scholarly journals Long term changes in soil properties and enzyme activities after almond shell mulching in avocado organic production

2014 ◽  
Vol 143 ◽  
pp. 155-163 ◽  
Author(s):  
Rafael López ◽  
Pilar Burgos ◽  
José M. Hermoso ◽  
José I. Hormaza ◽  
J. Jorge González-Fernández
Keyword(s):  
Soil Properties ◽  
Enzyme Activities ◽  
Organic Production ◽  
Almond Shell ◽  
Long Term Changes ◽  
Changes In Soil Properties

Assessing changes in soil properties in the eastern part of the Nile delta over a long-term period

2015 ◽  
Vol 41 (1) ◽  
pp. 40-44
Author(s):  
El Sayed said Mohamed Mohamed ◽  
A. V. Shuravilin ◽  
M. U. Lyashko ◽  
Abdel-Nasser Rashash
Keyword(s):  
Soil Properties ◽  
Nile Delta ◽  
Changes In Soil Properties

Soil responses to topsoil replacement depth and organic amendments in wellsite reclamation

2005 ◽  
Vol 85 (2) ◽  
pp. 307-317 ◽  
Author(s):  
Francis J. Larney ◽  
Olalekan O. Akinremi ◽  
Reynald L. Lemke ◽  
Vasile E. Klaassen ◽  
H. Henry Janzen
Keyword(s):  
Soil Properties ◽  
Nitrate Nitrogen ◽  
Organic Amendments ◽  
Soil Surface ◽  
Triticum Aestivum L ◽  
Organic N ◽  
Medicago Sativa L ◽  
Soil Responses ◽  
Changes In Soil Properties

Changes in soil properties reflect the success or failure of reclamation practices on abandoned wellsites. We examined the effect on soil properties of four (0, 50, 100 and 150%) topsoil replacement depths (TRD) and five amendment treatments [compost, manure, wheat (Triticum aestivum L.) straw, alfalfa (Medicago sativa L.) hay, check] aimed at reclaiming three wellsites (Strathmore, Hesketh and Rosedale) in southcentral Alberta. TRD treatment differences were consistent across all wellsites, with 30 to 32% higher soil organic carbon (SOC) on the 150% TRD compared to the 0% TRD. Initially, the alfalfa treatment showed higher levels of nitrate-nitrogen (e.g., 26 mg kg-1 vs. 3 to 7 mg kg-1 for the other amendment treatments in the 15- to 30-cm depth at Strathmore in fall 1998), which was related to its rapid breakdown and mineralization of organic N. After 40 mo (June 1997-October 2000), the average amounts (n = 3 wellsites) of added C conserved near the soil surface were: compost (65 ±10% SE) > manure (45 ±16% SE) > alfalfa (28 ±11% SE) > straw (23 ± 6% SE). Our results show that organic amendments play an important role in improving soil properties related to long-term productivity of reclaimed wellsites, especially where topsoil is scarce or absent. Key words: Wellsite reclamation, topsoil depth, organic amendments, soil quality

CHANGES IN SOIL PROPERTIES AND EARTHWORM POPULATIONS INDUCED BY LONG-TERM ORGANIC FERTILIZATION OF A SANDY SOIL IN THE VENEZUELAN AMAZONIA

Soil Science ◽  
2004 ◽  
Vol 169 (3) ◽  
pp. 188-194 ◽  
Author(s):  
D. López-Hernández ◽  
Y. Araujo ◽  
A. López ◽  
I. Hernández-Valencia ◽  
C. Hernández
Keyword(s):  
Soil Properties ◽  
Sandy Soil ◽  
Organic Fertilization ◽  
Earthworm Populations ◽  
Changes In Soil Properties

scholarly journals Soil microbiological properties and enzymatic activities of long-term post-fire recovery in dry and semiarid Aleppo pine (<i>Pinus halepensis</i> M.) forest stands

2014 ◽  
Vol 6 (2) ◽  
pp. 3025-3050 ◽  
Author(s):  
J. Hedo ◽  
M. E. Lucas-Borja ◽  
C. Wic ◽  
M. Andrés Abellán ◽  
J. de Las Heras
Keyword(s):  
Soil Properties ◽  
Enzyme Activities ◽  
Pinus Halepensis ◽  
Microbial Biomass Carbon ◽  
Aleppo Pine ◽  
Forest Stands ◽  
Fire Event ◽  
Total N ◽  
Silvicultural Treatments

Abstract. Wildfires affecting forest ecosystems and post-fire silvicultural treatments may cause considerable changes in soil properties. The capacity of different microbial groups to recolonize soil after disturbances is crucial for proper soil functioning. The aim of this work was to investigate some microbial soil properties and enzyme activities in semiarid and dry Aleppo pine (Pinus halepensis M.) forest stands. Different plots affected by a wildfire event 17 years ago without or with post-fire silvicultural treatments five years after the fire event were selected. A mature Aleppo pine stand unaffected by wildfire and not thinned was used as a control. Physicochemical soil properties (soil texture, pH, carbonates, organic matter, electrical conductivity, total N and P), soil enzymes (urease, phosphatase, β-glucosidase and dehydrogenase activities), soil respiration and soil microbial biomass carbon were analysed in the selected forests areas and plots. The main finding was that long time after this fire event produces no differences in the microbiological soil properties and enzyme activities of soil after comparing burned and thinned, burned and not thinned, and mature plots. Thus, the long-term consequences and post-fire silvicultural management in the form of thinning have a significant effect on the site recovery after fire. Moreover, significant site variation was generally seen in soil enzyme activities and microbiological parameters. We conclude that total vegetation restoration normalises microbial parameters, and that wildfire and post-fire silvicultural treatments are not significant factors of soil properties after 17 years.

scholarly journals Soil-Food-Environment-Health Nexus for Sustainable Development

Research ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-4
Author(s):  
Baojing Gu ◽  
Deli Chen ◽  
Yi Yang ◽  
Peter Vitousek ◽  
Yong-Guan Zhu
Keyword(s):  
Sustainable Development ◽  
Soil Properties ◽  
Human Health ◽  
Environmental Quality ◽  
Food Environment ◽  
Management Practices ◽  
Long Term Effects ◽  
Changes In Soil Properties

Changes in soil properties and processes can influence food and environmental quality, thus, affecting human health and welfare through biogeochemical cascades among soil, food, environment, and human health. However, because many soil properties change much more slowly than do management practices and pollution to soil, the legacy of past influences on soil can have long-term effects on both human health and sustainability. It is essential and urgent to manage soils for health and sustainability through building the soil-food-environment-health nexus.

scholarly journals Long-term changes in the biology of a livestock farm system associated with the shift to organic supply

2006 ◽  
pp. 133-137
Author(s):  
A.D. Mackay ◽  
B.P. Devantier ◽  
W.E. Pomroy
Keyword(s):  
New Zealand ◽  
Organic Production ◽  
Livestock Farm ◽  
Long Term Changes ◽  
Farm Systems ◽  
Farm System ◽  
Livestock Systems ◽  
Conventional Farm

A long-term replicated farm systems study (1997-2005) examined changes in the biology of mixed-livestock systems associated with the shift to organic production. Two farmlets were managed using conventional farm practices (Con) and two low chemical (LC) farmlets complied with the organic production standards of BIOGRO New Zealand. The Con farmlet had higher (P

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