trees. In April 2008, during full bloom, flowers and leaves were collected. Leaves were collected again in August, at the standard sampling time from the same trees. The content of nitrogen, phosphorous, potassium, calcium magnesium and boron were measured in flowers and in leaves. Correlation analyses were carried out to establish the relation s between nutrient contents in same and different plant part s. In flowers the following ratio was found between nutrients: N:P: K:Ca:Mg:B -10: l.35:7: 1.7: I :0,02. From result s it was evident that flower as organ contain significant and comparable amount of nutrients like as leaf. The N, K and Ca content were higher in leaves than in flowers at full bloom. The opposite was true for B. The P and Mg content of flower were quite equal with leaf P and Mg at full bloom . All examined nutrients were significantly affected by cultivars both in flowers and leaves. Significant correlation, was found between flower P and leaf P, flower B and leaf B (P=O.O 1) and flower K and leaf K at blooming time (P=0.05). Significant, but weaker correlation was also found between flower K and leaf K and between flower Mg and leaf Mg al JOO days after full bloom (P=0.05). Moreover, strong, but negative correlation was observed between flower B and leaf B at 100 clays after full bloom (P=O.O 1). Within flowers, the strongest positive correlation was found between Mg and B content (P=O.O 1). Strong positive correlations were also recognised between flower K and flower N, Ca and Mg and between N and Ca in the flowers (P=0.01). The strongest correlation was found between K and P in leaves at full bloom (P=O.O 1 ). Strong significant correlation was observed between N and B in the leaves collected at standard sampling time (100 DAFB) (P=0.01). Strong, but negative correlations were found bet ween leaf Mg and leaf P, K and between leaf N and leaf P at 100 days after full bloom (P=O.O 1).
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Effect of N, P, K and Mg fertilizers on some vegetative and generative parameters of a sweet cherry cultivar
27-30.Views:914This two-year-study was aimed to provide results on the effect of nitrogen, phosphorus, potassium and magnesium fertilizer treatments (control, NP, NPK, NPKMg) on vegetative and generative features of the sweet cherry cultivar ‘Carmen’. Examinations were performed in an orchard planted in 2012 on Prunus mahaleb rootstock with spacing of 5 x 2.5 m. All treatments improved the vegetative features of the sweet cherry trees in both years of 2016 and 2017. Fertilizer treated trees increased trunk cross section area (TCSA) with 51.3-63.1%, while control trees showed 48.3% trunk growth increase. Yields of control trees were lower in both years (5.9-7.2 kg/tree), than that of the fertilized trees (7.8-11.3 kg/tree). Treatments also increased the phosphorus (16-22%), magnesium (12-20%) and potassium content (3.5-18%) of the fruits compared to control treatments.
