Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Paul R. Hepperly"'
Autor:
Ricardo Goenaga, Paul R. Hepperly
Publikováno v:
The Journal of Agriculture of the University of Puerto Rico. 74:253-260
Natural flowering and seed set in tanier (Xanthosoma spp.) is rare and limits improvement of the crop through hybridization. A study was conducted to induce uniform flowering with gibberelic acid (GA) in several species of Xanthosoma and to manually
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2cec052882a052f430e92e4cf73b5ba4
https://doi.org/10.46429/jaupr.v74i3.6657
https://doi.org/10.46429/jaupr.v74i3.6657
Autor:
Joseph Esnard, Paul R. Hepperly
Publikováno v:
European Journal of Plant Pathology. 101:497-501
In 1990–91, 96% of the test plants in a barley (Hordeum vulgare L.) winter nursery in Puerto Rico was lost toSclerotium rolfsii. Small necrotic lesions (1–3 mm long) developed at the base of the stem, followed by wilting and general chlorosis as
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b56eb2a87ab79334734f24643232f8f3
https://doi.org/10.1007/bf01874473
https://doi.org/10.1007/bf01874473
Autor:
Paul R. Hepperly
Publikováno v:
The Journal of Agriculture of the University of Puerto Rico. 75:233-240
Durante el verano de 1986 se realizaron experimentos de campo en la región semiárida del suroeste de Puerto Rico para determinar las pérdidas causadas por la roya en líneas de sorgo graníferos y forrajeros. Se utilizaron las líneas mejoradas pa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bfc2be3a47bef3ca964c13ca4b87c39
https://doi.org/10.46429/jaupr.v75i3.3591
https://doi.org/10.46429/jaupr.v75i3.3591
Publikováno v:
The Journal of Agriculture of the University of Puerto Rico. 75:125-137
Se encontraron altos niveles de infecciones por hongos que redujeron la germinación de semillas provenientes de siembras de junio en Honduras. Fusarium equiseti, con rango de incidencia de infecciones de 12 a 62%, fue el hongo predominante en esa é
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5ba4cab65cdf46d79dab404b1fcf7be
https://doi.org/10.46429/jaupr.v75i2.3575
https://doi.org/10.46429/jaupr.v75i2.3575
Autor:
Paul R. Hepperly
Publikováno v:
The Journal of Agriculture of the University of Puerto Rico. 74:37-44
Four sorghum lines of varying rust susceptibility, ranging from very resistant to susceptible, were planted in early September T985 in Isabela, Puerto Rico. Rust reactions were periodically evaluated from boot stage until grain harvest. At physiologi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec3de08702f41c5659b07e61da06f490
https://doi.org/10.46429/jaupr.v74i1.6526
https://doi.org/10.46429/jaupr.v74i1.6526
Publikováno v:
The Journal of Agriculture of the University of Puerto Rico. 74:1-13
Se llevo a cabo un estudio con dos híbridos de sorgo forrajero (ATx 623 X GL y FS25A) de abril de 1985 a febrero de 1987 en la Subestación Experimental Agrícola de Lajas para medir la influencia sobre la producción de etapas de corte cada 10 día
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5a0c01f4c5c7d1fa074f0921dcc517ca
https://doi.org/10.46429/jaupr.v74i1.6522
https://doi.org/10.46429/jaupr.v74i1.6522
Publikováno v:
The Journal of Agriculture of the University of Puerto Rico. 74:207-208
SYMPTOMATOLOGY AND CONTROL OF SCION DIEBACK IN GRAFT-PROPAGATED COCOA (THEOBROMA CACAO L.)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73921d5947641db80c148d661e96e127
https://doi.org/10.46429/jaupr.v74i2.6554
https://doi.org/10.46429/jaupr.v74i2.6554
Autor:
Paul R. Hepperly
Publikováno v:
The Journal of Agriculture of the University of Puerto Rico. 68:87-99
Nine soybean cultivars (Buffalo, Cobb, Davis, Hardee Late Selection, IAC- 2, Improved Pelican, Jupiter, Orba, and Ransom) were planted at 11 dates from February 15, 1979 to October 1, 1979. At harvest maturity, the purple stained seeds from each of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55b474f09a9cf7f8ce3c7a225760f7fa
https://doi.org/10.46429/jaupr.v68i1.7263
https://doi.org/10.46429/jaupr.v68i1.7263
Publikováno v:
The Journal of Agriculture of the University of Puerto Rico. 69:201-213
Kaki and 28-Bushy pigeon peas were grown in the southern plains of Puerto Rico, in four spatial arrangements with six intervals of weed competition during two growing seasons to determine the influence of weed competition on crop growth, development
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2727fc8a285213882cbd4170e75f06b9
https://doi.org/10.46429/jaupr.v69i2.7344
https://doi.org/10.46429/jaupr.v69i2.7344
Autor:
null Paul R. Hepperly
Publikováno v:
The Journal of Agriculture of the University of Puerto Rico. 72:65-71
La roya del sorgo causada por Puccinia purpurea Cooke causó pérdidas considerables en rendimiento de grano en 2 de 4 cultivares evaluadas en Isabela en 1985. Se establacieron diversas grados de severidad de la roya con diferentes fungicidas foliare
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5719eef92f77020ac4300bc71e9d630a
https://doi.org/10.46429/jaupr.v72i1.6835
https://doi.org/10.46429/jaupr.v72i1.6835