TAILIEUCHUNG - Optimizing water and nitrogen use for maize production under semiarid conditions

Water and nitrogen are among the most important crop inputs for optimum production of maize (Zea mays L.). A comprehensive experiment was conducted during 2009 and 2010 under the semiarid conditions of Pakistan to evaluate the effects of water and N applications on the growth and yield of irrigated maize. | Research Article Turk J Agric For 36 (2012) 519-532 © TÜBİTAK doi: Optimizing water and nitrogen use for maize production under semiarid conditions Hafiz Mohkum HAMMAD1,*, Ashfaq AHMAD1, Farhat ABBAS2, Wajid FARHAD1 1 Agro-Climatology Laboratory, Department of Agronomy, University of Agriculture, Faisalabad-38040, Punjab - PAKISTAN 2 Department of Environmental Sciences, Government College University, Faisalabad-38000, Punjab - PAKISTAN Received: ● Accepted: Abstract: Water and nitrogen are among the most important crop inputs for optimum production of maize (Zea mays L.). A comprehensive experiment was conducted during 2009 and 2010 under the semiarid conditions of Pakistan to evaluate the effects of water and N applications on the growth and yield of irrigated maize. The objective was to formulate water and N best management practices (BMPs) for the above conditions. Three irrigation regimes (525, 450, and 375 mm ha-1) with 5 N rates (0, 75, 150, 225, and 300 kg ha-1) were tested using a split plot with a randomized complete block design. The results revealed that the irrigation and N treatments significantly affected growth and development of the crop plants. Photosynthesis and transpiration rates were influenced by the applied nutrients. The N application at 225 kg ha-1 resulted in maximum values for photosynthesis ( and μmol m-2 s-1 during 2009 and 2010, respectively) and transpiration ( and m mol m-2 s-1 during 2009 and 2010, respectively). The highest values for leaf area index () and grain yield ( t ha-1) were also recorded at this N treatment during both growing seasons. On the other hand, the mean crop growth rate ( g m-2 day-1) and biological yield ( t ha-1) were achieved with the 300 kg N ha-1 treatments in 2009 and 2010. Nitrogen use efficiency (NUE) was optimum at 75 kg N ha-1 during both seasons. The highest water use efficiency (WUE) ( and kg ha-1 mm-1

• Nông nghiệp
• Optimizing wate
• Crop growth
• Maize yield
• Nitrogen use efficiency
• Water use efficiency
• Agricultural activities
• Non agricultural activities of ethnic minorities
• Activities of ethnic minorities
• Non agricultural activities
• Vietnam and China borderland
• Cross border economy
• Farm women
• Drudgery of farm women
• Post harvest activities and marketing
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• Agricultural areas
• Plant species richness
• Flora of Agricultural
• Grid squares A1
• Extension activities
• Raitha Samparka Kendras
• Profile characteristics
• Participation of farmers
• Agricultural extension activities
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• Agricultural students
• Entrepreneurial activities
• Technical confidence
• Budding entrepreneurs
• Rural youth
• Patan block of Jabalpur district
• Analyzing different categories
• Constraints faced
• Rural youth regarding participation
• Waste treatment
• Research status of waste collection
• Agricultural production activities
• Environmental protection of the basin
• Significant impact on water quality
• Level of participation
• Extent of participation
• Activities of ATMA
• Agricultural technology management agency
• Role of rural women
• Rural women in agriculture activities
• Agriculture activities
• Livestock management
• Various agricultural activities
• Interstate out migration
• Unorganized sector
• Snow ball technique
• Nonfarm activities
• Off farm activities
• The effect of agricultural land recovery
• People's livelihoods in the context of urbanization in Vietnam
• The context of urbanization in Vietnam
• Agricultural land acquisition
• New investment activities
• Ragi growers
• Knowledge of Ragi growers towards
• ATMA were purposively selected
• Indigenous technology knowledge
• Implements used in agriculture
• Allied sector in Tripura
• Allied agricultural activities
• Indigenous agricultural know how
• Heavy metal pollution
• Agricultural soils
• Anthropogenic activities
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• Atomic absorption spectrophotometer
• Agricultural science
• Activities of antioxidant enzymes
• Developing date palm somatic
• Zygotic embryos in vitro
• Antioxidant enzymes
• Agricultural sciences
• Microwave heating
• The antioxidant activities of tomato
• Ion chelating
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• Biological chemical
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• Fermented tea
• Sterilization method
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• Role of women in agriculture
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• Agricultural activities taken up by women
• Extension contact
• Extent of involvement of women
• Major crops of Telangana state
• Agricultural credit
• Institutional advances
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