Effect of Trinexapac-ethyl associated with nitrogen fertilization on upland rice nutritional status and grain yield

Trinexapac-ethyl spraying time and proper nitrogen rate are essential to reduce plant height and lodging at harvest, without affecting rice yield and nutritional balance. This study aimed to evaluate trinexapac-ethyl spraying time and N contents as topdressing for upland rice paddies. The experiment was carried out in a randomized block design and a 4x5 factorial scheme, with four replications. Treatments consisted of four trinexapac-ethyl spraying times, in the phenological stages of tillering, floral differentiation, between tillering and floral differentiation, and a control (without spraying), and five nitrogen rates (0, 50, 100, 150, and 200, kg ha-1) as topdressing. As nitrogen topdressing rates increased, leaf contents of N, Fe++, and Zn++ increased, while S and Mn++ decreased; however, contents of P, Ca++, Mg++, B, and Cu++ were little influenced. When trinexapac-ethyl was applied, leaf contents of N, P, S, B, and Zn++ were little influenced, while P, Ca++, Mg++, Fe++, and Mn++ increased, and Cu++ decreased. Trinexapac-ethyl can be applied at tillering without decreasing rice yield. Upland rice increased grain yield by 58 and 46% in two consecutive crop years due to application of about 120 kg N ha-1 as topdressing.

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Rice grain yield as affected by subsoiling, compaction on sowing furrow and seed treatment

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v20n5p395-400 ◽

2016 ◽

Vol 20 (5) ◽

pp. 395-400 ◽

Cited By ~ 1

Author(s):

Veneraldo Pinheiro ◽

Luís F. Stone ◽

José A. F. Barrigossi

Keyword(s):

Grain Yield ◽

Seed Treatment ◽

Rice Yield ◽

Upland Rice ◽

Block Design ◽

Rice Grain ◽

No Tillage ◽

Seed Treatments ◽

Randomized Block Design ◽

Quadratic Response

ABSTRACT This study aimed to determine the effects of subsoiling, compaction on sowing furrow and seed treatments with insecticides on the grain yield of upland rice cultivated under no-tillage. Two experiments were carried out, one in an area with and the other in an area without subsoiling, in which five seed treatments combined with five compaction pressures on the sowing furrow were compared in a randomized block design, in a factorial scheme, with three replicates. The seed treatments were: T0 - without treatment, T1 - imidacloprid + thiodicarb, T2 - thiamethoxam, T3 - carbofuran, and T4 - fipronil + pyraclostrobin + thiophanate methyl. The compaction pressures were: 25, 42, 126, 268 and 366 kPa. Subsoiling positively affected rice yield in the presence of higher compaction pressures on the sowing furrow. Seed treatment was effective at increasing rice grain yield only at the lowest compaction pressures. Rice yield showed quadratic response to compaction on the sowing furrow, with maximum values obtained at pressures ranging from 238.5 to 280.3 kPa.

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Genotype selection and addition of fertilizer increases grain yield in upland rice in Suriname

Acta Amazonica ◽

10.1590/1809-4392201603374 ◽

2017 ◽

Vol 47 (3) ◽

pp. 185-194 ◽

Cited By ~ 4

Author(s):

Adriano Stephan NASCENTE ◽

Ruby KROMOCARDI

Keyword(s):

Grain Yield ◽

Management Practices ◽

Upland Rice ◽

Block Design ◽

Field Trials ◽

Application Rate ◽

Rice Grain ◽

Rice Varieties ◽

Local Conditions ◽

Randomized Block Design

ABSTRACT The upland rice farmers in Suriname use local varieties and low level technologies in the field. As a result, the upland rice grain yield is low, at about 1 000 kg ha-1. Our objective was to evaluate the use of upland rice cultivars from Suriname and Brazil, and the effect of nitrogen, N, phosphorus, P, and potassium, K, fertilizers on cultivation variables. We undertook four field trials in the Victoria Area, in the Brokopondo District, using a randomized block design each with four replications. The most productive rice varieties were BRS Esmeralda (grain yield 2 903 kg ha-1) and BRS Sertaneja (2 802 kg ha-1). The highest grain yield of 2 620 kg ha-1 was achieved with a top dressing application of 76.41 kg N ha-1 20 days after sowing. For P, the highest grain yield of 3 085 kg ha-1 was achieved with application of 98.06 kg ha-1 P2O5 applied at sowing. An application rate of 31.45 kg ha-1 of K2O at sowing achieved the highest grain yield of 2 952 kg ha-1. Together, these application rates of N, P and K resulted in rice grain yield of about 3 000 kg ha-1, which is three times greater than the national average for upland rice. We demonstrate that the use of improved rice varieties matched to the local conditions, and application of appropriate fertilizers, are management practices that can result in significant increases in rice grain yield in Suriname.

