Zobrazeno 1 - 10 of 10 pro vyhledávání: '"Johnny Johnston"'
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Outputs: Potassium Losses from Agricultural Systems
Autor: T. Scott Murrell, Marta A. Alfaro, Keith Goulding, Huoyan Wang, Johnny Johnston, Robert L. Mikkelsen, Ciro Antonio Rosolem
Publikováno v: Improving Potassium Recommendations for Agricultural Crops ISBN: 9783030591960
Potassium (K) outputs comprise removals in harvested crops and losses via a number of pathways. No specific environmental issues arise from K losses to the wider environment, and so they have received little attention. Nevertheless, K is very soluble
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::358b814997c5fe1ccff245203aeaade6
https://doi.org/10.1007/978-3-030-59197-7_3
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2
Major limitations to achieving '4 per 1000' increases in soil organic carbon stock in temperate regions: Evidence from long-term experiments at Rothamsted Research, United Kingdom
Autor: David S. Powlson, Johnny Johnston, Andy Macdonald, R. P. White, Paul R. Poulton
Publikováno v: Global change biology. 24(6)
We evaluated the “4 per 1000” initiative for increasing soil organic carbon (SOC) by analysing rates of SOC increase in treatments in 16 long‐term experiments in southeast United Kingdom. The initiative sets a goal for SOC stock to increase by
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4466d8f585702ffc3ac11c560789fc4f
https://pubmed.ncbi.nlm.nih.gov/29356243
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3
Movement of water and the herbicides atrazine and isoproturon through a large structured clay soil core
Autor: A.E. 'Johnny' Johnston, G. L. Harris, K. Roger Howse, Kevin C. Jones, Angus J. Beck, Venessa Lam, D. Edward Henderson, Keith Beven
Publikováno v: Journal of Contaminant Hydrology. 19:237-260
A large (1.1 m × 0.8 m in diameter) core of strongly cracked clay soil was instrumented with eight suction samplers, ten zero-suction samplers and sixteen pressure transducer tensiometers. Results of three rainfall events labelled with potassium bro
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::24192f41c898f0d3fcf12e6e97b0bae0
https://doi.org/10.1016/0169-7722(95)00016-o
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4
Movement of nonionic organic chemicals in agricultural soils
Autor: Angus J. Beck, Kevin C. Jones, A.E. 'Johnny' Johnston
Publikováno v: Critical Reviews in Environmental Science and Technology. 23:219-248
During the last decade, it has been reported that groundwater, surface water, food crops, livestock, and human tissue have all been contaminated with organic chemicals. Although much of the early work focused on pesticides, more recent studies have s
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad1b205a1169a5edbf9c128a3b80bebc
https://doi.org/10.1080/10643389309388452
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7
Possibilities for reducing nitrate leaching from agricultural land
Autor: A.E. Johnny Johnston, Lars Bergström, Holger Kirchmann
Publikováno v: Ambio. 31(5)
Agricultural soil is a contributor of nitrate to natural waters. High nitrate levels in water leached from soils are related to high nitrate concentrations in drinking water, and excess levels change the ecological balance of rivers and lakes. In thi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::87ef60741f275f5f584f333eea424315
https://pubmed.ncbi.nlm.nih.gov/12374048
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8
Effect of crop residue management and drainage on the persistence and movement of Isoproturon in a structured clay soil over the growing season of a winter barley crop
Autor: K. Roger Howse, A.E. 'Johnny' Johnston, G. L. Harris, Kevin C. Jones, Angus J. Beck
The persistence of isoproturon [3-(4-isopropylphenyl)-1,1-dimethylurea)] in the cultivated horizon and losses from mole drains in a structured clay soil sown with winter barley and managed by crop residue burning and ash incorporation were compared w
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac658f0b8f0738924c7cb93773010386
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9
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