Sampling, Handling, and Analyzing Plant Tissue Samples

Jones, J. Benton; Case, Vernon W.

doi:10.2136/sssabookser3.3ed.c15

Cited by 428 publications

(238 citation statements)

References 99 publications

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“…The harvest index (H.I) was computed using the formula, HI = (Grain yield/Biological yield) × 100. Grain protein contents were determined by Kjeldahl digestion method while the Fe and Zn contents in the grain samples were determined by following the protocols of Jones and Case [28]. Post-harvest analysis of soil from plots of each treatment was also carried out using above mentioned protocols.…”

Section: Data Collectionmentioning

confidence: 99%

Unveiling the Efficiency of Vermicompost Derived from Different Biowastes on Wheat (Triticum aestivum L.) Plant Growth and Soil Health

et al. 2019

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The present study was conducted to explore the role of different types of vermicomposts (VCs) prepared from different substrates to improve soil health (physical and chemical properties) and wheat plant growth under field conditions. Different combinations of vermicompost prepared from different substrates (cow dung, paper waste, and rice straw) and inorganic fertilizers were applied in soil using wheat as a test plant. The impact of three different VCs on physico-chemical characteristics and nutrient availability in soil was evaluated to examine their efficacy in combination with chemical fertilizers. Temporal trends in vermicomposting treatments at various stages showed significant improvement in physico-chemical attributes of the VCs substrates. All the plant physiological attributes showed significant response where N:P:K 100:50:50 kg ha −1 + 10 t ha −1 cow dung vermicompost was applied. In addition, post-harvest analysis of soil not only revealed that different combinations of the vermicomposting treatments improved the soil health by improving the physico-chemical attributes of the soil. Conclusively, application of cow dung vermicompost along with recommended NPK not only improved crop yield, soil health, reduced insect (aphid) infestation but also fortified grains with Zn and Fe. Funding acquisition, Z.A., S.B. and M.M.; Investigation, Z.A. and W.H.; Methodology, N.A., N.K.N. and M.I.K.; Resources, M.M.; Supervision, K.B. and Z.C.; Validation, N.A. and N.K.N.; Writing-original draft, S.B.; Writing-review & editing, K.B., Z.C. and M.M.

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Section: Data Collectionmentioning

confidence: 99%

Unveiling the Efficiency of Vermicompost Derived from Different Biowastes on Wheat (Triticum aestivum L.) Plant Growth and Soil Health

et al. 2019

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“…The iron, zinc, copper, and aluminum content of the samples were determined, using the method described by Jones, Benton, and Vernon (1990). The samples were ashed at 550°C.…”

Section: Analysis Of Heavy Metal Contaminationmentioning

confidence: 99%

Assessment of heavy metals and microbial contamination of gari from Liberia

Awoyale

Asiedu

Kawalawu

et al. 2017

Food Science & Nutrition

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Cassava is a staple mostly eaten in the form of gari, after rice in Liberia. The local method of gari processing often leads to product contamination, thus, a study was done to assess the heavy metals and microbial contamination of gari in eight counties of the country. A total of sixty‐one gari samples were collected and packaged in an airtight polyethylene bag for analyses, using standard methods. Results depict that the mean of the heavy metals in the gari samples is iron (Fe) 43.87 ppm, copper (Cu) 0.94 ppm, zinc (Zn) 5.49 ppm and aluminum (Al) 257.45 ppm. Yellow gari had the highest Fe (64.90 ppm), Cu (1.25 ppm) and Zn (7.85 ppm) content, but with the least Al content (87.15 ppm). The Fe content was lower in groundnut‐fortified gari (42.93 ppm), and the Cu (0.70 ppm) and Zn (3.50 ppm) content were lower in groundnut‐moringa‐fortified gari. The samples and counties have no significant statistical effect (p > .05) on the heavy metals composition of the products. No microbial growth was observed in groundnut‐fortified and groundnut‐moringa‐fortified gari but with coconut‐fortified gari having the highest total fungi count of 800 CFU/g. The major fungi identified in the gari samples are Penicillium and Aspergillus spps., but with their counts within the regulated level. Therefore, the gari consumed in Liberia are safe except for the high Fe and Al content, which needs to be addressed with the use of unpainted stainless steel materials as food contact surfaces.

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“…One gram of grain sample was placed in muffle furnace at 550°C for complete oxidation of organic matter until the appearance of gray white ash (AOAC, 2003). Ground subsamples, one gram each, weight were digested in a di-acid mixture (HNO3:HClO4 ratio of 2:1) for metal analysis (Jones and Case, 1990). Iron, Zn and Mn concentrations in the digest were measured by atomic absorption spectrophotometer (PerkinElmer, AAnalyst 100, Waltham, USA).…”

Section: Field Preparation and Soil Propertiesmentioning

confidence: 99%