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COBERTURA NITROGENADA EM DIFERENTES ESTÁDIOS FENOLÓGICOS DO FEIJOEIRO COMUM ALTERA PRODUTIVIDADE E QUALIDADE DE GRÃOS

Nativa ◽

10.31413/nativa.v7i6.6663 ◽

2019 ◽

Vol 7 (6) ◽

pp. 636

Author(s):

Gabriel Pereira Nogueira ◽

Mateus Sebastião Gonçalves Da Silva ◽

Fábio Tiraboschi Leal ◽

Rogério Farinelli ◽

Fábio Luiz Checchio Mingotte ◽

...

Keyword(s):

Phaseolus Vulgaris ◽

Grain Yield ◽

Common Bean ◽

Block Design ◽

Phenological Stages ◽

Agronomic Efficiency ◽

Randomized Block Design ◽

Soil Preparation ◽

Grain Yield And Quality ◽

Qualitative Performance

A necessidade de conhecer a marcha de absorção do nitrogênio (N) pelo feijoeiro é importante para compreender os desempenhos produtivo e qualitativo dessa cultura. O objetivo deste estudo foi avaliar a influência da cobertura nitrogenada em função de diferentes estádios fenológicos no desempenho morfoagronômico e produtivo e nas características tecnológicas dos grãos do feijoeiro em sistema de plantio convencional. Utilizou-se o delineamento de blocos casualizados, com quatro repetições. Os tratamentos foram constituídos por doze combinações de fornecimento de N (FN) em cobertura (dose total = 90 kg ha-1 de N) aplicadas nos estádios fenológicos V3, V4 e R5 (V3+V4+R5) do feijoeiro de inverno irrigado: 00+00+00; 30+30+30; 30+60+00; 30+00+60; 60+30+00; 00+60+30; 45+45+00; 00+45+45; 45+00+45; 90+00+00; 00+90+00; e 00+00+90. A fonte de N utilizada foi ureia convencional. Os FN 30+00+60, 00+45+45 e 45+00+45 incrementam a produtividade de grãos e a eficiência agronômica em relação à ausência de N e à aplicação de dose única no estádio fenológico V4. do feijoeiro comum. As maiores produtividades de proteína bruta e o menor tempo para cozimento foram proporcionadas pelos FN 00+45+45, 45+00+45, 90+00+00, 00+90+00 e 00+00+90.Palavras-chave: Phaseolus vulgaris; parcelamento do N; eficiência agronômica; tecnologia dos grãos. NITROGEN TOPDRESSING AT DIFFERENT PHENOLOGICAL STAGES ON COMMON BEAN CHANGES GRAIN YIELD AND QUALITY ABSTRACT: The need to know the nitrogen uptake (N) by common bean is important to understand the productive and qualitative performance of this crop. The objective of this study was to evaluate the influence of nitrogen topdressing as a function of different phenological stages on the morphometric and productive performance, and on the technological characteristics of the bean grains grown under conventional soil preparation. A randomized block design with four replications was used. The treatments were constituted by twelve topdressing N supply combinations (NS) (total dose = 90 kg ha-1 N) applied in the phenological stages V3, V4 and R5 (V3+V4+R5) of irrigated winter bean: 00+00+00; 30+30 +30; 30+60+00; 30+00+60; 60 + 30 + 00; 00+60+30; 45+45+00; 00+45+45; 45+00+45; 90+00+00; 00+90+00; and 00+00+90. The source of N used was conventional urea. NS 30 + 00 + 60, 00 + 45 + 45 and 45 + 00 + 45 increase grain yield and agronomic efficiency in relation to the absence of N and single dose application at V4 phenological stage of common bean. The highest crude protein yields and the shortest cooking time were provided by FN 00+45+45, 45+00+45, 90+00+00, 00+90+00 and 00+00+90.Keywords: Phaseolus vulgaris; N splitting; agronomic efficiency; grains technology.

