scholarly journals The Influence of Digestate and Mineral Fertilisers on Yields and Content of Nitrates and Ascorbic Acid in Kohlrabi Bulbs

2014 ◽  
Vol 62 (1) ◽  
pp. 161-166 ◽  
Author(s):  
Tomáš Lošák ◽  
Tereza Zlámalová ◽  
Monika Vítězová ◽  
Jaroslav Hlušek ◽  
Petr Škarpa ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Quality Parameters ◽  
The Other ◽  
Control Treatment ◽  
Nitrate Content ◽  
Fresh Matter ◽  
Urea Treatment ◽  
Yield And Quality ◽  
One Year ◽  
Small Content

In a one-year vegetation pot experiment we compared the effect of the digestate from a biogas plant and mineral fertilisers on yield and quality parameters of kohlrabi, variety Moravia. Four treatments were used in the trial: 1) untreated control, 2) urea, 3) digestate, 4) urea, triple super phosphate, KCl, MgSO4. The rate of N was the same in treatments 2–4, i.e. 1.5 g N/pot. In treatment 4 the rate of P, K and Mg corresponded with the rate of these nutrients in the digestate treatment (3). The inhibited growth of kohlrabi after the application of NPKMg (4) was obviously the consequence of early planting after the application of fertilisers (5 days) and of the salinity of the small content of soil in the pot and resulted in the lowest weight of single bulbs (69 g), followed by the unfertilised control treatment (75 g). After the application of the digestate (treatment 3) the weight of single bulbs significantly increased (126 g) compared to the urea treatment (101 g) and all the other treatments. The content of ascorbic acid in the fertilised treatments did not differ (441–458 mg/kg) but it increased significantly compared to the unfertilised treatment (398 mg/kg). There were significant differences among all the fertilised treatments (1–2–3–4) in the bulb nitrate content (346–1,147–815–1,091 mg NO3−/kg fresh matter, respectively). After digestate application their content decreased significantly to 815 mg NO3−/kg fresh matter. Digestate treatment resulted in comparable or better yields and qualitative parameters compared to all the other treatments.

scholarly journals Comparison of the effectiveness of digestate and mineral fertilisers on yields and quality of kohlrabi (Brassica oleracea, L.)

2011 ◽  
Vol 59 (3) ◽  
pp. 117-122 ◽  
Author(s):  
Tomáš Lošák ◽  
Andrea Zatloukalová ◽  
Monika Szostková ◽  
Jaroslav Hlušek ◽  
Jiří Fryč ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Ascorbic Acid Content ◽  
Quality Parameters ◽  
Nitrate Content ◽  
Fresh Matter ◽  
Urea Treatment ◽  
Yield And Quality ◽  
Triple Super Phosphate ◽  
One Year

In a one-year vegetation pot experiment we compared the effect of the digestate from a biogas station and mineral fertilisers on yield and quality parameters of kohlrabi, variety Seguza. Four treatments were used in the trial: 1) untreated control, 2) urea, 3) digestate, 4) urea, triple super phosphate, KCl, MgSO4. The rate of N was the same in treatments 2–4, 1.5 g N/pot. In treatment 4 the rate of P, K and Mg corresponded with the rate of these nutrients in the digestate treatment (3). The weight of single bulbs of the control unfertilised treatment were significantly the lowest (22.9%), as well as the nitrate (6.0%) and ascorbic acid content (66.2%) compared to the urea treatment (100%) and the other fertilised treatments. After the application of the digestate (treatment 3) and mineral fertilisers (treatment 4) the weight of single bulbs significantly increased by 27.9 and 29.2%, respectively, compared to the urea treatment (2). The content of ascorbic acid in the fertilised treatments did not differ (772–789 mg/kg) but it increased significantly compared to the unfertilised treatment (511 mg/kg). There were no significant differences between the two treatments fertilised with mineral fertilisers in the bulb nitrate content (678 and 641 mg NO3−/kg fresh matter, respectively). After digestate application their contents decreased significantly to 228 mg NO3−/kg fresh matter. Digestate treatment resulted in comparable or better yield and qualitative parameters compared to treatment with mineral fertilisers.

