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Changes in soil temperature and moisture due to sugarcane straw removal in central-southern Brazil

Belarmino dos Santos, Arthur Klebson and Popin, Gustavo Vicentini and Gmach, Maria and Cherubin, Mauricio Roberto and Neto, Marcos Siqueira and Peregrino Cerri, Carlos Eduardo (2022). Changes in soil temperature and moisture due to sugarcane straw removal in central-southern Brazil. Scientia Agrícola. 79 , e20200309
[Research article]

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Abstract

Crop residues left in the field cover and protect the soil surface, and regulate key processes and functions, such as gas and water exchanges. However, the Brazilian sugarcane (Saccharum officinarum L.) sector has begun to use straw as feedstock to produce bioenergy. We conducted a field study to evaluate the effects of sugarcane straw removal in soil temperature and moisture changes at three sites (with different soil textures: Site 1 - clayey Oxisol, Site 2 - medium texture Oxisol, and Site 3 - sandy Ultisol) in the state of Sao Paulo, Brazil. The experimental design was randomized blocks with four rates of straw removal: i) no removal (NR); ii) moderate removal (MR); iii) substantial removal (SR), and iv) total removal (TR). Soil temperature was measured by sensors in the 0- to 5- and 5- to 10-cm soil layers. Undisturbed soil samples were collected from the 0- to 20- and 20- to 40-cm layers to determine soil moisture. Intensive straw removal (HR and TR) increased the soil temperature between 2 and 3 degrees C and the thermal amplitude between 5 and 9 degrees C in the 0- to 5-cm layer, compared to MR and NR. Soil moisture decreased between 0.03 and 0.07 g g(-1) in the 0- to 20-cm layer with intensive straw removal. The sandy soil was more susceptible to straw removal. Therefore, straw maintenance on the soil surface plays an essential role in temperature regulation and preservation of higher soil moisture, especially in regions with severe water deficits and long periods of water stress.

Authors/Creators:Belarmino dos Santos, Arthur Klebson and Popin, Gustavo Vicentini and Gmach, Maria and Cherubin, Mauricio Roberto and Neto, Marcos Siqueira and Peregrino Cerri, Carlos Eduardo
Title:Changes in soil temperature and moisture due to sugarcane straw removal in central-southern Brazil
Series Name/Journal:Scientia Agrícola
Year of publishing :2022
Volume:79
Article number:e20200309
Number of Pages:12
Publisher:UNIV SAO PAOLO
ISSN:0103-9016
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Soil Science
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Keywords:bioenergy, agricultural residues, crop residue management, soil moisture, soil heat
URN:NBN:urn:nbn:se:slu:epsilon-p-114651
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-114651
Additional ID:
Type of IDID
DOI10.1590/1678-992X-2020-0309
Web of Science (WoS)000723202200001
ID Code:26292
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Ecology
(S) > Dept. of Ecology
Deposited By: SLUpub Connector
Deposited On:09 Dec 2021 14:25
Metadata Last Modified:09 Dec 2021 14:31

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