Rational budgeting approach as a nutrient management tool for mixed crop-swine farms in Korea

Abstract

Objective: Due to rapid economic return, mixed crop-swine farming systems in Korea have become more intensive. Intensive farming practices often cause nutrient surpluses and lead to environmental pollution. Nutrient budgets can be used to evaluate the environmental impact and as a regulatory policy instrument for nutrient management. This study was conducted to select a nutrient budgeting approach applicable to the mixed crop-swine farms in Korea and suggest an effective manure treatment method to reduce on-farm nutrient production. Methods: In this study, we compared current and ideal gross nutrient balance (GNB) approaches of Organisation for Economic Cooperation and Development and soil system budget (SSB) approach with reference to on-farm manure treatment processes. Data obtained from farm census and published literature were used to develop the farm nutrient budgets. Results: The average nitrogen (N) and phosphorus (P) surpluses were approximately 11 times and over 7 times respectively higher in the GNB approaches than the SSB. After solid-liquid separation of manure, during liquid composting a change in aeration method from intermittent to continuous reduced the N and P loading about 50% and 47%, respectively. Although changing in solid composting method from turning only to turning+aeration improved the N removal efficiency by 30.5%, not much improvement in P removal efficiency was observed. Conclusion: Although the GNB approaches depict the impact of nutrients produced in the mixed crop-swine farms on the overall agricultural environment, the SSB approach shows the partitioning among different nutrient loss pathways and storage of nutrients within the soil system; thus, can help design sustainable nutrient management plans for the mixed cropswine farms. The study also suggests that continuous aeration for liquid composting and turning+aeration for solid composting can reduce nutrient loading to the soil.

Development of a Real-Time Controlled Bio-Liquor Circulation System for Swine Farms: A Lab-Scale Study

“…The Korean swine manure management practice is quite different from other parts of the world due to its climate condition and limited land resources [32]. Swine manure in Korea must be demarcated to solid and liquid fraction and then composted before application to arable lands, or purified prior to discharge into the environment.…”

Balance Sheet Budgetting at Agricultural Enterprises

“…This category is interpreted differently by different scientists and economists. According to the definition of Reza A., Shim S., Kim S., Ahn S., Won S. and Ra C. [1], the enterprise budgets represent estimates of receipts (income), costs, and profits associated with the production of agricultural products. According to Anankina O., Danilochkin S. and Danilochkina N., the budgeting system at the enterprise is an organizational and economic complex represented by a number of special attributes (application of special carriers of administrative information -budgets), assignment of structural units to the status of business units (centers of financial responsibility), high level of decentralization [2].…”

Balance Budgeting of Agribusiness Enterprises

“…Budgeting performs the important duty of present charges optimization and directions of use of the received incomes for improvement of financiallyeconomic activity of enterprise in current and future periods (O. Moshkovska, S. Luchyk, Y. Manachynska, M. Kuzub) [1]. The budget of an agribusiness enterprise is an estimate of revenues (income), costs and profits associated with the production of agricultural products (A. Reza, S. Shim, S. Kim, S. Ahn, S. Won, C. Ra) [2].…”