Non-additive effects of nitrogen and phosphorus fertilization on microbial biomass and residue distribution in a subtropical plantation

2022 ◽  
Vol 108 ◽  
pp. 103376
Author(s):  
Yanli Jing ◽  
Xueli Ding ◽  
Xuechao Zhao ◽  
Peng Tian ◽  
Fuming Xiao ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Phosphorus Fertilization ◽  
Additive Effects ◽  
Nitrogen And Phosphorus

scholarly journals Rock phosphate fertilization harms Azospirillum brasilense selection by maize

2019 ◽  
pp. 1967-1974
Author(s):  
Carime Moraes ◽  
Roberta Mendes dos Santos ◽  
Everlon Cid Rigobelo
Keyword(s):  
Microbial Biomass ◽  
Azospirillum Brasilense ◽  
Dry Matter ◽  
Rock Phosphate ◽  
Microbial Biomass Carbon ◽  
Phosphorus Fertilization ◽  
Biomass Carbon ◽  
Nitrogen And Phosphorus ◽  
Maize Crop ◽  
Phosphate Fertilization

Maize is the most important crop cultivated worldwide. It needs a significant amount of nitrogen and phosphorus fertilization to maintain high yields. However, the high cost of fertilization makes production more expensive and damages the environment. The present study used Azospirillum brasilense and Bacillus subtilis bacteria in an attempt to supply nitrogen and phosphorus fertilization to a maize crop. The experiment was carried out with maize plants under greenhouse conditions with a factorial scheme (4 x 2 x 2), where the first factor corresponded to bacterial inoculation: (a) control (no inoculation); (b) A. brasilense inoculation (AZ); (c) B. subtilis inoculation (BS) and (d) inoculation with a mixture of (AZ+BS), the second factor corresponded to the presence or absence of rock phosphate fertilization and the third factor corresponded to the presence or absence of top-dressed nitrogen fertilizer. Evaluated plant parameters were height, shoot dry matter (SDM), root dry matter (RDM), and soil parameters were total colony forming units of bacteria (CFU), nitrogen, soluble phosphorus and microbial biomass carbon (MBC). Although some parameters were improved with mineral fertilization in general, the findings showed that there were many adverse effects with the use of rock phosphate fertilization and A. brasilense inoculation. When both were applied together in treatments, there was reduction in plant height, microbial biomass carbon and total number of bacteria compared to treatments without rock phosphate fertilization. These results strongly suggest that rock phosphate harms the ability of A. brasilense to promote plant growth and demonstrate the necessity of new studies to verify whether this negative effect occurs under field conditions and could reduce yields in maize crop production.

scholarly journals Crescimento inicial da berinjeleira sob adubação nitrogenada e fosfatada e irrigada com água de reúso

2015 ◽  
Vol 10 (3) ◽  
pp. 34 ◽  
Author(s):  
Aldair de Souza Medeiros ◽  
Reginaldo Gomes Nobre ◽  
Eliane da Silva Ferreira ◽  
Whalamys Lourenço de Araújo ◽  
Manoel Moises Ferreira de Queiroz
Keyword(s):  
Reclaimed Water ◽  
Weather Conditions ◽  
Dry Mass ◽  
Industrial Sector ◽  
Treated Wastewater ◽  
Intermittent Flow ◽  
Phosphorus Fertilization ◽  
Initial Growth ◽  
Nitrogen And Phosphorus ◽  
Sand Filter

