Control of Sugarcane Pyrilla and Whitefly by Aerial Application of Emulsifiable Concentrates at Ultra-Low-Volume     

Fariduddin Ahmad  Zafarullah Khan Tariq  Heshamul Huque 《国际虫害防治杂志》2013,59(1):165-171

Abstract

Large scale field trials were undertaken with emulsifiable concentrates of different organophosphorus insecticides to control Pyrilla and whitefly, two serious pests of the sugarcane crop in the Peshawar Division of West Pakistan. All emulsifiable concentrates excepting Dimecron were applied in concentrate form without diluting with water. Of the seven insecticides tested against Pyrilla adults and nymphs, Dimecron, Lebaycid, Nexion (Bromophos) and Malathion gave superior control. In the case of whitefly, Dimecron, Lebaycid and Malathion gave almost equal mortality of adults and 3rd instar nymphs when applied at 8, 8 and 17 oz a.i./ac respectively, but much higher dosages would be required to get satisfactory control of the 4th instar nymphs. The cost of operations for the ultra-low-volume technique (excluding cost of insecticide) was 66% less than for the conventional method.  相似文献   

Optimization of polymerization conditions and thermal degradation of conducting polypyrrole coated polyester fabrics     

Tariq Mehmood  Akif Kaynak  Abida Mahmood  Abbas Kouzani 《Fibers and Polymers》2012,13(2):153-158

PET fabric is coated with conducting polypyrrole (PPy) by oxidative polymerization from an aqueous solution of Py using ferric chloride hexahydrate (FeCl₃) as oxidant and p-toluene sulphonate (pTSA) as dopant. The optimum concentrations for Py, FeCl₃ and pTSA were found to be 0.11, 0.857 and 0.077 mol/l respectively, which yielded a conductive fabrics with resistivity as low as 72 Ω/sq. PPy fabric gained resistivity less than one order of magnitude when aged for 18 months at room temperature. The stabilizing effect of the dopant pTSA against thermal degradation was demonstrated; the undoped samples reached resistivity of around 40 kΩ, whereas doped samples reached less than 2 kΩ at the same temperature and time.  相似文献   

Differential susceptibility of Hyalomma excavatum adults and nymphs to the entomopathogens Metarhizium anisopliae ARSEF 4556 and Steinernema carpocapsae     

Tariq M. Butt  Martyn Wood  James W. D. Taylor  Serkan Bakirci  Canan Hazir  Derya Ulug 《国际虫害防治杂志》2016,62(3):261-266

This study investigated the virulence of the entomopathogenic fungus, Metarhizium anisopliae strain ARSEF 4556, and the entomopathogenic nematode Steinernema carpocapsae against adult and nymphal stages of the tick Hyalomma anatolicum excavatum. The fungus was tested at three different concentrations, 10⁶, 10⁷, and 10⁸ conidia ml^?1. Ticks were exposed to 4000 IJs of S. carpocapsae in 0.5 ml distilled water in Petri dishes lined with 2 layers of moist filter paper. Adult ticks were not susceptible to M. anisopliae, whereas the nymphs were highly susceptible. Nymph mortality was dose dependent with all ticks being killed at the highest dose 96 hours post-inoculation. In contrast, S. carpocapsae was much more effective against engorged adults than unfed adults or nymphs. Tick susceptibility was not influenced by gender. The mean mortalities of the unfed adult males, females, and nymphs were 30% ± 9.2%, 40% ± 7.5%, and 36% ± 4.7%, respectively. Nymphal mortality was 36% and there was a significant difference between nematode treatment and control group (P < 0.05).  相似文献   

Assessment of drought tolerance in mung bean cultivars/lines as depicted by the activities of germination enzymes,seedling’s antioxidative potential and nutrient acquisition     

Qasim Ali  Muhammad Tariq Javed  Ali Noman  Muhammad Zulqarnain Haider  Muhammad Waseem  Naeem Iqbal 《Archives of Agronomy and Soil Science》2018,64(1):84-102