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AGRONOMIC PERFORMANCE OF MAIZE UNDER Azospirillum brasilense INOCULATION AND TOP-DRESSING NITROGEN FERTILIZATION

Revista Brasileira de Milho e Sorgo ◽

10.18512/rbms2020v19e1185 ◽

2020 ◽

Vol 19 ◽

pp. 15

Author(s):

VINÍCIUS BALEIRO FERNANDES ◽

FABIO LUIZ CHECCHIO MINGOTTE ◽

ORLANDO FERREIRA MORELLO ◽

ANDERSON PRATES COELHO ◽

LEANDRO BORGES LEMOS

Keyword(s):

Grain Yield ◽

Nitrogen Fertilization ◽

Azospirillum Brasilense ◽

Block Design ◽

Nitrogen Fertilizers ◽

Agronomic Performance ◽

Positive Effects ◽

Viable Cells ◽

Randomized Block Design ◽

Pre Treatment

Maize inoculation with bacteria of the genus Azospirillum can reduce the consumption of nitrogen fertilizers to obtain maximum grain yield. In this context, the aim was to evaluate the effect of inoculation with Azospirillum brasilense associated with nitrogen fertilization on the maize agronomic performance. A randomized block design was used in a split-plot scheme with four replicates. Four inoculation managements with Azospirillum brasilense (T0 - control without inoculation; TC2 - seed box inoculation, 200x108 viable cells ha-1; TC3 - seed box inoculation, 400x108 viable cells ha-1; TS1 - previous inoculation of the seeds, 600x108 viable cells ha-1) associated with four top-dressing N doses (0, 60, 120 and 180 kg ha-1), applied at maize stage V6 by urea. Inoculation with Azospirillum brasilense associated with top-dressing nitrogen fertilization increases the number of grain rows per ear, number of grains per row, number of grains per ear and grain yield of maize, mainly due to its positive effects on plant nutrition. Managements with seed box inoculation with 400x108 viable cells per ha (TC3) and inoculation in seed pre-treatment (TS1) are the most recommended for maize.

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ADUBAÇÃO NITROGENADA E USO DE REGULADOR DE CRESCIMENTO NA PRODUÇÃO DE TRIGO DE SEQUEIRO

Colloquium Agrariae ◽

10.5747/ca.2018.v14.n4.a243 ◽

2018 ◽

Vol 14 (4) ◽

pp. 01-09

Author(s):

Claudio Hideo Martins da Costa ◽

Jordana Rafaela Guimarães Vilela ◽

Ana Laura Silva de Sousa ◽

Rogério Borges de Oliveira Paz ◽

Bárbara Fátima Silva Moura

Keyword(s):

Nitrogen Fertilization ◽

Management Practice ◽

Cropping Systems ◽

Flag Leaf ◽

Block Design ◽

Climatic Conditions ◽

Randomized Block Design ◽

Increase In Productivity ◽

Nitrogen Rates ◽

Ear Number

Nitrogen fertilization is an important management practice in grasses and quite complex, due to the different factors that influence such as climatic conditions, cropping systems, rates and available sources. The objective of this work was to evaluate the different rates of side dressing nitrogen and the effect of the trinexapac-ethyl on wheat (Triticum aestivumL.).The experiment was a randomized block design in a 5x2 factorial scheme, with 4 replicates. The treatments were composed of five nitrogen rates applied in side dressing(0, 20, 40, 80 and 160 kg ha-1of N) and two rates ofetil-trinexapac (0 e 100 g ha-1do active ingredient)in the wheat crop.The following variables were evaluated: shoot dry matter, plant height, flag leaf height, ear insertion height, distance of source and drain, ear length, number of ears per square meter, number of spikelets per ear, fertility of spikelets, number of grains per ear, number of grains per spikelet, mass of one thousand grains, grain yield), hectoliter weight, and grain protein. The growth regulator changes the morphological components of wheat, but does not alter the productive components and yield of grains, not justifying their use under the conditions under which the study took place. Nitrogen fertilization does not alter the morphological components of wheat plants, but increases the number of ears per m2up to a rate of 52 kg ha-1of N, reflecting the increase in productivity up to the rate of 59 kg ha-1.

