Long-term effects of tillage systems on liming efficiency, soil chemical properties and wheat yield in Southern Brazil

Soil Research ◽  
2021 ◽  
Author(s):  
Sérgio Ricardo Silva ◽  
Henrique Pereira dos Santos ◽  
Rômulo Pisa Lollato ◽  
Anderson Santi ◽  
Renato Serena Fontaneli
Keyword(s):  
Wheat Yield ◽  
Chemical Properties ◽  
Soil Chemical Properties ◽  
Southern Brazil ◽  
Long Term Effects ◽  
Tillage Systems

LONG-TERM EFFECT OF DEEP PLOWING SOLONETZIC SOIL ON CHEMICAL CHARACTERISTICS AND CROP YIELD

1990 ◽  
Vol 70 (4) ◽  
pp. 565-570 ◽  
Author(s):  
D. W. McANDREW ◽  
S. S. MALHI
Keyword(s):  
Crop Yield ◽  
Crop Yields ◽  
Chemical Properties ◽  
Soil Chemical Properties ◽  
Long Term Effects ◽  
Long Term Effect ◽  
Solonetzic Soil ◽  
Ap Horizon ◽  
Deep Plowing

Deep plowing (DP) has been investigated as a possible ameliorative procedure for Solonetzic soils, but the long-term effects of DP on soil properties are not known. Soil sampling to determine the long-lasting effects of DP on some soil chemical properties and crop yields was conducted at four sites with Solonetzic soils in east-central Alberta. The soils had been deep plowed 11–29 yr prior to sampling. Compared to adjacent unplowed (check) treatments, DP resulted in significant improvements in soil chemical properties at most of the sites. The sodium adsorption ratio (SAR) of the AB horizon (12- or 15- to 30-cm depth) was lower after DP at all four sites. Extractable and soluble Ca increased in the Ap horizon (0–12 cm) of DP soils, whereas extractable Na decreased in the Ap or AB horizons at three sites. The pH of the Ap horizon increased from acidic to neutral at three sites, while EC of the Ap horizon decreased at two sites. Crop yield increased due to DP at the three sites where yields were measured. The results indicate a long-term amelioration of Solonetzic soils by DP. Key words: Amelioration, deep plowing, deep tillage, sodic soil

scholarly journals Long-Term Effects of Amendment with Olive Mill Wastewater on Soil Chemical Properties, Microbial Community, and Olive Tree Vegetative and Productive Activities

Agronomy ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2562
Author(s):  
Luca Regni ◽  
Daniela Pezzolla ◽  
Simona Ciancaleoni ◽  
Giorgio Marozzi ◽  
Emidio Albertini ◽  
...  
Keyword(s):  
Microbial Community ◽  
Chemical Properties ◽  
Olive Tree ◽  
Olive Mill Wastewater ◽  
Soil Chemical Properties ◽  
Available Phosphorus ◽  
Long Term Effects ◽  
Organic C ◽  
Olive Mill

The long-term effects of the olive mill wastewater (OMWW) spreading on soil chemical properties, microbial community, and olive tree parameters have been far poorly investigated. Therefore, this study aims to evaluate the effect of OMWW application on an olive orchard, and samples were collected at two different depths (0–20 cm and 20–40 cm) and 14 days, one year and two years from the end of the OMWW spreading on soil chemical characteristics and soil microbial structures. Variations of soil chemical parameters (pH, salinity, available P, and water-extractable organic C) were observed particularly at 14 days after spreading at both depths. All these parameters reached similar values to the soil after two years, except for available phosphorus. Firmicutes, Proteobacteria, and Actinobacteria are the most abundant phyla: only Firmicutes were negatively affected by the OMWW spreading after 14 days, suggesting that Gram-positive bacteria were probably negatively influenced by the addition of OMWW. The abundance of bacterial taxa in the soil is restored along time, except for the decrease of Firmicutes. This evidence suggests that the OMWW spreading in the long term does not affect the endemic soil bacterial community of the olive grove, as well as leaf net photosynthesis, the olive tree vegetative activity, yield, and fruits characteristics.

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