gaqforms.blogg.se - Definisi ilmu ukur tanah

1) Match use and management of land to soil capability, because improper use of a soil can damage it and the ecosystem.

Simple clod test: Healthy soil, at left, holds together in water, while poor soil falls apart.

Or look at how well the soil “Holds Together”.

Or Look at the state of the soil organisms in the soil.

measuring various key attributes of soil organic matter quantity and quality will give an indication of the health of the soil.

Measuring SOM is one step in assessing overall soil quality or soil health.

It will help your bottom line as well as the soil.” – Ray Weil – Univ of Maryland BOT = Kesehatan Tanah “If your soil clods can't pass the water test, change your management practices.

Membantuinfiltrasi air hujandanudarakedalamtanah.

Coates the sand, silt, clay particles making them dark and the darker the color, the greater the amount of soil humus present.

humus decomposes at the rate of 2.5% per year.

provides some nutrients (N & P) as it is slowly decayed by microbial activity,.

sticks together & helps establish and maintain a strong crumb structure & thus reduce soil erosion.įungsi BOT Fungsi & Peranan Bahan Organik Tanah (Soil Organic Matter).Hubunganantara Pembangunan BerkelanjutandenganManajemen Tanah Berkelanjutan(Redrawn from Dumanski 1997) Sumber: Komponen-komponendariSistemManajemen Tanah-Berkelanjutan Sumber: General flow of the sequential SOM fractionation procedure. Steps in the cycling of soil C and the formation of soil organic matter and humus. Source: Adapted from Schlichting, Blume and Stahr, 1995. Hingga 15% dari BO beruparesidusegar (biasanya 6, add 1.0 to value.Gula & Pati (1-5% ) Hemiselulose 10-30% Selulose 20-50% SUSUNAN UNSUR Hidrat Arang 60% Protein 10% Lignin 20-30% Karbon 44% Hidrogen 8% Abu 8% Oksigen 40% Lemak, lilin, tanin 1-8%.īAHAN ORGANIK TANAH BO)T mencakupsemuakomponenorganikdaritanah: SUSUNAN BAHAN TUMBUHAN YG DITAMBAHKAN KE TANAH AIR 75% Padatan 25%. SUSUNAN JARINGAN TUMBUHAN Air 75% Padatan 25% Karbon 11% Oksigen 10% Hidrogen 22% Abu 2% Limited irrigation (fossil fuels burned to power irrigation) īAHAN ORGANIK TANAH KANDUNGAN, JENIS-JENIS, KARAKTERISTIKNYAīENTUK-BENTUK KARBON DALAM TANAH BAHAN ORGANIK TANAH.Limited used of N fertilizer (C released during N fertilizer manufacture).No-till agriculture or organic agriculture.PenangkapanKarbonoleh Tanah dapatditingkatkandengancara: Sekitar 75% daricadangankarbondidaratanberupa BOT.Tanah menangkapkarbondanmenyimpandalambentuk BOT danminerqalkarbonat.SIKLUS KARBON Tanaman CO2 Hewan Pupuk Kandang Reaksi dalam Tanah Aktivitas Mikroba CO2 Kehilangan drainage CO2, senyawa karbonat dari K, Ca, Mg, dll.

DASAR ILMU TANAH BAHAN ORGANIK TANAH Oleh: Soemarno JURUSAN TANAH FPUB NOP.