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| SHAH,R.H.; BALOCH,M.S.; KHAN,A.A.; IJAZ,M.; ZUBAIR,M.. |
| ABSTRACT: Two-year field experiments were conducted to investigate the phytotoxicity of mesquite (Prosopis juliflora) on weed control and yield of wheat in 2013-14 and 2014-15. Mesquite aqueous extracts were prepared with 10, 20, 30 and 40% concentration of leaves, stems, and roots and were compared with tap water (control). These experiments were laid out in a completely randomized block design with four replications. All parameters (weed density, fresh weed biomass, dry weed biomass, chlorophyll content, leaf area index, leaf area duration, crop growth rate, net assimilation rate, plant height and number of tillers) were significantly reduced by applying the mesquite extracts. Among different concentrations, the maximum level (40%) of all three plant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allelopathy; Extract; Weeds; Wheat yield. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100214 |
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| Best, Peter; Stone, Roger; Sosenko, Olena. |
| Global and hemispheric climate indicators have proved useful in many countries for characterising intra- and inter-annual variability in climate processes, agricultural output and biomass production. They also form the basis of successful seasonal climate and production prediction systems for the probability distributions of allied parameters such as rainfall or crop yield. Climate risk management via derivative, insurance or bond instruments has only recently incorporated non-local climate parameters such as "teleconnection" indices in payoff functions and overall design. A feasibility study of using the Southern Oscillation Index in weather derivatives for the Australian wheat industry has suggested several such climate-anomaly indicators as suitable... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Weather derivatives; SOI; Wheat yield; Australian case studies; Climate adaptation; Agribusiness; Risk and Uncertainty. |
| Ano: 2007 |
URL: http://purl.umn.edu/9257 |
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| Kramer,Luiz Fernando Machado; Müller,Marcelo Marques Lopes; Tormena,Cássio Antônio; Michalovicz,Leandro; Nascimento,Ronaldo do; Vicensi,Marcelo. |
| Soil management influences the chemical and physical properties of soil. Chemical conditions have been thoroughly studied, while the role of soil physical conditions regarding crop yield has been neglected. This study aimed to analyze the wheat yield and its relationship with physical properties of an Oxisol under no-tillage (NT). The study was carried out between 2010 and 2011, in Reserva do Iguaçu, State of Paraná, Brazil, on the Campo Bonito farm, after 25 years of NT management. Based on harvest maps of barley (2006), wheat (2007) and maize (2009) of a plot (150 ha), zones with higher and lower yield potential (Z1 and Z2, respectively) were identified. Sampling grids with 16 units (50 x 50 m) and three sampling points per unit were established. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil physical quality; Wheat yield; Correlation. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000500011 |
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| Khaliq,Abdul; Matloob,Amar; Tanveer,Asif; Areeb,Ahsan; Aslam,Farhena; Abbas,Nadeem. |
| Reduction in herbicide usage without compromising yields can lead to less environmental harm and lower production costs. Field trials were conducted to appraise the efficacy of reduced doses (25, 50, and 75% of the label dose) of a post emergence sulfonylurea herbicide [Atlantis 3.6WG (iodo+mesosulfuron)] to control weeds in wheat (Triticum aestivum L.) fields of Punjab, Pakistan. Below-labeled-doses were quite effective in suppressing total weed density (72-95%) and biomass (83-94%), and wheat grain yield was increased by 22 to 48% over the weedy control, while label dose of iodo+mesosulfuron improved yield by 53%. Iodo+mesosulfuron at 25 and 50% of the label dose inhibited grass weeds by 43 to 64%, albeit their biomass was suppressed by > 80% over... |
| Tipo: Journal article |
Palavras-chave: Reduced herbicide dose; Weed suppression; Efficiency; Wheat yield. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000300013 |
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