References
- Anselin , L , Bongiovanni , R and Lowenberg-DeBoer , J . 2004 . A spatial econometric approach to the economics of site-specific nitrogen management in corn production . American Journal of Agricultural Economics , 86 : 675 – 87 .
- Härdle , W . 1990 . Applied Nonparametric Regression , New York : Cambridge University Press .
- Isik , M and Khanna , M . 2002 . Variable-rate nitrogen application under uncertainty: implications for profitability and nitrogen use . Journal of Agricultural and Resource Economics , 27 : 61 – 76 .
- Luh , L-H and Liao , Z-N . 2001 . An econometric assessment of the productivity consequences of low-input farming . Applied Economics Letters , 8 : 687 – 92 .
- Roberts , RK , English , BC and Mahajanashetti , SB . 2000 . Evaluating the returns to variable rate nitrogen application . Journal of Agricultural and Applied Economics , 32 : 133 – 43 .
- Sandmo , A . 1971 . On the theory of the competitive firm under price uncertainty . American Economic Review , 61 : 65 – 73 .
- USDA/NASS . 1996 . Agricultural Chemical Usage Survey, 1995, Field Crops Summary
- USDA/NASS . 1998 . Agricultural Prices Monthly: 1998 , National Agricultural Statistics Service .
- Xia , Y and Buccola , S . 2003 . Factor use and productivity change in the alcoholic beverage industries . Southern Economic Journal , 70 : 93 – 109 .
- Zellner , A . 1951 . An interesting general form for a production function . Econometrica , XIX : 188 – 9 .