scholarly journals Fly Ash and Composted Biosolids as a Source of Fe for Hybrid Poplar: A Greenhouse Study

2011 ◽  
Vol 2011 ◽  
pp. 1-11 ◽  
Author(s):  
Kevin Lombard ◽  
Mick O'Neill ◽  
April Ulery ◽  
John Mexal ◽  
Blake Onken ◽  
...  
Keyword(s):  
Heavy Metals ◽  
New Mexico ◽  
Fly Ash ◽  
Crop Yields ◽  
Sandy Loam ◽  
Hybrid Poplar ◽  
Treated Soil ◽  
Greenhouse Study ◽  
Loam Soil ◽  
Urea Ammonium Nitrate

Soils of northwest New Mexico have an elevated pH and CaCO3content that reduces Fe solubility, causes chlorosis, and reduces crop yields. Could biosolids and fly ash, enriched with Fe, provide safe alternatives to expensive Fe EDDHA (sodium ferric ethylenediamine di-(o-hydroxyphenyl-acetate)) fertilizers applied toPopulushybrid plots? Hybrid OP-367 was cultivated on a Doak sandy loam soil amended with composted biosolids or fly ash at three agricultural rates. Fly ash and Fe EDDHA treatments received urea ammonium nitrate (UAN), biosolids, enriched with N, did not. Both amendments improved soil and plant Fe. Heavy metals were below EPA regulations, but high B levels were noted in leaves of trees treated at the highest fly ash rate. pH increased in fly ash soil while salinity increased in biosolids-treated soil. Chlorosis rankings improved in poplars amended with both byproducts, although composted biosolids offered the most potential at improving Fe/tree growth cheaply without the need for synthetic inputs.

Field studies on leaching behaviour of a highly saline-sodic soil under two modes of water application in the presence of crops

1981 ◽  
Vol 97 (2) ◽  
pp. 383-389 ◽  
Author(s):  
I. S. Dahiya ◽  
R. S. Malik ◽  
Maharaj Singh
Keyword(s):  
Empirical Equation ◽  
Crop Yields ◽  
Sandy Loam ◽  
Field Studies ◽  
Growth Stages ◽  
Water Application ◽  
Loam Soil ◽  
Leaching Behaviour ◽  
Leaching Efficiency ◽  
Different Growth Stages

SummaryThe leaching behaviour of a highly saline-sodic, moderately permeable, sandy-loam soil was evaluated under continuous and intermittent submergence conditions in a longterm field study in the presence of rice and subsequent wheat and sesbania crops. Leaching curves with respect to both desalinization and desodification showed that leaching efficiency was considerably higher with intermittent than with continuous submergence. The curves were useful in determining the amount of leaching water needed for a given mode of water application to reduce harmful levels of salinity and sodicity to acceptable ones. Empirical equations were determined to fit the experimental data. Their comparison with another empirical equation from published bare-field data of this site showed that leaching efficiency under crops was higher than under fallow. From the desodification leaching curve, it is concluded that in reclamation of these soils there is no need of the application of any amendment like gypsum. The soil salinity and sodicity data recorded at different growth stages and crop yields showed that leaching during the rice growing season, under intermittent submergence without previous leaching, decreased salinity and sodicity throughout the top 100 cm of the soil to levels safe for the successful cultivation of rice and subsequently the relatively deep-rooted crops of wheat and sesbania.

scholarly journals Application of Two Microbial Teas Did Not Affect Collard or Spinach Yield

HortScience ◽  
2009 ◽  
Vol 44 (1) ◽  
pp. 73-78 ◽  
Author(s):  
Sharon J.B. Knewtson ◽  
Jason J. Griffin ◽  
Edward E. Carey
Keyword(s):  
Crop Yields ◽  
Spinacia Oleracea ◽  
Sandy Loam ◽  
Soil Microbial Activity ◽  
Vegetable Crops ◽  
Soil Microbial ◽  
Nutrient Additions ◽  
Fertility Treatments ◽  
Loam Soil ◽  
Collard Green

Microbial tea from a commercial source and a homemade manure tea were evaluated for 2 years under organic and conventional fertility regimens. Testing with different fertility regimens allowed broader assessment of tea efficacy. Collard green (Brassica oleracea L. var. acephala cv. Top Bunch) yield and soil microbial activity were measured after microbial tea applications were made in three fertility treatments (conventional, organic, or no fertilizer amendment) on a previously unfertilized sandy loam soil. Spinach (Spinacia oleracea L. cv. Hellcat) and collard green yields were determined after commercial microbial tea application to a silt loam soil previously managed with organic or conventional vegetable crops in open fields and under high tunnels. Results indicated that nutrient additions influenced crop yields, even doubling yield. This demonstrated that improved nutrient availability would affect yield at the chosen locations. However, microbial tea applications did not affect crop yield. These results did not support the hypothesis that microbial tea improves plant nutrient uptake. Additionally, soil microbial respiration and biomass were unaffected after two or three tea applications.

