Abstract:
Wheat, Triticum aestivum L. is one of the most important food crops which are playing a key role in economic affairs of the World. Biotic stresses such as weeds, viruses and pests are among factors which cause reduction in plant’s productivity. Plants have to evolve strategies to survive from biotic stresses because they cannot escape from stress by moving to places that are more favorable. The present research work was conducted to evaluate the effect of a weed leaf extract and pesticide on wheat and three weed species (Convolvulus arvensis L., Asphodelus tenuifolius and Chenopodium album). Aqueous extract was prepared and treatments were applied at regular intervals. The experiment was planned in completely randomized design (CRD) with two factors (weed species and concentration levels) with three replicates. Morphological and anatomical parameters that were selected to study the effect of weed leaf extract and pesticide treatment have shown that wheat has exhibited positive effect under weed leaf extract treatment. An increase in root length shoot length, leaf area and no. of leaves has been observed in wheat. Plant has showed better growth at 100% concentration of weed leaf extract treatment. Root area and shoot area has also been increased. While root length, shoot length, leaf area and no. of leaves has been decreased in all the three weeds. Moreover, anatomical attributes of the weeds were also affected by weed leaf extract treatment and pesticide. An increase in epidermis thickness and cortical cell area has been observed in root of all the three weeds. Increase in phloem thickness and decrease in metaxylem vessel area has been observed in the stem of Chenopodium album and Convolvulus arvesis. Decrease in stomatal density has been observed in leaf of Asphodelus tenuifolius and Convolvulus arvesis. Generally, weed leaf extract treatment exhibited a negative influence on the morphological characters of weeds and this negative influence increased with an increase in concentration of weed leaf extract. At 100% concentration of weed leaf extract treatment this inhibitory effect became almost parallel to that effect caused by pesticide. Most significant negative impact has been observed in Chenopodium stem and leaf parameters at 100% concentration of weed leaf extract treatment. So, we can say that weed leaf extract can be used to control weeds in wheat fields and this method of eradicating weeds is economical and pollution free.
Page(s):
130-130
DOI:
DOI not available
Published:
Journal: Abstract Book on Global Science Technology and Management Conference, Volume: 0, Issue: 0, Year: 2023