Author Details

Lugo-López, M. A.

• The Journal of Agriculture of the University of Puerto Rico Vol. 68 No. 2 (1984): Vol. 68, No. 2, April 1984 Articles
  Major Soils of Bella Unión Area in Northwestern Uruguay
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• The Journal of Agriculture of the University of Puerto Rico Vol. 69 No. 3 (1985): Vol. 69, No. 3, July 1985 Research Notes
  POTENTIAL OF SOME SMALL IRRIGATION SYSTEMS IN HAITI
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• The Journal of Agriculture of the University of Puerto Rico Vol. 65 No. 1 (1981): Vol. 65, No. 1, January 1981 Articles
  High Yields of Non-fertilized Protein-rich Pigeon Peas on Tropical Soils of Low Inherent Fertility of Puerto Rico: An Explanation of a Paradox
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• The Journal of Agriculture of the University of Puerto Rico Vol. 65 No. 1 (1981): Vol. 65, No. 1, January 1981 Research Notes
  WINGED BEANS AS A POTENTIAL FOOD AND GREEN MANURE CROP UNDER CONDITIONS IN PUERTO RICO
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• The Journal of Agriculture of the University of Puerto Rico Vol. 65 No. 2 (1981): Vol. 65, No. 2, April 1981 Research Notes
  OBSERVATIONS ON THE SOILS OF THE DEPARTMENT OF PANDO (BOLIVIA) AND THEIR PRODUCTIVE POTENTIAL
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• The Journal of Agriculture of the University of Puerto Rico Vol. 65 No. 3 (1981): Vol. 65, No. 3, July 1981 Articles
  A Practical and Simple Graphic Model to Appraise the Occurrence of Dry Spells in the Humid Tropics
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• The Journal of Agriculture of the University of Puerto Rico Vol. 65 No. 3 (1981): Vol. 65, No. 3, July 1981 Research Notes
  CACAO PRODUCTION ON WELL-DRAINED SOILS ALONG THE BANKS OF THE MAMORE RIVER ON NORTHEASTERN BOLIVIA
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• The Journal of Agriculture of the University of Puerto Rico Vol. 65 No. 4 (1981): Vol. 65, No. 4, October 1981 Articles
  Some Aquic Tropudalfs in the Vicinity of Villa Banzer and San Carlitos in Northeastern Bolivia
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• The Journal of Agriculture of the University of Puerto Rico Vol. 66 No. 4 (1982): Vol. 66, No. 4, October 1982 Research Notes
  K VALUES OF THE SOILS OF PUERTO RICO
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• The Journal of Agriculture of the University of Puerto Rico Vol. 64 No. 4 (1980): Vol. 64, No. 4, October 1980 Articles
  Tropeptic Haplustox: Major soils of the plains of Riberalta-Guayaramerin in northeastern Bolivia
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• The Journal of Agriculture of the University of Puerto Rico Vol. 64 No. 2 (1980): Vol. 64, No. 2, April 1980 Articles
  Updated Taxonomic Classification of the Soils of the U.S. Virgin Islands
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• The Journal of Agriculture of the University of Puerto Rico Vol. 61 No. 4 (1977): Vol. 61, No. 4, October 1977 Articles
  Response of Native White Beans, Phaseolus vulgaris, to Various N Levels in an Oxisol
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• The Journal of Agriculture of the University of Puerto Rico Vol. 61 No. 2 (1977): Vol. 61, No. 2, April 1977 Articles
  Performance of Oilseed Sunflower Cultivars in an Oxisol in Northwestern Puerto Rico
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• The Journal of Agriculture of the University of Puerto Rico Vol. 56 No. 3 (1972): Vol. 56, No. 3, July 1972 Articles
  Seasonal Changes in Soil and Air Temperature at Three Locations in Puerto Rico, 1963-67
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• The Journal of Agriculture of the University of Puerto Rico Vol. 54 No. 3 (1970): Vol. 54, No. 3, July 1970 Articles
  Correlation between the Rate of Water Intake of Tropical Soils at Hourly intervals to the 8th hour
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• The Journal of Agriculture of the University of Puerto Rico Vol. 53 No. 4 (1969): Vol. 53, No. 4, October 1969 Articles
