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Relationship Among Crop Systems, Soil Cover, and Water Erosion on a Typic Hapludox

Pedro Luiz Terra Lima, Marx Leandro Naves Silva, John Norman Quinton, Pedro Velloso Gomes Batista, Bernardo Moreira Cândido, Nilton Curi

02/Mar/2018

ABSTRACT Several soil conservation practices are used to reduce water erosion and ensure sustainable agriculture. An effective crop management practice is intercropping, in which two or more crops with different architectures and vegetative cycles are grown simultaneously in the same area. We hypothesized that intercropping of corn and jack-bean increases soil cover and reduce soil erosion by water in comparison to monocropping. The objective of this study was to evaluate the effects of different crop systems on soil cover and […]

Urease Inhibitor and Irrigation Management to Mitigate Ammonia Volatilization from Urea in No-Till Corn

Fernando Viero, Guilherme Batista Menegati, Eduardo Carniel, Paulo Regis Ferreira da Silva, Cimélio Bayer

30/Oct/2017

ABSTRACT High nitrogen (N) losses by ammonia (NH3) volatilization from urea can compromise nitrogen fertilization efficiency and corn yield. The purpose of this study was to assess the effects of irrigation management and the addition of the urease inhibitor N-(n-butyl)thiophosphoric triamide (NBPT) on NH3-N losses from urea and on corn yield. To this end, two experiments were carried out in the 2011/12 crop season on a sandy clay loam Acrisol in the Central Basin region of Rio Grande do Sul, […]

Physical Properties and Crop Management for Corn in an Albaqualf

Robson Giacomeli, Enio Marchesan, Maurício Limberger de Oliveira, Thomas Newton Martin, Gustavo Mack Teló, Gabriel Donato, [...]

09/Mar/2017

ABSTRACT Rice monoculture in lowlands can cause problems for management practices in crop fields, for example, in weed control. For this reason, corn in rotation with irrigated rice in lowlands may be advantageous, despite problems with soil compaction and water excess. The objective of this study was to evaluate soil physical properties and corn performance in soil management systems in an Albaqualf soil (lowlands). Two experiments were conducted in the field, in the 2013/14 and 2014/15 crop seasons. The experimental […]

Use of Organic Compost Containing Waste from Small Ruminants in Corn Production

Henrique Antunes de Souza, Maria Diana Melo, Anacláudia Alves Primo, Lucas Vasconcelos Vieira, Roberto Cláudio Fernandes Franco Pompeu, Fernando Lisboa Guedes, [...]

05/Oct/2016

ABSTRACT Composting is a useful way of transforming livestock waste into organic fertilizer, which is proven to increase soil nutrient levels, and thus crop yield. Remains from production and slaughter of small ruminants can become a source of important elements for plant growth, such as N, after microorganism-driven decomposition.The aim of this investigation was to evaluate the effects of this compost on soil fertility and on the nutritional status and yield of the corn crop. The experiment was conducted in […]

CROP RESIDUE DECOMPOSITION AND NUTRIENT MINERALIZATION IN SOIL WITH DIFFERENT TEXTURES

Henrique José Guimarães Moreira Maluf, Emanuelle Mercês Barros Soares, Ivo Ribeiro da Silva, Júlio César Lima Neves, Lucas de Oliveira Guimarães Silva

01/Dec/2015

ABSTRACT The sustainability of conservation farming systems is closely linked to return of nutrients to the soil through decomposition of crop residues. The aim of this study was to evaluate decomposition of crop residues and nutrient mineralization in soils with different textures over a 175-day incubation period. The experimental design consisted of a 6 × 4 × 5 factorial arrangement – six treatments, composed of four crop residues (corn, brachiaria, common bean, and Stylosanthes) and two controls, both without residues, […]

MAIZE AGRONOMIC PERFORMANCE AS AFFECTED BY SEED TREATMENT WITH AZOSPIRILLUM SP. AND MINERAL NITROGEN RATES

Luís Sangoi, Ligia Maria Maraschi da Silva, Murilo Renan Mota, Fernando Panison, Amauri Schmitt, Natalia Maria de Souza, [...]

01/Jul/2015

The use of diazotrophic bacteria can help to achieve higher yields and reduce negative environmental impacts caused by N fertilizers. The aim of this study was to evaluate the effects of seed treatment with Azospirillum bacteria and the application of different rates of mineral N on maize agronomic performance at two levels of yield management. A field experiment was set up in Lages, SC, Brazil, in the 2011/2012 and 2012/2013 growing seasons. A randomized block experimental design arranged in split-split […]

INOCULATION AND ISOLATION OF PLANT GROWTH-PROMOTING BACTERIA IN MAIZE GROWN IN VITÓRIA DA CONQUISTA, BAHIA, BRAZIL

Joelma da Silva Santos, Tarciana de Oliveira Viana, Cristina Meira de Jesus, Vera Lúcia Divan Baldani, Joilson Silva Ferreira

01/Jan/2015

Maize is among the most important crops in the world. This plant species can be colonized by diazotrophic bacteria able to convert atmospheric N into ammonium under natural conditions. This study aimed to investigate the effect of inoculation of the diazotrophic bacterium Herbaspirillum seropedicae (ZAE94) and isolate new strains of plant growth-promoting bacteria in maize grown in Vitória da Conquista, Bahia, Brazil. The study was conducted in a greenhouse at the Experimental Area of the Universidade Estadual do Sudoeste da […]

PHOSPHORUS FERTILIZATION AND SOIL COMPACTION: SOYBEAN AND MAIZE ROOT SYSTEM AND SOIL PHYSICAL PROPERTIES

Franciele Caroline de Assis Valadão, Oscarlina Lúcia dos Santos Weber, Daniel Dias Valadão Júnior, Alex Scapinelli, Filipe Rafaeli Deina, Aloísio Bianchini

01/Jan/2015

Associated with the benefits of the no-till system for the soil, there may be the formation of a vertical gradient of fertility and a compacted layer caused by heavy farm machine traffic, which may modify the root growth of crops. The aim of this study was to evaluate the effect of rates and forms of phosphate fertilizer application and soil compaction by machine traffic on the physical properties and root system of soybeans and maize. The study was conducted in […]