Effect of application timing on pyrithiobac persistence

Weed Science ◽  
1997 ◽  
Vol 45 (1) ◽  
pp. 179-182 ◽  
Author(s):  
Eric P. Webster ◽  
David R. Shaw
Keyword(s):  
Half Life ◽  
Sandy Loam ◽  
Analysis Of Covariance ◽  
Field Analysis ◽  
Silty Clay ◽  
Soil Slope ◽  
Application Timing ◽  
Initial Concentration ◽  
Greenhouse Study ◽  
Loam Soil

Experiments were conducted in 1993 and 1994 to determine persistence of pyrithiobac as determined by bioavailability following different application times in a silty clay. Pyrithiobac was applied at PPI, PRE, pinhead square (PHS), and first bloom (FB) application timings. Greenhouse studies were also conducted in 1993 and 1994 to determine pyrithiobac persistence under controlled conditions on a sandy loam soil. Slope comparison indicated no difference in degradation patterns in the field for any application timing of pyrithiobac within years; thus, application timings were combined for 1993 and 1994. Slope comparison also indicated no difference in slope between 1993 and 1994; thus, years were combined to determine pyrithiobac persistence. The initial concentration was 30 ηg g−1. The half-life of pyrithiobac was 62 d in the field. Analysis of covariance indicated no difference in slope for the 1993 and 1994 greenhouse studies, and years were combined to determine the half-life. The initial concentration was 43 η g−1. The half-life was 43 d in the greenhouse study.

Heavy Metals Accumulation in Cauliflower (Brassica Oleracea L. var. Botrytis) Grown in Brewery Sludge Amended Sandy Loam Soil

2014 ◽  
Vol 2 (3) ◽  
pp. 87 ◽  
Author(s):  
Babu Ram Khanal ◽  
Shree Chandra Shah ◽  
Shrawan Kumar Sah ◽  
Chandeshwor Prasad Shriwastav ◽  
Bharat Sharma Acharya
Keyword(s):  
Heavy Metals ◽  
Brassica Oleracea ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Heavy Metals Accumulation ◽  
Loam Soil ◽  
Metals Accumulation ◽  
Brassica Oleracea L

Accumulation of Heavy Metals by Chickpea Grown in Fly Ash Treated Soil: Effect on Antioxidants

2010 ◽  
Vol 38 (12) ◽  
pp. 1116-1123 ◽  
Author(s):  
Vimal Chandra Pandey ◽  
Jay Shankar Singh ◽  
Akhilesh Kumar ◽  
D. D. Tewari
Keyword(s):  
Heavy Metals ◽  
Fly Ash ◽  
Treated Soil

scholarly journals Effect of fly ash and bagasse charcoal on the mobility of atrazine in Indian sandy loam soil

2015 ◽  
Vol 1 (1) ◽  
pp. 1081128 ◽  
Author(s):  
Khushbu Sharma ◽  
Rajendra Kumar Sharma ◽  
Ashok Kumar Maurya ◽  
Peter Edward Joseph
Keyword(s):  
Fly Ash ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Loam Soil

scholarly journals Phytoremediation of Quizlofop-Ethyl Contaminated Soil Using Sesbania sesabn L

2015 ◽  
Vol 44 ◽  
pp. 59-63
Author(s):  
T. Mahakavi ◽  
L. Baskaran ◽  
R. Bakiyaraj ◽  
Ravi Mycin
Keyword(s):  
Gas Chromatography ◽  
Field Experiments ◽  
Sandy Loam ◽  
Germination Percentage ◽  
Morphological Parameters ◽  
Treated Soil ◽  
Treated Plant ◽  
Loam Soil ◽  
Herbicide Concentration ◽  
Quizalofop Ethyl

In this field experiments, sandy loam soil was treated with different concentration of herbicide (Quizalofop-ethyl) 0.5, 1.0, 1.5 and 2 per cent. Sesbaniasesban L. seeds were sown in all treated soil. The germination percentage, morphological and enzymes activities were measured after 20, 40 and 120 days. The results indicate that the germination per cent, morphological parameters were increased in control then it was gradually decreased with increasing the herbicide concentration. The enzymes like catalase and peroxidase activity were increased in control then it was decreased with increasing the concentration. Whereas the polyphenoloxidase acticity was lower in control and it was increased with increasing the herbicides concentration. Hence, after 120 days plants were harvested and the plant powder was analyzed for absorption of herbicide by plant with the help of Gas chromatography mass spectrum (GCMS). The obtained data showed that herbicide absorption was concerned in quiazalofop-ethyl treated plant when compared to control. This study expose that herbicide reduced by Sesbaniasesban L.

