Long-term fertilization has been recognized as a key factor controlling soil organic carbon (SOC) and crop yields at various scales. Therefore, the impact of long-term nutrient management on SOC contents, fractional distribution, C-mineralization, productivity under maize mono-cropping was investigated in present work. For this, typical black northeast China collected analysed to measure (OC) c...

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The influence of salinity on the response of the estuarine teleost, Tilapia guineensis fingerlings to acute toxic effects of inorganic nitrogen-phosphorus-potassium (NPK) (15: 15: 15) fertilizer was investigated using semi-static bioassay. The toxicity of NPK fertilizer was found to increase significantly with increase in the salinity level from 0.05 %. to 32.4 %o. The 96 hr LC50 value at salin...

in order to evalutate the efficieny of green and farmyard manure and biofertilizers either separated or integrated on nitrogen dynamics in soil, leaves and grains in corn (zea mays l.), an experiment was conducted at 2009 cropping season. experiment was arranged in split split plot based on randomized complete block design with three replicates. main plots were three levels of green manure (con...

Balanced use of micronutrients in soils is essential for optimized nutrient efficiency, environmental conservation and long-term sustainability agro-ecological systems. As a result, maintaining correct micronutrient levels the soil not only to meet plant needs maintain agricultural productivity but also avoid build-up. The present study aimed investigate effect application on yield sucrose cont...

To meet the increasing demand for wood and wood products, the Southern Hardwoods Laboratory is investigating silvicultural techniques such as fertilization. Sweetgum, water oak, and willow oak have responded to N and NPK on clay soils of the Mississippi River floodplain. Yellow-poplar growth has been improved by NPK fertilizers on eroded sites in the Silty Uplands, and in the greenhouse sycamor...

Look up at the stars and not down at your feet. Try to make sense of what you see, and wonder about what makes the universe exist. Be curious. Knowledge is relative to time and place, never absolute across time and space (Patton, 2002) Contents CONTENTS CONTENTS ABSTRACT LIST OF PAPERS