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Abstrak :
This book begins with an introduction on sustainable potato production and global food security, and then presents eight case studies selected globally and covering different issues relevant to sustainable potato production in both developed and developing countries.

Abstrak :
In Otonomi Daerah (OTDA) era, Regional government efforts to look for regional potency in order to increase Pendapatan Asli Daerah (PAD). Potato in Merangin Regency has given a significant contribution in Merangin?s PDRB. Supply response and input demand by potatoes? farmers in Jangkat District Merangin Regency was estimated by using profit function. The objective of this study is to analyze supply response on potatoes? farmers. Research was conducted in three villages, Kayu Aro Jangkat district Merangin Regency in 2005. The result showed that farmers do maximize their profit in short term and response to price changing efficiently. Potato?s supply elasticity with considering its price was closed to one.

Abstrak :
Ubi ungu mempunyai senyawa antosianin yang merupakan suatu antioksidan. Sifat ubi ungu yang ramah lingkungan, murah, dan mudah didapat menjadikan ubi ungu berpotensial untuk menjadi salah satu inhibitor untuk menggantikan inhibitor lain yang bersifat tidak ramah lingkungan dalam lingkungan NaCl 3,5% pada lembaran baja karbon rendah. Metode kehilangan berat digunakan dalam penelitian kali ini, dengan menggunakan variasi lama waktu pengujian (3,6,9, dan 12 hari) dan penggunaan inhibitor X sebanyak 2 ml. Hasil yang didapat cukup baik dimana efisiensi tertinggi didapat pada waktu pengujian 9 hari dengan efisiensi 37,16%.

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Anthocyanin from sweet potatoes acts as an antioxidant, the caracteristics of antosianin which is environmental friendly, inexpensive, and easy to get makes sweet potatoes very potential to become one of an organic inhibitor to replace other inhibitor that are not environmental friendly in 3.5% NaCl environment at low carbon steel plate. Weight loss method used in this study, using a variety of testing time (3,6,9, and 12 days) and the use of inhibitors X is 2 ml. The result is good enough where the highest efficiency obtained at the time of testing 9 days with 37.16% efficiency.