Effect of bentonite amendment on soil hydraulic parameters and millet crop performance in a semi-arid region

Mi, Junzhen; Gregorich, E.G.; Xu, Shixiao; McLaughlin, Neil; Ma, Bin; Liu, Jinghui

doi:10.1016/j.fcr.2017.07.009

Cited by 64 publications

(41 citation statements)

References 29 publications

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“…In the present study, soils treated with amendments had higher volumetric water content than the untreated soils. This is in agreement with studies conducted by Mi et al [32], who reported a significant improvement in soil physical properties and soil water content in soils amended with bentonite. The addition of amendments significantly reduced soil bulk density (Table 2).…”

Section: Soil Water Retention Curves and Total Porositysupporting

confidence: 93%

Can a Blend of Amendments Be an Important Component of a Rehabilitation Strategy for Surface Coal Mined Soils?

2019

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Soil compaction impedes plant growth by negatively affecting water infiltration, soil aeration, access to soil water and nutrients, and consequently restricts root development. Previous studies to alleviate such problems in rehabilitated mine soils using a single amendment material did not provide a long lasting solution. The aim of the study was to quantify the role of different amendments in alleviating selected soil hydraulic properties. Five single amendment materials and three different blends of amendments were mixed thoroughly with degraded mine soil in a 1:3 (amendment:soil) ratio and packed in columns. Two additional unamended soils with different bulk densities were included as benchmarks. In general, the application of amendments reduced bulk density (BD) by 4-20%, enhanced infiltration rate by 15-70%, increased porosity by 5-35% and increased plant available water (PAW) by 9-33% compared with the unamended soils. Between amendments, the blends of amendments reduced BD by 9-16%, enhanced infiltration rate by 17-59%, increased porosity by 6-32%, and PAW by 4-28% compared with single amendments. The study showed that a blend of amendments have better soil restoration capacity through improving porosity, infiltration rate and plant available water. A blend of amendments therefore has the potential to be a sustainable and an important component of a rehabilitation strategy for surface coal mined soils.

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Section: Soil Water Retention Curves and Total Porositysupporting

confidence: 93%

Can a Blend of Amendments Be an Important Component of a Rehabilitation Strategy for Surface Coal Mined Soils?

2019

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“…; A: inoculation with Azospirillum basilenes; M: Mixture bentonite to soil improve physical, chemical soil properties for cowpea plants and bentonite contain organic matter 1.12%, total nitrogen 0.064% and other trace elements(Table 1)which enhancement plant growth and increase the yield of cowpea. These results are in harmony with those obtained byJunzhen et al (2017) mentioned that, adding bentonite increased plant growth and grain yield. In this respect,…”

supporting

confidence: 92%

“…These results are in harmony with those obtained by Umer and Rajab (2012) were found that, application of organic matter to soil enhancement soil aggregate and caused positive correlation between soil respirations, microbial biomass with soil aggregate stability. Also, Mi et al (2017) show bentonite amendments significantly increased above-ground biomass from 2 to 39% and grain yield from 3 to 20%, as well as improved water use efficiency 29 % through five years.…”

Section: Nitrogenase and Dehydrogenase Activitiesmentioning

confidence: 91%

“…Czaban et al (2013) found that, the addition of bentonite at rates of 3,6 and 12kg/m 2 of soil significantly improved soil structure and increased the amounts of nitrogen and organic matter in sandy soils. According to Mi et al (2017), the addition bentoniteas amendment on soil hydraulic parameters and millet crop performance in a semiarid region significantly increased above-ground biomass and grain yield and improved water use efficiency. They stated that increases ranges were 2 to 39, 3 to 20 and 0 to 29% for aboveground biomass increases, grain yield and water use efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Microbial Inoculation and Bentonite Amendments on Growth, Enzyme activity and Yield of cowpea cultivated in sandy soil

