Influence of cropping systems on soil biochemical properties in an arid rain-fed environment

1995 ◽  
Vol 31 (2) ◽  
pp. 237-244 ◽  
Author(s):  
A Rao
1996 ◽  
Vol 32 (1) ◽  
pp. 91
Author(s):  
A.V. Rao ◽  
J.C. Tarafdar ◽  
S.K. Sharma ◽  
Praveen- Kumar ◽  
R.K. Aggarwal

PLoS ONE ◽  
2015 ◽  
Vol 10 (12) ◽  
pp. e0144115 ◽  
Author(s):  
Guopeng Liang ◽  
Albert A. Houssou ◽  
Huijun Wu ◽  
Dianxiong Cai ◽  
Xueping Wu ◽  
...  

2009 ◽  
Vol 105 (1) ◽  
pp. 55-62 ◽  
Author(s):  
E. Madejón ◽  
J.M. Murillo ◽  
F. Moreno ◽  
M.V. López ◽  
J.L. Arrue ◽  
...  

Agronomy ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 780
Author(s):  
Muhammad Qaswar ◽  
Jing Huang ◽  
Waqas Ahmed ◽  
Dongchu Li ◽  
Shujun Liu ◽  
...  

Cultivation of green manure (GM) crops in intensive cropping systems is important for enhancing crop productivity through soil quality improvement. We investigated yield sustainability, nutrient stocks, nutrient balances and enzyme activities affected by different long-term (1982–2016) green manure rotations in acidic paddy soil in a double-rice cropping system. We selected four treatments from a long-term experiment, including (1) rice-rice-winter fallow as a control treatment (R-R-F), (2) rice-rice-milkvetch (R-R-M), (3) rice-rice-rapeseed (R-R-R), and (4) rice-rice-ryegrass (R-R-G). The results showed that different GM rotations increased grain yield and the sustainable yield index compared with those of the R-R-F treatment. Compared with those of R-R-F, the average grain yield of early rice in R-R-M, R-R-R, and R-R-G increased by 45%, 29%, and 27%, respectively and that of late rice increased by 46%, 28%, and 26%, respectively. Over the years, grain yield increased in all treatments except R-R-F. Green manure also improved the soil chemical properties (SOM and total and available N and P), except soil pH, compared to those of the control treatment. During the 1983–1990 cultivation period, the soil pH of the R-R-M treatment was lower than that of the R-R-F treatment. The addition of green manure did not mitigate the soil acidification caused by the use of inorganic fertilizers. The soil organic matter (SOM), total nitrogen (TN) and total phosphorus (TP) contents and stocks of C, N and P increased over the years. Furthermore, GM significantly increased phosphatase and urease activities and decreased the apparent N and P balances compared with those in the winter fallow treatment. Variance partitioning analysis revealed that soil properties, cropping systems, and climatic factors significantly influenced annual grain yield. Aggregated boosted tree (ABT) analysis quantified the relative influences of the different soil properties on annual grain yield and showed that the relative influences of TN content, SOM, pH, and TP content on annual crop yield were 27.8%, 25.7%, 22.9%, and 20.7%, respectively. In conclusion, GM rotation is beneficial for sustaining high crop yields by improving soil biochemical properties and reducing N and P balances in acidic soil under double- rice cropping systems.


1998 ◽  
Vol 78 (4) ◽  
pp. 581-587 ◽  
Author(s):  
Roger Lalande ◽  
Bernard Gagnon ◽  
Régis R. Simard

Addition of compost from various sources and of different maturity may affect the soil biochemical properties. A field study was conducted to evaluate the effect of different composts, spring-applied alone or in combination with ammonium nitrate (AN), on microbial biomass C (MBC) and alkaline phosphatase activity (APA) in two soils cropped with spring wheat (Triticum aestivum L. 'Messier') in eastern Quebec, Canada. The experiment was conducted in 1994 and 1995 at different sites on a Kamouraska clay (Orthic Humic Gleysol) and a Saint-André sandy loam (Fragic Humo-Ferric Podzol). Treatments included composts at 180 kg N ha−1, composts at 90 kg N ha−1 supplemented with AN, AN at 90 kg N ha−1, and an unfertilized control. Soil MBC and APA were measured 30 d after compost application and at wheat harvest. Additional sampling was made the following spring. Generally, larger MBC and APA values were found at wheat harvest in soils treated with composts alone than with AN alone or unfertilized. These effects were related to soil C content and climatic conditions. Compost type affected soil biochemical properties which could be attributed to the total C supply and material maturation state. Compost addition constitutes an efficient short-term way to promote soil microbial biomass and enzyme activity in cold climates. Key words: Compost, fertilizer, microbial biomass, soil enzyme, wheat


2014 ◽  
Vol 34 (7) ◽  
Author(s):  
吴波波 WU Bobo ◽  
郭剑芬 GUO Jianfen ◽  
吴君君 WU Junjun ◽  
任卫岭 REN Weiling ◽  
刘小飞 LIU Xiaofei ◽  
...  

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