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5 results

Rhizobial Inoculation, Alone or Coinoculated with Azospirillum brasilense, Promotes Growth of Wetland Rice

Leandro Hahn, Enilson Luiz Saccol de Sá, Benjamin Dias Osório, Rafael Goulart Machado, Raquel Garibaldi Damasceno, Adriana Giongo

05/Oct/2016

ABSTRACT Rhizobia and associative bacteria promote growth in rice plants (Oryza sativa L.) through a series of mechanisms, but most studies on inoculation have been performed based on inoculation with these bacteria in a separate or singular manner. The objective of this study was to assess the efficiency of single/isolated inoculation and inoculation combined with symbiotic rhizobia from forage legume and with Azospirillum brasilense on promoting growth and the root colonization process in wetland rice. Two rhizobia among four isolates […]

Macronutrient Uptake and Removal by Upland Rice Cultivars with Different Plant Architecture

Carlos Alexandre Costa Crusciol, Adalton Mazetti Fernandes, Antonio Carlos de Almeida Carmeis, Rita de Cássia Félix Alvarez

06/Jun/2016

ABSTRACT Modern high-yielding rice cultivars possibly take up and remove greater quantities of macronutrients than traditional and intermediate cultivars. This study was carried out with the aim of evaluating the extraction and removal of macronutrients by upland rice cultivars. These information are of utmost importance for the correct fertilizer management. The treatments consisted of three upland rice cultivars (Caiapó, a traditional type; BRS Primavera, an intermediate type; and Maravilha, a modern type). Macronutrient accumulation by rice cultivars up to the […]

Micronutrient and Silicon Uptake and Removal by Upland Rice Cultivars with Different Plant Architecture

Carlos Alexandre Costa Crusciol, Antonio Carlos de Almeida Carmeis, Adalton Mazetti Fernandes, Rita de Cássia Félix Alvarez

06/Jun/2016

ABSTRACT Upland rice cultivars manifest different nutritional demands. A field study was conducted to quantify the extraction, distribution, and removal of micronutrients and silicon by the upland rice cultivars. The experiment was arranged in a randomized complete block-split plot design. Plots consisted of three cultivars (Caiapó – traditional, BRS Primavera – intermediate, and Maravilha – modern) of upland rice. Split-plots consisted of plant samplings, which occurred at 39, 46, 55, 67, 75, 83, 92, 102, 111, 118, and 125 days […]

EFFECTIVENESS OF CHEMICAL METHODS IN PREDICTING PHOSPHORUS AVAILABILITY TO FLOOD IRRIGATED RICE IN SOILS OF SANTA CATARINA STATE, BRAZIL

Marcia Aparecida Simonete, Paulo Roberto Ernani, Letícia Moro, Claudia Fernanda Almeida Teixeira-Gandra, Luciano Colpo Gatiboni

01/Jul/2015

The soils used to grow irrigated rice in the State of Santa Catarina have different mineralogical and chemical characteristics from the soils used for calibration studies of the Mehlich-1 extractant, for estimating soil phosphorus availability to plants. Thus, the aim of this study was to evaluate the effectiveness of Mehlich-1, Mehlich-3, Resin, Olsen and EDTA extractants in predicting P availability to flood irrigated rice in soils of State of Santa Catarina. The experiment was carried out in a greenhouse in […]

ELECTROCHEMICAL CHANGES AND NUTRIENT DYNAMICS IN THE SOLUTION OF SOIL WITH RICE IRRIGATED WITH TREATED INDUSTRIAL LEACHATE

Filipe Selau Carlos, Andrei José Marafon, Robson Andreazza, Ibanor Anghinoni, Marino José Tedesco, Flávio Anastácio de Oliveira Camargo

01/Mar/2015

The use of treated industrial wastewater in flood irrigation of rice may cause electrochemical changes and increase the nutrient content in the soil solution. To test this hypothesis, the aim of the present study was to evaluate the dynamics of the chemical and electrochemical properties of the soil solution under flooded rice irrigated with treated industrial leachate containing 820 mg L-1 of Na. The experiment was conducted in a greenhouse, using pots filled with 20 kg of soil in a […]