  Attempts to Explain the Variability in the Cation-Exchange Capacity of Soils in Terms of Particle Size and Organic-Matter Levels
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• The Journal of Agriculture of the University of Puerto Rico Vol. 53 No. 3 (1969): Vol. 53, No. 3, July 1969 Articles
  Prediction of the Erosiveness of Puerto Rican Soils on a Basis of the Percentage of Particles of Silt and Clay When Aggregated
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• The Journal of Agriculture of the University of Puerto Rico Vol. 44 No. 1 (1960): Vol. 44, No. 1, January 1960 Articles
  Pore Size and Bulk Density as Mechanical Soil Factors Impeding Root Development
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• The Journal of Agriculture of the University of Puerto Rico Vol. 43 No. 4 (1959): Vol. 43, No. 4, October 1959 Articles
  Evaluation of the Effects of Organic Matter and Other Soil Characteristics Upon the Aggregate Stability of Some Tropical Soils
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• The Journal of Agriculture of the University of Puerto Rico Vol. 43 No. 4 (1959): Vol. 43, No. 4, October 1959 Articles
  Hydraulic Conductivity of Subsoils of Lajas Valley
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• The Journal of Agriculture of the University of Puerto Rico Vol. 42 No. 4 (1958): Vol. 42, No. 4, October 1958 Articles
  The Response of Hegari Sorghum to Lime Applications at Various Levels
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• The Journal of Agriculture of the University of Puerto Rico Vol. 41 No. 3 (1957): Vol. 41, No. 3, July 1957 Articles
  Lack of Response of Some Food Crops to the Application of Synthetic Soil Conditioners to A Clay Soil in Lajas Valley
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• The Journal of Agriculture of the University of Puerto Rico Vol. 41 No. 3 (1957): Vol. 41, No. 3, July 1957 Articles
  Effect of Lime and Soil Conditioners on Crop Yields and Soil Aggregation
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• The Journal of Agriculture of the University of Puerto Rico Vol. 41 No. 3 (1957): Vol. 41, No. 3, July 1957 Articles
  Effect of Soil-Structure Stabilizers on the Production of Tobacco Plants in the Seedbed
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• The Journal of Agriculture of the University of Puerto Rico Vol. 41 No. 2 (1957): Vol. 41, No. 2, April 1957 Articles
  Characterization of a Buried Latosol from Northern Puerto Rico
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• The Journal of Agriculture of the University of Puerto Rico Vol. 40 No. 4 (1956): Vol. 40, No. 4, October 1956 Articles
  Effects of Tractor-Traffic Compaction on the Physical Properties of an Irrigated Soil in Southwestern Puerto Rico
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• The Journal of Agriculture of the University of Puerto Rico Vol. 40 No. 2 (1956): Vol. 40, No. 2, April 1956 Articles
  Practical Evaluation of Garbage Compost as a Fertilizer under Conditions in Puerto Rico
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• The Journal of Agriculture of the University of Puerto Rico Vol. 40 No. 1 (1956): Vol. 40, No. 1, January 1956 Articles
  Differential Response of Some Tropical Soils to Additions of Organic Matter
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• The Journal of Agriculture of the University of Puerto Rico Vol. 38 No. 4 (1954): Vol. 38, No. 4, October 1954 Articles
  The Effect of Weather and Climate on the Sucrose Content of Sugarcane
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• The Journal of Agriculture of the University of Puerto Rico Vol. 38 No. 3 (1954): Vol. 38, No. 3, July 1954 Articles
  The Effect of Elevation on the Sucrose Content of Sugarcane
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• The Journal of Agriculture of the University of Puerto Rico Vol. 38 No. 3 (1954): Vol. 38, No. 3, July 1954 Articles
  The Effect of Soil Conditions on the Sucrose Content of Sugarcane
