Evaluation of certain agro-industrial wastes as seed pelletants under adverse soil pH conditions

The costs related to the construction and maintenance of industrial landfills, and the environmental risks that they may represent, have increased the interest of several types of industries in studying the possibility of applying residues to agricultural soils. This study evaluates the efficiency of flue dust as a zinc source for corn, and the zinc availability for corn evaluated by four methods. A greenhouse experiment carried out at Campinas, SP, Brazil, evaluated the effect of two zinc sources (flue dust and zinc sulphate), at three rates (5, 50 and 150 mg dm-3), in one soil (Rhodic Hapludox) under two pH conditions (5.0 and 6.0). The treatments were arranged in a randomized factorial scheme design with three replications. Zinc availability indexes were determined by the pH 7.3 DTPA, Mehlich-1, and Mehlich-3 methods. The free Zn2+ activity in soil solution was calculated by the MINTEQ computer model. The extraction methods and the activity of the free ion Zn2+ were equally reliable to evaluate zinc availability in the soil amended with flue dust. More than 70% of the total Zn present in the saturation extract was in the free ion form, and the remainder was mainly complexed to SO4(2-) and OH-, independent of soil pH. Flue dust is a zinc supplier to plants. All tested methods were efficient in evaluating Zn availability for corn, independently of soil pH.

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USE OF HYDROGEN PEROXIDE AND PERCARBONATE TO TREAT CHLORINATED AROMATIC HYDROCARBON-CONTAMINATED SOIL

Journal of Environmental Engineering and Landscape Management ◽

10.3846/16486897.2013.804827 ◽

2014 ◽

Vol 22 (1) ◽

pp. 30-39 ◽

Cited By ~ 20

Author(s):

Marika Viisimaa ◽

Anna Goi

Keyword(s):

Hydrogen Peroxide ◽

Soil Ph ◽

Liquid Hydrogen ◽

Natural Soil ◽

Contaminant Removal ◽

Contaminant Degradation ◽

Solid Carrier ◽

Liquid Carrier ◽

Initial Ph ◽

Ph Conditions

This study compared treatment methods that utilised a liquid carrier of hydrogen peroxide and a solid carrier, percarbonate, for p-dichlorobenzene, p-chloro-m-cresol and p-chlorothymol degradation in the soil. The targeted chlorinated aromatic contaminants in the soil degraded to a certain level when treated with the liquid hydrogen peroxide, but the removal efficacy was not dependent on the dosage. In contrast, an increase in the percarbonate dosage enhanced the contaminant removal. Supplementary ferrous iron was more effective for the treatment that employed the liquid carrier of hydrogen peroxide than the treatment employing the solid carrier. Although acidic pH conditions (initial pH of 2.5) favoured contaminant degradation using liquid hydrogen peroxide, the treatment involving percarbonate resulted in more effective contaminant removal without any soil pH preadjustment. Therefore, the solid carrier of hydrogen peroxide, percarbonate, was concluded to be an effective alternative to the liquid carrier, resulting in greater contaminant removal at natural soil pH values.

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Sicklepod (Cassia obtusifolia) Control in Soybean (Glycine max) Grown in Rotations of 97- and 18-cm Row Spacings

Weed Science ◽

10.1017/s0043174500072787 ◽

1989 ◽

Vol 37 (6) ◽

pp. 748-752 ◽

Cited By ~ 4

Author(s):

David R. Shaw ◽

Clyde A. Smith ◽

Charles E. Snipes

Keyword(s):

Glycine Max ◽

Soil Ph ◽

Control Program ◽

Control Measures ◽

Effective Control ◽

Row Spacing ◽

Split Application ◽

The Third ◽

Ph Conditions ◽

Narrow Row

Various 3-yr rotation sequences of 97- and 18-cm row spacings, with appropriate sicklepod control treatments within each row spacing, were implemented to evaluate sicklepod population and soybean yield at two locations. Alachlor plus metribuzin applied preemergence followed by either a postemergence-directed spray of metribuzin plus 2,4-DB or hand hoeing in 97-cm rows consistently reduced sicklepod populations. Reductions with 97-cm rows and preemergence-applied herbicides coupled with cultivation were not as great. At one location, using a split application of metribuzin preplant incorporated followed by preemergence with 18-cm rows reduced sicklepod populations if effective control measures had been used in wide rows the previous year, but the narrow-row treatments did not reduce sicklepod numbers if 18-cm rows had been used previously. Soil-applied metribuzin was more effective under high soil pH conditions, and sicklepod populations were reduced substantially whether the previous row spacing was 18 or 97 cm. After the third year, all plots were planted in 97-cm rows with no herbicides. No differences were found among sicklepod populations with any previous row spacing or sicklepod control program, indicating that, even with 3 yr of effective control, subsequent sicklepod populations were not affected.

