Abstract
The present study was based on the general hypothesis that boron may affect the accumulation and utilization of other nutrients in plant. For this purpose a field experiment was carried out to find out the influence of boron on the different nutrients content in FCV tobacco (Nicotiana tabacum L.) at TRS Khan Garhi, Mardan, during 2010-2011. Two varieties TM-2008 and Speight G-28 were tested and six levels of boron (0, 0.5, 1, 2, 3 and 5 kgm Cl/B and Mn/Fe were decreased while K/Cl and Zn/Cu ratios were increased at lower boron concentrations but decreased at higher concentrations of boron. The fertilizer use efficiency of both the cultivars showed similar trend; however, Speight G-28 was more efficient than TM-2008 in boron accumulation. The overall results revealed that the application of boron should be encouraged for balancing nutrients concentration, thus getting higher yield in the prevailing conditions.
Highlights
Boron (B) is required for all plant growth
Results showed increasing trends with increase in applied boron which indicated that boron has a positive effect on potassium concentration in tobacco leaf. This positive effect of boron on potassium in tobacco is a good indicator for good quality tobacco, because potassium enhances the smoking and ashing quality by increasing the burning quality of tobacco
Boron has a positive effect on potassium concentration in tobacco leaf
Summary
Boron (B) is required for all plant growth. Adequate B nutrition is critical for high yields and quality of crops. Deficiencies of B result in many anatomical, biochemical and physiological changes in plants. It is a widespread agricultural problem in the world, which results in yield and quality loss of many crop species including tobacco [1]-[5]. Boron cannot be redistributed rapidly within most species of plants; even a small interruption of nutrient supply from the soil may depress the growth and yield loss can occur. It is well defined that the chemistry of boron in soil and its role in plants are different from other elements, but its deficiency or toxicity can affect the solubility and availability of elements in soil [11] [12] and total uptake in plants body [13]-[16]
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