Perubahan Lingkungan Fisik Tanah Sawah Dengan Penambahan Bahan Organik Pada Berbagai Cara Pemberian Air
Abstract The problem faced by the flooded rice field are the deficiency of nitrogen, phosphorus and potassium, the toxic of Fe, Mn, Al, and Bo to plant. When the puddled soil are dried the structure of soil becomes massive. Hard consistency caused the roots of crop do not able to penetrate the soil....
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[Yogyakarta] : Universitas Gadjah Mada
1998
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