Pengaruh Pemberian Limbah Cair Industri Tempe dan Mikoriza terhadap Ketersediaan Hara N dan P Serta Produksi Jagung (Zea mays L.) pada Tanah Inceptisol
Hapiza, Muhammad Riza
Marbun, Posma Mangasi Pintaria
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Tempe industry liquid waste contains several nutrients that can be absorbed by plant roots. Application of mycorrhiza with tempe industry liquid waste to maize simultaneously planted on Inceptisol is expected to increase nitrogen and phosphate available. The aim of this study was to examine the best concentration of tempe industry liquid waste and mycorrhiza dosage in increasing N and P availability in Inceptisol soil and maize producion. The experiment was conducted in the experimental fields of the Faculty of Agriculture USU ( ± 25 m asl) from March - July 2013 and using a randomized block design (RBD) with 2 factors and 3 replications. The first factor was concentration of liquid tempe industry waste (0, 20, 40 and 60 mL of tempe industry liquid waste tempe/100 mL of water) and the second factor was mycorrhiza dosage (0, 10 and 20g mycorrhiza/plant). The results showed that the tempe industry liquid waste increased the root dry weight of maize significantly. Application mycorrhiza affected the concentration of N on leaf significantly. The tempe industry liquid waste and mycorrhiza and its interaction were not significant effect on the parameters of the soil pH, C-organic, total-N soil, uptake of N, P-available, the concentration of P on leaf, uptake of P, population of microorganisms,degree of mycorrhiza infection, canopy dry weight of maize, weight of cobs, plant height and stem diameter. The best concentration of tempe industry liquid waste was 60% which increased the cob weight of the maize 1.15 to 1.25 times higher than the weight of cobs on the others concentration of tempe industry liquid waste or without application of tempe industry liquid waste.
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