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Occurrence and characterization of Mn nodules in a Toposequence at Coloso valley agricultural reserve
(2010)
Manganese (Mn) nodules are sedimentary rocks, generally spherical or irregularly round in shape with concentric layers formed from manganese and iron mineral precipitation. These are redoximorphic features in soils with ...
Parámetros de fertilidad, calidad y potencial agrícola de los suelos de Vieques.
(2020-05-29)
Soil fertility is the capacity of the soil to provide the necessary nutrients for plant growth. Soil quality is the ability of a specific soil to function within the limits of a natural ecosystem or treated to sustain the ...
Nitrogen retention and movement in a variable charge
(2005)
A study was conducted to evaluate the effect of lime application and frequency
of N fertigation on NH4
+
and NO3
-
concentrations on Coto clay. Two field experiments
were established at Isabela, PR, one in March, ...
Physicochemical and mineralogical characterization of four Spodosols profiles in northern Puerto Rico
(2018-12)
Spodosols are a soil order with clearly distinct soil profile that have a dark surface horizon of organic origin, a bleached, eluvial E horizon, and a reddish, brownish or blackish B horizon, illuvial in nature enriched ...
Organic matter and exchangeable aluminum interactions in soils cultivated with coffee (Coffea arabica)
(2007)
Cuatro suelos ácidos de Puerto Rico fueron evaluados para determinar la cantidad de Al3+ extraíble utilizando soluciones de 1 M KCl, 0.33 M LaCl3 y 0.5 M CuCl2. Los suelos evaluados fueron Alonso (Oxic Dystrudepts), Consumo ...
Nature and evolution of a soil toposequence at coloso valley agricultural reserve
(2018)
Soil physical, chemical and mineralogical properties of four profiles in a Rio Piedras-Bajura
toposequence at Coloso Valley Agricultural Reserve were evaluated to theorize about the nature
and evolution of these soil ...
Evaluación de cadmio, cromo y plomo en suelos de potencial agrícola en la isla de Vieques
(2020-05-27)
Los metales pesados y elementos traza son de importancia en el medio ambiente por su trascendencia en la contaminación de suelos, éstos se encuentran en el suelo de manera natural o por acciones antropogénicas. Los problemas ...
Searching for the best methodology to determine lime requirement of selected Puerto Rican soils
(2010)
The accuracy of six methods to estimate lime requirement was evaluated using ten acid soil series from Puerto Rico. The methods selected for the research were soil-lime incubation, buffer solutions (Shoemaker-McLean-Pratt, ...
Evaluación de líneas de habichuelas (Phaseolus vulgaris L.) en un suelo de Corozal bajo condiciones de acidez y toxicidad de aluminio
(2007)
Soil acidity and aluminum toxicity are major problems in bean production in the tropics. This research studied the effect of pH and exchangeable Al3+ on grain and dry matter yield of the variety ‘Morales’, planted in a ...