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Articoli di riviste sul tema "Nitrogen and calcium level"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 1 febbraio 2022

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1

Ozgen, Senay, Mustafa Ozgen, and Jiwan P. Palta. "556 Influence of Supplemental Calcium Fertilization on Potato Tuber Size and Tuber Number." HortScience 34, no. 3 (June 1999): 542B—542. http://dx.doi.org/10.21273/hortsci.34.3.542b.

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Several recent studies, including from our laboratory, have provided evidence that by improving tuber calcium level, we can improve tuber quality such as low internal defects and better storability. The purpose of this study was to be determine the influence of supplemental calcium fertilization on tuber size and tuber number. For this purpose, plantlets of Solanum tuberosum cv. Russet Burbank raised in tissue culture were planted in 20-L pots filled with sandy loam soil with pH of 6.9 and soil calcium level of 350 ppm. All treatments received same total amount of nitrogen (at the rate of 280

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2

Diggle, AJ, and JW Bowden. "The response of wheat tops and roots grown in a leaching environment to rates of nitrogen added as calcium nitrate or organic residues containing 1, 2 or 6% nitrogen." Australian Journal of Agricultural Research 42, no. 7 (1991): 1053. http://dx.doi.org/10.1071/ar9911053.

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Wheat was grown under leaching conditions in a glasshouse in columns of a loamy sand soil to which nitrogen had been added in the form of calcium nitrate or organic materials containing 1, 2 or 6% nitrogen. All materials were added at a range of rates calculated on an elemental nitrogen basis, so that comparisons could be made between materials at the same level of nitrogen addition. The amount of mineral nitrogen in the soil profile 4 weeks after seeding increased with the addition of each of the sources except for the 1% nitrogen organic material which had no effect. Addition of calcium nitr

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3

Rosado, Thiago Lopes, Ivoney Gontijo, Marcelo Suzart Almeida, Alberto Chambela Neto, and Carla Penha Simon. "PRODUCTION AND TILLERING OF MOMBAÇA GRASS WITH DIFFERENT SOURCES AND LEVELS OF APPLIED NITROGEN." REVISTA ENGENHARIA NA AGRICULTURA - REVENG 24, no. 2 (July 1, 2016): 139–46. http://dx.doi.org/10.13083/reveng.v24i2.664.

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Nitrogen influences numerous physiological and morphological traits of forage grasses, which ultimately interfere directly with production and forage quality. Aimed to study was to evaluate the production of dry matter and the number of tillers of Panicum maximum cv. Mombaça grown with different sources and levels of applied nitrogen. The experiment was conducted at the Federal Institute of the Espírito Santo, Campus of Santa Teresa. The experimental design consisted of a randomised block design with three replicates in a 3 x 6 factorial design and three nitrogenous fertilizers (urea, ammonium

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4

Grieve, Catherine M., James A. Poss, Peter J. Shouse, and Christy T. Carter. "Modeling Growth of Matthiola incana in Response to Saline Wastewaters Differing in Nitrogen Level." HortScience 43, no. 6 (October 2008): 1787–93. http://dx.doi.org/10.21273/hortsci.43.6.1787.

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The capture and reuse of nutrient-rich greenhouse effluents may be an environmentally sound option for floriculture production, which would conserve fresh water resources and reduce off-site pollution of surface and groundwaters. This study was initiated in 24 outdoor lysimeters to determine effects of salinity and varying concentrations of nitrogen on the growth, yield, and ion relations of stock [Matthiola incana (L.) R. Br.] cultivar Cheerful White. The experiment was a 4 × 4 factorial, partially replicated design with four irrigation water salinities (2, 5, 8, and 11 dS·m−1) and four nitra

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5

Bojtor, Csaba, Árpád Illés, Seyed Mohammad Nasir Mousavi, Adrienn Széles, Brigitta Tóth, János Nagy, and Csaba L. Marton. "Evaluation of the Nutrient Composition of Maize in Different NPK Fertilizer Levels Based on Multivariate Method Analysis." International Journal of Agronomy 2021 (April 1, 2021): 1–13. http://dx.doi.org/10.1155/2021/5537549.

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One of the critical issues in using micronutrient fertilisers is the comparison of methods and amounts of fertiliser use, which is very important from the aspect of increasing production and economic viewpoint. The aim of this research was to analyse the nutrient composition of different parts of the maize (Zea mays L. FAO 490) during the growing season with six-level nitrogen fertilisation supplies at five phenological stages. The study included essential nutrients as nitrogen (N), phosphorus (P), potassium (K), and sulphur (S) (in first cluster) and calcium (Ca) and magnesium (Mg) (in second

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6

Conley, M. Elizabeth, and Ellen T. Paparozzi. "Macroand Micronutrient Levels Associated with Nitrogen and Sulfur Applications to `Freedom Red' Poinsettia." HortScience 32, no. 3 (June 1997): 444E—445. http://dx.doi.org/10.21273/hortsci.32.3.444e.

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In order to understand the effects of reduced nitrogen and sulfur on overall poinsettia plant growth and development, experiments were run to determine the relationship, if any, between nitrogen and sulfur applied and other macroand micronutrients. Cuttings of `Freedom Red' (Euphorbia pulcherrima Willd. ex Klotzsch) were grown vegetatively in a peat:perlite:vermiculite mix during the fall and spring. Three levels of sulfur (0, 12.5, 25 ppm) were applied in combination with four levels of nitrogen (50, 100, 200, 275 ppm). The experimental design was a randomized complete block. Leaf samples wer

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7

SWIATKIEWICZ, S., J. KORELESKI, and A. ARCZEWSKA-WLOSEK. "Egg performance, egg quality, and nutrient utilization in laying hens fed diets with different levels of rapeseed expeller cake." Agricultural and Food Science 19, no. 3 (December 4, 2008): 233. http://dx.doi.org/10.2137/145960610792912594.

