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Environmentally Adjusted Agricultural Productivity in the Great Plains

Rezek, Jon P.; Perrin, Richard K. - In: Journal of Agricultural and Resource Economics 29 (2004) 02

discharge of pesticide and nitrogen effluents into the environment. The agricultural-environmental technology is approximated …

Persistent link: https://www.econbiz.de/10005525416

Quantifying the yield of perennial grasses grown as a biofuel for energy generation

Christian, D.G. - In: Renewable Energy 5 (1994) 5, pp. 762-766

Combustible biomass fuels may be produced on set-aside land by growing crops that produce a heavy yield of dry matter. Two promising candidate species are Miscanthus and Switchgrass. Establishment of both species was slow and weeds may cause problems. Yields were low because of the short growing...

Persistent link: https://www.econbiz.de/10010804788

Productivity and Economics of Sorghum Varieties for Grain As Influenced By Nitrogen Levels in Sandy Loam Soil

Namoobe, Cleto; Nanwal, R.K.; Kumar, Pawan - In: International Journal of Natural Sciences Research 2 (2014) 1, pp. 5-11

. Four varieties (HC 541, HC 308, HC 171 and HJ 513) and five nitrogen levels (0, 40, 60, 80 and 100 kg N ha-1) were taken in … the main plots and subplots, respectively. Data collected revealed that varieties and nitrogen levels has a significant …) and grain yield (1949 and 1938 kg ha-1) in both the years. The overall economic optimum nitrogen rate (EONR) was found to …

Persistent link: https://www.econbiz.de/10010769091

An inversed Bayesian modeling approach for estimating nitrogen export coefficients and uncertainty assessment in an agricultural watershed in eastern China

Lu, Jun; Gong, Dongqin; Shen, Yena; Liu, Mei; Chen, … - In: Agricultural Water Management 116 (2013) C, pp. 79-88

nitrogen (TN) export coefficients for farmland, residential land and woodland for six catchments of the ChangLe River watershed …

Persistent link: https://www.econbiz.de/10010594547

CASIMOD’N: An agro-hydrological distributed model of catchment-scale nitrogen dynamics integrating farming system decisions

Moreau, Pierre; Ruiz, Laurent; Vertès, Françoise; … - In: Agricultural Systems 118 (2013) C, pp. 41-51

Nitrogen), which assesses effects of farming systems on nitrogen (N) dynamics at the catchment level. Its main innovation is …

Persistent link: https://www.econbiz.de/10010664079

Effects of Long Term Cropping Systems on Soil Chemical Properties

Mazarura, U.; Chisango, C. - In: Asian Journal of Agriculture and rural Development 2 (2012) 4, pp. 632-640

In this study we examined the impact on soil C, total soil N and available P of six rotations namely: long season tobacco cultivar ‘KM10’ grown continuously (ContKM10), medium season tobacco cultivar ‘RK8’ grown continuously (ContRK8), grass-grass-grass-KM10 (G-G-G-KM10),...

Persistent link: https://www.econbiz.de/10010617689

Identifying irrigation and nitrogen best management practices for sweet corn production on sandy soils using CERES-Maize model

He, Jianqiang; Dukes, Michael D.; Hochmuth, George J.; … - In: Agricultural Water Management 109 (2012) C, pp. 61-70

. saccharata) production to reduce the amount of nitrogen (N) leaching. The objective of this study was to identify irrigation and … nitrogen BMPs for sweet corn production on sandy soils in Florida using the calibrated CERES-Maize model of the Decision …

Persistent link: https://www.econbiz.de/10010572974

Nitrogen use and the effects of nitrogen taxation under consideration of production and price risks

Finger, Robert - In: Agricultural Systems 107 (2012) C, pp. 13-20

Production and price risks affect optimal nitrogen use as well as the effects of nitrogen taxation if farmers’ risk … aversion is taken into account. We apply a bio-economic model to investigate the influence of risk aversion on nitrogen use in … of changes in these sources of risks on optimal levels of nitrogen use and its influence on the effects of nitrogen …

Persistent link: https://www.econbiz.de/10010576180

Extending results from agricultural fields with intensively monitored data to surrounding areas for water quality management

Heilman, P.; Malone, R.W.; Ma, L.; Hatfield, J.L.; … - In: Agricultural Systems 106 (2012) 1, pp. 59-71

A 45% reduction in riverine total nitrogen flux from the 1980–1996 time period is needed to meet water quality goals in … the Mississippi Basin and Gulf of Mexico. This paper addresses the goal of reducing nitrogen in the Mississippi River … nitrogen loading from tile drained agriculture using a simulation model and expert review. Second, information about the net …

Persistent link: https://www.econbiz.de/10010576186

Nitrogen conversion during rapid pyrolysis of coal and petroleum coke in a high-frequency furnace

Yuan, Shuai; Zhou, Zhi-jie; Li, Jun; Wang, Fu-chen - In: Applied Energy 92 (2012) C, pp. 854-859

induction coil heated and had a very small high-temperature zone, which could restrain secondary conversions of nitrogen … products. The effects of temperature and coal rank on conversions of fuel-N to primary nitrogen products (char-N, HCN–N, NH3–N …

Persistent link: https://www.econbiz.de/10010576302