scholarly journals What is More Suitable for Kohlrabi Fertilization – Digestate or Mineral Fertilizers

2015 ◽  
Vol 63 (3) ◽  
pp. 787-791
Author(s):  
Tomáš Lošák ◽  
Jaroslav Hlušek ◽  
Hana Bělíková ◽  
Monika Vítězová ◽  
Tomáš Vítěz ◽  
...  
Keyword(s):  
Quality Parameters ◽  
The Other ◽  
Nitrate Content ◽  
Mineral Fertilizers ◽  
Triple Superphosphate ◽  
Fresh Matter ◽  
Urea Treatment ◽  
Yield And Quality ◽  
N Dose ◽  
One Year

In a one-year vegetation pot experiment, we compared the effect of digestate from a biogas station and mineral fertilisers on yield and quality parameters of kohlrabi, variety Moravia. Four treatments were used in the trial: 1) untreated control, 2) urea, 3) digestate, 4) urea, triple superphosphate, KCl, MgSO4. The N dose was the same in treatments 2–4, 1.5 g N/pot. In treatment 4 the P, K and Mg doses corresponded to those supplied in the digestate treatment (3). The weight of single kohlrabi bulbs in the unfertilised control was significantly lower (39.2%) than in the urea treatment (100%) and the other fertilised treatments. After application of digestate (treatment 3) and mineral fertilisers (treatment 4), the weight of single bulbs significantly increased by 18.6 and 25.2%, respectively, compared with the urea treatment (2). The content of ascorbic acid did not differ among the all four treatments (274–291 mg/kg). There were significant differences between all fertilised treatments (2, 3, 4) in bulb nitrate content (792, 327, 776 mg NO3−/kg fresh matter, respectively). The content of nitrates was the lowest in the unfertilised treatment – 135 mg NO3−/kg fresh matter. After digestate application the nitrate content decreased significantly, to 327 mg NO3−/kg fresh matter. We recommend the use of digestate to kohlrabi as it results in comparable or better yield and qualitative parameters of kohlrabi compared with mineral fertilizers.

scholarly journals Digestate is equal or a better alternative to mineral fertilization of kohlrabi

2012 ◽  
Vol 60 (1) ◽  
pp. 91-96 ◽  
Author(s):  
Tomáš Lošák ◽  
Ludmila Musilová ◽  
Andrea Zatloukalová ◽  
Monika Szostková ◽  
Jaroslav Hlušek ◽  
...  
Keyword(s):  
Quality Parameters ◽  
Nitrate Content ◽  
Mineral Fertilizers ◽  
Mineral Fertilization ◽  
Fresh Matter ◽  
Urea Treatment ◽  
Yield And Quality ◽  
Triple Super Phosphate ◽  
N Dose ◽  
One Year

In a one-year vegetation pot experiment, we compared the effect of digestate from a biogas station and mineral fertilisers on yield and quality parameters of kohlrabi, variety Segura F1. Four treatments were used in the trial: 1) untreated control, 2) urea, 3) digestate, 4) urea, triple super phosphate, KCl, MgSO4. The N dose was the same in treatments 2–4, 1.5 g N/pot. In treatment 4 the P, K and Mg doses corresponded to those supplied in the digestate treatment (3). The weight of single kohlrabi bulbs in the unfertilised control was significantly lower (36.2%) than in the urea treatment (100%) and the other fertilised treatments. After application of digestate (treatment 3) and mineral fertilisers (treatment 4), the weight of single bulbs significantly increased by 36.2 and 33.6%, respectively, compared with the urea treatment (2). The content of ascorbic acid did not differ between the fertilised treatments (282–301 mg/kg), but was significantly lower than in the unfertilised control (334 mg/kg). There were significant differences between all fertilised treatments (2, 3, 4) in bulb nitrate content (745, 187, 462 mg NO3−/kg fresh matter, respectively). After digestate application the content decreased significantly, to 187 mg NO3−/kg fresh matter. The soil Nmin content after harvest varied between 4.19–5.79 mg/kg in all fertilised treatments and the N-NH4+ form prevailed over N-NO3− only in the digestate treatment (3.45/2.34 mg/kg). We recommend the use of digestate to kohlrabi as it results in comparable or better yield and qualitative parameters of kohlrabi compared with mineral fertilizers.

scholarly journals Using Soil and Foliar Applications of some Fertilizers to Improve the Yield and Quality Parameters of Table Grapes (Vitis vinifera L.)