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The aim of this study was to evaluate the effect of different levels of rapeseed expeller cake (RC) in the diet of laying hens on egg performance, egg quality, retention and excretion of nitrogen, calcium and phosphorus, and metabolizability of energy. The experiment was carried out with 72 Bovans Brown hens, from 28 to 53 weeks of age. Experimental treatment consisted of four isonitrogenous and isocaloric corn-soybean diets (as calculated: 17% crude protein, 11.6 MJ/kg metabolizable energy, 0.81% lysine, 0.36% methionine, 3.60% calcium and 0.37% available phosphorus), containing 0, 4, 6 or 8%

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8

Li, Y., T. Wang, J. Li, and Y. Ao. "Effect of phosphorus on celery growth and nutrient uptake under different calcium and magnesium levels in substrate culture." Horticultural Science 37, No. 3 (July 14, 2010): 99–108. http://dx.doi.org/10.17221/81/2009-hortsci.

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A greenhouse pot experiment was performed to study the effect of phosphorus (P) on celery (Apium graveolens L.) growth, quality and nutrient uptake under different calcium (Ca) and magnesium (Mg) levels in substrate culture. Results showed that there were significant interactions between P and the level of Ca and Mg in the growing media. Celery above-ground fresh weight, total dry biomass, leaf area, and P, Ca and Mg concentrations in celery leaves significantly increased from 0 to 124 mg/l P application. The opposite trends were observed for root/shoot ratio, leaf chlorophyll, carotenoids, so

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9

Pavlíková, D., M. Neuberg, E. Žižková, V. Motyka, and M. Pavlík. " Interactions between nitrogen nutrition and phytohormone levels in Festulolium plants." Plant, Soil and Environment 58, No. 8 (August 21, 2012): 367–72. http://dx.doi.org/10.17221/367/2012-pse.

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&nbsp; This study aims to reveal and to compare effect of two various systems of nitrogen nutrition, namely injection and sidedress application, on the levels of NO3&ndash; and phytohormones (cytokinins, abscisic acid (ABA), indole-3-acetic acid (IAA)) in Festulolium plants. Calcium nitrate (CN) or ammonium sulphate (AS) were used as N source in the pot experiment. The yield of Festulolium above and below ground biomass was more substantially enhanced after sidedress application of both AS or CN in comparison with injection application. The levels of endogenous cytokinins peaked 5 days

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10

Santos-de-Souza, Daniele, Lígia Fátima Lima-Calixto, Marina Jorge-de-Lemos, Túlio Leite-Reis, Carlos Augusto Oliveira, Édson José Fassani, Maria Clara Do-Coutto-Prado-Valladares, and Felipe Dilelis De Resende Sousa. "Inclusion of kaolin in the feed of Japanese quails during the production phase." Revista Colombiana de Ciencias Pecuarias 32, no. 4 (November 7, 2019): 274–84. http://dx.doi.org/10.17533/udea.rccp.v32n4a03.

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Background: Kaolin may improve quail performance by maintaining intestinal integrity and improving nutrient absorption. Objective: To evaluate the overall performance, egg quality, moisture, nitrogen and calcium content in the excreta, intestinal morphology and financial analysis of kaolin in Japanese quail feed during the production phase. Methods: A total of 192 Japanese quails, distributed in a completely randomized design with four treatments and six repetitions with eight birds each, were used. Kaolin levels added to the diet were 0, 1.5, 3.0, and 4.5%. Results: Kaolin reduced feed consum

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11

Diomandé, L. B., G. R. Soro, S. Soro, and Et Yao Kouamé A. "CHEMICAL SOIL FERTILITY DIAGNOSIS FOR COTTON CROPPING IN NORTHERN COTE D'IVOIRE." International Journal of Research -GRANTHAALAYAH 9, no. 8 (August 31, 2021): 27–34. http://dx.doi.org/10.29121/granthaalayah.v9.i8.2021.4130.

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The work was conducted in the north of Cote d’Ivoire, central pivot cotton production savannah area, to make the diagnosis of soil fertility for cotton cropping. Cotton cropping, the mainstay of the savannah's economy, suffered from low productivity in relation to the soils chemical properties. Prior cultivation, soils samples were collected at a depth of 0 to 30 cm, collecting 32 simple samples to generate a complete sample. The samples were sent to the soil laboratory to measure the pH unities, CEC, nitrogen, phosphorus, potassium, calcium, magnesium, sodium, iron, zinc, copper and manganese

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12

TAKAHASHI, NORIHIRO, TETSUO SHOJI, KEISUKE MATSUBARA, HIROFUMI HITOMI, MAYUKO HASHIMOTO, HIDEYASU KIYOMOTO, KOICHI UCHIDA, et al. "Effect of Histamine H2-Receptor Antagonist on the Phosphorus-Binding Abilities of Calcium Carbonate and Calcium Lactate in Hemodialysis Patients." Journal of the American Society of Nephrology 10, no. 5 (May 1999): 1090–94. http://dx.doi.org/10.1681/asn.v1051090.

