Long-term potash application and wheat straw return reduced soil potassium fixation and affected crop yields in North China

Tan, Deshui; Liu, Zhaohui; Jiang, Lihua; Luo, Jiafa; Li, Jie

doi:10.1007/s10705-017-9843-0

Cited by 29 publications

(26 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The efficiency ratio of exogenous K was used to assess the apparent bioavailability after K addition to soil, which is defined as the ratio of the increase in AK relative to exogenous K addition, according to Eq 1 [11,29,31]:…”

Section: Calculations and Statistical Analysismentioning

confidence: 99%

“…Moreover, the K content of plants is not linked to organic compounds and can therefore be easily released and available after straw return [21][22]. It has been well documented that both crop yield and soil K availability can be improved by long-term straw return [11,23,24]. In China, crop straw return is widely practiced in agricultural production [25,26]; however, relying only on internal circulation of the soil-plant system is not sufficient to relieve the soil K deficit.…”

Section: Introductionmentioning

confidence: 99%

“…Soils in the main agricultural areas of northern China are generally developed from K-rich parent materials; hence, the soil K content is not a major limiting factor in crop production [10,11,29]. The winter wheat (Triticum aestivum L.)-summer maize (Zea mays L.) rotation system is commonly practiced in these areas and is characterized by intensive agriculture with a high input of N and P but inadequate K addition [12,14,19,39].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Potassium fertilization combined with crop straw incorporation alters soil potassium fractions and availability in northwest China: An incubation study

et al. 2020

PLoS ONE

View full text Add to dashboard Cite

Potassium (K) input is essential for the improvement of soil fertility in agricultural systems. However, organic amendment may differ from mineral K fertilization with respect to modifying the soil K transformation among different fractions, affecting soil K availability. We conducted a 60-day lab incubation experiment to evaluate the response of soil K dynamics and availability in various fractions with a view to simulating crop residue return and chemical K fertilization in an Anthrosol of northwest China. The tested soil was divided into two main groups, no K fertilization (K0) and K fertilization (K1), each of which was subjected to four straw addition regimes: no straw addition (Control), wheat straw addition (WS), maize straw addition (MS), and both wheat straw and maize straw addition (WS+MS). Soil K levels in the available (AK) and non-exchangeable (NEK) fractions were both significantly increased after K addition, following the order of K>WS>MS. Fertilizer K was the most efficient K source, demonstrating a 72.9% efficiency in increasing soil AK, while wheat and maize straw exhibited efficiencies of 47.1% and 39.3%, respectively. Furthermore, K fertilization and wheat and maize straw addition increased the soil AK in a cumulative manner when used in combination. The mobility factor (M F) and reduced partition index (I R) of soil K were used to quantitate the comprehensive soil K mobility and stability, respectively. Positive relationships were observed between the M F and all relatively available fractions of soil K, whereas the I R value of soil K correlated negatively with both M F and all available fractions of soil K. In conclusion, straw amendment could be inferior to mineral K fertilization in improving soil K availability when they were almost equal in the net K input. Crop straw return coupled with K fertilization can be a promising strategy for improving both soil K availability and cycling in soil-plant systems.

show abstract

Section: Calculations and Statistical Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Potassium fertilization combined with crop straw incorporation alters soil potassium fractions and availability in northwest China: An incubation study

et al. 2020

PLoS ONE

View full text Add to dashboard Cite

show abstract

“…The most effective measure is increasing the organic input, such as with the application of organic manure or compost [7,8] and straw incorporation [9,10]. Crop straw, an easy-to-get, nutrient-rich resource, has great value for improving soil fertility [10,11]. Many studies have reported that crop straw is rich in nutrients and organic materials, can be treated as a natural organic fertilizer, and used as an alternative to chemical fertilizers [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Effects of Full Straw Incorporation on Soil Fertility and Crop Yield in Rice-Wheat Rotation for Silty Clay Loamy Cropland

