Effect of Potassium and Gibberellic Acid on the Growth and Yield of Cowpea (Vigna unguiculata L.)

The field experiment was transported at experimental field of the Crop Research Farm, Department of Agronomy, Naini Agricultural Institute, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, Uttar Pradesh, India. The soil of exploratory field is Sandy earth in texture, almost noncommittal in soil reaction (pH 7.1), depressed not living carbon (0.36%) usable N (171.48 kg/ha), available P (27.0 kg/ha) and K (291.2 kg/ha). The Experiment was spent money in Randomized Block Design accompanying nine treatments and individual control plot copied thrice on the basis of individual period experimentation. To decide the Effect of Potassium and Gibberellic Acid on the development and yield of Cowpea (Vigna unguiculata L.). The treatments comprised three levels of Potassium – 20 kg/ha, 25 kg/ha and 30 kg/ha and three levels of Gibberellic acid spray – 100 ppm, 120 ppm and 150 ppm. The results showed that situation accompanying the application of Potassium – 30 kg/ha + GA3 - 100 ppm was written considerably higher Plant altitude (68.8 cm), no. of growth/plant (40.9), dry weight (39.32 g). Whereas, maximum Number of pods per plant (16.94), sources per pod (13.46), seed index (18.36 g), greater source yield (1459.70 kg/ha) and Haulm yield (2952.30 kg/ha).

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