Drought stress hampers firm crop stand establishment and yield in arid and semiarid regions. The present study was conducted to examine the drought tolerance of various mung bean cultivars/lines based on the seed germination characteristics in relation with the seedling’s antioxidative potential and nutrient uptake. Activities of germination enzymes, seed germination attributes, seedling biomass production and nutrient uptake of studied cultivars/lines were adversely affected due to PEG-induced drought but the total soluble proteins (TSP) and malondialdehyde (MDA) contents were increased. The activities of catalse (CAT) and ascorbate peroxidase (APX) increased in all cultivars/lines being the maximum in cv./line NM-2006 and 8005. The activities of superoxide dismutase (SOD) and peroxidase (POD) were increased in cv./line NM-2006 and 8005 under drought condition. The ascorbic acid (AsA) and total phenolic content (TPC) decreased and total flavonoid content (TFC) increased in all cultivars/lines due to drought. Significant reduction in N, P, K, Ca and Mg was found in all cvs./lines but Fe remain unchanged. In conclusion, cultivars/lines NM-2006, 8005 were recommended as drought tolerant and 97,006 and 97,001 as drought sensitive ones. The study outcomes will likely be helpful for the farmers growing mung bean in rain fed areas for the better productivity.  相似文献   

Role of ‘<Emphasis Type="Italic">Candidatus</Emphasis> Liberibacter solanacearum’ and <Emphasis Type="Italic">Bactericera cockerelli</Emphasis> Haplotypes in Zebra Chip Incidence and Symptom Severity     

Kylie D. Swisher Grimm  Tariq Mustafa  W. Rodney Cooper  Joseph E. Munyaneza 《American Journal of Potato Research》2018,95(6):709-719

Two haplotypes of the pathogen, ‘Candidatus Liberibacter solanacearum,’ (Lso) and four haplotypes of the insect vector, Bactericera cockerelli, are associated with zebra chip disease of potato. Whether disease severity or incidence is influenced by pathogen or insect haplotype is poorly understood. The role of Lso ‘A’ and ‘B,’ transmitted by three haplotypes of B. cockerelli, on disease severity and incidence in eight potato cultivars was analyzed. Both haplotypes of Lso induced tuber symptoms. In general, Lso B caused higher incidence of symptoms, and greater reduction in tubers compared with Lso A. Lso B was associated with more severe tuber symptoms, producing fewer mild or moderate tuber symptoms. Lso A was associated with less severe tuber symptoms, despite being able to induce severe symptoms. Disease incidence, tuber yield, and symptom severity ratings were not dependent upon the psyllid haplotype transmitting the pathogen, suggesting that pathogen, not insect haplotype affects Lso transmission.  相似文献   

Effect of nitrogen on yield,quality, and irrigation water use efficiency of drip fertigated grafted watermelon (Citrullus lanatus) grown on a calcareous soil     

Asad M. F. AlKhader  Muien M. Qaryouti  Tariq Yousef Mohammed Okasheh 《Journal of plant nutrition》2019,42(7):737-748

A two-year field experiment was conducted during the growing seasons 2016 and 2017 to investigate the response of drip fertigated watermelon to different rates of nitrogen (0, 10, 20, 30, and 40?g/m³ N) applied in the form of ammonium sulfate (AS). The combined effect of nitrogen (N) and sulfur (S) was investigated. Irrigation water use efficiency (IWUE) under the different N levels was, also, evaluated. N levels in the irrigation water induced a significant effect on yield parameters (total and commercial yields, dry matter yield, plant yield, and fruit number). Increasing the level of N also induced significant increases in fruit length and fruit fresh weight. IWUE was also significantly improved at high levels of N. Fertigation using modern techniques can be considered an efficient method in the delivery of N to the crop at N levels of 30–40?g/m³, as ammonium sulfate.  相似文献   

Soil and microbial biomass stoichiometry regulate soil organic carbon and nitrogen mineralization in rice-wheat rotation subjected to long-term fertilization     

Ashraf  Muhammad Nadeem  Hu  Cheng  Wu  Lei  Duan  Yinghua  Zhang  Wenju  Aziz  Tariq  Cai  Andong  Abrar  Muhammad Mohsin  Xu  Minggang 《Journal of Soils and Sediments》2020,20(8):3103-3113