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Abstract. The effect of histamine H2-receptor antagonist (famotidine) on the phosphorus-binding abilities of calcium carbonate and calcium lactate were examined in 13 chronic hemodialysis patients. In seven patients receiving calcium carbonate, famotidine (20 mg/d) was given because of gastroduodenal disorders, and calcium carbonate was replaced with calcium lactate as a phosphorus binder after 4 wk of treatment with famotidine. With the 4-wk administration of famotidine accompanied by calcium carbonate, the serum phosphorus level increased from 6.3 ± 0.9 to 7.1 ± 0.5 mg/dl (P < 0.05). Howe

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13

Nurdogan, Yakup, and William J. Oswald. "Enhanced nutrient removal in high-rate ponds." Water Science and Technology 31, no. 12 (June 1, 1995): 33–43. http://dx.doi.org/10.2166/wst.1995.0453.

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High-rate ponding (HRP) processes have evolved from conventional oxidation ponds and could play an important role in the treatment of organic wastewaters in sunbelt communities requiring tertiary treatment. HRP systems are very efficient in removing biochemical oxygen demand, nitrogen, and phosphorus. Mineralized nitrogen is removed by algal uptake of ammonium ion (NH4+) and out-gassing of ammonia (NH3). High daytime pH generated in the pond due to algal uptake of bicarbonate shifts the equilibrium in favor of NH3. There are also two mechanisms for phosphorus removal in an HRP; algal uptake an

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14

Ozgen, Senay, Christopher Gunter, Bjorn Karlsson, and Jiwan Palta. "590 Supplemental Application of Calcium and Nitrogen Improves Internal Quality of `Russet Burbank' Potatoes." HortScience 35, no. 3 (June 2000): 498C—498. http://dx.doi.org/10.21273/hortsci.35.3.498c.

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Potato tuber tissue is calcium-deficient. Consequently, increasing Ca concentration is desirable to improve tuber quality. The purpose of the present study was to determine the influence of supplemental Ca and N fertilization on internal quality of potato. Three products (calcium nitrate, calcium chloride, and gypsum) were used to increase tuber calcium concentration. We tested combinations of both soluble sources of calcium and gypsum. Each treatment had five replications and received same total amount of N, supplied either from ammonium nitrate, liquid N (UAN: 50% urea + 50% ammonium nitrate

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15

Le Rü, B., J. P. Diangana, and N. Beringar. "Effects of nitrogen and calcium on the level of resistance of cassava to the mealybug P. manihoti." International Journal of Tropical Insect Science 15, no. 01 (February 1994): 87–96. http://dx.doi.org/10.1017/s1742758400016805.

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16

Kubik-Dobosz, Genowefa. "The influence of potassium and calcium ions on nitrogen metabolism of cucumber seedlings." Acta Societatis Botanicorum Poloniae 50, no. 3 (2014): 437–47. http://dx.doi.org/10.5586/asbp.1981.067.

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It was found that K<sup>+</sup> or Ca<sup>2+</sup> deficiency in a nitrate or ammonium medium increased the amount of accumulated total and non-protein nitrogen in some organs of cucumber seedlings, as also caused changes in accumulated potassium and calcium. Lack of K<sup>+</sup> or Ca<sup>2+</sup> in a medium which did not contain nitrogen led to an increased level of glutamate dehydrogenase, alanine aminotransferase and aspartate aminotransferase activity in the cotyledons and roots of cucumbers. Similar changes in the activity of these enzyme

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17

Kleinhenz, Matthew D., Jiwan P. Palta, Christopher C. Gunter, and Keith A. Kelling. "Impact of Source and Timing of Calcium and Nitrogen Applications on `Atlantic' Potato Tuber Calcium Concentrations and Internal Quality." Journal of the American Society for Horticultural Science 124, no. 5 (September 1999): 498–506. http://dx.doi.org/10.21273/jashs.124.5.498.

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Three Ca sources and two application schedules were compared for their effectiveness for increasing tissue Ca concentrations in 170 to 284 g field-grown tubers of `Atlantic' potato (Solanum tuberosum L.). Additional observations were made of internal physiological defects. Paired measures of tissue (periderm and nonperiderm) Ca concentration and internal quality (±hollow heart, ±internal brown spot) were made on individual tubers produced in plots fertilized with N at 224 kg·ha-1 and Ca at either 0 or 168 kg·ha-1, supplied from either gypsum, calcium nitrate or NHIB (9N-0P-0K-11Ca, a commercia

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18

Heinrichs, Reges, Fernanda Grecco Grano, Leda Gobbo de Freitas Bueno, Cecílio Viega Soares Filho, Jailson Lara Fagundes, Melina Daniel Rebonatti, and Katia de Oliveira. "Brachiaria sp yield and nutrient contents after nitrogen and sulphur fertilization." Revista Brasileira de Ciência do Solo 37, no. 4 (August 2013): 997–1003. http://dx.doi.org/10.1590/s0100-06832013000400017.

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Among the production factors, adequate fertilization is an important tool to raise the productivity of pastoral systems and consequently increase the share of Brazil in the supply chain of primary agricultural products at the global level. The objective of this study was to evaluate the interaction of nitrogen and sulfur fertilization in BRACHIARIA DECUMBENS: Stapf. The experiment in pots with Dystrophic Oxisol was evaluated in a completely randomized design with four replications in a 5 x 3 factorial arrangement, involving five N doses (0, 100, 200, 400, and 800 mg dm-3) in the form of ammoni

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19

Balla Kovács, Andrea, Anita Szabó, and Emese Bartáné Szabó. "Studies of the influences of different N fertilizers and Microbion UNC bacterial fertilizer on the nutrient content of soil." Acta Agraria Debreceniensis, no. I (October 5, 2010): 134–40. http://dx.doi.org/10.34101/actaagrar/i/8391.