Abdel-Gwad

2019

EBSS

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A FIELD experiment was conducted twice at the farm of Environmental Studies and Research Institute, Sadat City University, Egypt, during the two consecutive seasons of 2015 and 2016 to study the effect of different additives of bentonite (i.e., 0, 3, 6 and 9 t fed -1 ), and microbial inoculation with Bradyrhizobium sp. and Azospirillum brasilense either alone or mixed on vegetative parameters, enzyme activity and yield of cowpea plants. Results revealed that co-inoculation treatment and addition of 9 Mg fed -1 bentonite significantly enhanced plant height, number of branches, fresh and dry weight of plant in both seasons compared with the control at 60 days from sowing and this increase reflected on enzyme activity which attained 25.56, 27.66 µmol/ C 2 H 4 /h/g dry nodules and 50.93, 54.57 µg TPF/g dry soil/h for nitrogenase (N 2 -ase) and dehydrogenase in the two growing seasons, respectively. On the other hand, the highest total seed yield of cowpea was recorded from use the co-inoculation with 9 ton ton/fed which was 0.679 and 0.682 Mg fed -1 for seed yield and 0.316, 0.324 Mgfed -1 for straw yield during 2015 and 2016 seasons, respectively. Consequently, it is to recommend that mixture inoculate with Bradyrhizobium sp. and Azospirillumbrasilense and addition of 9 Mg fed -1 bentonite could be improving crop growth of cowpea and improve sandy soil fertility.

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“…SEC (mS cm −1 ) was measured in suspensions of soil and distilled water (1:5), using a handheld conductivity meter (DDB‐11A, Shanghai Sanxin Instrument Factory, Shanghai, China). SWS (mm) at each layer was calculated according to Equation (1):

SWS ((), mm) = SWC (() %) / 100 \times ρ_{b} ((), normalg {cm}^{- 3}) / ρ_{w} ((), normalg {cm}^{- 3}) \times d ((), mm), ((), 1)

where SWC is gravimetric soil water content, ρ b is soil bulk density, ρ w is water density, and d is soil depth (Mi et al, ).…”

Section: Methodsmentioning

confidence: 99%

Exploring soil amendment strategies with polyacrylamide to improve soil health and oat productivity in a dryland farming ecosystem: One‐time versus repeated annual application

McLaughlin

et al. 2020

Land Degrad Dev

Self Cite

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Degraded lands resulting from human and natural causes are widespread in arid and semiarid regions throughout the world. Polyacrylamide (PAM) soil amendments are increasingly used to remediate these degraded lands with the potential benefits on soil health and crop production. However, the scientific evidence of farm-scale use of one-time versus repeated application of PAM has not been reported. The specific objective of this research was to determine the effects of single versus multiple annual PAM application on (a) the dynamic changes in soil quality parameters and (b) oat crop productivity indicators in a dryland farming ecosystem. Our data illustrated that multiple years of annual application of PAM significantly increased soil profile water storage, whereas it reduced soil bulk density and electrical conductivity in the top (0-20 cm) and deeper layers (20-60 cm) over those for the control or single PAM application. The improved soil microecological environments led to increased activities of soil enzymes urease (up to 106%), invertase (94%), and catalase (45%). These in turn promoted soil nutrient turnover and availability (e.g., 76% higher soil alkaline N) and crop growth leading to the improvement in grain protein (up to 31%), protein yield (58%), and partial factor productivity of nitrogen (20%), than did the control treatment. Taken together, these soil and crop performance indicators suggest that repeated annual PAM application for a minimum of 2-3 years would be an effective strategy to combat drought and land degradation and foster sustainable crop production in dryland agriculture under a changing climate scenario. K E Y W O R D S enzyme activity, nutrient turnover, organic matter, soil amendment, soil electrical conductivity, sustainable dryland farming

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Effect of bentonite amendment on soil hydraulic parameters and millet crop performance in a semi-arid region

Cited by 64 publications

References 29 publications

Can a Blend of Amendments Be an Important Component of a Rehabilitation Strategy for Surface Coal Mined Soils?

Can a Blend of Amendments Be an Important Component of a Rehabilitation Strategy for Surface Coal Mined Soils?

Effect of Microbial Inoculation and Bentonite Amendments on Growth, Enzyme activity and Yield of cowpea cultivated in sandy soil

Exploring soil amendment strategies with polyacrylamide to improve soil health and oat productivity in a dryland farming ecosystem: One‐time versus repeated annual application

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