Iranian Journal of Field Crop Science

Iranian Journal of Field Crop Science

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

Authors
Ali Heidarzadeh 1
Majid AghaAlikhani 2
1 University of Tarbiat Modares
2 Uninersity of Tarbiat Modares
10.22059/ijfcs.2018.219214.654210
Abstract
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.‎
Keywords
Competition index
Sustainable agriculture
compost
Land equivalent ratio (LER)‎
Subjects
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Iranian Journal of Field Crop Science
Volume 50, Issue 2
Summer 2019
Pages 35-45

  • Receive Date 06 December 2016
  • Revise Date 22 May 2018
  • Accept Date 29 July 2018
  • Publish Date 22 June 2019