Investigation of the NPK Nutrition of Henna Ecotypes (Lowsonia inermis L.) Based on Photosynthetic and Growth Indices in Shahdad Area

Subject Areas : Journal of Crop Ecophysiology

Amin  Pasandi Pour ¹ (Ph.D. Student of Agronomy, Member of Young Researcher Society, Shahid Bahonar University of Kerman, Iran)
Hassan  Farahbakhsh ² (Associate Professor of Agronomy, Shahid Bahonar University of Kerman, Iran)

Received: 2017-11-08 Accepted : 2018-02-19 Published : 2018-02-20

Keywords: nitrogen, Growth indices, phosphorus, Potassium, Henna, Net photosynthesis,

Abstract :

Determination of crop NPK requirements is important for proper crop growth. To determine the NPK nutrition of henna (Lowsonia inermis L.), a factorial experiment based on randomized complete block design was carried out in the Shahdad, Kerman province, in 2015-2016. In this study, response of three henna ecotypes (Bam, Shahdad and Roodbar) with four fertilizer combinations consisting of nitrogen, phosphorus and potassium (N: K: P, 0: 0: 0, 100: 50: 50, 200: 100: 100, 300: 200: 150 kg/ha) were investigated for some growth indices like CGR, RGR, net photosynthesis, transpiration rate and stomatal conductance. The results indicated that the highest mean of CGR, RGR, net photosynthesis, transpiration rate, stomatal conductance and total dry yield belonged to Shahdad ecotype. While, there was no statistically significant difference between the Shahdad and Roodbar ecotypes for leaf dry yield. The effect of NPK nutrition treatment on the most of traits measured was significant at 1% probability level. The highest mean of traits measured belonged to NPK combination of 300: 200: 150, while the difference was not significant from 200: 100: 100 for leaf dry yield and RGR. In this study, the interaction of ecotype and nutrition was not significant for the traits under study. Therefore, according to the results, it can be concluded that Shahdad and Roodbar ecotypes and combinations of nitrogen, phosphorus and potassium fertilizers with a ratio of 200: 100: 100 are appropriate for henna in Shahdad climatic conditions.

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