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A field experiment was conducted to examine the effects of different nitrogen fertilizers in combination with bacterial fertilizer onnutrient uptake of horseradish and plant available nutrients of the soil. Three different N fertilizers, ammonium-nitrate, urea and calciumnitrate(116 kg ha-1 N) in combination with Microbion UNC bacterial fertilizer (2 kg ha-1) were applied as treatments in a randomizedcomplete block design in three replications. In this paper we presented the results of soil measurements. The soil of the experimental areawas chernozem with medium sufficiency level of N and P an

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Tooley, Joshua A., Harley Naumann, and David G. Mendoza-Cozatl. "PSVII-18 Nitrogen fertilization affects leaf-level sodium and potassium concentration in tall fescue pasture." Journal of Animal Science 97, Supplement_3 (December 2019): 301. http://dx.doi.org/10.1093/jas/skz258.608.

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Abstract Optimizing mineral supplementation is critical to maximizing production in a forage-based beef production system. The effect of nitrogen fertilization on mineral accumulation in tall fescue (TF) is not well understood. We evaluated the differences in mineral composition in nitrogen fertilized (TF+N) and unfertilized (TF-N) tall fescue pastures. The experiment was conducted at the University of Missouri Forage Systems Research Center during 2017 and 2018. A randomized complete block design was arranged in novel-endophyte TF pastures. All pastures were mechanically harvested in May. Nit

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21

Lavon, Ruth, Raphael Salomon, and Eliezer E. Goldschmidt. "Effect of Potassium, Magnesium, and Calcium Deficiencies on Nitrogen Constituents and Chloroplast Components in Citrus Leaves." Journal of the American Society for Horticultural Science 124, no. 2 (March 1999): 158–62. http://dx.doi.org/10.21273/jashs.124.2.158.

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The chlorotic appearance of mineral-deficient citrus leaves presumably reflects degradative changes in chloroplast components, most of which have nitrogen as a principal constituent. To examine this assumption the size of some major nitrogen pools, the SDS-PAGE pattern of soluble and chloroplast membranal proteins, and the activities of nitrate reductase and ribulose bisphosphate carboxylase (RuBPcase) were determined in leaves of rough-lemon (Citrus volkameriana Ten. & Pasq) plants grown hydroponically for 3 to 10 months under K, Mg, and Ca deficiencies. Plants grown under minerally defic

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Pintar, J., B. Homen, K. Gazić, Z. Janječić, M. Sikirić, and T. Černy. "Effects of supplemental phytase on nutrient excretion and retention in broilers fed different cereal based diets." Czech Journal of Animal Science 50, No. 1 (December 5, 2011): 40–46. http://dx.doi.org/10.17221/3993-cjas.

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A 21-day experiment with day-old broilers was conducted in order to assess the effect of phytase supplementation to different cereals-soybean meal based diets on nitrogen, calcium, total and phytate phosphorus excretion and retention. Diets were formulated to contain 4 different cereals (maize, wheat, triticale and barley), 2 levels of dietary calcium (0.6 and 1.0%) and 3 levels of supplemental phytase (0, 500 and 1 000 PU/kg). Nutrient intake, excretion and retention were determined in the first three days of the 2nd and 3rd week of trial. The increasing phytase level resulted in reducing phy

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Ryan, M. H., D. R. Small, and J. E. Ash. "Phosphorus controls the level of colonisation by arbuscular mycorrhizal fungi in conventional and biodynamic irrigated dairy pastures." Australian Journal of Experimental Agriculture 40, no. 5 (2000): 663. http://dx.doi.org/10.1071/ea99005.

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The broad-scale factors determining the level of colonisation by arbuscular mycorrhizal fungi in irrigated permanent pasture were investigated using 10 pairs of dairy farms located in northern Victoria, Australia. Each pair consisted of adjacent farms, one under conventional management and the other under biodynamic management. Significant quantities of fertilisers were applied only to the conventional pastures and this was the major difference in inputs between the 2 management systems. Colonisation by arbuscular mycorrhizal fungi of white clover (Trifolium repens L.), perennial ryegrass (Lol

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Firoz, ZA, KM Nasiruddin, and MF Mondal. "Effect of Different Hedgerow Species and Nitrogen Level on the Soil Properties and Yield of Okra (Abelmoschus esculentus L. Moench)." Bangladesh Journal of Agricultural Research 37, no. 1 (July 11, 2012): 159–69. http://dx.doi.org/10.3329/bjar.v37i1.11190.

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Khagrachari from June 2002 to November 2004 to find out the effect of hedgerow species (Ipil-ipil, Indigofera, Pigeon pea , Pineapple with control) and different nitrogen levels (50, 75, and 100% recommended dose of N) on the soil properties and yield of okra in hill slope condition during the rainy season. Different soil properties were affected by hedgerow species and N level with okra crop. In maximum cases, Indigofera with 100% N showed better performance. The highest pH value 6.0, total nitrogen content 0.84, available phosphorus 4.4, exchangeable calcium 1.27 meq/100g, exchangeable sulph

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Chohura, Piotr, and Eugeniusz Kołota. "Effect of Nitrogen Fertilization on the Yield and Quality of Field-grown Leaf Lettuce for Spring Harvest." Vegetable Crops Research Bulletin 71, no. 1 (January 1, 2009): 41–49. http://dx.doi.org/10.2478/v10032-009-0025-8.