<p><span>A utilização da água vem gerando alguns conflitos devido o aumento da escassez hídrica em todo o mundo, os setores de maior consumo são a agricultura responde por 70%, o setor industrial 22% e 8% corresponde ao uso doméstico. Objetivou-se com este trabalho avaliar os efeitos causados pelas doses de nitrogênio e fósforo e a irrigação com água de reúso doméstica pós-tratada em filtro de areia com fluxo intermitente durante o crescimento inicial da berinjeleira na região semiárida paraibana. O experimento foi realizado em ambiente protegido, no Centro de Ciências e Tecnologia Agroalimentar (CCTA/UFCG), Campus de Pombal – PB, e cujos tratamentos resultaram na combinação de dois fatores: quatro doses de adubação nitrogenada (N<sub>1 </sub>- 3,55; N<sub>2</sub> - 6,2; N<sub>3</sub> - 8,9; N<sub>4</sub> - 11,55 g de N/vaso) e quatro doses de adubação fosfatada (P<sub>1</sub> - 15,28; P<sub>2</sub> - 26,74; P<sub>3</sub> - 38,2; P<sub>4</sub> - 49,66 g de P/vaso) correspondendo respectivamente a 40; 70; 100; 130% conforme indicação de adubação para a cultura da berinjela quando cultivada em vasos, irrigada com água de reúso pós-tratada em filtro de areia intermitente (AR). O delineamento experimental adotado foi o de blocos inteiramente casualizados, com os tratamentos arranjados em esquema fatorial 4 x 4, com quatro repetições. Conclui-se que a prática da irrigação com água de reúso surge como uma fonte hídrica e nutricional para a cultura da berinjela, nas condições edafoclimáticas do semiárido; Doses de 3,55 g de N e 15,28 g de P por planta quando se utiliza água de reúso na irrigação de plantas de berinjela são suficientes para suprir as necessidades nutricionais da cultura. A massa fresca da folha de plantas de berinjela decresceu linearmente com o incremento das doses de N aplicadas. A produção de massa fresca e seca da parte aérea de plantas de berinjela irrigadas com água de reúso com 40% da adubação com N e P não diferiu das plantas que receberam 100% indicação de N e P.</span></p><p align="center"><strong><em>Eggplant early growth under nitrogen and phosphate and irrigated with reuse water</em></strong></p><p><strong>ABSTRACT - </strong>The use of water has generated some conflicts due to increasing water scarcity around the world, the largest consumer sectors are agriculture accounts for 70 %, the industrial sector 22% and 8% corresponds to the household. The objective of this study was to evaluate the effects caused by nitrogen and phosphorus and irrigation with reclaimed water post- treated domestic sand filter with intermittent flow during the initial growth of eggplant in Paraíba semi-arid region.The experiment was conducted in a greenhouse, in the Science and Technology Center Agrifood (CCTA / UFCG), Campus de Pombal - PB, and the treatments resulted in the combination of two factors: four doses of nitrogen (N1 - 3.55; N2 - 6.2; N3 - 8.9; N4 - 11.55 g N / pot) and four doses of phosphorus fertilization (P1 - 15.28; P2 - 26.74; P3 - 38.2; P4 - 49 66 g P / pot) corresponding respectively to 40; 70; 100; 130% as fertilizer indication for eggplants when grown in pots irrigated with treated wastewater post-intermittent sand filter (AR). The experimental design was a completely randomized design, with treatments arranged in a factorial 4 x 4, with four replications. We conclude it the practice of irrigation with reclaimed water emerges as a water and nutrient source for the eggplant crop, soil and weather conditions in the semiarid; Doses of 3,55 g of N and 15,28 g P per plant when using reclaimed water in irrigation eggplants are sufficient to meet the nutritional needs of the crop. The fresh weight of eggplants sheet decreased linearly with increasing N rates. The production shoot fresh and dry mass of eggplant plants irrigated with reclaimed water to 40% of fertilization with N and P did not differ from plants that received 100 % of N and P indication.</p><p><span><br /></span></p>

Combined Nitrogen and Phosphorus Fertilization for Controlling the Toxigenic AlgaPrymnesium parvum

2007 ◽  
Vol 69 (3) ◽  
pp. 214-222 ◽  
Author(s):  
Gerald L. Kurten ◽  
Aaron Barkoh ◽  
Loraine T. Fries ◽  
Drew C. Begley
Keyword(s):  
Phosphorus Fertilization ◽  
Nitrogen And Phosphorus ◽  
Combined Nitrogen

Microbial Biomass and Enzyme Activities in Chromium and Lead-Contaminated Sediments

2013 ◽  
Vol 798-799 ◽  
pp. 1139-1143
Author(s):  
Chao Wang ◽  
Shuai Cheng ◽  
Pei Fang Wang ◽  
Yan Yan Ma
Keyword(s):  
Heavy Metals ◽  
Microbial Biomass ◽  
Enzyme Activities ◽  
Chemical Properties ◽  
Nitrogen And Phosphorus ◽  
Oxidation Reduction ◽  
Oxidation Reduction Potential ◽  
Organic Carbon Oxidation ◽  
The Relationship ◽  
Cr Contamination

