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VERMIKOMPOS DAN KANDUNGAN LOGAM BERAT TANAMAN

VERMIKOMPOS  DAN KANDUNGAN LOGAM BERAT TANAMAN

 

Aplikasi limbah di bidang pertanian adalah metode yang paling sederhana dari manajemen limbah . Kandungan bahan organik dan anorganik yang beracun adalah penghalang untuk manajemen limbah tersebut . Perhatian khusus harus diberikan pada kandungan logam berat yang kehadirannya dalam limbah dan kemudian ke  tanah menimbulkan bahaya bagi tanaman , hewan dan manusia .

Penelitian ini bertujuan untuk mengetahui pengaruh vermicomposts yang dibuat dari limbah industri penyamakan kulit  terhadap pengembangan sistem akar dan biomassa tanaman serta konsentrasi logam berat dalam organ-organ tanaman ini .

Pada tahun pertama setelah aplikasi vermicomposts ,  efeknya terhadap peningkatan biomassa jagung adalah sama dengan perlakuan pupuk kandang,  tetapi secara signifikan lebih buruk daripada pemupukan dengan pupuk mineral .

Pengaruh pupuk vermicomposts terhadap peningkatan biomassa tanaman dan akar  bunga matahari dan gandum adalah sebanding dengan efek pupuk kandang ,  tetapi lebih baik daripada pemupukan mineral (pupuk anorganik).

Konsentrasi logam berat pada tanaman sanbat beragam , dalam tanaman yang diperlakukan dnegan kascing,  ternyata kandungan logam beratnya lebih rendah daripada di tanaman yang  diperlakukan dnegan pupuk anorganik atau pupuk kandang . Logam berat yang diserap tanaman ternyata diakumulasikan dalam akar ,  sedangkan kandungan kromium yang sangat tinggi dalam vermicomposts tidak menyebabkan akumulasi Cr yang berlebihan dalam tanaman .

 

Sumber:   K. Gondek, B. Filipek-Mazur. 2003. Biomass yields of shoots and roots of plants cultivated in soil amended by vermicomposts based on tannery sludge and content of heavy metals in plant tissues.  PLANT SOIL ENVIRON., 49, 2003 (9): 402–409

 

 

 

 

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