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• The Journal of Agriculture of the University of Puerto Rico Vol. 37 No. 3 (1953): Vol. 37, No. 3, July 1953 Articles
  Intercropping sugarcane with food crops
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• The Journal of Agriculture of the University of Puerto Rico Vol. 37 No. 3 (1953): Vol. 37, No. 3, July 1953 Articles
  The effect of filter-press cake on the physical and chemical properties of soils
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• The Journal of Agriculture of the University of Puerto Rico Vol. 37 No. 1 (1953): Vol. 37, No. 1, January 1953 Articles
  Factors affecting the sucrose content of sugarcane: III, varieties
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• The Journal of Agriculture of the University of Puerto Rico Vol. 37 No. 1 (1953): Vol. 37, No. 1, January 1953 Articles
  Failure of preharvest foliage sprays with 2, 4-d and maleic hydrazide to affect the sucrose content of sugarcane
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• The Journal of Agriculture of the University of Puerto Rico Vol. 36 No. 3 (1952): Vol. 36, No. 3, July 1952 Articles
  PREHARVEST FOLIAGE SPRAYS OF SUGARCANE WITH 2,4-D
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• The Journal of Agriculture of the University of Puerto Rico Vol. 36 No. 3 (1952): Vol. 36, No. 3, July 1952 Articles
  THE HANDLING OF SUGARCANE TRASH II. EFFECTS OF VARIOUS PRACTICES ON SOIL PROPERTIES
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• The Journal of Agriculture of the University of Puerto Rico Vol. 68 No. 1 (1984): Vol. 68, No. 1, January 1984 Research Notes
  EROSION ON THE HILLSIDES OF THE DOMINICAN REPUBLIC
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• The Journal of Agriculture of the University of Puerto Rico Vol. 65 No. 2 (1981): Vol. 65, No. 2, April 1981 Articles
  An Attempt to Evaluate the Effect of Varying Time Intervals Between Liming and Cropping on an Oxisol
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• The Journal of Agriculture of the University of Puerto Rico Vol. 65 No. 3 (1981): Vol. 65, No. 3, July 1981 Articles
  Mineralization of Organic P in an Ultisol
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• The Journal of Agriculture of the University of Puerto Rico Vol. 67 No. 2 (1983): Vol. 67, No. 2, April 1983 Research Notes
  EXPLORATORY TESTS ON POSSIBLE INJURIOUS AFTER EFFECTS OF PIGEON PEAS ON SUBSEQUENT CROPS
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• The Journal of Agriculture of the University of Puerto Rico Vol. 67 No. 3 (1983): Vol. 67, No. 3, July 1983 Research Notes
  Anthills in Sugarcane Fields of Northwestern Uruguay
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• The Journal of Agriculture of the University of Puerto Rico Vol. 64 No. 4 (1980): Vol. 64, No. 4, October 1980 Articles
  Differential Response of Corn and Sweet Potatoes to Zn Applications in an Oxisol in Northwestern Puerto Rico
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• The Journal of Agriculture of the University of Puerto Rico Vol. 64 No. 2 (1980): Vol. 64, No. 2, April 1980 Articles
  Yield Response of Cassava (Manihot esculenta Crantz) to One and Two Banded Fertilizer Applications on a Limed Guyana Peaty Clay Soil
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• The Journal of Agriculture of the University of Puerto Rico Vol. 64 No. 2 (1980): Vol. 64, No. 2, April 1980 Articles
  Effect of Wire Supports on Pod Yield of Winged Beans (Psophocarpus tetragonolobus (L.) DC
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• The Journal of Agriculture of the University of Puerto Rico Vol. 64 No. 1 (1980): Vol. 64, No. 1, January 1980 Articles
  An Approach to Minimize Al Toxicity in Ultisols through Organic Matter Additions
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• The Journal of Agriculture of the University of Puerto Rico Vol. 63 No. 3 (1979): Vol. 63, No. 3, July 1979 Articles
  Influence of Cultivars, N levels and Time of N Application on Plant Characters, leaf Composition, and Yield of Corn Grown on an Oxisol
