Muhammad Nawaz Shareef University of Agriculture

Multān, Pakistan

Muhammad Nawaz Shareef University of Agriculture

Multān, Pakistan

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PubMed | King Abdulaziz University, Islamia University of Bahawalpur, Northeast Agricultural University, China National Rice Research Institute and 18 more.
Type: | Journal: Environmental science and pollution research international | Year: 2017

Crop nutrient management is an essential component of any cropping system. With increasing concerns over environmental protection, improvement in fertilizer use efficiencies has become a prime goal in global agriculture system. Phosphorus (P) is one of the most important nutrients, and strategies are required to optimize its use in important arable crops like cotton (Gossypium hirsutum L.) that has great significance. Sustainable P use in crop production could significantly avoid environmental hazards resulting from over-P fertilization. Crop growth modeling has emerged as an effective tool to assess and predict the optimal nutrient requirements for different crops. In present study, Decision Support System for Agro-technology Transfer (DSSAT) sub-model CSM-CROPGRO-Cotton-P was evaluated to estimate the observed and simulated P use in two cotton cultivars grown at three P application rates under the semi-arid climate of southern Punjab, Pakistan. The results revealed that both the cultivars performed best at medium rate of P application (57kgha


Saeed S.,Muhammad Nawaz Shareef University of Agriculture | Naqqash M.N.,Nigde University | Jaleel W.,University of South China
Pakistan Journal of Zoology | Year: 2016

Cotton (Gossypium hirsutum L.) is life blood for the economy of Pakistan. Pakistan is the fourth largest cotton producer in the world. Yield of cotton in Pakistan is lesser as compared to international standard, due to attack of insect pests and diseases. Due to large scale adoption of Bt cotton, bollworms are not a major problem however attack of sucking pests have increased. Among the sucking pests, red cotton bug (Dysdercus koenigii Fabr) is an emerging pest, so there is urgent need of devising its control strategies so since from last 10 years its big stainer problem in Pakistan. Chemical control is adapted by approximately all farmers for about all types of pests in Pakistan. Seed dip method was used for the evaluation of toxicity of lufenuron (050 EC), chlorfenpyr (360 SC), deltamethrin (10 EC) and chlorpyrifos (40 EC) against 4th and 5th instar of D. koenigii after rearing in the laboratory. Susceptibility decreases in later instars i.e. with increase in vigor. Order of toxicity was chlorpyrifos>deltamethrin>lufenuron>chlorfenpyr. As the chlorpyrifos is a broad spectrum insecticide and is effective against a variety of insect-pests so it gave the best results in laboratory. Integrated pest management strategies include all the available control methods in a compatible manner to control a particular pest so only chemical control should not be focused and IPM strategies should be devised for the control of D. koenigii. © Copyright 2016 Zoological Society of Pakistan.


Shafiq S.,The University of Faisalabad | Akram N.A.,The University of Faisalabad | Ashraf M.,Muhammad Nawaz Shareef University of Agriculture | Ashraf M.,King Saud University
Scientia Horticulturae | Year: 2015

It is known that trehalose has the ability to mitigate the adverse effects of abiotic stresses on plants. Thus, the role of exogenously-applied trehalose was examined on water stress-induced changes in the enzymatic and non-enzymatic antioxidative defense system within roots (edible part) of Raphanus sativus L. (radish) plants. Two radish cvs. (Manu and 40-day) were grown under normal and water-deficit conditions. Trehalose was applied through two different modes, i.e., presowing seed treatment and foliar spray using its two levels, 25 and 50. mmol/l. It was observed that water deficiency significantly reduced the root fresh weight, while increased the accumulation of carotenoids, ascorbic acid (AsA), malondialdehyde (MDA), glycinebetaine (GB), and total soluble proteins (TSP) contents coupled with an increase in the activities of catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD) enzymes in the roots of radish. Both modes of exogenous application of trehalose were effective in reducing MDA contents, while improving root fresh weight, and contents of AsA, total phenolics, GB, total tocopherols and TSP as well as the activities of SOD, CAT and POD. It was observed that cv. Manu was better in MDA, total phenolics, GB, TSP contents and activities of CAT and POD, while cv. 40-day was better in root fresh weight, carotenoids, AsA and total phenolics. Overall, of both modes of exogenous application of trehalose, foliar application was most effective in improving the enzymatic and non-enzymatic antioxidant defense system in edible part of radish. © 2015 Elsevier B.V.