2020 ◽  
Vol 77 (1) ◽  
pp. 1
Author(s):  
Hisham ABO-AHMEDEH ◽  
Amer MHASNEH ◽  
Hamzeh RAWASHDEH
Keyword(s):  
Foliar Application ◽  
Fertilizer Application ◽  
Quality Parameters ◽  
Control Treatment ◽  
Vitis Vinifera L ◽  
Foliar Fertilizer ◽  
Soil Application ◽  
Application Method ◽  
Table Grapes ◽  
Yield And Quality

The objective of the current study was to investigate the effect of soil and foliar application of some fertilizers on the yield and quality of table grapes cv. Alkdarri. Soil and foliar fertilizer application treatments included a control, Ca 200 g/vine, K 150 g/vine, N 200 g/vine, Ca 30 g/L, grow more INC fertilizer 10 g/L, K 20 g/L, and Cu 5 mg/L. Results indicate that soil and foliar fertilizer application increases quality and quantity of table grapes compared to control treatment. The highest berry diameter, a weight of 100 berries and a size of 100 berries were obtained in vines treated with Ca 200 g/vine, using the soil application method. The highest cluster weight was obtained in vines that were treated with K 150 g/vine, using the soil application method. The highest berry firmness was obtained in vines that were treated with K 20 g/L using the foliar application method. The highest pH and TSS were obtained in vines treated with Cu 5 mg/L, using the foliar application method. The highest fruit yield was found in vines that were treated with 150 g K.

scholarly journals The yield and quality of broccoli grown under flat covers with soil mulching

2014 ◽  
Vol 60 (No. 5) ◽  
pp. 228-233 ◽  
Author(s):  
E. Kosterna
Keyword(s):  
Ascorbic Acid ◽  
Dry Matter ◽  
Nutritive Value ◽  
Ascorbic Acid Content ◽  
Chemical Components ◽  
Marketable Yield ◽  
Fresh Matter ◽  
Organic Mulch ◽  
Yield And Quality ◽  
Rye Straw

The experiment was carried out between 2010 and 2012. Effect of plants covering and the kind of organic mulch applied to soil mulching on the yield and selected component of nutritive value in Milady F<sub>1</sub> broccoli cultivated for early harvest was investigated. The application of polypropylene fibre contributed to a significant increase in the marketable yield of broccoli on average by 5.25 t/ha, weight of head by 0.10 kg and length of arc by 1.44 cm. Increase of the content of chemical components as a result of plants covering amounted to 1.76% for dry matter,&nbsp;2.50 mg/100 g fresh matter (FM) for ascorbic acid, 0.65% FM for total sugar and 0.15% FM for monosaccharides. All kinds of straw contributed to an increase in the broccoli yield and improvement its parameters. The highest marketable yield and weight of head was obtained in the plots mulched with buckwheat straw. Irrespective of covering, cultivation on the mulch with buckwheat straw contributed to a slight decrease in dry matter, total sugars content, whereas cultivation on the rye straw decreased ascorbic acid content.

scholarly journals The effects of PLA biodegradable and polypropylene nonwoven crop mulches on selected components of tomato grown in the field

2014 ◽  
Vol 26 (2) ◽  
pp. 163-167 ◽  
Author(s):  
Izabela Zawiska ◽  
Piotr Siwek
Keyword(s):  
Ascorbic Acid ◽  
Dry Matter ◽  
Soluble Sugar ◽  
Soluble Sugars ◽  
Growing Season ◽  
Field Studies ◽  
Nitrate Content ◽  
Yield And Quality ◽  
Cotyledon Stage