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CORN RESPONSE AND SOIL NITROGEN TRANSFORMATIONS FOLLOWING VARIED APPLICATION OF POULTRY MANURE TREATED TO MINIMIZE ODOR

Canadian Journal of Soil Science ◽

10.4141/cjss75-005 ◽

1975 ◽

Vol 55 (1) ◽

pp. 29-34 ◽

Cited By ~ 2

Author(s):

K. A. MACMILLAN ◽

T. W. SCOTT ◽

T. W. BATEMAN

Keyword(s):

Soil Ph ◽

Dry Matter ◽

Poultry Manure ◽

Organic N ◽

Nitrogen Transformations ◽

Inorganic N ◽

N Source ◽

Soil Inorganic N ◽

Ph Conditions ◽

Soil Nitrogen Transformations

The response of corn (Zea mays L.) to manure that had been treated to minimize odor was investigated in a greenhouse trial with two silt loam soils of pH 4.2 and 7.1. Pretreatment of manure resulted in sources initially high in organic N and NH4+, but low in NO3−. One pretreatment gave high initial NO2− concentrations. In soil at pH 4.2, NH4+ was the major N source utilized by corn grown to 36 days, and dry matter yields were superior to those from soil at pH 7.1 where soluble NO3− was the major source of N. At pH 7.1, NO2− remained in significant quantities and decreased dry matter yields at 6 wk. Soil inorganic N concentrations varied between soils and was attributed to soil pH differences. Rate of NO2− disappearance decreased with increase in soil pH, and NH4+ accumulation increased with decrease in soil pH, whereas NO3+ production was favored by neutral pH conditions. Some NO3− production was observed in pH 4.2 soil after 36 days' incubation

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Increasing the Efficiency of Detailed Soil Resource Mapping on Transitional Volcanic Landforms Using a Geomorphometric Approach

Applied and Environmental Soil Science ◽

10.1155/2021/8867647 ◽

2021 ◽

Vol 2021 ◽

pp. 1-12

Author(s):

Ahmad Priyo Sambodo ◽

Tanwa Arpornthip

Keyword(s):

Developing Countries ◽

Soil Properties ◽

Soil Ph ◽

Land Use Planning ◽

Grid Method ◽

Soil Mapping ◽

Soil Resource ◽

Ph Conditions ◽

Regression Tests ◽

Geomorphometric Parameters

For developing countries, detailed soil resource data and maps are essential in land-use planning. Unfortunately, obtaining detailed soil data for mapping is expensive. Detailed soil studies and mapping in developing countries often use the grid method. In addition to being time-consuming, the grid method needs a lot of sample points and surveyors. Geomorphometry can be a less expensive alternative for detailed soil mapping. Geomorphometry uses computationally measured terrain characteristics to describe other hard-to-measure terrain and soil properties. In our study, landform arrangements and slopes were analyzed together to create a map of soil pH. Bompon watershed, Indonesia, was used as a case study. Soil mapping units with potentially similar soil pH were created based on a classification system of the two geomorphometric parameters. Soil samples were taken from each of the units. The samples' soil pH was measured and compared to the geomorphometric predicted result. Regression tests were performed to see the significance of geomorphometric parameters on soil pH conditions. Regression tests show that the results of p value of the four soil layers are 0.046, 0.019, 0.037, and 0.047, respectively, on a 5% confidence level. According to the test result, landform arrangements and slopes can indicate soil pH conditions in Bompon. Our estimate suggests that our geomorphometric method is cheaper than the grid method by a factor of seven. The ability to use geomorphometric parameters to describe other soil properties could enable a cheap and fast production of detailed soil maps for developing countries.