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• The Journal of Agriculture of the University of Puerto Rico Vol. 63 No. 1 (1979): Vol. 63, No. 1, January 1979 Articles
  The Effect of Soil pH and Related Acidity Factors on Yield of Plantains (cv Maricongo) Grown on Los Guineos Clay, an Ultisol
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• The Journal of Agriculture of the University of Puerto Rico Vol. 62 No. 4 (1978): Vol. 62, No. 4, October 1978 Articles
  Nitrogen Fertilization of Sorghum in an Oxisol in Northwestern Puerto Rico
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• The Journal of Agriculture of the University of Puerto Rico Vol. 62 No. 3 (1978): Vol. 62, No. 3, July 1978 Articles
  Effect of Depth of Lime Application on Yield of Two Corn Hybrids Grown on a Typical Ultisol of Puerto Rico
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• The Journal of Agriculture of the University of Puerto Rico Vol. 62 No. 3 (1978): Vol. 62, No. 3, July 1978 Articles
  Effect of Depth of Lime Application on Yield and Foliar Composition of Soybeans Grown on a Typical Ultisol of Puerto Rico
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• The Journal of Agriculture of the University of Puerto Rico Vol. 62 No. 2 (1978): Vol. 62, No. 2, April 1978 Articles
  Effect of Planting Distance on Yield and Agronomic Characteristics of Red Kidney and Native White Beans in an Oxisol
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• The Journal of Agriculture of the University of Puerto Rico Vol. 61 No. 1 (1977): Vol. 61, No. 1, January 1977 Articles
  Effect of Time of Sugarcane Harvest on Sucrose Content and Sugar Yield
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• The Journal of Agriculture of the University of Puerto Rico Vol. 60 No. 4 (1976): Vol. 60, No. 4, October 1976 Articles
  Effect of Four Levels of N, P, K, and Micronutrients on Sweetpotato Yields in an Oxisol
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• The Journal of Agriculture of the University of Puerto Rico Vol. 60 No. 4 (1976): Vol. 60, No. 4, October 1976 Articles
  Effect of Planting System and Partial Removal of the Epidermis of Cassava Cuttings on Growth Yields and Root Development
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• The Journal of Agriculture of the University of Puerto Rico Vol. 60 No. 4 (1976): Vol. 60, No. 4, October 1976 Articles
  Performance of Irish Potato Varieties in an Oxisol in Northwestern Puerto Rico
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• The Journal of Agriculture of the University of Puerto Rico Vol. 60 No. 1 (1976): Vol. 60, No. 1, January 1976 Articles
  Effect of Five Levels and Three Sources of N on Sweetpotato Yields on an Ultisol
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• The Journal of Agriculture of the University of Puerto Rico Vol. 54 No. 1 (1970): Vol. 54, No. 1, January 1970 Articles
  Sugarcane Production for 12-, 18-, and 24-Month Cycles Under Conditions in Puerto Rico
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• The Journal of Agriculture of the University of Puerto Rico Vol. 52 No. 1 (1968): Vol. 52, No. 1, January 1968 Articles
  On the Possible Significance of High Free Iron Oxide Content in Mabí Clay, a Vertisol from East-Central Puerto Rico
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• The Journal of Agriculture of the University of Puerto Rico Vol. 45 No. 2 (1961): Vol. 45, No. 2, April 1961 Articles
  Use of Allyl Alcohol as a Pre-emergent Weedkiller in Coffee Seedbeds
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• The Journal of Agriculture of the University of Puerto Rico Vol. 46 No. 3 (1962): Vol. 46, No. 3, July 1962 Articles
  Losses of Sucrose in Cut Cane Kept under Shade or Sun for Different Periods
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• The Journal of Agriculture of the University of Puerto Rico Vol. 43 No. 2 (1959): Vol. 43, No. 2, April 1959 Articles
  Occurrence of Soil Tumors Northeast of the Guánica Lagoon, Lajas Valley, P.R.
