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Logam Berat sebagai Polutan dan Efek Sampingnya terhadap Mikroorganisme Tanah
(Kopertis Wilayah I Nanggroe Aceh Darussalam (NAD) – Sumatera Utara, 2006-08)
A literature study is done to find out the role of heavy metals as a kind of pollutants in the environment and their side effect to soil microorganisms.
The study shows that microorganisms are involved in many important ...
Pengelolaan Hara Padi pada Tanah Sawah demi Peningkatan Efisiensi Pupuk
(Universitas Katolik Santo Thomas Sumatera Utara, 2006-09)
The problem in soil fertilizing today is the low fertilizer efficiency. The attempt to raise the fertilizer efficiency is done especially by improving the agronomical techniques, as in the agronomy of paddy rice.
Fertilizer ...