Journal of Soils and Sediments - Soil microbial biomass (SMB), as the source and sink of soil nutrients, and its stoichiometry play a key role in soil organic carbon (SOC) and nitrogen (N)...  相似文献   

Epidemiology of gastrointestinal nematodes of sheep managed under traditional husbandry system in Kashmir valley   总被引：1，自引：0，他引：1  

Tariq KA  Chishti MZ  Ahmad F  Shawl AS 《Veterinary parasitology》2008,158(1-2):138-143

The present study was conducted with the objective to investigate the seasonal epidemiological prevalence of gastrointestinal tract (GIT) nematodes in different age groups, sexes and breeds (genotypes) of sheep through necropsy and faecal analysis over a period of 2 years in Kashmir valley, India. A total of 1533 sheep were examined [faecal examination: 1035 (year 1: 561, year 2: 474); necropsy: 498 (year 1: 232, year 2: 266)]. Out of these, 945 (61.64%) were found infected [faecal examination: 697 (67.34%, year 1: 390 (69.51%), year 2: 307 (46.99%); necropsy: 248 (49.79%, year 1: 123 (53.01%), year 2: 125 (64.69%)] with GIT nematodes. The over all prevalence of GIT nematodes in sheep in year 1 was 64.76 and 58.37% in year 2 (P=0.04). The parasites in decreasing order of prevalence (%) in sheep were Haemonchus contortus (59.6); Ostertagia circumcincta (38.0); Bunostomum trigonocephalum (37.7); Chabertia ovina (37.7); Trichostrongylus spp. (33.9); Nematodirus spathiger (29.4); Oesophagostomum columbianum (28.4); Trichuris ovis (23.5) and Marshallagia marshalli (22.1). Season, sex, age, and genotype were the factors that influenced the epidemiological prevalence of GIT nematodes in sheep in the present study. The maximum nematode infection was observed in summer season and lowest in winter (P=0.0005). Local Kashmiri breed was less infected as compared to other genotypes (P>0.05). Lower age groups were more infected than adult animals (P>/=0.05). Prevalence was higher in rams (males) than eves (females) (P>0.05). The present study will initially be of great significance to add to the existing knowledge of the epidemiology of GIT nematodes of small ruminants and the findings will be quite helpful to devise the appropriate control and prophylactic strategies for GIT nematodiasis of sheep reared under the temperate agro-climatic conditions.  相似文献   

A cross-sectional study of methicillin-resistant Staphylococcus aureus at the equine-human interface     

Waqar  Namra  Amin  Quratulain  Munir  Tariq  Ikram  Muhammad Sohaib  Shahzad  Naveed  Mirza  Arkim  Ali  Arshad  Arshad  Muhammad Imran 《Tropical animal health and production》2019,51(7):1927-1933

Tropical Animal Health and Production - The present study aimed at investigating the percent prevalence of methicillin-resistant Staphylococcus aureus (MRSA) in equines and associated personnel. A...  相似文献   

Efficiency of Dry Matter and Nitrogen Accumulation and Redistribution in Wheat as Affected by Tillage and Nitrogen Management     

Ahmad Khan  Mohammad Tariq Jan  Amanullah Jan  Zahir Shah  Mohammad Arif 《Journal of plant nutrition》2014,37(5):723-737

Field experiments were conducted over 2 years with the hypothesis that farmyard manure (FYM), soybean residue (SR) as sole and/or in combination with urea under different tillage practices has similar effects on crop nitrogen (N) status and accumulation of dry matter (DM). Conventional ploughed plots had higher DM than other. Post anthesis accumulation of DM for minimum tillage (MT) was 4% higher than DT. Incorporation of 20 tons FYM ha^?1 combined with 30 or 60 kg ha^?1 had higher DM and N partitioned to leaves, stem, and spike than control. Leaves accumulated more DM at anthesis stage than other, whereas stem and spike at maturity than earlier stages. Fertilized plots had higher DM and N redistribution efficiency than control. However, N remobilization increased linearly with increasing DM accumulation (r² = 22%). It was concluded that FYM coupled with N under MT showed marked variations for DM partition and N status in wheat than other treatments.  相似文献