Kosar F.,The University of Faisalabad | Akram N.A.,The University of Faisalabad | Ashraf M.,Muhammad Nawaz Shareef University of Agriculture | Ashraf M.,King Saud University
South African Journal of Botany | Year: 2015

Aminolevulinic acid, one of the key precursors involved in chlorophyll biosynthesis, was applied exogenously to assess its role in improving seedling drought stress tolerance in two wheat cultivars (Shafaq-2000 and Auqab-06). Varying levels (0, 50, 100 and 150mgL-1) of 5-ALA were foliarly applied to one month old seedlings. Data showed that plant growth (shoot and root fresh and dry weights), chlorophyll a and b contents, chlorophyll a/b ratios, and leaf and root P of seedlings of both wheat cultivars decreased considerably at both drought stress regimes i.e. 80% and 60% of field capacities. In contrast, water-use efficiency (WUE) calculated as A/E and proline contents accumulated considerably under drought conditions in both wheat cultivars. However, none of the two water regimes altered sub-stomatal CO2 concentration (Ci), photosynthetic rate (A), stomatal conductance (gs), transpiration rate (E) and Ci/Ca ratio (Ca; ambient CO2 concentration), glycine betaine (GB) contents, leaf and root N, Ca2+, and K+ concentrations, activities of enzymatic antioxidants such as superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) and total soluble proteins in the seedlings of both wheat cultivars. 5-ALA enhanced shoot and root fresh and dry weights, chlorophyll pigments, GB contents, root K+, and N (leaf & root) in both wheat cultivars at the different water stress regimes. Of all ALA levels, 50 and 100mgL-1 were most effective in improving seedling growth. However, shoot and root fresh weights, shoot dry weights, chlorophyll a and b contents, A, E, gs, Ci and Ci/Ca, and proline contents were not affected by ALA treatments. Of the wheat cultivars, cv. Shafaq-2000 showed significantly higher shoot fresh and dry weights, chlorophyll b contents, gs and Ci, while cv. Uqab-06 was relatively better at proline accumulation, leaf and root P and root N concentrations. Overall, foliar-applied 5-ALA improved growth, chlorophyll a and b contents, GB, root K+, leaf and root N contents in both wheat cultivars at different water stress regimes, while all other attributes were not affected significantly. © 2014.


Ali M.,Muhammad Nawaz Shareef University of Agriculture | Saeed S.,Muhammad Nawaz Shareef University of Agriculture | Sajjad A.,University of Punjab
Neotropical Entomology | Year: 2016

In the context of global biodiversity decline, it is imperative to understand the different aspects of bee communities for sustaining the vital ecosystem service of pollination. Bee species can be assigned to functional groups (average difference among species in functionally related traits) on the basis of complementarity (trait variations exhibited by individual organisms) in their behavior but is not yet known which functional group trait is most important for seed set. In this study, first, the functional groups of bees were made based on their five selected traits (pollen deposition, visitation rate, stay time, visiting time of the day, body size) and then related to the seed set of obligate cross-pollinated Luffa gourd (Luffa aegyptiaca). We found that bee diversity and abundance differed significantly among the studied plots, but only the bee species richness was positively related to the seed set. Functional group diversity in terms of pollen deposition explained even more of the variance in seed set (r2 = 0.74) than did the species richness (r2 = 0.53) making it the most important trait of bee species for predicting the crop reproductive success. © 2016, Sociedade Entomológica do Brasil.


Kaya C.,Harran University | Ashraf M.,Muhammad Nawaz Shareef University of Agriculture
Scientia Horticulturae | Year: 2015

To assess the effectiveness of foliage spray of nitric oxide (NO) on some key physio-biochemical variables of tomato (Lycopercison esculentum cv. 'Target NF1') plants subjected to boron (B) toxicity, a glasshouse trial was established. A factorial experiment was conducted with three levels of B (0.5, 3.5 and 6.5mg/L) and 0 or 0.1mM NO as foliar spray. Boron toxicity caused marked decrease in dry matter and fruit yield in tomato plants as compared to non-stresses plants, but increased electrolyte leakage (EL), proline, malondialdehyde (MDA) and hydrogen peroxide (H2O2) contents coupled with superoxide dismutase (SOD; EC 1.15.1.1), peroxidase (POD; EC. 1.11.1.7), catalase (CAT; EC. 1.11.1.6) activities and total antioxidant activity (TAA). However, exogenous application of NO partly mitigated the damaging effects of B toxicity on key growth parameters which due to low membrane permeability, H2O2 and MDA contents, TAA and antioxidant enzyme activities. Leaf B was higher in tomato plants at B treatments than that in the control plants. High B reduced leaf Ca2+, N and K+ as compared to those in the control plants. Foliar application of NO lowered B concentration and increased Ca2+, K+ and N levels in the leaves. The study clearly reveals that exogenous NO can overcome the deleterious effects of B toxicity on tomato fruit yield and whole plant biomass by reducing the concentrations of B, MDA and H2O2as well as electrolyte leakage in the leaves. © 2015 Elsevier B.V.


