The flame-photometric determination of calcium in solutions of high sodium content

Blake, W. E.; Bryant, M. W. R.; Waters, Anne

doi:10.1039/an9699400049

Cited by 5 publications

(1 citation statement)

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“…The prepared powder was digested by following the procedure described by Loska and Wiechula (1975). Sodium and potassium contents of leaves were determined on flame photometer (Jenway PFP7) following the methodology as described by Blake et al (1969). Nitrogen contents were estimated by using micro-kjeldhals according to the methodology described by Bremmer and Keeney (1965).…”

Section: Determination Of Chemical Contents Of Leaves Of Selected Plamentioning

confidence: 99%

Host-plant-preference and Mortality Analysis of Phenacoccus solenopsis in Association with Biochemical Traits of Different Plant Species

Shahid¹,

Arif²,

Gogi³

et al. 2017

IJAB

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Dietary requirement and fitness of phytophagous insect pest depend upon the nutrient chemistry of host plant. The present research was carried out to investigate the association of host-plant-preference and mortality of Phenacoccus solenopsis first instar influenced by chemical characteristics of plant species. The experiment was carried out at (25 + 5ºC and 60 + 5% RH) in Integrated Pest Management Laboratory, University of Agriculture, Faisalabad, Pakistan during 2012. First instar exhibited maximum (attractiveness index = 0.75) toward Gossypium hirsutum followed by Trianthema portulacastrum (0.34) as compared Hibiscus rosa-chinensis (1.00) kept as standard. Mortality percentage of 1 st instar of CMB among 25 tested plant species ranged from 10% in cotton to 80% in Conyza bonariensis. Cluster analysis for biochemical traits showed that cluster-1 comprised of Lantana camara, H. rosa-sinensis, Helianthus annuus, Parthenium hysterophorus, Withania somnifera, Euphorbia prostrate, Portulaca oleracea, Solamum melongena, T. portulacastrum, G. hirsutum, Abelmoschus esculentus andCapsicum frutescens that had maximum attractiveness and less mortality. Cluster-2 Convolvulus arvensis, Eclipta prostrate, Amaranthus spinosus, Clerodendron inerme and Tribulus terrestris had medium whereas cluster-3 Launea nudicaulis, Chinopodium morale, C. album, Achyranthes aspera, C. bonariensis and Digera arvensis least attractiveness index but highest mortality. Principal component analysis (PCA) depicted that first three PCs expressed 83% of the total variability. Mortality of pest was negatively correlated with nitrogen and but positively with potassium, phosphorus, sodium, reducing sugar and total sugar. In conclusion, chemical contents affected attractiveness index and mortality of P. solenopsis; however there is need to explore allelochemicals imparting resistance against P. solenopsis.

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Section: Determination Of Chemical Contents Of Leaves Of Selected Plamentioning

confidence: 99%