et al. 2019

View full text Add to dashboard Cite

This 2-year field experiment investigated the effects of full straw incorporation on soil fertility and crop yield in a rice-wheat (Oryza sativa L.–Triticum aestivum L.) rotation on sandy, loamy soil. Two treatments were tested: (i) straw removal (CK) and (ii) straw incorporation (STR). The STR significantly increased the wheat yield by an average of 58% compared with CK; however, no significant difference was found in the rice yield. Soil available nitrogen, phosphorus, and potassium in the 0–20 cm soil layer increased by more than 15% with STR compared to CK. The soil cation exchange capacity and organic carbon in the 0–20 cm soil layer increased by 8% and 22%, for STR compared to CK, respectively. Straw incorporation significantly elevated the soil saturated water content but decreased the soil bulk density compared with CK. Soil aggregates >2 mm were significantly increased after straw return. STR also notably increased the soil urease, invertase, and catalase activities in the 0–15 cm soil layer by 11.4%, 41.0%, and 12.9%, respectively, and the soil microbial carbon and nitrogen contents in the 0–20 cm soil layer by 59% and 54%. Therefore, full straw incorporation could significantly improve soil fertility and maintain crop yields for the study area.

show abstract

“…Muscuvite (60-90 g/kg K), biotite (36-80 g/kg K), illite (32-56 g/kg K) and K-feldespars (20-30 g/kg K) are the most important K pools in soils (Mengel, 2006). A long-term non-application of K would cause a large amount of soil K to be depleted (Tan et al, 2017). In arid and semi-arid regions, intensive agriculture without application of K fertilizer could cause a decrease of K in soils, despite a large amounts of K exist in soils (Jalali, 2006).…”

Section: Introductionmentioning

confidence: 99%

Potassium forms in calcareous soils as affected by clay minerals and soil development in Kohgiluyeh and Boyer-Ahmad Province, Southwest Iran

Shakeri

Abtahi

2018

J. Arid Land

View full text Add to dashboard Cite

Potassium (K) is known as one of the essential nutrients for the growth of plant species. The relationship between K and clay minerals can be used to understand the K cycling, and assess the plant uptake and potential of soil K fertility. This study was conducted to analyze the K forms (soluble, exchangeable, non-exchangeable and structural) and the relationship of K forms with clay minerals of calcareous soils in Kohgiluyeh and Boyer-Ahmad Province, Southwest Iran. The climate is hotter and drier in the west and south of the province than in the east and north of the province. A total of 54 pedons were dug in the study area and 32 representative pedons were selected. The studied pedons were mostly located on calcareous deposits. The soils in the study area can be classified into 5 orders including Entisols, Inceptisols, Mollisols, Alfisols and Vertisols. The main soil clay minerals in the west and south of the study area were illite, chlorite and palygorskite, whereas they were smectite, vermiculite and illite in the north and east of the province. Due to large amount of smectite and high content of organic carbon in soil surface, the exchangeable K in surface soils was higher than that in subsurface soils. It seems that organic matter plays a more important role than smectite mineral in retaining exchangeable K in the studied soils. Non-exchangeable K exhibited close relationships with clay content, illite, vermiculite and smectite. Although the amount of illite was the same in almost all pedons, amounts of structural and non-exchangeable K were higher in humid regions than in arid and semi-arid regions. This difference may be related to the poor reservoir of K + minerals like palygorskite and chlorite together with illite in arid and semi-arid regions. In humid areas, illite was accompanied by vermiculite and smectite as the K + reservoir. Moreover, the mean cumulative non-exchangeable K released by CaCl 2 was higher than that released by oxalic acid, which may be due to the high buffering capacity resulting from high carbonates in soils.

show abstract

Long-term potash application and wheat straw return reduced soil potassium fixation and affected crop yields in North China

Cited by 29 publications

References 28 publications

Potassium fertilization combined with crop straw incorporation alters soil potassium fractions and availability in northwest China: An incubation study

Potassium fertilization combined with crop straw incorporation alters soil potassium fractions and availability in northwest China: An incubation study

Effects of Full Straw Incorporation on Soil Fertility and Crop Yield in Rice-Wheat Rotation for Silty Clay Loamy Cropland

Potassium forms in calcareous soils as affected by clay minerals and soil development in Kohgiluyeh and Boyer-Ahmad Province, Southwest Iran

Contact Info

Product

Resources

About