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Spacing, population density and nitrogen fertilization in corn grown in an Oxisoil

Revista CERES ◽

10.1590/s0034-737x2014000300018 ◽

2014 ◽

Vol 61 (3) ◽

pp. 424-433 ◽

Cited By ~ 1

Author(s):

Maria do Carmo Lana ◽

Leandro Rampim ◽

Tatiane Ohland ◽

Fernando Fávero

Keyword(s):

Grain Yield ◽

Plant Density ◽

Block Design ◽

Leaf Nitrogen ◽

Leaf Nitrogen Content ◽

Randomized Block Design ◽

Plant Densities ◽

Tillage System ◽

Leaf N Content ◽

Nitrogen Rates

The objective of this study was to evaluate yield components, leaf nitrogen content and grain yield in corn as affected by row spacing, plant density and nitrogen topdressing. The experiment was conducted with the single-cross hybrid AG 8021, in the municipality of Toledo-PR, in an Oxisoil under no-tillage system, in the crop year 2005/ 2006. The experiment was arranged in a randomized block design and treatments in split-split-plots, with four replications. The two row spacings (0.45 and 0.90 m) were allocated in the main plots, the two plant densities (60,000 and 80,000 plants ha-1) were allocated in the subplots and the three nitrogen rates (80, 100, 120 and 140 kg ha-1 N) were allocated in the sub-subplots. Topdress nitrogen was applied using urea as N source. The rise of the plant population from 60,000 to 80,000 plants ha-1 and the application of topdress nitrogen resulted in increased production components. The application of topdress fertilization provided increase in leaf N content and grain yield for the spacings 0.45 m and 0.90 m. Yield was higher in the spacing 0.45 m than 0.90 m. Yield was higher with 60,000 plants than with 80,000 plants at 0.90 m, while at 0.45 m there was no difference in relation to the plant density.

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Leaf application of silicic acid to white oat and wheat

Revista Brasileira de Ciência do Solo ◽

10.1590/s0100-06832012000500018 ◽

2012 ◽

Vol 36 (5) ◽

pp. 1538-1544 ◽

Cited By ~ 18

Author(s):

Rogério Peres Soratto ◽

Carlos Alexandre Costa Crusciol ◽

Gustavo Spadotti Amaral Castro ◽

Claudio Hideo Martins da Costa ◽

Jayme Ferrari Neto

Keyword(s):

Grain Yield ◽

Silicic Acid ◽

Dry Matter ◽

Flag Leaf ◽

Block Design ◽

Commercial Product ◽

Acid Form ◽

Yield Increase ◽

Randomized Block Design ◽

Floral Differentiation

Silicon (Si) is beneficial to plants in several aspects, but there are doubts about the effectiveness of leaf application. The purpose of this work was to evaluate the effects of Si, applied in a newly developed stabilized silicic acid form to the leaf, on nutrition and yield of irrigated white oat and wheat. Two experiments were performed (one per crop) in winter 2008, in Botucatu-SP, Brazil. A completely randomized block design with 14 replications was used. Treatments consisted of a control (without Si application) and Si leaf spraying, at a rate of 2.0 L ha-1 of the commercial product containing 0.8 % soluble Si. Silicon rate was divided in three parts, i.e. applications at tillering, floral differentiation and booting stages. Silicon leaf application increased N, P, K, and Si concentrations in white oat flag leaf, resulting in higher shoot dry matter, number of panicles per m², number of grains per panicle and grain yield increase of 34 %. In wheat, Si leaf application increased K and Si concentrations, shoot dry matter and number of spikes per m², resulting in a grain yield increase of 26.9 %.

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Efficiency in nitrogen management using conventional and transgenic technology in the cultivation of maize

Agronomy Science and Biotechnology ◽

10.33158/asb.r124.v7.2021 ◽

2021 ◽

Vol 7 ◽

pp. 1-12

Author(s):

Ivan Ricardo Carvalho ◽

Márcio Peter ◽

Gustavo Henrique Demari ◽

Francine Lautenchleger ◽

Filipe Selau Carlos ◽

...

