Results 81 to 90 of about 641,085 (189)

Effects of long-term irrigation on soil phosphorus fractions and microbial communities in Populus euphratica plantations. [PDF]

For Res (Fayettev), 2023
He Y, Lin X, Wang L, Ma X, Fang L, Xia Z.   +5 more
europepmc   +1 more source

Internal Phosphorus Loading in Spring Lake: Year 2 [PDF]

, 2004
Experimental and desktop studies were conducted during 2004 to better understand the factors affecting internal phosphorus (P) loading in Spring Lake, Michigan.
Steinman, Dr. Alan, Nemeth, Mrs. Lori, Rediske, Dr. Rick   +2 more
core  

Influence of soil fertility management technologies on phosphorus fractions, sorption characteristics, and use efficiency in humic Nitisols of Upper Eastern Kenya. [PDF]

Heliyon, 2023
Otieno EO, Lenga FK, Mburu DM, Kiboi MN, Fliessbach A, Ngetich FK.   +5 more
europepmc   +1 more source

Release of phosphorus, aluminium and iron in fractionation of inorganic soil phosphorus

Agricultural and Food Science, 1987
Release of phosphorus, aluminium and iron by a modified Chang and Jackson procedure was studied in five mineral soils. Quantities of aluminium and iron released during the procedure and extracted by acid ammonium oxalate were compared. The extractability of P, Al and Fe by 1 M NH4CI and that of Al and Fe by alkaline 0.5 M NH4F was poor.
openaire   +4 more sources

Maize-soybean intercropping facilitates chemical and microbial transformations of phosphorus fractions in a calcareous soil. [PDF]

Front Microbiol, 2022
Liu J, Li Y, Han C, Yang D, Yang J, Cade-Menun BJ, Chen Y, Sui P.   +7 more
europepmc   +1 more source

Phosphorus uptake by spring barley in dependence on the content of this element in soil

Agronomy Science, 2008
The purpose of our studies was to assess the dependence of yield, content and uptake of phosphorus by spring barley and the content of available forms as well as mineral fractions of this element in soil.
Wiesław Bednarek, Renata Reszka
doaj  

Long-term cattle manure addition enhances soil-available phosphorus fractions in subtropical open-field rotated vegetable systems. [PDF]

Front Plant Sci, 2023
Mao Y, Hu W, Li Y, Li Y, Lei B, Zheng Y.
europepmc   +1 more source

Fractions

, 2010
This leaflet reminds students how to express a fraction in its simplest form, and how to add, subtract, multiply and divide fractions.
mathcentre, Loughborough University
core  

Changes in soil labile inorganic phosphorus and fertility over time after agricultural land-use in the Cerrado of Northeastern Brazil

Soil Security
Land-use change in tropical environments significantly affects soil nutrient dynamics, particularly phosphorus (P). This study aimed to evaluate the effects of agricultural conversion and different years of land-use on soil chemical attributes and ...
Gabriel dos Santos da Cruz, Henrique Antunes de Souza, Ruthanna Isabelle de Oliveira, Zigomar Menezes de Souza, Marcus Vinicius Beserra dos Santos, Ronny Sobreira Barbosa, Pâmalla Graziely Carvalho Morais, Paloma Cunha Saraiva, José Ferreira Lustosa Filho, Hosana Aguiar Freitas de Andrade, Cácio Luiz Boechat   +10 more
doaj   +1 more source

Tillage, green manure and residue retention improves aggregate-associated phosphorus fractions under rice-wheat cropping. [PDF]

Sci Rep, 2022
Sharma S, Kaur S, Parkash Choudhary O, Singh M, Al-Huqail AA, Ali HM, Kumar R, Siddiqui MH.   +7 more
europepmc   +1 more source