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Effect of Nitrogen Fertilization on the Yield and Quality of Field-grown Leaf Lettuce for Spring HarvestTwo field experiments with leaf lettuce were carried out in 2006-2008. Each of them was set up in a random sub-block design in 3 replications and a two-factorial system. The first factor represented different nitrogen doses that were used to obtain the required N level in the soil prior to planting the seedlings, the levels being: 50, 100 and 150 mg N·dm-3. The second factor incorporated 4 nitrogenous fertilizers which were different in terms of chemical composition, and, more importantly, c

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Neghab, Masoud, Ahmad Mirzaei, Hamed Jalilian, Mehdi Jahangiri, Jafar Zahedi, and Saeed Yousefinejad. "Effects of Low-level Occupational Exposure to Ammonia on Hematological Parameters and Kidney Function." International Journal of Occupational and Environmental Medicine 10, no. 2 (May 1, 2019): 80–88. http://dx.doi.org/10.15171/ijoem.2019.1527.

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Background: Many workers, particularly those working in manufacture of fertilizers, explosives, rubber, pesticides, textiles, and employees of petrochemical industries are exposed to ammonia in their workplaces. Toxic responses of hematopoietic system and kidney following occupational exposure to this chemical have not been thoroughly investigated. Objective: To determine the relationship between long-term occupational exposure to low levels of ammonia and hematological parameters and kidney function. Methods: In this cross-sectional study, 119 randomly selected, male petrochemical workers and

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Varley, Patrick F., Catherine McCarney, James J. Callan, and John V. O'Doherty. "Effect of dietary mineral level and inulin inclusion on phosphorus, calcium and nitrogen utilisation, intestinal microflora and bone development." Journal of the Science of Food and Agriculture 90, no. 14 (July 26, 2010): 2447–54. http://dx.doi.org/10.1002/jsfa.4105.

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Shalyuta, B. V., and E. V. Kostitskaya. "The Yield of Silphium Perfoliatum L. Depending on the Conditions of Cultivation." Agricultural Engineering 22, no. 2 (July 1, 2018): 91–97. http://dx.doi.org/10.1515/agriceng-2018-0019.

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AbstractThe article presents the results of two-year studies on the influence of the method of sowing and the level of nitrogen application on the yield of seeds of Silphium perfoliatum L. − a new fodder crop for the conditions of Belarus. Silphium is precious for the nutritive value of green mass. According to the literature sources, dry matter contains 16-28% of protein, more than 60% of nitrogen-free extractives, 13-23% of sugars, high content of mineral substances, a small amount of fiber, adequate calcium and phosphorus, carotene, vitamin C. Mineral composition of Silphium contains 17.6%

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Urrea-López, Rafael, Rocío I. Díaz de la Garza, and Juan I. Valiente-Banuet. "Effects of Substrate Salinity and Nutrient Levels on Physiological Response, Yield, and Fruit Quality of Habanero Pepper." HortScience 49, no. 6 (June 2014): 812–18. http://dx.doi.org/10.21273/hortsci.49.6.812.

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Although habanero peppers (Capsicum chinense, Jacq.) are highly appreciated as a result of their organoleptic and pungency properties, the crop faces edaphic stresses throughout Mexico. A study was conducted to determine how the photosynthetic parameters, vegetative growth, yield, and fruit quality of the plant change in response to suboptimal conditions in the substrate. Habanero plants were grown in an inert substrate (perlite) and exposed to increased salinity levels (4 and 7 dS·m−1) and reduced nitrogen and phosphorus conditions. Plants grown with a Hoagland-based solution were used as con

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Narueworanon, Patthranit, Lakkana Laopaiboon, Niphaphat Phukoetphim, and Pattana Laopaiboon. "Impacts of Initial Sugar, Nitrogen and Calcium Carbonate on Butanol Fermentation from Sugarcane Molasses by Clostridium beijerinckii." Energies 13, no. 3 (February 5, 2020): 694. http://dx.doi.org/10.3390/en13030694.

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Low-cost nitrogen sources, i.e., dried spent yeast (DSY), rice bran (RB), soybean meal (SM), urea and ammonium sulfate were used for batch butanol fermentation from sugarcane molasses by Clostridium beijerinckii TISTR 1461 under anaerobic conditions. Among these five low-cost nitrogen sources, DSY at 1.53 g/L (nitrogen content equal to that of 1 g/L of yeast extract) was found to be the most suitable. At an initial sugar level of 60 g/L, the maximum butanol concentration (PB), productivity (QB) and yield (YB/S) were 11.19 g/L, 0.23 g/L·h and 0.31 g/g, respectively. To improve the butanol produ

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Cao, Hui, Jianjun Chen, and Dennis B. McConnell. "(130) Dieffenbachia Calcium Oxalate Crystal Formation Affected by Cultivars, Nitrogen Rates, and Light Intensity." HortScience 40, no. 4 (July 2005): 1086C—1086. http://dx.doi.org/10.21273/hortsci.40.4.1086c.

