HUBUNGAN KERUSAKAN TANAH DAN NERACA HARA SEBAGAI INDIKATOR PERTANIAN BERKELANJUTAN*)

(RELATION OF SOIL DEGRADATION TO NUTRIENT BALANCE AS

AN INDICATOR OF SUSTAINABLE AGRICULTURE)

 

Riyo Samekto**)

 

Abstracts

 

Soil degradation and nutrient balance  are important for ecological nutrient management in sustainable agriculture. Soil degradation in term of soil erosion is the single most important environmental concern in the developing countries. Eroded sediment also acts as both a physical and chemical pollutant. It has been become an ecological, social and economic problem. Loss of nutrient by erosion from agricultural areas in a sloping land is one of the major causes of land degradation in Indonesia, yet the process by which the nutrient is depleted has often not been answered by appropriate study. To relate soil degradation to nutrient balance becomes important tool for monitoring sustainable agriculture.

 

Key words: soil degradation, nutrient balance, sustainable agriculture, ecological nutrient management, sustainability indicator

*) Artikel di Jornal JOGLO Vol. 23 No. 1, Juli 2011. ISSN: 0215-9546

**) Dosen Fakultas Pertanian UNISRI Surakarta

Selengkapnya: artikel joglo_riyo samekto

NERACA HARA NITROGEN SEBAGAI INDIKATOR PERTANIAN BERKELANJUTAN

(Nitrogen balance as an indicator sustainable agriculture)

 

Riyo Samekto

 

Abstracts

 

 

Sustainable agriculture is the continuous production of food and fibre into the future while conserving the health of natural resources on and off the farm. It is important to find indicator as a tool to monitoring sustainability. There are two main methods of budgeting the nutrients balance of regional and national agricultural systems: soil-surface and farm-gate. The purpose of the paper is to discuse the importance of nitrogen balance as an indicator of agricultural sustainability and to propose the methods expalined by Viet-Ngu and Aluddin  (2009) as an alternative way to solve the defference of the two main methods.

 

Key words: Sustainable agriculture, nitrogen balance, farm gate balance, soil surface balance.

Selengkapnya:NERACA HARA NITROGEN SEBAGAI INDIKATOR PERTANIAN BERKELANJUTAN

Sebelum melakukan pemupukan, lebih baik terlebih dulu meng­gunakan kunci identifikasi gejala defisiensi hara agar dapat memban­tu menentukan kebutuhan pupuk yang akan diberikan pada tanaman. Kunci identifikasi mudah dipelajari dengan sedikit bekal pengetahuan struktur tumbuhan.

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