The effect of planting date, irrigation interval, iron and zinc sulfate foliar application on morphological and fruit yield in Okra

Articles in Press

Document Type : Research Paper

Authors

1 Assistant Professor, Department of Agriculture, Payame Noor University, PO Box 19395-3697, Tehran, Iran.

2 Assistant Professor, Department of Agriculture, Payame Noor University, PO Box 19395-3697, Tehran, Iran. Email address: 6341ms@pnu.ac.ir

3 Associate Professor, Department of Agriculture, Payame Noor University, PO Box 19395-3697, Tehran, Iran.

Abstract

Drought and lack of food are the main factors limiting plant production in arid and semi-arid regions, including Iran. In order to determine the suitably planting date, assessing the impact of the urea and foliar application of Fe and Zn in different soil moisture conditions morphological characteristics of Okra, a factorial experiment based on a randomized complete block design with three replicate was conducted in Marivan Payame Noor University at 2023-2024. Treatment include four factors: planting date (5 May, 22 May), irrigation intervals (with 4 and 8 days interval), urea (200 kg.ha-1 and control) and foliar application of Fe and Zn (FeSO4, ZnSO4 and control).The results showed that 4 days irrigation intervals to 8 days, increase significantly the final yield fruit. Urea application during the rooting and twice Fe and Zn foliar application created significant differences in some characteristics including shoot wet and dry weight, root wet and dry weight, Fe and Zn concentration and fruit number. Finally, it can be concluded that the best yield of Okra was observed in combination of 5 May planting, irrigation intervals 4 days, the Fe foliar application and 200 kg.ha-1 urea. In 8 days irrigation intervals and planting date at 22 May without urea and without Fe and Zn foliar application the results were inappropriate. Also, proper nutrition (urea, zinc sulfate, and iron) could not compensate for the negative effects of water stress (every eight days) and late planting date.

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Iranian Journal of Field Crop Science

Articles in Press, Accepted Manuscript
Available Online from 20 April 2025

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History

  • Receive Date: 23 December 2024
  • Revise Date: 16 February 2025
  • Accept Date: 26 February 2025
  • Publish Date: 20 April 2025

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