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Tissue-culturedexplantsofDieffenbachiamaculate`Exotic Perfection', D.`Snow Flake', and D. × `Tropic Breeze' were grown on ebb-and-flow trays subirrigated with nitrogen (N) at 50, 200, or 800 mg·L-1 using a water-soluble fertilizer 17N–2.1P–15.7K for 10 weeks in a shaded greenhouse under a maximum photosynthetic photon flux density of 285 μmol·m-2·s-1. Plants were then transferred to interior rooms under a light level of 8 μmol·m-2·s-1. Samples of the midrib were taken from the first mature leaf of plants before being placed indoors and also from the first mature leaf of plants 8 months after g

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32

Grochowska, Jolanta. "Assessment of Water Buffer Capacity of Two Morphometrically Different, Degraded, Urban Lakes." Water 12, no. 5 (May 25, 2020): 1512. http://dx.doi.org/10.3390/w12051512.

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The research was conducted in Karczemne Lake (area, 40.4 ha; maximum (max.) depth, 3.2 m) and Klasztorne Małe Lake (area, 13.7 ha; max. depth, 20.0 m) located in the Kashubian Lake District (Northern Poland). From the beginning of the 1950s, these reservoirs have received municipal and storm wastewater. The long-term process of lake contamination has shaped the specific buffer capacity conditions and influenced the circulation of carbonate and bicarbonate in the water of these ecosystems. Extremely high concentrations of nutrients (Karczemne Lake: max. total phosphorous (TP) level, 7.5 mg P L−

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33

Meraj, MMR, MAS Khan, TA Rakhi, and NR Sarker. "Effect of different levels of saturated solution of calcium chloride in the preparation of calcium salt of fatty acid and its effect on rumen protozoa, pH and ammonia nitrogen." Bangladesh Journal of Animal Science 42, no. 2 (December 31, 2013): 109–13. http://dx.doi.org/10.3329/bjas.v42i2.18489.

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Abstract (sommario):

Calcium salt of fatty acid was prepared by adding 3 different levels of saturated solution of calcium chloride (CaCl2) to soybean oil. It was found that fat content was not significantly affected by calcium chloride. However, calcium chloride had significant effect on other parameters like dry matter, fat, ash and sodium. The highest calcium and fat was obtained when 3.5 parts CaCl2 were added (p<0.01). It was also observed that sun drying and drying at room temperature had no significant effect on any parameter except dry matter content. Calcium salt of fatty acid had significant anti-

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34

Spiers, James M., and John H. Braswell. "793 PB 039 CALCIUM, MAGNESIUM, AND NITROGEN FERTILIZTION AFFECTS LEAF NUTRIENT CONTENT AND GROWTH OF `STERLING' MUSCADINE GRAPE." HortScience 29, no. 5 (May 1994): 546f—546. http://dx.doi.org/10.21273/hortsci.29.5.546f.

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Abstract (sommario):

The effects of varying N, Ca, and Mg fertilization levels on plant growth and leaf elemental content of `Sterling' muscadine grapes (Vitis rotundifolia Michaux) were studied in a 2 year sand culture experiment. Increased N levels reduced leaf K, Ca, and Mn and increased leaf N and P concentrations plus plant growth. Calcium fertilization increased leaf Ca, decreased leaf Mg, but did not affect plant growth. Mg fertilization reduced leaf K and Ca and increased leaf Mg plus plant growth. Visual symptoms, assumed to be Mg deficiencies, were decreased by Mg fertilization and highly correlated to l

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35

Cavali, Jucilene, Odilon Gomes Pereira, Sebastião de Campos Valadares Filho, Edson Mauro Santos, Gleidson Giordano Pinto de Carvalho, Márcia Vitória Santos, Marlos Oliveira Porto, and Juliana Ferraz Huback Rodrigues. "Bromatological and microbiological characteristics of sugarcane silages treated with calcium oxide." Revista Brasileira de Zootecnia 39, no. 7 (July 2010): 1398–408. http://dx.doi.org/10.1590/s1516-35982010000700002.

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Abstract (sommario):

It was evaluated the addition of calcium oxide (0; 0.5; 1.0; 1.5; and 2.0% of dry matter) effect on the chemical composition and ruminal degradability of the dry matter and neutral detergent fiber, on the losses of dry matter, and on the microbial population in sugar cane silages. A design with five levels of calcium oxide and three replications was used. All the variables were influenced by the addition of calcium oxide in the silages, except the composition in acid detergent insoluble protein, water soluble carbohydrates and lignin. The dry matter content and pH linearly increased while the

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36

Ahmed, A. K., and K. A. Johnson. "The effect of the ammonium: nitrate nitrogen ratio, total nitrogen, salinity (NaCl) and calcium on the oxalate levels ofTetragonia tetragonioidesPallas. Kunz." Journal of Horticultural Science and Biotechnology 75, no. 5 (January 2000): 533–38. http://dx.doi.org/10.1080/14620316.2000.11511280.

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37

Larsen, Torben, and Hanne Damgaard Poulsen. "The relationship between mineral and nitrogen balances in growing pigs fed diets supplemented with zinc oxide." Canadian Journal of Animal Science 76, no. 3 (September 1, 1996): 409–15. http://dx.doi.org/10.4141/cjas96-059.

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Abstract (sommario):

The present study was conducted to determine if there were effects of increasing levels of dietary zinc supplementation on the turnover of zinc and other minerals and trace elements in growing pigs. Thirty crossbred female pigs, with an initial body weight of approximately 25 kg, were randomly assigned to five diets with increasing levels of supplemented zinc (as zinc oxide); i.e. from the intrinsic level of 42 mg kg−1 diet to 72, 105, 170, and 255 mg kg−1, respectively. The animals were subjected to two 7-d balances in metabolic cages, separated by 15 d in pens. Balances consisted of controll

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38

Wilman, D., and Nthoana Mzamane. "The effect of field drying on the concentrations of some major elements in herbage." Journal of Agricultural Science 107, no. 1 (August 1986): 9–13. http://dx.doi.org/10.1017/s0021859600066739.

