Maximizing land productivity by diversified cropping systems with different nitrogen fertilizer types

Abd El-Hafeez Ahmed ZOHRY, Khadra A. ABBADY, Enshrah I.M. EL-MAAZ, Hoda M.R.M. AHMED

Abstract


Six field experiments were conducted in Giza Agricultural Research Station, Egypt during 2010, 2011 and 2012 growing seasons to study the effect of two types of N fertilizers (urea and urea form as slow-release (UF)) on intercropping cowpea with sunflower and intercropping wheat with pea. A split plot design with three replications was used. The results indicated that insignificant effect of cropping systems was found for sunflower and significant effect was found for cowpea yield. Significant effect of N fertilizers was found on sunflower and insignificant effect was found for cowpea yield. Furthermore, insignificant effect of interaction of cropping systems and N fertilizers was found for sunflower and significant effect was found for cowpea yield. With respect to wheat and pea intercropping, both crops were significantly affected by intercropping system. Significant effect of N fertilizers was found on wheat and insignificant effect was found for pea yield. Both wheat and pea were significantly affected by the interaction of cropping system and N fertilizers. Yield advantage was achieved because land equivalent ratio exceeded 1.00. Dominance analysis proved that leguminous crop is dominated component. Thus, the studied intercropping systems could be recommended to farmers due to its beneficial returns.

Keywords


sunflower intercropped with cowpea; wheat intercropped with pea; urea; slow-release urea form; competitive relationships

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References


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DOI: http://dx.doi.org/10.14720/aas.2017.109.3.01

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