The relationship between microbial biomass and enzyme activities under heavy metal pollution had attracted much attention in ecology. The experimental sediment samples were supplemented with Pb and Cr and incubated at room temperature for a month. Microbial properties such as microbial biomass, urease, catalase and cellulase activities, together with several chemical properties such as pH, total organic carbon , oxidation-reduction potential, total nitrogen and phosphorus were measured to evaluate changes in sediment qualities. Our results demonstrate that heavy metals would inhibit sediment microbe biomass and enzyme activities. Such decreases in sediments microbial biomass and enzyme activities by Pb and Cr contamination may help to evaluate heavy metals contaminated soil ecologies.

EFFECT OF NITROGEN AND PHOSPHORUS FERTILIZATION ON WILD OATS AND SPRING WHEAT

1963 ◽  
Vol 43 (1) ◽  
pp. 64-69 ◽  
Author(s):  
J. J. Sexsmith ◽  
G. C. Russell
Keyword(s):  
Seed Yield ◽  
Spring Wheat ◽  
Nitrogen Fertilizer ◽  
High Rate ◽  
Phosphorus Fertilization ◽  
Wild Oat ◽  
Measurable Effect ◽  
Nitrogen And Phosphorus ◽  
Wild Oats ◽  
Loam Soil

Spring wheat, with fertilizer applied in the drill rows, was grown in wild-oat-infested stubble on a Shallow Lethbride loam soil for 4 years, Phosphorus had no measurable effect on the height, straw weight, seed yield, or number of wild-oat plants. In contrast, nitrogen increased the number of seed-bearing stems, plant height, straw weight, and seed yield, but did not change the wild-oat stand. Wheat yields were increased by nitrogen and further increased by the addition of phosphorus at the rate of 20 pounds of P2O5 per acre in 3 of the 4 years. Measured bushel weight of the wheat increased with nitrogen fertilizer additions and was further increased by phosphorus except at the high rate of both materials. Fertilizer applications, under conditions similar to those encountered in this test, may be useful for increasing wheat production, but only at the expense of producing increased quantities of wild-oat seed.

scholarly journals Yield and Nutritional Quality of Cabbage as Affected by Nitrogen and Phosphorus Fertilization

1970 ◽  
Vol 41 (1) ◽  
pp. 41-46
Author(s):  
KMF Haque ◽  
AA Jahangir ◽  
ME Haque ◽  
RK Mondal ◽  
MAA Jahan ◽  
...  
Keyword(s):  
Block Design ◽  
Growth Yield ◽  
Nutrient Content ◽  
Phosphorus Fertilization ◽  
Fertilizer Treatment ◽  
P Fertilization ◽  
Nitrogen And Phosphorus ◽  
Titrable Acidity ◽  
Nitrogen Phosphorus

An experiment was conducted in field condition to study the effect of nitrogen-phosphorus fertilization on growth, yield and nutrient content of cabbage. The experiment was laid out in randomize block design with three replications. The yield and yield components were maximized by N3P2 fertilizer treatment. Nutrient content of cabbage varied with fertilizer treatment. The maximum amount of reducing sugar, ascorbic acid, phosphorus were found at the highest rate of N - P fertilization whereas accumulation of titrable acidity, iron, calcium were maximum at the rate of N2P2 treatment. However pH, ash content were more or less same throughout the experiment. Bangladesh J. Sci. Ind. Res. 41(1-2), 41-46, 2006

Frequency of defoliation and nitrogen and phosphorus fertilization onAndropogon gayanusKunth. II. Macroelement concentrations

1997 ◽  
Vol 28 (9-10) ◽  
pp. 833-840 ◽  
Author(s):  
David E. Morillo ◽  
Jesús Faría‐Mármol ◽  
Alfredo Caraballo ◽  
Lee R. McDowell
Keyword(s):  
Phosphorus Fertilization ◽  
Nitrogen And Phosphorus
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