12 documents found, page 1 of 2
Assessing the Competitive Ability of Rhynchosia capitata; an Emerging Summer We...
Ali,H.H.; Tanveer,A.; Naeem,M.; Jamil,M.; Iqbal,M.; Chadhar,A.R.; Kashif,M.S.Rhynchosia capitata is a newly emerging threatening weed of summer crops in many Asian countries. We conducted 2-yr experiments to evaluate R. capitata competition with mungbean under irrigated conditions. Rhynchosia capitata was allowed to compete with mungbean for 0, 3, 4, 5, 6, 7 weeks after planting and for full crop season. The competitive ability of R. capitata was assessed by measuring its dry weight, mi...
Assessing the Potential of the Water Soluble Allelopaths of Marsilea minuta in ...
Tanveer,A.; Safdar,M.E.; Suleman,M.; Tahir,M.; Zamir,S.I.; Nadeem,M.A.To investigate the allelopathic effect of Marsilea minuta against the germination and seedling growths of rice (Oryza sativa) and wheat (Triticum aestivum), germination bioassays were conducted in both Petri dish and soil cultures in laboratory conditions. Rice and wheat seeds were allowed to germinate in a 1, 2, 3, 4, and 5% (w/v) aqueous extract of whole plant and 2, 4, 6, and 8% (w/w) plant residue-incorpora...
Comparative allelopathic potential of metabolites of two Alternanthera species ...
Mehmood,A.; Tanveer,A.; Nadeem,M.A.; Zahir,Z.A.A laboratory study was conducted to investigate the allelopathic effect of aqueous extracts of plant parts of Alternanthera philoxeroides and A. sessilis and soil incorporated residues on germination and seedling growth of rice (Oryza sativa). Aqueous extracts prepared from different plant parts of Alternanthera species delayed rice germination. Alternanthera philoxeroides and A. sessilis inhibited rice germina...
Germination ecology of wild onion: a rainfed crop weed
Tanveer,A.; Sibtain,M.; Javaid,M.M.; Ali,H.H.Asphodelus tenuifolius is becoming a more common weed in rain-fed area in Pakistan. Laboratory and greenhouse experiments were conducted to determine the effect of different environmental factors on germination and emergence of A.tenuifolius. Results showed that A.tenuifolius can tolerate a wide range of varying environmental factors. Greatest percentage of germination (80%) was recorded at 15 ºC constant tempe...
Allelopathic action of parthenium and its rhizospheric soil on maize as influen...
Safdar,M.E.; Tanveer,A.; Khaliq,A.; Naeem,M.S.Biosynthesis and subsequent release of allelochemicals by a plant into the environment is supposed to be influenced by its growing conditions. To ascertain what will be the allelopathic action of plant parts and rhizospheric soils of parthenium (Parthenium hysterophorus) growing at various farm locations with varied growing conditions, germination and seedling growth of maize hybrid (DK 6142) were assayed by so...
Weed management boosts yield in fine rice under system of rice intensification
Chadhar,A.R.; Nadeem,M.A.; Tanveer,A.; Yaseen,M.The system of rice intensification has emerged as a promising rice production package but weed infestation could lead to incomplete benefits from the system. A two-year field study was performed to determine an appropriate method of weed management in SRI. Weed management treatments were manual hoeing 20, 40 and 60 days after transplanting (DAT), hoeing with rotary hoe at 20, 40 and 60 DAT, hoeing with rotary h...
Dormancy studies on Euphorbia dracunculoides and Astragalus spp.: major weeds o...
Ikram,R.M.; Tanveer,A.; Ata,Z.; Saqib,M.The aim of this study was to examine the dormancy behavior of Euphorbia dracunculoides and Astragalus spp., weeds of arid chickpea. The dormancy breaking treatments were: Gibberalic acid (GA3) and Thiourea each at 50, 100, 150, 200, 250, and 300 ppm and Potassium nitrate (KNO3) at 5,000, 10,000, 15,000, 20,000, 25,000, and 30,000 ppm (24 h soaking). Germination (G) percentage and germination energy (GE) of E. d...
Germination ecology of Rhynchosia capitata: an emerging summer weed in Asia
Ali,H.H.; Tanveer,A.; Nadeem,M.A.; Asghar,H.N.; Javaid,M.M.Rhynchosia capitata is becoming an increasing problem in summer crops, such as cotton, soybean, pearl millet and mungbean in many Asian countries. Laboratory and greenhouse studies have been conducted to determine the effects of several environmental factors on seed germination patterns and seedling emergence of R. capitata. We investigated whether the diverse ecological factors such as temperature, light, sali...
Allelopathic effects of Rhynchosia capitata on germination and seedling growth ...
Ali,H.H.; Tanveer,A.; Nadeem,M.A.; Javaid,M.M.; Kashif,M.S.; Chadhar,A.R.Experiments were conducted to evaluate the allelopathic influence of Rhynchosia capitata on germination and seedling growth of mungbean (Vigna radiate) along with identification of the phytotoxic substances responsible for this activity. Water extracts of root, shoot, leaf, fruit and whole plant were prepared by soaking them in water in a ratio of 1:20 (w/v) for 24 h. All the extracts affected germination and s...
Effect of ecological factors on germination of horse purslane (Trianthema portu...
Tanveer,A.; Mumtaz,K.; Javaid,M.M.; Chaudhry,M.N.; Balal,R.M.; Khaliq,A.Trianthema portulacastrum is a very problematic summer crop weed and a complete crop failure has been observed because of this weed at high density. The effect of different ecological factors on germination of T. portulacastrum seeds collected in two different years (2009 and 2005) was studied in laboratory experiments. An increase in temperature from 25 to 35 ºC increased germination percentage of T. portulaca...