Consulta: subjectFacets:"Nitrogen concentration"
Registros recuperados: 6
Data/hora: 06/06/2024 02:48:29

Cultivation of Pleurotus sajor-caju on banana stalk and Bahia grass based substrates
Provedor de dados: 75
Autores: Siqueira,Félix G de; Martos,Emerson T; Silva,Romildo da; Dias,Eustáquio S.
Banana stalks and Bahia grass were utilized as basic starting materials for the production of the mushroom Pleurotus sajor-caju. Banana stalks were combined with other waste or supplement products (wheat bran, coast-cross hay, bean straw and cotton textile mill) to obtain different nitrogen concentrations. Since Bahia grass is relatively rich in protein, it was combined with other substrates (banana stalk, coast-cross hay and bean straw) to maintain a substrate nitrogen concentration of about 1.5%. Banana stalks and Bahia grass were both more efficient in the production of the mushroom P. sajor-caju when utilized without the addition of other substrates, with biological efficiencies of 74.4% and 74.12%, respectively. When combined with other substrates or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mushroom cultivation; Agro-industrial waste; Axenic cultivation; Nitrogen concentration.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362011000200011

Biological efficiency of Agaricus brasiliensis cultivated in compost with nitrogen concentrations
Provedor de dados: 75
Autores: Siqueira,Félix G de; Martos,Emerson T; Silva,Evânia Geralda da; Silva,Romildo da; Dias,Eustáquio S.
The production of compost is one of the most important steps for the cultivation of any species of mushroom. For the Agaricus species, this step is even more complex because it depends on the performance of different microorganisms that act on the substrate, turning it into selective compost that promotes the growth of the fungus to be cultivated. Among the various factors that affect the microbial activity, the initial concentration of nitrogen is considered one of the most important. Due to the lack of conclusive studies about that, the aim of this study was to evaluate the productivity and biological efficiency of Agaricus brasiliensis in compost prepared with different initial concentrations of nitrogen, according to the composting methodology and to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Composting; Mushroom cultivation; Ammonia; Nitrogen concentration.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362011000200004

Relations entre les eaux interstitielles des fonds sedimentaires ostreicoles et le milieu hydrobiologique. Le Bassin des Chasses des Sables d'Olonne
Provedor de dados: 5
Autores: Feuillet, Michèle.
Extensive data have been obtained on oyster-bearing sediments and interstitial and overlying waters in the Bassin des Chasses, les Sables d'Olonne, which will enable a scale of suitability of waters for oyster-culture to be compiled. The studies concerned: I. Hydrology, including fresh water inflow: II. Salinity; alkaline reserve; Na, K, Ca and Mg levels: III. Circulation and distribution of nitrogenous substances: IV. The N sub(2) cycle: V.P. Nitrogenous and phosphorus nutrients are regenerated continuously in the sediments and replenish the free water.
Tipo: Text
Palavras-chave: Bisacy bay; Organic matter; Nitrogen concentration; Phosphorus; Marine sediment; Hydrobiology; Oyster culture zone.
Ano: 1971
URL: http://archimer.ifremer.fr/doc/1971/publication-2239.pdf

Application methods of Azospirillum brasilense in first- and second-crop corn
Provedor de dados: 91
Autores: Alvarez,Rita de C. F.; Benetão,Jamile; Barzotto,Gustavo R.; Andrade,Maria G. de O.; Lima,Sebastião F. de.
ABSTRACT This study investigated whether inoculation of Azospirillum brasilense in the seeds or sowing furrow could reduce the need for nitrogen fertilizer application in the corn grown in the first and second crop harvest. The experiments were conducted, in the municipality of Chapadão do Sul, MS, Brazil, in the first crop harvest (2014/2015) and in the second crop harvest (2016). The early maturity hybrids CD 384 HX and P3132H were used in the first and in the second harvest corn, respectively. In both experiments, the experimental design was the randomized blocks with eight treatments and three repetitions. At the silking (R1 stage), the leaf N concentration, relative chlorophyll index and nitrate reductase activity were measured, at the physiological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Diazotrophic bacteria; Nitrogen concentration; Nitrate reductase activity.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019001100840

Two years of nitrogen and sulfur fertilizations in a signal grass pasture under degradation: changes in the root system
Provedor de dados: 96
Autores: Silveira,Cristiane Prezotto; Oliveira,Daniela Alves de; Bonfim-Silva,Edna Maria; Monteiro,Francisco Antonio.
The objective of this research was to evaluate the effect of combinations of nitrogen and sulfur rates in degraded signal grass (Brachiaria decumbens) pasture on their productive, morphological and nutritional attributes in the root system at four soil depths. The pasture used in the experiment was established over eight years ago in Entisol. Five nitrogen rates (0; 150; 300; 450 and 600 kg/ha/year) and five sulfur rates (0; 15; 30; 45 and 60 kg/ha/year) were combined in a fractionated factorial in a randomized block design, with three replications. Nitrogen was supplied as ammonium nitrate and sulfur as gypsum, and the rates were split into three times in the rainy season. The evaluations occurred at intervals of 35 days during the rainy season and 56...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachiaria decumbens; Dry mass; Length; Nitrogen concentration; Surface.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000600006

Nitrogen and sulphur in Marandu grass: relationship between supply and concentration in leaf tissues
Provedor de dados: 63
Autores: Batista,Karina; Monteiro,Francisco Antonio.
In order to better assess the nutritional status of forage grasses there has been an increasing interest in studying the nutrient concentrations present in different parts of plant shoot. The aim of this work was to evaluate the nitrogen and sulphur concentrations in leaf tissues of Brachiaria brizantha cv. Marandu grown in nutrient solutions with combined rates of both nitrogen and sulphur. An experiment was conducted in a greenhouse during the Spring season in Piracicaba-SP, Brazil, using ground quartz as substrate. A fractionated 5² factorial design was used, with 13 combinations of nitrogen and sulphur rates in the solutions, in mg L-1, as follows: 14 and 3.2; 14 and 32; 14 and 80; 126 and 12.8; 126 and 64; 210 and 3.2; 210 and 32; 210 and 80; 336 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachiaria brizantha; Nitrogen concentration; Sulphur concentration; N:S ratio; Leaf diagnosis.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000100007