11 documents found, page 1 of 2
Crambe grain yield affected by compaction degrees of an Oxisol
Marins, Araceli Ciotti de; Reichert , José Miguel; Secco, Deonir; Bassegio, Doglas; Nava , Daniela TrentinCrambe is a new crop that produces oil used for biodiesel production. Soil compaction in a no-tillage (NT) system is one of the main challenges for sustainable grain production in soil clay. The objective of this study was to evaluate the effect of compaction degree on crambe grain yield over two years. The levels of artificial compaction were generated using a roller compactor (0, 1, 3, and 5 passes) under a N...
ADEQUATE USE OF NITROGEN ASSOCIATED WITH MOLYBDENUM IN CRAMBE CROP
Silva, Tiago Roque Benetoli da; Brand˜ão, Andressa Gomes; Secco, Deonir; Santos, Reginaldo Ferreira; Zaratin Alves, Charline; Marins, Araceli CiottiCrambe is serving as alternative oilseed for biodiesel production, however, there are still impediments to commercial expansion because need more information about adequate fertilization. The study aimed evaluating adequate nitrogen rate applied in topdressing, associated with leaf molybdenum in crambe crop under field conditions. Treatments were four nitrogen rates (0, 40, 80 and 120 kg N ha-1) and two rates o...
Change in injection angle as alternative for diesel engine fueled with biodiese...
Paiva, Paulo Henrique; Gurgacz, Flavio; Gralick, Jonas; Bassegio, Doglas; Souza, Samuel Nelson Melegari de; Secco, DeonirBiodiesel properties have a significant impact on engine performance. The disadvantages of biodiesel include poor atomization. To overcome this problem, engine parameters such as the injection angle can be changed. The objective of this study was to evaluate the effect of changes in the injection angle of an injector pump on the performance of a diesel engine fueled with various biodiesel blends. The experiment...
Use of cover crops in Oxisol and its effects on yield and soybean oil content
Tokura, Luciene Kazue; Secco, Deonir; Zanão Júnior, Luiz Antônio; Siqueira, Jair Antonio Cruz; Alovisi, Alessandra Mayumi Tokura; Barison, AnderssonIn the no-tillage system, soils generally exhibit some degree of compaction that limits agricultural production. In this scenario, the use of soil cover plants is one of the alternatives capable of improving the structural quality of the soil and increasing the productivity of crops, such as soybeans. In the context, the objective of this study was to evaluate the effect of plant cover species and management sy...
Mathematical modeling of soil and water losses in Oxisol under management systems
Chang, Pablo; Secco, Deonir; Marins, Araceli Ciotti de; Rizzi , Rogério Luis; Tokura, Luciene KazueThe objective of this work was to mathematically model the losses of water and soil in a Oxisol with different management systems, through the physical attributes of soil and vegetation cover. The experimental area was located in the municipality of Santa Tereza do Oeste – PR, in a soybean field. The treatments consisted of three management systems: traditional no-tillage system, plastered no-tillage system, no...
Soil physical properties and maize grain yield after cover Crops
Castro, Mayra Beatriz Semiano; Secco, Deonir; Marins, Araceli Ciotti de; Bassegio, Doglas; Souza, Samuel Nelson Melegari de; Zanão Junior , Luiz AntonioStudies involving cover crops in areas managed under no-tillage system are of great scientific relevance to seek the sustainability of agricultural crops. This study aimed to evaluate the impact of the use of cover crops on the structure of a clayey Oxisol under no-tillage system and its effect on corn yield. The treatments consisted of the use of six cover species: millet (Pennisetum glaucum), dwarf pigeon pea...
Impact of land cover, slope and precipitation on soil water infiltration
Vidaletti, Vitória Fenilli; Marins, Araceli Ciotti de; Secco, Deonir; Rizzi, Rogério Luís; Chang, PabloThe knowledge of the rate of water infiltration in the soil is of fundamental importance for the proper use and management of the soil, in addition to helping in the planning of irrigation and drainage techniques. Mathematical modeling is indicated as a tool capable of anticipating events and pointing out alternatives that lead to the productive maintenance of the environment, and given the difficulty of obtain...
Fertilizer improves seed and oil yield of safflower under tropical conditions
Sampaio, Marinez Carpiski; Santos, Reginaldo Ferreira; Bassegio, Doglas [UNESP]; Vasconselos, Edmar Soares de; Silva, Marcelo de Almeida [UNESP]Made available in DSpace on 2018-12-11T17:29:39Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-12-30; Safflower (Carthamus tinctorius L.) has gained importance as an oilseed crop due to its hardiness and oil, which can be used in the production of biofuels. Studying proper crop management methods is highly important for the development of safflower in Brazil, since applying fertilizers correctly and usi...
Cover crops and straw management on yield components of crambe
Bassegio, Doglas; Santos, Reginaldo Ferreira; Secco, Deonir; Werncke, Ivan; Sarto, Marcos Vinícius MansanoThe objective of this study was to evaluate the dry matter (DM) yield and nutrient accumulation in cover crops and the effect of these, as well as mechanical management of crop residues on growth and grain yield of crambe (Crambe abyssinica). The experiment was conducted in Santa Helena, Paraná, Brazil in Rhodic Hapludox (Red Latosol in the Brazilian classification) in experimental design of randomized complete...
RANDOM SELECTION OF SAMPLE ELEMENTS AS A RESOURCE TO CONSTRUCT THEMATIC MAPS FO...
de Oliveira, Márcio Paulo; Dalposso, Gustavo Henrique; Vieira, Maycon Daniel; Secco, DeonirThe study investigated the effect of reduction of the sample elements number used in the representation of the distribution of spatial variable of soil resistance to the penetration (RSP) on layer 0-0,1m in the thematic maps. The Grid100, with one hundred sample elements marked every 10m is used as reference set and the reduction of the number of samples is considered as Grid 25. In other words, 25 elements sam...