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Abstract (sommario):

SUMMARYHerbage from a grass-white clover sward was dried in the field to the hay stage (≤ 0·33 g moisture/g dry matter) at three times of year in 2 years comparing, in each case, all combinations of two stages of maturity, two levels of applied nitrogen and two thicknesses of swath. Samples taken at intervals during drying were analysed for nitrogen, phosphorus, potassium, calcium, magnesium and sodium.When there was little or no rain during drying, there was no change in the concentration of any of the six elements in the herbage dry matter between cutting and the hay stage, whatever the stag

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39

Bavec, F., B. Čeh Brežnik, and M. Brežnik. "Hop yield evaluation depending on experimental plot area under different nitrogen management." Plant, Soil and Environment 49, No. 4 (December 10, 2011): 163–67. http://dx.doi.org/10.17221/4108-pse.

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Abstract (sommario):

Numerous agricultural and associated ecological effects such as mineral nitrogen fertilising influence the yield of hop (Humulus lupulus L.) cones and its quality. Using a&nbsp;wide spacing of plants (in our case 2.6 &times; 0.8 m) we want to answer a&nbsp;hypothetical question about an appropriate number of test plants per plot vs. experimental plot area. The aim of this study was to compare the effect of different rates of mineral nitrogen, fertiliser combinations and their nitrogen split application on hop yield evaluated from different plot areas (micro trial: 30 plants per plo

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40

Hatamian, Mansoure, and Mohammad Kazem Souri. "Postharvest Quality of Roses under Different Levels of Nitrogenous Compounds in Holding Solution." Open Agriculture 4, no. 1 (March 8, 2019): 79–85. http://dx.doi.org/10.1515/opag-2019-0007.

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Abstract (sommario):

Abstract Nitrogen (N) forms and N levels can have a great impact on growth and quality of agricultural crops. Postharvest N treatments may also affect the quality of products. This study was conducted under laboratory conditions to evaluate the changes in postharvest quality characteristics of cut roses (Rosa hybrid cv ‘Utopia’) under different nitrogen concentrations of holding solution. Three nitrogen sources including ammonium sulfate, calcium nitrate and potassium nitrate at five concentrations (0, 5, 10, 15 and 20 mgL-1 N) were applied into vases with holding solution. The results showed

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41

Salles, Márcia Saladini Vieira, Marcus Antonio Zanetti, Fernando André Salles, Evaldo Antonio Lencioni Titto, and Renata Maria Consentino Conti. "Changes in ruminal fermentation and mineral serum level in animals kept in high temperature environments." Revista Brasileira de Zootecnia 39, no. 4 (April 2010): 883–90. http://dx.doi.org/10.1590/s1516-35982010000400025.

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Abstract (sommario):

In order to evaluate the effect of environmental temperature on ruminal fermentation and on mineral levels of growing ruminants, it was used 12 male calves (initial average weight 82.9 ± 7.7 kg, 100 days of age), were employed in a randomized block design (by weight) experiment, with repeated weight measurement and two environmental temperatures: thermoneutral (24ºC) and heat-stressed (33ºC), during 38 days. The animals exposed to 33ºC presented lower dry matter ingestion, lower T3 (triiodothyronine) serum level, higher ammoniacal nitrogen (NH3-N) level in the rumen liquid, and higher rectal a

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42

Muscher, Alexandra, and Korinna Huber. "Effects of a reduced nitrogen diet on calcitriol levels and calcium metabolism in growing goats." Journal of Steroid Biochemistry and Molecular Biology 121, no. 1-2 (July 2010): 304–7. http://dx.doi.org/10.1016/j.jsbmb.2010.03.084.

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43

Ndidi, Uche Samuel, Charity Unekwuojo Ndidi, Abbas Olagunju, Aliyu Muhammad, Francis Graham Billy, and Oche Okpe. "Proximate, Antinutrients and Mineral Composition of Raw and Processed (Boiled and Roasted) Sphenostylis stenocarpa Seeds from Southern Kaduna, Northwest Nigeria." ISRN Nutrition 2014 (March 16, 2014): 1–9. http://dx.doi.org/10.1155/2014/280837.

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Abstract (sommario):

This research was aimed at evaluating the proximate composition, level of anti-nutrients, and the mineral composition of raw and processed Sphenostylis stenocarpa seeds and at examining the effect of processing on the parameters. From the proximate composition analysis, the ash content showed no significant difference (P>0.05) between the processed and unprocessed (raw) samples. However, there was significant difference (P<0.05) in the levels of moisture, crude lipid, nitrogen-free extract, gross energy, true protein, and crude fiber between the processed and unprocessed S. stenocarpa. A

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44

Tawfik, Ahmed A., and Jiwan P. Palta. "MITIGATION OF HEAT STRESS EFFECTS ON POTATO GROWTH BY CALCIUM AND NITROGEN APPLICATION DURING STRESS." HortScience 27, no. 6 (June 1992): 596f—596. http://dx.doi.org/10.21273/hortsci.27.6.596f.

