ArticleBMC plant biology2025
Straight vs blended applications of IAA (Indole Acetic Acid) and Boron (B) for the improvement of crop productivity in maize (Zea mays L.).
Article in BMC plant biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundDue to the increasing human population and the decreasing availability of cultivated land, it has become a challenge to fulfill the demand of food. This challenge can only be obtained by achieving higher yield from limited cultivated land. To accomplish this, farmers are adopting various strategies such as the use of fertilizers, plant growth regulators, nutrient foliar sprays and higher yielding cultivars. Among these approaches, plant growth regulators and micronutrients are equally important for enhancing crop productivity as they are cost- effective, readily available and required in only low concentrations. Indole Acetic Acid (IAA) is a plant growth regulator that is widely used for enhancing crop growth and yield in various crops, whereas Boron (B) plays a crucial role for healthy development of crops. In previous studies,, individual (straight) applications of IAA and B have been extensively studied for various crops including maize but its combined (blended) application has not been reported that is revealing an important research gap.
methodsTo address this gap and the research question about the efficacy of blended IAA + B applications in maize, pot experiments were conducted at the University of Gujrat, Pakistan using two maize varieties i.e. Pak-Afgoi and Golden. There were six treatments of IAA and B (straight and blended) that were applied as foliar sprays after 21 days germination.
resultsFoliar applications of IAA and B have shown a significant improved in the growth and productivity of maize plants for straight and blended applications. The most pronounced improvements in morphological traits such as shoot length (65.66 cm), shoot and root fresh and dry weights, number of leaves, leaf area (629.66 cm
conclusionIn conclusion, the foliar applications of IAA combined with Boron (20 and 30 ppm) proved to be more effective than their individual applications (straight), suggesting that their synergistic effects can be utilized to enhance the morphological, physiological, enzyme activities contributing the productivity of maize.
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