34 results on '"Wortmann, Charles S."'
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2. Irrigation well water: Essential nutrient contents and other properties
3. Barley and wheat nutrient responses for Shewa, Ethiopia
4. Lowland rice yield and profit response to fertilizer application in Rwanda
5. Simulation‐based Maize–Wheat Cropping System Optimization in the Midhills of Nepal
6. Sesame Sole Crop and Intercrop Response to Fertilizer in Semi‐Arid Niger
7. Short‐Term Impacts of Conservation Agriculture on Soil Physical Properties and Productivity in the Midhills of Nepal
8. Fertilizer Application Effects on Grain and Storage Root Nutrient Concentration
9. Cassava Yield and Economic Response to Fertilizer in Tanzania, Kenya and Ghana
10. Lowland Rice Nutrient Responses for the Guinea and Sudan Savannas of Nigeria
11. Multisite Evaluation of APEX for Water Quality: I. Best Professional Judgment Parameterization
12. Multisite Evaluation of APEX for Water Quality: II. Regional Parameterization
13. Aerial Interseeded Cover Crop and Corn Residue Harvest: Soil and Crop Impacts
14. Grain Sorghum Response to Reduced Tillage, Rotation, and Soil Fertility Management in Uganda
15. Residue Harvest Effects on Irrigated, No-Till Corn Yield and Nitrogen Response
16. Dry Soil Planting of Maize for Variable Onset of Rainfall in Ethiopia
17. Cultivation Effects on Organic Matter Concentration and Infiltration Rates of Two Creeping Bentgrass (Agrostis stoloniferaL.) Putting Greens
18. Sorghum Response to Fertilizer and Nitrogen Use Efficiency in Uganda
19. Maize Response to Fertilizer and Nitrogen Use Efficiency in Uganda
20. Irrigated Soybean Can Have a Small Response to Nitrogen Applied During Early Reproductive Growth
21. Skip‐Row Planting and Tie‐Ridging for Sorghum Production in Semiarid Areas of Ethiopia
22. Skip‐Row and Plant Population Effects on Sorghum Grain Yield
23. Tie‐Ridge Tillage for High Altitude Pulse Production in Northern Ethiopia
24. Residual Effects of Compost and Plowing on Phosphorus and Sediment in Runoff
25. Low Input Approaches for Soil Fertility Management in Semiarid Eastern Uganda
26. Nitrogen Response of Grain Sorghum in Rotation with Soybean
27. Nutrient and Chemical Characterization of Aging Golf Course Putting Greens: Establishment and Rootzone Mixture Treatment Effects
28. Corn Response to Nitrogen Rate, Row Spacing, and Plant Density in Eastern Nebraska
29. Phosphorus Runoff during Four Years following Composted Manure Application
30. Starter Fertilizer and Row Cleaning Did Not Affect Yield of Early‐Planted, No‐Till Grain Sorghum
31. Micro‐Basin Tillage for Grain Sorghum Production in Semiarid Areas of Northern Ethiopia
32. Tillage and Rotation Interactions for Corn and Soybean Grain Yield as Affected by Precipitation and Air Temperature
33. Plant Materials for Soil Fertility Management in Subhumid Tropical Areas
34. Contribution of Bean Morphological Characteristics to Weed Suppression
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