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• The Journal of Agriculture of the University of Puerto Rico Vol. 42 No. 1 (1958): Vol. 42, No. 1, January 1958 Articles
  Effect of Lime and Phosphate-bearing Materials on Sugarcane Yields
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• The Journal of Agriculture of the University of Puerto Rico Vol. 42 No. 1 (1958): Vol. 42, No. 1, January 1958 Articles
  Observations on the Boron-Manganese Relationships in Soybean and Corn Plants
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• The Journal of Agriculture of the University of Puerto Rico Vol. 42 No. 4 (1958): Vol. 42, No. 4, October 1958 Articles
  Effects of the Calcium-Boron Relationship on Growth and Production of the Pineapple Plant
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• The Journal of Agriculture of the University of Puerto Rico Vol. 41 No. 3 (1957): Vol. 41, No. 3, July 1957 Articles
  Effect of Incorporating Organic Materials into A Clay Soil of Lajas Valley on the Yields of Food Crops
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• The Journal of Agriculture of the University of Puerto Rico Vol. 41 No. 2 (1957): Vol. 41, No. 2, April 1957 Articles
  The Effect of Synthetic Soil Conditioners on Soil-Aggregate Stability and the Production of Potatoes and Stringless Beans
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• The Journal of Agriculture of the University of Puerto Rico Vol. 38 No. 1 (1954): Vol. 38, No. 1, January 1954 Articles
  LEAVING SUGARCANE TRASH UNDISTURBED ON A LATERIC SOIL COMPARES FAVORABLY WITH CURRENTLY USED TRASH-DISPOSAL METHODS
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• The Journal of Agriculture of the University of Puerto Rico Vol. 38 No. 3 (1954): Vol. 38, No. 3, July 1954 Articles
  Lack of Residual Influence from Subsoil Fertilization of A Sugarcane Plant Crop upon the Succeeding Ratoon Crop
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• The Journal of Agriculture of the University of Puerto Rico Vol. 37 No. 3 (1953): Vol. 37, No. 3, July 1953 Articles
  The beneficial effect of filter-press cake on pineapple yields under field conditions
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• The Journal of Agriculture of the University of Puerto Rico Vol. 37 No. 1 (1953): Vol. 37, No. 1, January 1953 Articles
  Tillage tests: II, the beneficial effect of subsoil fertilization on sugarcane yields
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• The Journal of Agriculture of the University of Puerto Rico Vol. 37 No. 1 (1953): Vol. 37, No. 1, January 1953 Articles
  Effect of different quantities of velvetbean green manure on corn yields in Puerto Rico
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• The Journal of Agriculture of the University of Puerto Rico Vol. 69 No. 3 (1985): Vol. 69, No. 3, July 1985 Research Notes
  K VALVES OF THE SOILS OF THE ACUL WATERSHED IN HAITI
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• The Journal of Agriculture of the University of Puerto Rico Vol. 65 No. 2 (1981): Vol. 65, No. 2, April 1981 Articles
  Fertilizer for Sweet Pepper Under Drip Irrigation in an Oxisol in Northwestern Puerto Rico
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• The Journal of Agriculture of the University of Puerto Rico Vol. 65 No. 2 (1981): Vol. 65, No. 2, April 1981 Articles
  Variable Response of Food Crops to Banded and Broadcast Residual Fertilizer P on an Ultisol
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• The Journal of Agriculture of the University of Puerto Rico Vol. 65 No. 3 (1981): Vol. 65, No. 3, July 1981 Articles
  Potential of Stylosanthes guianensis as a Forage Crop in the Humid Mountain Region of Puerto Rico
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• The Journal of Agriculture of the University of Puerto Rico Vol. 63 No. 3 (1979): Vol. 63, No. 3, July 1979 Articles
