Abstract: In the present study, the effect of different fly ash levels in soil
were observed on plant growth and yield of underground stem crops viz. potato,
onion and garlic. Plant growth and yield were increased significantly in 10 and
20% fly ash amended soils. However, in higher levels of fly ash (40, 60, 80 and
100%), plant growth and yield were reduced significantly. The suppressions in
plant growth and yield were maximum in 80% and 100% fly ash levels. In general,
when fly ash levels increased gradually, all the growth and yield parameters
declined gradually. In the present study, the ideal level of 20% fly ash was
found to be for the better plant growth and yield of potato, onion and garlic
crops.
