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Water deficit in semi-arid areas is a limiting factor affecting crop production and quality. The Middle East suffers from low rainfall and high temperatures. Foliar fertilization with Tecamin max®, compensates for nutrient deficiency by roots due to water deficit. The water soluble fertilizer Tecamin max® was applied to foliage to determine effects on morphological traits of the okra [Abelmoschus esculentus (L.) Moench], cvs. Samara and Ptira, under water deficit. There were irrigation levels of 50 and 100% based on field capacity, and concentrations of Tecamin max® (0, 2.5 and 5.0 mL∙L−1). 'Samara' had the tallest plants (115.50 cm), most leaves/plant (~ 31), longest time to flowering (30.44 days), most fruit/plant (51.38) and highest total yield (1.120 kg∙m−2). The 100% irrigation level produced values for plant height (107.66 cm), number of branches/plant (12.72), number of leaves/plant (29.77), total leaf area (492.00 dm2/plant), number of fruit/plant (46.27), and total yield (0.982 kg∙m−2) that were higher than for the 50% level. The 2.5 mL∙L−1 application of Tecamin max® produced plants that were 110.75 cm tall, having 14.25 branches/plant, a total leaf area of 529.33 dm2/plant, ~ 48 fruit/plant and total yield of 1.056 kg∙m−2 that were greater than for the other treatments. Foliar application of Tecamin max®, regardless of cultivar, improves vegetative growth under normal, and water deficit, conditions. [ABSTRACT FROM AUTHOR]

This study was designed to observe the effects of different rates of foliar application of Tecamin max® on growth, yield and water use efficiency (WUE) of okra under water deficit. The field experiment was conducted from April till July 2016 at the teaching and research farm of University of Diyala, Iraq. Performance of okra genotype 'Samara' and 'Ptira' was assessed by foliar application of Tecamin max® at (0, 2.5 and 5.0 mL L-1) and two irrigation levels (50 and 100% based on field capacity). The results showed that chlorophyll content, fruit weight, yield per plant, total yield and WUE were significantly affected by genotype and irrigations levels and application of Tecamin max®. 'Samara' genotype had the highest chlorophyll content, fruit weight, yield per plant, total yield and water use efficiency. Foliar application of Tecamin max® at the rates of 2.5 mL L-1 showed the highest fruit weight, yield performance and WUE. It was followed by foliar application of 5.0 mL L-1. No application of Tecamin max® showed the worst results in all the studied traits. [ABSTRACT FROM AUTHOR]