Long-Term Land Management Effects on Crop Yields and Soil Properties in the Sub-humid Highlands of Kenya

2011 ◽  
pp. 169-174 ◽  
Author(s):  
C.N. Kibunja ◽  
F.B. Mwaura ◽  
D.N. Mugendi ◽  
D.K. Wamae ◽  
A. Bationo
Keyword(s):  
Soil Properties ◽  
Land Management ◽  
Crop Yields ◽  
Management Effects

scholarly journals Soil properties after 36 years of N fertilization under continuous corn and corn-soybean management

2021 ◽  
Author(s):  
Nakian Kim ◽  
Gevan D. Behnke ◽  
María B. Villamil
Keyword(s):  
Soil Properties ◽  
Crop Rotation ◽  
Crop Yields ◽  
Inorganic Nitrogen ◽  
Block Design ◽  
N Fertilization ◽  
Total Carbon ◽  
Nitrous Oxide Emissions ◽  
Continuous Corn

Abstract. Modern agricultural systems rely on inorganic nitrogen (N) fertilization to enhance crop yields, but its overuse may negatively affect soil properties. Our objective was to investigate the effect of long-term N fertilization on key soil properties under continuous corn [Zea mays L.] (CCC) and both the corn (Cs) and soybean [Glycine max L. Merr.] (Sc) phases of a corn-soybean rotation. Research plots were established in 1981 with treatments arranged as a split-plot design in a randomized complete block design with three replications. The main plot was crop rotation (CCC, Cs, and Sc), and the subplots were N fertilizer rates of 0 kg N ha−1 (N0, controls), and 202 kg N ha−1, and 269 kg N ha−1 (N202, and N269, respectively). After 36 years and within the CCC, the yearly addition of N269 compared to unfertilized controls significantly increased cation exchange capacity (CEC, 65 % higher under N269) and acidified the top 15 cm of the soil (pH 4.8 vs. pH 6.5). Soil organic matter (SOM) and total carbon stocks (TCs) were not affected by treatments, yet water aggregate stability (WAS) decreased by 6.7 % within the soybean phase of the CS rotation compared to CCC. Soil bulk density (BD) decreased with increased fertilization by 5 % from N0 to N269. Although ammonium (NH4+) did not differ by treatments, nitrate (NO3−) increased eight-fold with N269 compared to N0, implying increased nitrification. Soils of unfertilized controls under CCC have over twice the available phosphorus level (P) and 40 % more potassium (K) than the soils of fertilized plots (N202 and N269). On average, corn yields increased 60 % with N fertilization compared to N0. Likewise, under N0, rotated corn yielded 45 % more than CCC; the addition of N (N202 and N269) decreased the crop rotation benefit to 17 %. Our results indicated that due to the increased level of corn residues returned to the soil in fertilized systems, long-term N fertilization improved WAS and BD, yet not SOM, at the cost of significant soil acidification and greater risk of N leaching and increased nitrous oxide emissions.

Soil properties currently limiting crop yields in Swedish agriculture – An analysis of 90 yield survey districts and 10 long-term field experiments

2020 ◽  
Vol 120 ◽  
pp. 126132
Author(s):  
Holger Kirchmann ◽  
Gunnar Börjesson ◽  
Martin A. Bolinder ◽  
Thomas Kätterer ◽  
Faruk Djodjic
Keyword(s):  
Soil Properties ◽  
Field Experiments ◽  
Crop Yields ◽  
Term Field

Long-term Management Effects on Soil Properties and Yields in a Wheat-Soybean Double-Crop System in Eastern Arkansas

Soil Science ◽  
2016 ◽  
Vol 181 (1) ◽  
pp. 1-12 ◽  
Author(s):  
C. Ryan Norman ◽  
Kristofor R. Brye ◽  
Edward E. Gbur ◽  
Pengyin Chen ◽  
John Rupe
Keyword(s):  
Soil Properties ◽  
Term Management ◽  
Crop System ◽  
Management Effects

scholarly journals Manure application increased crop yields by promoting nitrogen use efficiency in the soils of 40-year soybean-maize rotation

