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Questions related from Huma Qureshi
What are parameters/criteria scientists use to nominate a species as invasive in area? According to definition they are mostly non-native, fast growing species with potential harm to...
06 May 2021 290 1 View
What software are more advance and accurate for biodiversity indices calculations now a days in Plant sciences?
22 March 2017 3,197 2 View
Invasive vs pervasive?
17 November 2016 8,516 6 View
Except for radish, there are various pre-soaking hours for different seeds to be used in germination and early seedling bio assays in the laboratory. For lettuce, I read 4hr as optimum pre-soaking...
08 April 2015 3,970 4 View
Nowadays, allelopathy is topic of interest for weed control. Scientists are isolating the natural phytotoxins/allelochemicals for weed control. How one can justify that isolated allelochemicals...
25 March 2015 399 8 View
All papers report use of mercuric chloride (0.5%) for seed surface sterilization in germination and seedling growth bio-assays, what is reason of use of this compound while there are also many...
24 February 2015 1,634 23 View
Botanists usually collect different plant parts, dry it and convert that into powder form for the extraction in different solvents. Why is intact fresh material not used for extractions?
16 February 2015 2,698 16 View
I have tested different organic fractions of crude methanol extract of Parthenium hysterophorus leaves. Ethyl acetate fraction showed highest toxic activity. Now I would like to find out the most...
16 January 2015 7,609 3 View
Phlaris minor is world known weed of Triticum aestivum while less common in other fields. Similarly other crops have their own weeds. What makes these weeds crop specific? Moreover why most of...
08 January 2015 4,411 18 View
If some one wants to check certain activity, say for example antimicrobial, for 4 or 5 different plants with aim to perform chemical characterization for plant showing highest activity, is this...
05 January 2015 7,527 12 View
Which one of the two relations is more appropriate for the calculation of importance value index for a species? IVI= Relative density + Relative frequency + Relative cover (Reference: ECOLOGICAL...
30 December 2014 5,213 15 View
Plant material is normally extracted after shade drying and grinding. Pulverized material is then extracted through different techniques like cold maceration or through soxhlet apparatus. If...
29 December 2014 746 9 View
As most of the open access journals charge a fee to the authors to make their work accessible. These charges are even not affordable in certain cases. Are there any options available e.g.,...
01 January 1970 2,802 16 View
