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Research Article
Influence of Growth Regulators and Their Time of Application on Yield of Onion

Md. Abdul Hye, Md. Shahidul Haque and M. Abdul Karim

Pakistan Journal of Biological Sciences, 2002, 5(10), 1021-1023.

Abstract

Application of gibberellic acid (GA3) and indoleacetic acid (IAA) increased the root number, root length and root weight, bulb diameter and bulb weight of onion. The highest bulb diameter and bulb weight was found at 200 ppm each of GA3 and IAA. Better increase in bulb diameter and bulb weight was achieved by the double dose than single dose. Application of GA3 and IAA increased the bulb yield. The highest bulb yield (15.57 t ha -1) was observed at 200 ppm GA3 followed by 200 ppm of IAA (15.53 t ha -1). In conclusion, the yield contributing characters and yield of onion could be manipulated by the application of GA3 and IAA.

ASCI-ID: 1-2489

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