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Articles by Rukhsana BAJWA
Total Records ( 8 ) for Rukhsana BAJWA
  Rukhsana Bajwa , Bushra Haneef and Arshad Javaid
  Aqueous leaf extract of Syzygium cumini (L.) Skeels significantly reduced the root and shoot growth, pod yield and up of nitrogen and phosphorus in chickpea (Cicer arietinum L.). Effective Micro-organisms (EM) application provided sufficient relief to chickpea against allelopathic stress due to aqueous leaf extract. Consequently the root and shoot growth, pod and shoot nitrogen content of EM inoculated plants were significantly enhanced as compared to non-inoculated plants However, adverse impact of extract on shoot phosphorus content remained unchanged by EM application.
  Iffat Siddiqi , Arshad Javaid and Rukhsana Bajwa
  Sewage irrigation enhanced nodulation but adversely affected VA mycorrhizal colonization in pea (Pisum sativum L.). Effect of sewage irrigation on root and shoot growth and pod yield was insignificant.
  Bushra Afzal , Rukhsana Bajwa and Arshad Javaid
  Tolerance of Vigna radiate (L.) Wilczek and Phaseolus vulgaris L. to allelopathic stress caused by aqueous shoot extract of Imperata cylindrica was studied. Both the test species were found to be susceptible to the aqueous extract. Root and shoot growth, yield, nodulation and VA mycorrhizal colonization in both the test species were significantly reduced under the allelopathic stress.
  Rukhsana Bajwa , Arshad Javaid and Nusrat Rabbani
  A pot experiment was conducted to observe the effect of effective microorganisms (EM) on vesicular arbuscular mycorrhizal (VAM) colonization, nodulation and crop growth in Trifolium alexandrianum L., in soils amended with farmyard manure (FYM) and green manure (GM). EM significantly enhanced mycorrhizal colonization in 60-day old plants in both types of soil. EM failed to induce any remarkable change in nodulation at this growth stage while it exhibited an inhibitory effect on root and shoot biomass production. After 80 days growth, EM treated plants exhibited no significant variation in mycorrhizal colonization than non-treated plants. EM application caused a significant reduction in nodule number while increased the size and biomass of nodules in both types of soils. EM application supported root growth in FYM amended soil, however, shoot growth was adversely affected at this growth stage. In GM amended soil EM inhibited both the root and shoot growth. EM failed to induce any relationship between VAM colonization, nodulation and plant growth.
  Rukhsana Bajwa , Bushra Afzal and Arshad Javaid
  Under allelopathic stress of Imperata cylindrica two VAM species viz. Glomus mosseae and G. fasciculatum enhanced shoot growth of wheat (Triticum aestivum L.) at 75 days growth stage. Response of shoot length to VAM was different with different VAM species. Maximum increase in shoot length was recorded in co-inoculated plants followed by G. fasciculatum and G. mosseae inoculation respectively. The response of shoot biomass was similar to both VAM species. Root fresh weight was reduced by VAM inoculation at this growth stage. Adverse effect was significant in G. mosseae and co-inoculated plants. However, root dry weight showed an insignificant response to either species of VAM. At 105 days growth stage response of root, shoot and spike growth to either VAM species was insignificant.
  Arshad Javaid , Samina Ashraf and Rukhsana Bajwa
  Shoot growth and pod yield was decreased while root growth was stimulated when Vigna radiata (L.) Wilczek was grown in Tannery Effluent Contaminated Soil (TECS). Nodulation in V. radiata was also adversely affected in TECS. In maize (Zea mays L.) root length was increased significantly while shoot length and root/shoot biomass were non significantly affected in TECS. VA mycorrhizal colonization was suppressed in TECS in both the test species. Arbuscular infection was severely arrested in TECS.
  Rukhsana Bajwa , Afia Khalid and Tabinda Shahid Cheema
  The use of allelopathic plant extracts as biological control agents is being popularized in recent years. The present research work was designed to evaluate the potential of aqueous extracts of allelopathic weed, Parthenium hysterophorus, against three pathogenic fungi viz. Drechslera tetramera, Aspergillus niger and Phoma glomerata. The test fungal species were grown in 100 ml liquid malt extract medium containing 20 ml of each of 0, 10, 20, 30, 50, 60 and 70% w/v shoot extract of Parthenium hysterophorus. Fungal growth was monitored periodically after 5, 10 and 15 days of incubation. A highly contrasting response was exhibited by the test pathogens to employed extract treatments. The lower concentrations of 10, 20 and 30% extract exhibited antifungal activity resulting in a pronounced decrease in fungal biomass production. The response to extract was species-specific. D. tetramera was the most susceptible while P. glomerata was found to be least susceptible to the applied aqueous extracts. The higher concentrations of 50, 60 and 70% extract markedly enhanced the fungal biomass production at all the harvest intervals.
  Arshad JAVAID and Rukhsana BAJWA
  Effective microorganisms (EM) is a commercial biofertilizer that contains a mixture of co-existing beneficial microorganisms collected from natural environments. Predominantly it consists of species of photosynthetic and lactic acid bacteria, yeast, and actinomycetes. The present study was conducted to evaluate the effect of EM application on growth, nodulation, yield, and nutrient uptake in mung bean [Vigna radiata (L.) Wilczek] var. NIAB Mung 98 under field conditions. Field soil was amended with farmyard manure at 20 t ha-1, Trifolium alexandrinum green manure at 20 t ha-1, and recommended (NPK) and half (1/2 NPK) doses of chemical fertilizers. EM was applied in the form of a dilute solution in water (1:1000) at fortnight intervals throughout the experiment. EM application significantly enhanced shoot biomass in farmyard manure, 1/2 NPK and NPK amendments. Similarly, EM significantly increased grain yield by 24% and 46% in farmyard manure and NPK fertilizers amendments, respectively. By contrast, in green manure amendment, EM application resulted in a significant decline of 23% in grain yield. In 1/2 NPK amendment, the effect of EM application on grain yield was insignificant. Nodulation in terms of number and biomass of nodules was significantly suppressed by EM application in farmyard manure and green manure amendments. In NPK amendment, a significant increase in nodule biomass was recorded due to EM application. EM significantly enhanced nitrogen, phosphorus and potassium nutrition of the test plant in farmyard manure amendment both at flowering stage and maturity. However, in NPK amended soil, EM application markedly enhanced plant nutrition at later growth stage only.
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