RESPONSE OF SOYBEANS TO LIMING ON ACID TROPICAL SOILSABRUNA F.1980; WORLD SOYBEAN RESEARCH CONFERENCE. 2/1979/RALEIGH NC; USA/GBR/CAN/AUS; BOULDER: WESTVIEW PRESS/LONDON: GRANADA/TORONTO: GRANADA/SYDNEY: GRANADA; DA. 1980; PP. 35-46; BIBL. 15 REF.Conference Paper

NITROGEN RATES IN SINGLE AND SPLIT APPLICATIONS AND YIELD OF FLOODED RICELOZANO JM; ABRUNA F.1981; J. AGRIC. UNIV. P. R.; PRI; DA. 1981; VOL. 65; NO 1; PP. 35-42; BIBL. 18 REF.Article

Potassium-supplying capacity of six upland Mollisols from Puerto-RicoABRUNA, F.1983, Vol 67, Num 4, pp 394-406Article

EFFECT OF PLANTING METHODS AND SEEDING RATES ON RICE YIELDSLOZANO JM; ABRUNA F.1982; J. AGRIC. UNIV. P. R.; PRI; DA. 1982; VOL. 66; NO 3; PP. 194-199; ABS. SPA; BIBL. 14 REF.Article

SEASON OF THE YEAR ON YIELDS OF SEVEN MEDIUM-GRAIN VARIETIES OF RICELOZANO JM; ABRUNA F.1982; J. AGRIC. UNIV. P.R.; PRI; DA. 1982; VOL. 66; NO 3; PP. 188-193; ABS. SPAArticle

EFFECT OF FIVE NITROGEN SOURCES APPLIED AT FOUR RATES TO PANGOLA GRASS SOD UNDER HUMID TROPICAL CONDITIONS = INFLUENCE DE CINQ FORMES ET QUATRE DOSES D'AZOTE SUR DES PRAIRIES DE DIGITARIA DECUMBENS EN CLIMAT TROPICAL HUMIDEFIGARELLA J; ABRUNA F; VICENTE CHANDLER J et al.1972; J. AGRIC. UNIV. PUERTO RICO; PUERTO RICO; DA. 1972; VOL. 56; NO 4; PP. 410-416; ABS. ESP.; BIBL. 12 REF.Serial Issue

EFFECT OF NITROGEN RATES, HARVEST INTERVAL AND CUTTING HEIGHTS ON YIELD AND COMPOSITION OF STAR GRASS IN PUERTO RICO = INFLUENCE DE LA DOSE D'AZOTE, DE L'INTERVALLE ENTRE RECOLTE ET DES HAUTEURS DE COUPE SUR LE RENDEMENT ET LA COMPOSITION DU CHIENDENTCARO COSTAS R; ABRUNA F; FIGARELLA J et al.1972; J. AGRIC. UNIV. PUERTO RICO; PUERTO RICO; DA. 1972; VOL. 56; NO 3; PP. 267-279; ABS. ESP.; BIBL. 12 REF.Serial Issue

CROP RESPONSE TO SOIL ACIDITY FACTORS IN ULTISOLS AND OXISOLS IN PUERTO RICO. VI. GRAIN SORGHUMABRUNA F; RODRIGUEZ J; SILVA S et al.1983; J. AGRIC. UNIV. P.R.; PRI; DA. 1983; VOL. 67; NO 1; PP. 28-38; ABS. SPA; BIBL. 16 REF.Article

EFFECT OF FOUR LEVELS OF CONCENTRATE FEEDING ON MILK PRODUCTION BY HOLSTEIN COWS GRAZING INTENSIVELY MANAGED TROPICAL GRASS PASTURES = EFFET DE QUATRE NIVEAUX D'ALIMENTATION A BASE DE CONCENTRES SUR LA PRODUCTION LAITIERE DE VACHES HOLSTEIN MISE SUR PATURAGES DE GRAMINEES TROPICALES EXPLOITES DE FACON INTENSIVECARO COSTAS R; VICENTE CHANDLER J; ABRUNA F et al.1972; J. AGRIC. UNIV. PUERTO RICO; PUERTO RICO; DA. 1972; VOL. 56; NO 2; PP. 97-103; ABS. ESPSerial Issue

