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Showing 1 to 7 of 7 for “"Soils--Testing"”.
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Nitrogen and phosphorus fertilization for efficient corn production in Virginia
… N fertilizer, and applying P fertilizer to soils testing high to very high in plant-available P, can be inefficent. Experiments were conducted at several locations in Virginia to evaluate if band applications of N fertilizer are more efficient than surface broadcast applications, to …
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Development of Nitrogen rate Recommendations for No-till Dryland Grain Sorghum in Virginia
… applications of 130 kg of N ha-1 for soils testing high in mineral-N ( 50 kg N ha-1 in the top 0.3m of surface soil) at planting, and a starter-band-N supplement of 40 kg N ha-1 in conjunction with 130 kg N ha-1 side-dress N for soils testing low in mineral-N at planting, optimized the …
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A procedure for laboratory seedbed tests with undisturbed soil
Thesis (M.S.)--Michigan State University, Dept. of Agricultural Engineering, 1964
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Salinity, radon, and radon precursors in the soils of Grand Forks County, North Dakota
… equivalent uranium (eU) concentrations than soils of lesser salinity. This study examined relationship between soil salinity, radon precursors, radon, and radon progeny in Grand Forks County, North Dakota. </p><p>Approximately 75 soil-gas samples collected in Grand Forks County were analyzed …
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Diffusive gradients in thin films (DGT) as a technique to predict nutrient availability to plants
The soils of Australia have extensive macro and micronutrient disorders varying greatly in their capacities to provide the chemical nutrients essential for plant growth. Assessment of nutrient availability in soils is important in order to maximise fertilizer efficiency and crop yields and to …
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Optimizing nutrient availability for high-yield corn production
… attained from P fertilizer applications despite soils testing high in P. Further analysis of nutrient levels within the plants confirmed how fertilizer management can affect the availability of nutrients to the plant. The results of this research may serve as a guide for corn producers interested …
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Għadira sands as compared to normally consolidated deposits at Marsa (Ta’ Ċeppuna) : using static triaxial tests
… compression tests were performed on these soils, at three different confining pressures, ranging from 55 to 1200kPa for clean sands, and 200 to 800kPa for the alluvial deposits. The behaviour of clean sands was observed to follow the Critical state Framework, for which such sands tend to …