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Abstract (sommario):

The optimum temperature regime for Solanum tuberosum cv. Russet Burbank is usually 20/15°C day/night. We studied the impact of heat stress (30/25°C, day/night) on the growth of this heat sensitive cultivar under controlled conditions (UW-Biotron). Plants were grown in sandy-loam soil which tested at 1500 Kg/ha Ca. Plants were at the maximum temperature for 6h during the middle of the day with a photoperiod of 14 hrs. All pots received identical amounts of total N (rate: 225 Kg N ha1.). The treatments were: (1) NSN: non-split N (N application 1/2 emergence, 1/2 two wks later): (2) SPN: split-N

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45

Hedman, Craig Wallace, and Dan Binkley. "Canopy profiles of some Piedmont hardwood forests." Canadian Journal of Forest Research 18, no. 8 (August 1, 1988): 1090–93. http://dx.doi.org/10.1139/x88-166.

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Abstract (sommario):

Relationships between canopy profiles and site quality were examined in 11 old, uneven-aged (>180 years) hardwood forests in the Piedmont of eastern North Carolina. Site fertility was indexed by extractable soil calcium and phosphorus, by the content of calcium, phosphorus and nitrogen in litter fall, and by the aboveground net primary productivity of each stand. Canopy profiles were indexed by the leaf area index for each 3.3-m height interval. Total leaf area index correlated highly with most measures of site fertility, but we found no clear patterns between canopy profiles and any measur

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46

Marler, Thomas E., and Murukesan V. Krishnapillai. "Incident Light and Leaf Age Influence Leaflet Element Concentrations of Cycas micronesica Trees." Horticulturae 5, no. 3 (August 7, 2019): 58. http://dx.doi.org/10.3390/horticulturae5030058.

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Abstract (sommario):

The need for improved knowledge on conservation and management of cycad species has generated recent interest in compiling a database on leaf nutrient concentrations. However, the sampling protocols have not been consistent among reports and the influences of some plant and habitat traits on the plasticity of cycad leaf nutrient concentrations has not been adequately determined. We used Cycas micronesica K.D. Hill trees to determine the role of incident light level and leaf age on leaflet content of 11 essential elements. Shade leaves exhibited increased mass-based concentration for nitrogen,

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47

Brown, C. J., and P. J. Scott. "Environmental parameters influencing the distribution of Platanthera blephariglottis and Platanthera clavellata (Orchidaceae) in peatlands on the Avalon Peninsula, Newfoundland." Canadian Journal of Botany 75, no. 6 (June 1, 1997): 974–80. http://dx.doi.org/10.1139/b97-108.

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Abstract (sommario):

Populations of two terrestrial species of orchids, Platanthera blephariglottis (Willd.) Lindl. and Platanthera clavellata (Michx.) Luer, were investigated for two field seasons (1991-1992) to determine what environmental factors (substrate constituents, water pH, water level) may influence their distributions within a peatland. Peat constituent values (magnesium, phosphorus, nitrogen, potassium, iron, calcium, pH, moisture, organic matter, ash) associated with individual species were, for the most part, not significantly different among sites or between species, although the values associated

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48

Węgiel, Andrzej, Ernest Bielinis, and Krzysztof Polowy. "Macronutrient Stocks in Scots Pine Stands of Different Densities." Forests 9, no. 10 (September 22, 2018): 593. http://dx.doi.org/10.3390/f9100593.

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Abstract (sommario):

A positive nutrient balance is crucial to sustaining forest productivity. Differences in stand densities usually mean different aboveground biomass stocks and different proportions of tree compartments. These differences can be reflected in the different macronutrient stocks between stands of different densities, because various tree compartments have different element concentrations. In this study, 82-year-old stands of Scots pine were compared, and specifically, the concentrations of the elements in tree compartments and the amounts of macronutrients in aboveground biomass were compared. The

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49

Mahalinganathan, K., and M. Thamban. "Potential genesis and implications of calcium nitrate in Antarctic snow." Cryosphere Discussions 9, no. 6 (November 6, 2015): 6125–51. http://dx.doi.org/10.5194/tcd-9-6125-2015.

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Abstract (sommario):

Abstract. Among the large variety of particulates in the atmosphere, calcic mineral dust particles have highly reactive surfaces that undergo heterogeneous reactions with nitrogen oxides contiguously. The association between Ca2+, an important proxy indicator of mineral dust and NO3–, a dominant anion in the Antarctic snow pack was analysed. A total of 41 snow cores (~ 1 m each) that represent snow deposited during 2008–2009 were studied along coastal–inland transects from two different regions – the Princess Elizabeth Land (PEL) and central Dronning Maud Land (cDML) in East Antarctica. Correl

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50

Campos, Ricardo, and David Wm Reed. "Influence of Irrigation Water Salinity on Optimal Nitrogen, Phosphorus, and Potassium Liquid Fertilizer Rates for Spathiphyllum ‘Petite’." Journal of Environmental Horticulture 12, no. 2 (June 1, 1994): 104–7. http://dx.doi.org/10.24266/0738-2898-12.2.104.

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Abstract (sommario):

Abstract The experiment was a 5 × 5 factorial composed of 5 fertilizer levels and 5 salinity levels applied to Spathiphyllum ‘Petite’. Fertilizer levels were 0, 125, 250, 375 and 500 mg/l (ppm) N from a 24N-3.4P-13.3K (24-8-16) soluble fertilizer. Salinity levels were 0, 500, 1000, 1500 and 2000 mg/l (ppm) from NaCl:CaCl2 in a 1:1 equivalent ratio. Maximum growth was observed at 250 mg/l N and no salts. At the highest salinity level tested (2000 mg/l), maximum growth was observed at 125 mg/l N. Generally, as salinity level increased the measured growth parameters decreased. Leaf calcium, sodiu

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