Results: 111

Synthesis of enriched biochar as a vehicle for phosphorus in tropical soils

Acta amaz; 49 (4), 2019
Phosphorus (P) is one of the nutrients that most limits agricultural productivity, especially in tropical soils. Enriched biochar has been proposed to increase the bioavailability of P and other nutrients in the soil. Thus, the objective of this study was to evaluate the availability of P in phosphate bi...

Contenido de minerales en arroces y productos industriales elaborados a base de arroz

Diaeta (B. Aires); 37 (167), 2019
El arroz (Oryza sativa L.) es un alimento básico para más de la mitad de la población mundial. Su producción anual en Argentina es cercana a 1,5 millones de toneladas, de las cuales el 35% se destina al consumo interno y el resto se exporta. El procesamiento industrial genera arroces con distinto gra...

Evaluación del contenido nutricional de productos lácteos en programa de alimentación venezolano
Evaluation of the nutritional content of dairy products in the Venezuelan food program

Arch. latinoam. nutr; 69 (2), 2019
En Venezuela se distribuyen productos lácteos en polvo a través de los Comité Locales de Abastecimiento y Producción (CLAP). Con el objetivo de evaluar la composición nutricional de catorce marcas de productos lácteos provenientes de industrias mexicanas y distribuidos en Venezuela, se realizó un ...

Población de cianobacterias en suelos arroceros: efecto de las rotaciones
Cyanobacteria populations in rice soils: rotation effects

Rev. argent. microbiol; 51 (1), 2019
Este trabajo tuvo como objetivo evaluar el efecto de rotaciones arroceras sobre la población de cianobacterias durante el ciclo de cultivo. El estudio se condujo en Entre Ríos (Argentina). Se evaluaron cuatro rotaciones: arroz-soja (AS); arroz-soja-maíz-soja (ASMS): arroz-arroz (AA) y arroz-pradera (A...

Effects of gamma radiation on the stability and degradation kinetics of phenolic compounds and antioxidant activity during storage of (Oryza sativa L) black rice flour

Abstract The effects of gamma radiation (0, 1, 2 and 3 kGy) were used to evaluate the stability and thermal degradation kinetics of anthocyanins, as well as the stability of total phenolic compounds (TPC) and antioxidant activity at different temperatures (4, 25, 35 and 45 °C) during the storage (0, 30,...

Reports of new wing color polymorphism and taxonomic information to cercopids (Auchenorrhyncha: Cercopidae) from upland rice crop, Pará State, Brazil

Braz. j. biol; 78 (4), 2018
Abstract Cercopidae is one of the largest families of the spittlebug superfamily Cercopoidea. Most spittlebugs species are characterized by bright color patterns. Thus, this study evaluated for the first time the Cercopidae species collected in rice crops, Novo Progresso, Pará state, Brazil. Insects wer...

Downregulation of OsAGO17 by artificial microRNA causes pollen abortion resulting in the reduction of grain yield in rice

Background: Pollen development is an important reproductive process that directly affects pollen fertility and grain yield in rice. Argonaute (AGO) proteins, the core effectors of RNA-mediated silencing, play important roles in regulating plant growth and development. However, few AGO proteins in rice we...

Comparison of aquatic macrophyte community structure between natural wetlands and rice fields with different cultivation ages

Braz. j. biol; 78 (2), 2018
Abstract Recent studies indicate that rice fields contribute to the conservation of aquatic plants, however, repeated cultivation can reduce the species diversity harbored by rice fields. Repeated tillage, agrochemical application and environmental homogeneity can reduce plant diversity and select for sp...

Emisión de óxido nitroso, nitrificación, desnitrificación y mineralización de nitrógeno durante el cultivo del arroz en 2 suelos de Uruguay

Rev. argent. microbiol; 50 (1), 2018
Los procesos microbianos como la mineralización, la nitrificación y la desnitrificación regulan la dinámica del nitrógeno en el suelo. Estos 2 últimos son los principales responsables de la emisión de óxido nitroso (N2O). En este trabajo se determinaron los flujos de N2O en momentos clave del cic...

Relationships of rice yield and quality based on genotype by trait (GT) biplot

An. acad. bras. ciênc; 90 (1), 2018
ABSTRACT An experiment was conducted to examine the influencing characters on rice by using 64 rice genotypes, including four local landraces, four released cultivars and 56 mutant lines (M5) derived from these genotypes, with application of the genotype by trait (GT) biplot methodology. The first two pr...