Effects of soil acidity factors on yields and foliar composition of two rice varieties with supplementary overhead irrigationABRUNA, F; RIVERA, E.The Journal of agriculture of the University of Puerto Rico. 1984, Vol 68, Num 4, pp 413-422, issn 0041-994XArticle

EVAPOTRANSPIRATION WITH PLANTAINS AND THE EFFECT OF FREQUENCY OF IRRIGATION ON YIELDSABRUNA F; VICENTE CHANDLER J; IRIZARRY H et al.1980; J. AGRIC. UNIV. P.R.; PRI; DA. 1980; VOL. 64; NO 2; PP. 204-210; ABS. SPAArticle

COMPARISON OF HEAVILY FERTILIZED PANGOLAGRASS AND STARGRASS PASTURES UNDER HUMID TROPICAL CONDITIONS = COMPARAISON DE PATURAGES A DIGITARIA DECUMBENS ET CYNODON NIEM FUENSIS EN CONDITIONS TROPICALES HUMIDESCARO COSTAS RR; ABRUNA F; VICENTE CHANDLER J et al.1973; ARGON. J.; U.S.A.; DA. 1973; VOL. 65; NO 1; PP. 132-133; BIBL. 9 REF.Serial Issue

COMPARISON OF HEAVILY FERTILIZED PANGOLA AND STAR GRASS PASTURES IN TERMS OF BEEF PRODUCTION AND CARRYING CAPACITY IN THE HUMID MOUNTAIN REGION OF PUERTO RICO = COMPARAISON DES PATURAGES DE DIGITARIA DECUMBENS ET CYNODON DACTYLON, RECEVANT DES ENGRAIS A HAUTE DOSE, DU POINT DE VUE PRODUCTION DE VIANDE BOVINE ET CHARGE TOTALE DANS LA REGION MONTAGNEUSE HUMIDE DE PORTO RICOCARO COSTAS R; ABRUNA F; VICENTE CHANDLER J et al.1972; J. AGRIC. UNIV. PUERTO RICO; PUERTO RICO; DA. 1972; VOL. 56; NO 2; PP. 104-109; ABS. ESP.; BIBL. 6 REF.Serial Issue

PLANT NUTRIENT UPTAKE BY INTENSIVELY MANAGED PLANTAINS AS RELATED TO STAGE OF GROWTH AT TWO LOCATIONSIRIZARRY H; ABRUNA F; RODRIGUEZ J et al.1981; J. AGRIC. UNIV. P.R.; PRI; DA. 1981; VOL. 65; NO 4; PP. 331-345; ABS. SPA; BIBL. 11 REF.Article

EFFECTS OF TWO HEIGHTS AND THREE INTERVALS OF GRAZING ON THE PRODUCTIVITY OF A HEAVILY FERTILIZED PANGOLA GRASS PASTURE = EFFET DE DEUX HAUTEURS ET TROIS INTERVALLES DE PATURAGE SUR LA PRODUCTIVITE DE PATURAGES DE DIGITARIA DECUMBENS RECEVANT DES ENGRAIS A HAUTE DOSEVICENTE CHANDLER J; SILVA S; RODRIGUEZ J et al.1972; J. AGRIC. UNIV. PUERTO RICO; PUERTO RICO; DA. 1972; VOL. 56; NO 2; PP. 110-114; ABS. ESP.; BIBL. 4 REF.Serial Issue

Molasses distillery slops supply nitrogen and potassium fertilizer to flooded riceVICENTE-CHANDLER, J; ABRUNA, F; LOZANO, J et al.The Journal of agriculture of the University of Puerto Rico. 1984, Vol 68, Num 4, pp 395-403, issn 0041-994XArticle

Effect of season of the year on yields of several varieties of dry beans growing in two ecological regions of Puerto RicoLOZANO, J; RIVERA, E; ABRUNA, F et al.1983, Vol 67, Num 4, pp 379-385Article