GENETIC PERFORMANCE OF FOUR SOYBEAN VARIETIES GROWING ON THE LAND POLLUTED BY FLY ASH SLUDGEHASAN BASRI JUMIN, ROSI YANDRA AND HERCULES GULTOM
Fly ash sludge was treated to soybean with 300 ppm/plant increased plant height, generative parameter, and to make earlier the firs flowering and harvest time. There are indications that soybean eight weeks after planting with 300 ppm / plant treated to four soybean varieties significantly increased the plant height from 86.17 cm into 95.0 cm for ijen variety, 89.67 cm into 91.33 cm for kaba variety, 96.83cm into 101.67 cm for tanggamus and 87.83 cm into 93.17 cm for anjasmoro. Dose of 300 ppm / plant treated to four soybean varieties significantly increased the average of seed weight 184.17 g into 191.25 g for ijen, 185,57 g into 188,83b for kaba, 214.13 g into 293.13 for Tanggamus and 148.50 g into 213.63cm for anjasmoro. Between four varieties tested that tanggamus registered a good genetic performance compared to other varieties. Fly ash is not only polluting the environment, but it could be also increased growth and production of seeds of four soybean varieties. Fly ash waste treated to soybean with suitable doses could increase growth and dry weight of seed. Fly ash is a fertilizer in low doses to plant and it could be used as fertilizers to save our environment.
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