Gempa & Tsunami Jepang

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Pengertian Hama

Berhubungan dengan Lab. DPT (Dasar Perlindungan Tanaman) yang dijalani di USU, maka sesuai dengan yang didapat dari pembelajaran di laboratorium tersebut saya ingin berbagi sedikit mengenai ilmu yang saya dapat mengenai hama. Walaupun masih hanya pengertian,semoga saja ini cukup membantu sedikit untuk memperdalam ilmu bagi anda sekalian . .1. Menurut Nas (1978) bahwa serangga dikatakan hama apabila serangga tersebut mengurangi kualitas dan kuantitas bahan makanan, pakan ternak, tanaman serat, hasil pertanian atau panen, pengolahan dan dalam penggunaannya serta dapat bertindak sebagai vektor penyakit pada tanaman, binatang dan manusia, dapat merusak tanaman hias , bunga serta merusak bahan bangunan dan milik pribadi lainnya.2. Dalam Pengendalian Hama Terpadu bahwa hama bukan...

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What is NIGHT SOIL . . ?

Night soil is a euphemism for human excrement collected at night from cesspools, privies, etc. and sometimes used as a fertilizer. Night soil is produced as a result of a waste management system in areas without community infrastructure such as a sewage treatment facility, or individual septic disposal. In this system of waste management, the human feces are collected in solid form.why it's said night soil . ?This land is said like this because in essence this land is land that comes from the collection of land that has been mixed with human feces.It was said tonight because of mixing soil and feces than was done at night.indeed, if viewed from the meaning that is so simple, people probably would not believe.additional science bitWhere is the best manure between chicken manure, goat or pig....

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