PubMed | Muhammad Nawaz Shareef University of Agriculture, Huazhong Agricultural University and University of Punjab
Type: | Journal: Environmental science and pollution research international | Year: 2016

Cotton is planted worldwide as a cash crop providing us fiber, edible oil, and animal feed as well. In this review, we presented a contemporary synthesis of the existing data regarding the importance of nitrogen application and tillage system on cotton growth and greenhouse gas (GHG) emission. Cotton growth and development are greatly influenced by nitrogen (N); therefore, proper N application is important in this context. Tillage system also influences cottonseed yield. Conservation tillage shows more promising results as compared to the conventional tillage in the context of cotton growth and GHG emission. Moreover, the research and knowledge gap relating to nitrogen application, tillage and cotton growth and yield, and GHG emission was also highlighted in order to guide the further studies in the future. Although limited data were available regarding N application, tillage and their interactive effects on cotton performance, and GHG emission, we also tried to highlight some key factors which influence them significantly.


PubMed | Muhammad Nawaz Shareef University of Agriculture and University of Punjab
Type: Journal Article | Journal: Neotropical entomology | Year: 2016

In the context of global biodiversity decline, it is imperative to understand the different aspects of bee communities for sustaining the vital ecosystem service of pollination. Bee species can be assigned to functional groups (average difference among species in functionally related traits) on the basis of complementarity (trait variations exhibited by individual organisms) in their behavior but is not yet known which functional group trait is most important for seed set. In this study, first, the functional groups of bees were made based on their five selected traits (pollen deposition, visitation rate, stay time, visiting time of the day, body size) and then related to the seed set of obligate cross-pollinated Luffa gourd (Luffa aegyptiaca). We found that bee diversity and abundance differed significantly among the studied plots, but only the bee species richness was positively related to the seed set. Functional group diversity in terms of pollen deposition explained even more of the variance in seed set (r


PubMed | Huazhong Agricultural University, University of Agriculture at Faisalabad and Muhammad Nawaz Shareef University of Agriculture
Type: | Journal: Plant physiology and biochemistry : PPB | Year: 2016

Lithium (Li) is a naturally occurring element; however, it is one of the non-essential metals for life. Lithium is becoming a serious matter of discussion for the people who do research on trace metals and environmental toxicity in plants. Due to limited information available regarding its mobility from soil to plants, the adverse effects of Li toxicity to plants are still unclear. This article briefly discusses issues around Li, its role and its essentiality in plants and research directions that may assist in inter-disciplinary studies to evaluate the importance of Lis toxicity. Further, potential remediation approaches will also be highlighted in this review. Briefly, Li influenced the growth of plants in both stimulation and reduction ways, depending on the concentration of Li in growth medium. On the negative side, Li reduces the plant growth by interrupting numerous physiological processes and altering metabolism in plant. The contamination of soil by Li is becoming a serious problem, which might be a threat for crop production in the near future. Additionally, lack of considerable information about the tolerance mechanisms of plants further intensifies the situation. Therefore, future research should emphasize in finding prominent and approachable solutions to minimize the entry of Li from its sources (especially from Li batteries) into the soil and food chain.


PubMed | Muhammad Nawaz Shareef University of Agriculture, Pmas Arid Agriculture University and Government College University at Faisalabad
Type: Journal Article | Journal: Environmental science and pollution research international | Year: 2016

Pesticides are used for controlling the development of various pests in agricultural crops worldwide. Despite their agricultural benefits, pesticides are often considered a serious threat to the environment because of their persistent nature and the anomalies they create. Hence removal of such pesticides from the environment is a topic of interest for the researchers nowadays. During the recent years, use of biological resources to degrade or remove pesticides has emerged as a powerful tool for their in situ degradation and remediation. Fungi are among such bioresources that have been widely characterized and applied for biodegradation and bioremediation of pesticides. This review article presents the perspectives of using fungi for biodegradation and bioremediation of pesticides in liquid and soil media. This review clearly indicates that fungal isolates are an effective bioresource to degrade different pesticides including lindane, methamidophos, endosulfan, chlorpyrifos, atrazine, cypermethrin, dieldrin, methyl parathion, heptachlor, etc. However, rate of fungal degradationof pesticides depends on soil moisture content, nutrient availability, pH, temperature, oxygen level, etc. Fungal strains were found to harbor different processes including hydroxylation, demethylation, dechlorination, dioxygenation, esterification, dehydrochlorination, oxidation, etc during the biodegradation of different pesticides having varying functional groups. Moreover, the biodegradation of different pesticides was found to be mediated by involvement of different enzymes including laccase, hydrolase, peroxidase, esterase, dehydrogenase, manganese peroxidase, lignin peroxidase, etc. The recent advances in understanding the fungal biodegradation of pesticides focusing on the processes, pathways, genes/enzymes and factors affecting the biodegradation have also been presented in this review article.

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