Comparative Efficacy of Leguminous Intercrops and Weed Management Practices on Nutrient Uptake, Productivity and Profitability of Maize based Intercropping System

2021 ◽  
Author(s):  
Manjanagouda S. Sannagoudar ◽  
K.N. Kalyana Murthy ◽  
Avijit Ghosh ◽  
Amit K. Singh ◽  
Gaurendra Gupta ◽  
...  
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
Crop Yields ◽  
Sandy Loam ◽  
Labour Force ◽  
Block Design ◽  
Nutrients Uptake ◽  
Stover Yield ◽  
Loam Soil ◽  
Leguminous Crops

Background: Presently, labour force is diminishing and becoming costlier. In agriculture management of weeds in cropped field has become a real challenge to the farmers, since weeds are affecting the crop yields due to competition for growth resources. Intercropping of leguminous crops and application of pre-emergence herbicides offers an ample scope for weed control. Methods: The present study was conducted at University of Agricultural Sciences, Bengaluru during 2016 and 2017 on red sandy loam soil and the experiment was laid out in randomized complete block design (RCBD) with factorial concept and replicated thrice. There were 15 treatment combinations involving three intercrops and five weed management treatments. Result: The results revealed that intercropping of maize with cowpea has recorded significantly higher grain yield (5842 kg/ha), stover yield (7035 kg/ha) and total nutrients uptake (99.53, 27.37, 96.95 kg/ha NPK, respectively). Among the chemical weed management practices, pre-emergence application of pendimethalin 30% EC @ 1.50 kg a.i./ha has recorded significantly higher grain (6589 kg/ha), stover yield (8033 kg/ha), maize equivalent yield (8860 kg/ha), total nutrients uptake (112.81, 31.05, 109.88 kg/ha NPK, respectively) and B:C ratio (3.35) compared to other weed management practices.

Leaching Characteristics of Industrial Metal Finishing Wastewater Treatment Plant Solids

1982 ◽  
Vol 14 (6-7) ◽  
pp. 715-726
Author(s):  
T H Goodgame ◽  
P W Barnett
Keyword(s):  
Heavy Metals ◽  
Sandy Loam ◽  
Full Range ◽  
Treatment Plant ◽  
Time Frame ◽  
Organic Coating ◽  
Industrial Wastes ◽  
Metal Finishing ◽  
Leaching Characteristics ◽  
Loam Soil

The safe disposal of industrial wastes is an international problem of increasing magnitude. There are very limited disposal sites for wastes which are hazardous in nature. The purpose of this study was to determine the leaching characteristics of solids resulting from the treatment for discharge of wastewaters produced by typical large metal finishing facilities. Samples were chosen so that the full range of both manufacturing processes and products produced were covered. The primary processes which contributed to the wastewater for treatment were “phosphating” in preparation for organic coating and “pickling” in preparation for application of porcelain enamel. These samples, along with a sandy loam soil as a control, were placed in lysi-meters. Distilled water was used as the leaching liquid, as being most representative of landfill conditions. Liquid was passed through the samples at the rate of one liter per week. Based upon the area of the lysimeter this rate was equivalent to a percolation rate of 510 cm per year. Leachate samples were analyzed for twenty-two different parameters: pH, TSS, COD, alkalinity, chloride, nitrate, phosphate, sulfate. Al, B, Ca, Cd, Cr, Cu, Fe, Mg, Mn, Na, Ni, Pb, Ti and Zn. The results of these tests indicate that the WWTP solids act very similarly to the soil used as a control. The leachate concentrations of heavy metals and the depletion of the heavy metals were such that this material would create no problems if disposed in an ordinary landfill – indicating that it is neither toxic nor hazardous. The time frame of this experiment was equivalent to ten years exposure in an ordinary landfill, and to a much longer period if deposited in a sanitary landfill.

Sign in / Sign up

Export Citation Format

Share Document