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Wei Hua ◽  
Peiyu Luo ◽  
Ning An ◽  
Fangfang Cai ◽  
Shiyu Zhang ◽  
...  
Keyword(s):  
Soil Properties ◽  
Nitrogen Use Efficiency ◽  
Crop Yields ◽  
N Use Efficiency ◽  
Organic Fertilizers ◽  
N Recovery ◽  
Nitrogen Use ◽  
Use Efficiency ◽  
N Use

Abstract It is great of importance to better understand the effects of the long-term fertilization on crop yields, soil properties and nitrogen (N) use efficiency in a rotation cropping cultivation system under the conditions of frequent soil disturbance. Therefore, a long-term field experiment of 40 years under soybean-maize rotation was performed in a brown soil to investigate the effects of inorganic and organic fertilizers on crop yields, soil properties and nitrogen use efficiency. Equal amounts of 15N-labelled urea with 20.8% of atom were used and uniformly applied into the micro-plots of the treatments with N, NPK, M1NPK, M2NPK before soybean sowing, respectively. Analyses showed that a total of 18.3–32.5% of applied N fertilizer was taken up by crops in the first soybean growing season, and that the application of manure combining with chemical fertilizer M2NPK demonstrated the highest rate of 15N recovery and increased soil organic matter (SOM) and Olsen phosphorus (Olsen P), thereby sustaining a higher crop yield and alleviating soil acidification. Data also showed that no significant difference was observed in the 15N recovery from residue N in the second maize season plant despite of showing a lower 15N recovery compared with the first soybean season. The recovery rates of 15N in soils were ranged from 38.2 to 49.7% by the end of the second cropping season, and the residuals of 15N distribution in soil layers revealed significant differences. The M2NPK treatment demonstrated the highest residual amounts of 15N, and a total of 50% residual 15N were distributed in a soil layer of 0–20 cm. Our results showed that long-term application of organic fertilizers could effectively promote N use efficiency by increasing SOM and improving soil fertility, and thus leading to an increase in crop yields. This study will provide a scientific reference and guidance for improving soil sustainable productivity by manure application.

Long-term cover crop management effects on soil properties in dryland cropping systems

2022 ◽  
Vol 328 ◽  
pp. 107852
Author(s):  
Logan M. Simon ◽  
Augustine K. Obour ◽  
Johnathon D. Holman ◽  
Kraig L. Roozeboom
Keyword(s):  
Soil Properties ◽  
Cover Crop ◽  
Cropping Systems ◽  
Crop Management ◽  
Management Effects

scholarly journals Sulphur Dynamics under different land uses of Outer Himalayan region of Himachal Pradesh

2021 ◽  
Vol 22 (3) ◽  
pp. 265-270
Author(s):  
Deepika Suri ◽  
V. K. Sharma ◽  
Pardeep Kumar ◽  
R. G. Upadhayay ◽  
Gazala Nazir ◽  
...  
Keyword(s):  
Soil Properties ◽  
Crop Yields ◽  
Clay Content ◽  
Himachal Pradesh ◽  
Water Soluble ◽  
Land Uses ◽  
Total Sulphur ◽  
Fertilizer Recommendations ◽  
Short And Long Term

The knowledge of different sulphur (S) forms and their relationship with soil properties is of much relevance in assessing the short- and long-term availability of the nutrients to crops and in formulating sound fertilizer recommendations. For this purpose one hundred and one representative soil samples were collected from the study area and analyzed for various physicochemical properties and forms of sulphur (water soluble, exchangeable, available, organic, non-sulphate and total S) using standard methods. The different forms of sulphur viz., water soluble, exchangeable, available, organic, non-sulphate and total sulphur ranged from 1.1 to 7.0, 1.9 to 10.9, 3.1 to 21.1, 75.9 to 316.1, 8.0 to 41.5 and 75.5 to 372.5 mg kg-1, respectively in soils of Outer Himalayas under different land uses. The content of different forms of sulphur present in these soils were in the order of total sulphur, organic sulphur, non-sulphate sulphur, available sulphur, exchangeable sulphur and water soluble sulphur. All the forms of S correlated positively and significantly with organic carbon and clay content of soils. A negative and significant relationship was also observed between all forms of sulphur and sand content of soils. In the present study, it was also found that all forms of S present in soils were significantly and positively correlated with each other. The knowledge regarding different forms of S in soils and their availability controlled by different soil properties will be helpful for its management to optimize crop yields in the Outer Himalayas of Himachal Pradesh.

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