ABSTRACT The results of two years (2010-2011) of field studies using two types of nonwoven mulches (one biodegradable, polylactic acid PLA 54 g m-2, and traditional polypropylene PP 50 g m-2) on the yield and quality of tomato are presented. Seeds of tomato (‘Mundi’ F1) were sown in a greenhouse, in containers filled with perlite and sand, and then the plants at the cotyledon stage were replanted in multipot trays filled with substrate for vegetable plants. In the last week of May, seedlings were planted on mulches in the field at a spacing of 50 × 100 cm. The mulch was maintained throughout the growing season. A plot that remained unmulched served as the control. Tomatoes were harvested once a week. The fruits were evaluated for L-ascorbic acid, dry matter, soluble sugars and nitrate content. In 2011, the analysis of the plant material showed that the concentration of L-ascorbic acid was about 23% higher in the tomato fruits harvested from plants grown on biodegradable PLA 61 g m-2 mulch in comparison to the control. A similar effect was demonstrated for the soluble sugar concentration in 2011 for both types of nonwovens.

scholarly journals The effect of foliar fertilization on the yield and quality parameters of maize grain

2018 ◽  
Vol 6 (1-2) ◽  
pp. 195-199
Author(s):  
Péter Jakab ◽  
Gábor Zoltán ◽  
Dávid Festő ◽  
Levente Komarek
Keyword(s):  
Quality Parameters ◽  
Control Treatment ◽  
Maize Production ◽  
Vegetative Period ◽  
Foliar Fertilization ◽  
Yield And Quality ◽  
Small Plot ◽  
Variant Analysis ◽  
Maize Grain ◽  
Scientific Results

In our small plot experiment, we examined the effect foliar fertilization on the yield and quality parameters of maize grain in 2016. The experiment was set in three replications, random blocks on the area of Tangazdaság Ltd. in Hódmezővásárhely. The soil of the experiment was meadow chernozem. We sprayed out three different foliar fertilizer products individually and combined with each other as well, so there were six treatments and the control to be examined. The year 2016 was favourable for maize production. In 2016 the amount of precipitation in the vegetative period of corn was higher by 23.7 mm than the average. We processed the obtained data by single factor variant analysis. We obtained 11.37 t/ha in control treatment, and with the foliar fertilization the yield ranged between 11.61-12.86 t/ha. The foliar fertilization products increased the yield of corn, but this difference was not significant. By the application of foliar fertilization, the qualty parameters of maize grain improved in many cases. Our scientific results proved, that foliar fertilization had god effect on the yield and quality parameters of maize.

scholarly journals Effect of Light-Emitting Diodes (LEDs) on Some Physical and Bioactive Compounds of ‘Iceberg’ Lettuce (Lactuca Sativa L.)

2021 ◽  
Vol 4 (1) ◽  
pp. 21-30
Author(s):  
Asmaa Sayed Ahmed ◽  
Arshad Abdulkhalq Yaseen ◽  
Triska Dlshad Bakr
Keyword(s):  
Chlorophyll Content ◽  
Lactuca Sativa ◽  
Light Emitting Diodes ◽  
Quality Parameters ◽  
The Other ◽  
Carotenoid Content ◽  
Nitrate Content ◽  
Light Emitting ◽  
Iceberg Lettuce ◽  
Led Lights

Abstract The use of light-emitting diodes (LEDs) is a recent concerned application in the indoor crop system of the modern plant production. In our research, we evaluated the influence of four monochromic LED lights including 100% White (W), Yellow (Y), Red (R) and Blue (B) in comparison to solar lightening condition (GR) as a control. In this regard, some morphological characteristics and biochemical content of the common outdoor ‘Iceberg’ lettuce (Lactuca sativa L.) was measured. The results show that leaf length, leaf area and total head weight were significantly greater in the plants grown under B LED, while all the other physical parameters were significantly higher in the plants grown under GR environmental conditions. On the other hand, chlorophyll (Chl), carotenoids (Car), and nitrate content were also influenced by different light treatments. Plants grown under LED light treatment resulted in significantly higher chlorophyll content compared to the control. However, significantly greater carotenoid content was in the plants grown under GR condition. The highest total chlorophyll content was recorded under B and R LED, whereas the lowest was in the GR condition. The lowest nitrate content in the blade and petiole was recorded in the plants grown under Y LED, while the highest nitrate content was recorded in the GR. Based on our result, it is possible to grow and improve some quality parameters of common outdoor ‘iceberg’ lettuce under LED where the solar light is limited or unavailable. Thus, plants performed better under GR light conditions than monochromic LEDs; however, some LED lights could improve some quality parameters and biochemical contents in the ‘iceberg’ lettuce variety.

