The effect of 72 years of sugarcane residues and fertilizer management on soil physico-chemical properties

Mthimkhulu, Sandile; Podwojewski, Pascal; Hughes, J. C.; Titshall, Louis; Antwerpen, R. van

doi:10.1016/j.agee.2016.04.002

Cited by 24 publications

(11 citation statements)

References 29 publications

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“…Assuming that the experimental sites have not reached their dynamic equilibrium, the maintenance of straw in the field would increase the soil C level. However, as soil C accumulation is strongly influenced by local conditions (Brandani et al, 2015;Cerri et al, 2011), a direct response between C incorporation (via maintenance of plant residues) and soil C accumulation may not be found (Mthimkhulu et al, 2016;Thorburn et al, 2012), as verified in the present study ( Figure 1).…”

Section: Impact Of Straw Removal On Soil C and Nsupporting

confidence: 75%

Crop prediction and soil response to sugarcane straw removal

Satiro¹

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Crop prediction and soil response to sugarcane straw removal Concerns about global warming and climate change have triggered a growing demand for renewable energy. In this scenario, the interest in using sugarcane straw as raw material for energy production has increased. However, straw plays an important role in maintaining soil quality. In addition, uncertainties as to produced straw amount and the straw removal impact on the stalk yield have raised doubts as to the use this raw material. In this sense, the objective this study was evaluate the short-term (2-year) the sugarcane straw removal impacts on soil and yield modeling of sugarcane stalk and straw, using soil attributes of different layers. Two experiments were carried out in São Paulo state, Brazil: one at Capivari (sandy clay loam soil) and another at Valparaíso (sandy loam soil). We have tested five rates of straw removal (i.e., equivalent to 0, 25, 50, 75 and 100 %). Soil samples were taken from 0-2.5, 2.5-5, 5-10, 10-20 and 20-30 cm layers to analyze pH, total C and N, P, K, Ca, Mg, bulk density and soil penetration resistance. Plant samples were collected to determine the straw and stalk yield. The impacts caused by straw removal differed between the areas, however, they concentrated on the more soil superficial layer. In sandy clay loam soil, straw removal led to organic carbon depletion and soil compaction, while in the sandy loam soil the chemical attributes (i.e. Ca and Mg contents) were the most impacted. In general, the results suggest that straw removal causes reduction more significant in soil quality for the sandy clay loam soil. The results indicate the possibility to remove about half-straw amount deposited on soil's surface (8.7 Mg ha-1 straw remaining) without causing severe implications on the quality of this soil. In contrast, although any amount of straw was sufficient to cause alterations the quality of the sandy loam soil, these impacts were less intense and are not magnified with the increase of straw removal. It was possible to model sugarcane straw and stalk yield using soil attributes. The 0-20 cm layer was the most important layer in the stalk yield definition, whereas the 0-5 cm layer, which the impacts caused by the straw removal were concentrated, was less important. Thus, we noticed that impacts caused to soil by straw removal have little influence on crop productivity. Straw prediction has proved more complex and possibly requires additional information (e.g crop and climate information) for good results to be obtained. Overall, the results suggest that the planned removal of straw for energy purposes can occur in a sustainable way, but should take into account site conditions, e.g soil properties. However, long-term research with different approaches is still necessary, both to follow up and confirm our results, and to develop ways to reduce damage caused by this activity

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Section: Impact Of Straw Removal On Soil C and Nsupporting

confidence: 75%

Crop prediction and soil response to sugarcane straw removal

Satiro¹

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“…A soil with a high organic matter content and CEC as found in CS and VS has been related to a large pH buffering capacity (Xu et al, 2012). This could explain why the application of highly acidic vinasses (as de- It has been reported that soils cultivated with sugarcane crop have an organic matter high content (59 g kg -1 to 6.9 g kg -1 ) and high total nitrogen content (1.8 g kg -1 to 2.4 g kg -1 ) (Mthimkhulu et al, 2016), which are concordant with values and the classification found in this study. Also a phaeozem soil is characterized by a pH ranging from 5 to 7 (FAO, 2014) and the pH of sugarcane soils is reported on a wide range from 4.5 to 6.0 depending on fertilizer application rates and soil type (Azevedo et al, 2014;Mthimkhulu et al, 2016).…”

Section: Soil and Vinasse Characterizationmentioning

confidence: 93%

Presence and diversity of arbuscular mycorrhizal fungi in soil regularly irrigated with vinasses

