Evaluation of lead toxicity in maize (Zea mays L.) as influenced by organic and inorganic sources of nitrogen

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Evaluation of lead toxicity in maize (Zea mays L.) as influenced by organic and inorganic sources of nitrogen

Madeeha Imdad, Sohail Irshad, Haroon Zaman Khan, Salma Niaz, Muhammad Ashfaq Wahid
Int. J. Biosci.11( 4), 198-206, October 2017.
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Number of human health risks and environmental degradation is associated with lead toxicity. It is imperative to examine and underpin sound solutions. There fore, present study was undertaken at Agronomic Research Area, University of Agriculture, Faisalabad with aim to investigate the effect of lead toxicity in maize (Zea mays L.) as influenced by organic and inorganic sources of nitrogen. Experiment was laid out in randomized complete block design (RCBD) with factorial arrangement having three replications and two factors i.e. nitrogen sources (control, 100 % N from urea, 100 % N from poultry manure, 75 % N from urea and 25 % N from poultry manure and 50 % N from urea and 50 % N from poultry manure) and lead management (0 kg Pb ha-1 and 100 kg Pb ha-1) with a plot size of 3 m × 6 m. Data on yield and quality parameters were recorded by following the standard procedures. Results showed that maximum cob length (19.78 cm), cob diameter (3.87 cm), no. of grains per cob (486.67), biological yield (18.17 tons ha-1), grain yield (6.51 tons ha-1) and seed protein content (8.81 %) were recorded in N3L0 (75 % N from urea and 25% N from poultry manure with 0 kg Pb ha-1), while minimum results were recorded in N0L1 (0 kg N with 100 kg Pb ha-1). Highest seed oil contents (4.3 %) were found in N0 (0 kg N ha-1). It is concluded that nitrogen application through combined use of organic and inorganic sources significantly increased the yield and also in the presence of organic manure toxicity of lead greatly reduced.


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