scholarly journals Lettuce production in greenhouse under fertirrgation with nitrogen and potassium silicate

2017 ◽  
Vol 39 (2) ◽  
pp. 211 ◽  
Author(s):  
Renan Soares de Souza ◽  
Roberto Rezende ◽  
Tiago Luan Hachmann ◽  
Cláudia Salim Lozano ◽  
André Felipe Barion Alves Andrian ◽  
...  
Keyword(s):  
Experimental Design ◽  
Factorial Design ◽  
Irrigation System ◽  
Potassium Silicate ◽  
The Other ◽  
Control Treatment ◽  
Fresh Matter ◽  
Number Of Leaves ◽  
Micro Irrigation ◽  
Best Responses

The objective of this study was to evaluate the effect of nitrogen and potassium silicate on the production and commercial aspects of curly lettuce, Vera cultivar. The experimental design was completely randomized (CRD), with ten treatments and three replications. The treatments, arranged in a factorial design according to the Plan Puebla III matrix (Turrent & Laird, 1975), consisted of the combination of five doses of nitrogen (9; 54; 90; 126, and 171 kg ha-1) and five doses of potassium silicate (1.15; 6.90; 11.50; 16.10, and 21.85 kg ha-1). A control treatment without application of nitrogen and potassium silicate was also inserted. The crop was grown in a greenhouse, and the doses were applied as sidedressing using a drip micro-irrigation system. Total fresh matter, commercial fresh matter, non-commercial fresh matter, number of leaves and commercial trade index were evaluated. The commercial fresh matter and the number of commercial leaves per plant were affected only by nitrogen fertigation and increased linearly with an increase in the dose of nitrogen, with the best responses observed at the highest dose of this element (171 kg ha-1). Potassium silicate only had an effect on non-commercial fresh matter, with no influence on the other characteristics. 

scholarly journals Cowpea Crop Response to Mineral and Organic Fertilization in SE Spain

Processes ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 822
Author(s):  
Virginia Sánchez-Navarro ◽  
Raúl Zornoza ◽  
Ángel Faz ◽  
Juan Antonio Fernández
Keyword(s):  
Soil Fertility ◽  
Crop Yield ◽  
Total Nitrogen ◽  
Nutritional Composition ◽  
The Other ◽  
Organic Fertilizers ◽  
Nitrate Content ◽  
Organic Fertilization ◽  
Yield And Quality ◽  
Other Hand

Mineral fertilization is considered to be useful for improving soil fertility and yields. However, its use is linked to global warming and soil and water pollution by its rapid mobilization. On the other hand, organic fertilization is recommended to maintain or improve soil organic carbon and total nitrogen stocks while contributing to climate change mitigation. The main goal of this study was to assess the effect of two different fertilizer types, mineral and organic, during three cowpea crop cycles on the soil’s physicochemical properties, enzyme activities, crop yield, crop quality and nutritional composition when considering two cowpea cultivars (Feijão frade de fio preto (FP) and Feijão frade de fio claro (FC)). The use of mineral fertilizers was seen to contribute to improved soil fertility due to the increase in soil properties, such as recalcitrant carbon, total nitrogen, ammonium content, available K and available Mg. On the other hand, organic fertilizers only increased the nitrate content in the soil. There were no differences in terms of cowpea crop yield, quality and nutritional composition by fertilizer type. Thus, both fertilizer types contributed to the same crop yield and quality, and thus the use of organic fertilizers can result in a sustainable alternative for maintaining cowpea crop yield and quality.

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