Sanchez-Lizarraga¹,

Dendooven

Marino-Marmolejo

et al. 2017

J. Soil Sci. Plant Nutr.

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The application of organic waste products, such as vinasses to the soil is a common practice in different countries. Vinasses are a residual liquid generated during various processes such as ethanol production and beverages distillation. However, little is known about how the vinasses affect the content and species distribution of arbuscular mycorrhizal fungi (AMF) in soils irrigated with vinasses. The aim of this research was to determine the presence, spore density and taxonomic identification of AMF to assess in vinasses irrigated (VS) and unirrigated soils (CS). Sixteen species were identified in irrigated and unirrigated soils, with a predominance of Acaulospora mellea, A. scrobiculata, Funneliformis geosporum, F. mosseae and Paraglomus occultum. Only Clareidoglomus etunicatum, Septoglomus constrictum, and Racocetra gregaria were found in VS, while A. morrowiae and Scuttelospora reticulate were only found in CS. The AMF abundance, root colonization, richness and biodiversity indices were not affected by vinasses application. It was found that irrigation of soil with vinasses seemed to have only a limited effect on AMF. To our knowledge, this is the first description of the species of AMF present in soil frequently irrigated with vinasse. This study could serve as a base for further investigations into the effect of vinasse on the soil microbial community and crop yields.

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“…Aher et al found that the soil organic carbon (SOC) showed highest accumulation under the treatments receiving organic manures alone or in combination with liquid organics resulted 20 increase in SOC over control and 13 ) at addition of organic amendments improved the soil properties and create a favorable soil environment for improving biological and microbial activities that resulted in increased SMBC. Mthimkhulu et al [10] showed that addition of organic substances increased the soil organic carbon and accelerated the microbial activities in all treatments. Aher et al [11] also found that the soil organic carbon (SOC) showed highest accumulation under the treatments receiving organic manures alone or in liquid organics resulted 20-23% increase in SOC over control and 13-16% over conventional farming under soybean ( max, cv.…”

Section: Carbon Parametersmentioning

confidence: 98%

Effect of Organic Amendments on Soil Carbon Stock, Yield and Quality of Sugarcane Ratoon

Priyadarshi

Thakur

Jha

et al. 2021

IJECC

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A field experiment was conducted during 2018-20 to evaluate the effect of different organic amendments on yield and quality of sugarcane ratoon in calcareous soil at Crop Research Centre, farm at Dr. Rajendra Prasad Central Agricultural University, Pusa, Bihar. The experiment was conducted in randomized block design with 8 treatments viz. control, FYM (farmyard manure) @ 20 t ha-1, biocompost (BC) @ 20 t ha-1, vermicompost (VC) @ 5.0 t ha-1, green manure with moong, sugarcane trash @ 10 t ha-1, FYM + BC+ VC (1: 1: 0.5) @ 20 t ha-1 and recommended dose of fertilizer (RDF) as NPK (170: 50: 60 kg ha-1) and replicated thrice in sugarcane plant-ratoon system. The sugarcane plant crop was taken and after harvest of plant, the ratoon crop was initiated. Addition of organic amendments significantly increased the number of tillers, millable cane and ratoon cane yield which was at par with recommended dose of fertilizer. The cane juice quality was not affected due to different treatments. The mean cane yield (61.7 - 77.1 t ha-1) and sugar yield (4.06-10.56 t ha-1) varied significantly in organic added plots t ha-1 which was found at par with RDF. The sugar yield followed the similar trends of cane yield. The SMBC (soil microbial biomass carbon), CO2 evolution and carbon stocks were significantly higher in organic amendment added plots indicating improvement in soil carbon status. The highest value of CO2 evolution, SMBC and carbon stocks were observed in the treatment receiving FYM+BC+VC in combination (1: 1: 0.5). Organic amendments had beneficial impact on restoration of soil carbon status, cane and sugar yield of ratoon crop of sugarcane in calcareous soil.

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The effect of 72 years of sugarcane residues and fertilizer management on soil physico-chemical properties

Cited by 24 publications

References 29 publications

Crop prediction and soil response to sugarcane straw removal

Crop prediction and soil response to sugarcane straw removal

Presence and diversity of arbuscular mycorrhizal fungi in soil regularly irrigated with vinasses

Effect of Organic Amendments on Soil Carbon Stock, Yield and Quality of Sugarcane Ratoon

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