The Effects of Two Organic Soil Amendments, Biochar and Insect Frass Fertilizer, on Shoot Growth of Cereal Seedlings.

Response of Four Cereals to a Combination of HexaFrassTM and Biochar In the trials investigating how HF and biochar might interact in their effects on plant growth, adding 4 g of HF per pot had highly significant effects (F 1,28 > 60; p < 0.001) on the shoot dwt of all four cereal species ( Figure 3 ).

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