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A field experiment, aimed to study the effect of plant growth regulators on growth, yield and quality traits of garlic (Allium sativum L.) Cv. Yamuna Safed" was carried out in Rabi season 2023-24 at the Instructional Farm, AKS University, Satna (MP). Result revealed that all the growth parameters viz. plant height, leaves length, neck thickness and collar diameter were observed maximum values when the crop was imposed to T5 (Gibberellic Acid @ 150 ppm) which was significantly superior over rest of the treatments. While control plot recorded the lowest values with respect to all above parameters. The crop stand was not significantly influenced due to application of plant growth regulators. The data on various yield parameters of garlic like equatorial and polar diameter of bulb, fresh bulbs yield, dry bulb weight, fresh bulb weight, fresh clove weight and marketable bulb yield were recorded maximum values under T5 (Gibberellic Acid @ 150 ppm) which was significantly superior over rest of the treatments whereas, minimum values of these parameters were observed when treatment was imposed to control plot at different period of observations. The quality parameters of garlic with respect to protein content, nitrogen content, total soluble solid (°Brix), vitamin C and oleoresin content of garlic were recorded the highest values of above parameters in application of T5 (Gibberellic Acid @ 150 ppm). On the other hand, the lowest values of above parameters recorded when plots were kept in control condition. The treatment T5 (Gibberellic Acid @ 150 ppm) had the highest fresh bulb yield and marketable garlic bulb yield (14.87 and 7.15 t ha-1, respectively) observed which was at par to T8 (indole-3–acetic acid @ 150 ppm). Conversely, the control plot had the lowest fresh and marketable bulb yield which was 10.93 and 5.25 t ha-1, respectively. The maximum gross return, net return and benefit-cost ratio recorded when treatment imposed to T5 (Gibberellic Acid @ 150 ppm) (Rs 715053, Rs 526553 ha-1 and 1:3.79), respectively. Likewise the minimum gross return, net return and benefit-cost ratio were recorded in control with (Rs 525189, 340189 ha-1 and 1:2.84), respectively.
Sahu et al. (Mon,) studied this question.