Increased use of chemical nitrogen fertilizers (N) in agricultural production continues to raise concerns,
because of the risk of surplus N leaving the plant-soil system and thereby causing environmental
contamination. Therefore, decreasing nitrate leaching from crop production fields, such as in corn
fields, is of considerable importance. Against this backdrop, a field experiment was conducted to
assess the effect of pelleted fertilizer, produced by mixing urea and dry cow dung manure, on corn yield
and its components. The study was carried out, during the 2009 corn-growing season, at the
experimental farm of College of Abouraihan, University of Tehran in Iran. The factorial design of the
study comprised of randomized complete block with three replications. Factors this experiment
involved: first factor was two levels of fertilizer application method which include pellet and mixed with
soil, and second factor was four levels of nitrogen fertilizer pulse dry cow dung (46+600, 92+600,
138+600 and 184+600 kg/ha). The biological yield, grain yield, number of grains per ear, grain weight,
harvest index, and grain protein content was calculated. Treatment T8 (184+600 kg/ha pelleted fertilizer)
significantly produced better harvest index, highest 1000 grain weight, the maximum biological yield,
the maximum grain yield and highest grain protein content per hectare. The use of pelleted fertilizer is
therefore a better alternative to uncoated nitrogen fertilizer due to its slow and continuous nutrient
release for plant uptake at different stages of its growth.
Increased use of chemical nitrogen fertilizers (N) in agricultural production continues to raise concerns,because of the risk of surplus N leaving the plant-soil system and thereby causing environmentalcontamination. Therefore, decreasing nitrate leaching from crop production fields, such as in cornfields, is of considerable importance. Against this backdrop, a field experiment was conducted toassess the effect of pelleted fertilizer, produced by mixing urea and dry cow dung manure, on corn yieldand its components. The study was carried out, during the 2009 corn-growing season, at theexperimental farm of College of Abouraihan, University of Tehran in Iran. The factorial design of thestudy comprised of randomized complete block with three replications. Factors this experimentinvolved: first factor was two levels of fertilizer application method which include pellet and mixed withsoil, and second factor was four levels of nitrogen fertilizer pulse dry cow dung (46+600, 92+600,138+600 and 184+600 kg/ha). The biological yield, grain yield, number of grains per ear, grain weight,harvest index, and grain protein content was calculated. Treatment T8 (184+600 kg/ha pelleted fertilizer)significantly produced better harvest index, highest 1000 grain weight, the maximum biological yield,the maximum grain yield and highest grain protein content per hectare. The use of pelleted fertilizer istherefore a better alternative to uncoated nitrogen fertilizer due to its slow and continuous nutrientrelease for plant uptake at different stages of its growth.
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