| 摘要 |
A weed controlling agent is provided to be constituted by natural materials for organic farming of agricultural products by excluding the use of materials generating environmental hormones causing various side effects on an organism. A weed controlling agent comprises 35-70 wt.% of potassium humate and 30-65 wt.% of at least one ingredient selected from the group consisting of elvan, loess, rice bran, calcium hydroxide and vermiculite. An organic farming method comprises a step of spraying 100-150 kg of the weed controlling agent to 300 pyeongs' of paddy rice field and ordinary fields. |
