Effect of vermicompost and urea on yield and profitability indices of sweet corn (Zea mays var. Saccharata) and okra(Abelmoschus esculentus) intercropping

Document Type : Research Paper


1 University of Tarbiat Modares

2 Uninersity of Tarbiat Modares


In order to evaluate the intercropping of Sweet corn and Okra affected by vermicompost and ‎urea fertilizer a field experiment was conducted at research field of Tarbiat Modares ‎University during 2015 spring and summer. In this research effect of‏ ‏five mixing ratio‏ ‏of ‎sweet corn/okra including: 100:0 (sweet corn monoculture), 75:25, 50:50, 25:75 and 0:100 ‎‎(okra monoculture) and two nutrition systems consisted of chemical (urea) and organic ‎‎(vermicompost) were investigated with factorial arrangement of treatments based on ‎randomized complete block design with three replications. The results showed that factors ‎interaction on the number of desirable ear, sweet corn yield and okra seed yield were ‎significant (P≤ 0.01). Also mixing ratio effect on sweet corn 100 kernel weight (P≤ 0.05), okra ‎‎1000 kernel weight and the number of fruits square meter (P≤ 0.01) was significant. ‎According to mean comparisons the highest sweet corn yields (9614.58 kg.ha-1) and okra ‎‎(2848.65 kg.ha-1) was obtained in their monoculture receiving the chemical fertilizer. The ‎highest LER‏ ‏‎(2.10) was obtained in 50:50 treatment under vermicompost nutrition system ‎followed by 75:25 under same nutrition system (LER=1.93). Also competition index ‎evaluation in the different treatment confirmed the rating of superior treatments.‎


Main Subjects

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Volume 50, Issue 2
July 2019
Pages 35-45
  • Receive Date: 06 December 2016
  • Revise Date: 22 May 2018
  • Accept Date: 29 July 2018
  • Publish Date: 22 June 2019