Abstract
A field experiment was conducted at Pandit Jawaharlal Nehru College of Agriculture and Research Institute, Karaikal to study the effect of plant growth regulators on yield and nutrient uptake of sesame (Sesamum indicum L.) during summer 2021. The field experiment with thirteen treatments was conducted on a loamy sand soil in a randomized block design and replicated thrice. The treatments included four plant growth regulators at various concentrations (NAA 50 ppm, NAA 100 ppm, CCC 100 ppm, BA 5 ppm and HA 500 ppm) and water spray at two levels of application (one spray - at flowering stage and two sprays - at flowering and capsule formation stages) and an unsprayed control. The results revealed that spraying NAA 100 ppm twice recorded the highest seed yield (633 kg/ha), haulm yield (1296 kg/ha) as well as the uptake of NPK by sesame when compared to other growth regulators.
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