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Effects of liming on soil pH and manganese toxicity in a Goulburn valley pear orchard

Australian Journal of Experimental Agriculture ◽

10.1071/ea9720310 ◽

1972 ◽

Vol 12 (56) ◽

pp. 310 ◽

Cited By ~ 2

Author(s):

A Selimi ◽

RR Nickelson

Keyword(s):

Soil Ph ◽

Plant Tissue ◽

Acid Soil ◽

Soil Conditions ◽

Plant Tissues ◽

Mn Toxicity ◽

Fruit Skin ◽

Pear Orchard ◽

Ph Conditions ◽

Pear Trees

The effects of low soil pH and its correction by liming on the performance of Josephine de Malines and Packham's Triumph pear trees, under irrigation conditions, in the Goulburn Valley were studied for 14 years. Under low soil pH conditions, Mn, Fe, and Al became more available in the soil, but the only element to be found in toxic quantities in plant tissues was Mn. Under these acid conditions, Josephine de Malines pears grew and yielded poorly and exhibited Mn toxicity symptoms in the form of internal bark necrosis and coarse fruit skin russet. Packham's Triumph pear trees were not affected adversely by acid soil conditions. When low soil pH was corrected to the desired level by lime applications, the Mn became less available in soil, its concentration in the plant tissue was reduced, and Mn toxicity symptoms largely disappeared.

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Disease Development in Guar (Cyamopsis psoraloides DC.) and Gram (Cicer arietinum L.) Attacked with Sclerotium Rolfsii under Different Soil pH Conditions

Journal of Phytopathology ◽

10.1111/j.1439-0434.1968.tb02353.x ◽

1968 ◽

Vol 62 (4) ◽

pp. 319-322 ◽

Cited By ~ 1

Author(s):

S. B. Mathur ◽

S. Sinha

Keyword(s):

Cicer Arietinum ◽

Soil Ph ◽

Sclerotium Rolfsii ◽

Disease Development ◽

Cicer Arietinum L ◽

Ph Conditions

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Effects of Powdered Rice Chaff on Growth and Yield of Rice Under Different Soil pH Conditions

Communications in Soil Science and Plant Analysis ◽

10.1081/css-120037558 ◽

2004 ◽

Vol 35 (9-10) ◽

pp. 1469-1484 ◽

Cited By ~ 2

Author(s):

Akbar Hossain Khandaker ◽

Takatsugu Horiuchi ◽

Shuichi Miyagawa

Keyword(s):

Soil Ph ◽

Growth And Yield ◽

Ph Conditions

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Mitigation of nitrous oxide emissions from an acidic soil by valorization of industrial waste

10.5194/egusphere-egu21-14027 ◽

2021 ◽

Author(s):

Junhui Yin ◽

Rui Liu ◽

Qing Chen

Keyword(s):

Nitrous Oxide ◽

Soil Ph ◽

Industrial Waste ◽

Acidic Soil ◽

Industrial Wastes ◽

Nitrous Oxide Emissions ◽

Acidic Soils ◽

Untreated Soil ◽

Incubation Experiments ◽

Agriculture Sustainability

Increasing evidence suggests that alkaline mineral amendments from industrial wastes (e.g., phosphorus tailing, PT) have potential to ameliorate soil acidification and improve agriculture sustainability. However, the effects of such amendment on nitrous oxide (N2O) production remain elusive. To fill this knowledge gap, an incubation experiments were conducted with an acidic soil of pH 4.80 treated with i) control (CK, no amendments), ii) urea at 60 mg N kg-1 (U), iii) 10 g kg-1 amendments (S) and iv) 10 g kg-1 amendments plus urea at 60 mg N kg-1 (S+U). A 184-h experiment was conducted with a robotized incubation system for monitoring real-time gases (O2, N2O, N2, CO2) dynamics. Results from this batch experiment showed that the soil pH was significantly increased with the amendment addition (S and S+U) from 4.80 to above 6.00. Meanwhile, the mineralization, nitrification and denitrification processes were stimulated with the amendment addition. The N2O production was reduced by an average of 65.7% with the amendment addition compared to that without the amendment application. After incubation, higher N2 productions were observed from the soil with amendment addition (S and S+U) than untreated soil (P<0.05). The findings suggest that the N2O emissions from acidic soils can be considerably controlled by valorization of PT.

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