  Response of Irish Potatoes to Various Levels of N and Time of N Application in an Ultisol
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• The Journal of Agriculture of the University of Puerto Rico Vol. 62 No. 4 (1978): Vol. 62, No. 4, October 1978 Articles
  Performance of Twenty Cassava Cultivars on Marginal Peats and Peaty Clays of Guyana
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• The Journal of Agriculture of the University of Puerto Rico Vol. 62 No. 4 (1978): Vol. 62, No. 4, October 1978 Articles
  Legume and Nonlegume Crop Residues as Sources of N in Oxisols and Ultisols
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• The Journal of Agriculture of the University of Puerto Rico Vol. 62 No. 1 (1978): Vol. 62, No. 1, January 1978 Articles
  An Evaluation of the Growth and Water Consumption Rate of Grain Sorghum (Sorghum bicolor) at Four Climatic Sites in the Tropics and Subtropics
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• The Journal of Agriculture of the University of Puerto Rico Vol. 61 No. 4 (1977): Vol. 61, No. 4, October 1977 Articles
  Utilization of N from Crop Residues in Oxisols and Ultisols
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• The Journal of Agriculture of the University of Puerto Rico Vol. 61 No. 2 (1977): Vol. 61, No. 2, April 1977 Articles
  Response of Soybeans Grown in an Ultisol to Residual Broadcast and Banded P Fertilizer
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• The Journal of Agriculture of the University of Puerto Rico Vol. 60 No. 4 (1976): Vol. 60, No. 4, October 1976 Articles
  Morphological, Mineralogical, and Physico-Chemical Characteristics of Some Dark Clay Soils of Puerto Rico
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• The Journal of Agriculture of the University of Puerto Rico Vol. 60 No. 3 (1976): Vol. 60, No. 3, July 1976 Articles
  Rooting Depth, Growth and Yield of Corn as Affected by Soil Water Availability in an Ultisol and an Oxisol
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• The Journal of Agriculture of the University of Puerto Rico Vol. 60 No. 3 (1976): Vol. 60, No. 3, July 1976 Articles
  Rooting Depth, Growth and Yield of Sorghum as Affected by Soil Water Availability in an Ultisol and an Oxisol
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• The Journal of Agriculture of the University of Puerto Rico Vol. 60 No. 3 (1976): Vol. 60, No. 3, July 1976 Articles
  Nitrogen Fertilization of a High Yielding White-Kernel Corn in Oxisols and Ultisols in Puerto Rico
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• The Journal of Agriculture of the University of Puerto Rico Vol. 57 No. 1 (1973): Vol. 57, No. 1, January 1973 Articles
  Effect of Harvesting Sugarcane at 12, 14, and 16 Months of Age Upon Yields at Isabela, P.R.
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• The Journal of Agriculture of the University of Puerto Rico Vol. 54 No. 1 (1970): Vol. 54, No. 1, January 1970 Articles
  Root Development of Acerola Trees as Affected by Timing
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• The Journal of Agriculture of the University of Puerto Rico Vol. 41 No. 3 (1957): Vol. 41, No. 3, July 1957 Articles
  Residual Effect of Filter-Press-Cake Applications on Pineapple Yields
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• The Journal of Agriculture of the University of Puerto Rico Vol. 42 No. 3 (1958): Vol. 42, No. 3, October 1958 Articles
  Lack of Response of Old Coffee Trees Grown in Alonso Clay To Lime and Phosphatic Fertilization
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• The Journal of Agriculture of the University of Puerto Rico Vol. 62 No. 1 (1978): Vol. 62, No. 1, January 1978 Articles
  Response of Plantains to Banded and Broadcast N and to P Applications at Planting and to Residual P on an Ultisol
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