Keyword(s):

Grain Yield ◽

Nitrogen Fertilization ◽

Block Design ◽

Maize Yield ◽

Nitrogen Partitioning ◽

Transgenic Technology ◽

Maize Crop ◽

Randomized Block Design ◽

Genetic Technologies ◽

Set Up

The objective to evaluate the maize yield components as a function of the top-dressing nitrogen partitioning in maize plants with conventional and transgenic technology. The experiment was carried out in the agricultural crops of 2012/2013 and 2013/2014, in the municipality of Tenente Portela-RS, Brazil. The experiment was set up in a randomized block design in a factorial scheme with two genetic technologies x 11 nitrogen fertilization treatments, arranged in three replications. The treatments were composed of top-dressing applications in the phenological stages V2 - two fully expanded leaves, (V2), V4 - four fully expanded leaves, (V4), V6 - six fully expanded leaves (V6) and V8 - with eight fully expanded leaves (V8) and split applications in V2+V4; V2+V6; V2+V8; V4+V6; V4+V8; V6+V8; and V2+V4+V6+V8. There was interaction between genetic technologies and levels of nitrogen fertilization in the maize crop. The highest grain yield was obtained with conventional technology because it presented plants with greater prolificacy, ear diameter and number of grains per row. Grain yield was superior with nitrogen fertilization in V4 and in nitrogen splitting in the V4 + V6, V4 + V8 and V2 + V4 + V6 + V8 stages.

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AADUBAÇÃO NITROGENADA E INOCULAÇÃO COM Azospirillum brasilense EM CEVADA

Nativa ◽

10.31413/nativa.v6i1.4611 ◽

2018 ◽

Vol 6 (1) ◽

pp. 01 ◽

Cited By ~ 1

Author(s):

Gustavo Ribeiro Barzotto ◽

Sebastião Ferreira Lima ◽

Osvaldir Feliciano Santos ◽

Gabriel Luiz Piati ◽

Carlos Roberto Wassolowski

Keyword(s):

Hordeum Vulgare ◽

Grain Yield ◽

Nitrogen Fertilization ◽

Azospirillum Brasilense ◽

Block Design ◽

Dry Mass ◽

Plant Production ◽

Randomized Block Design ◽

Productivity Gain ◽

Barley Grains

A cevada constitui uma importante cultura no Brasil devido, principalmente, a utilização de seu grão na produção de cervejas. O objetivo deste trabalho foi avaliar os efeitos da adubação nitrogenada e da inoculação com Azospirillum brasilense em cevada. O experimento foi instalado em campo, utilizando o delineamento em blocos casualizados em esquema fatorial, sendo quatro doses de nitrogênio (0, 40, 80 e 120 kg ha-1) na presença ou ausência de inoculação de sementes com A. brasilense e três repetições. Foram avaliadas características de crescimento e massa seca de planta, componentes de produção, teor de N e produtividade de grãos. A maior produtividade de grãos foi alcançada com 66 kg ha-1 de N, sem a aplicação da bactéria. Concluiu-se que o uso de A. brasilense aumenta a produtividade de grãos de cevada na ausência da adubação nitrogenada, mas não suplanta o ganho de produtividade apenas com o uso do N em doses superiores. A severidade de B. sorokidiana foi favorecida com a aplicação de A. brasilense nas maiores doses de N. A inoculação com A. brasilense é uma alternativa viável para aumentar a produtividade de grãos de cevada, caso se opte pelo cultivo sem fertilização mineral nitrogenada.Palavra-chave: Hordeum vulgare, bactérias diazotróficas, malte. NITROGEN FERTILIZATION AND INOCULATION WITH AZOSPIRILLUM BRASILENSE IN BARLEY ABSTRACT:The barley is an important crop in Brazil, mainly due to the use of its grain in the production of beers. The objective of this work was to evaluate the effects of nitrogen fertilization and inoculation with Azospirillum brasilense on barley. The experiment was carried out in the field, using a randomized block design in a factorial scheme, with four nitrogen doses (0, 40, 80 and 120 kg ha-1) in the presence or absence of seed inoculation with A. brasilense and three replications. Growth characteristics and dry mass of the plant, production components, N content and grain yield were evaluated. The highest grain yield was achieved with 66 kg ha-1 of N, without application of the bacteria. It was concluded that the use of A. brasilense increases the yield of barley grains in the absence of nitrogen fertilization, but does not supplant the productivity gain only with the use of N in higher doses. The B. sorokidiana severity was favored by the application of A. brasilense in the highest N doses. The inoculation with A. brasilense is a viable alternative to increase the yield of barley grains, in case of cultivation without nitrogen fertilization.Keywords: Hordeum vulgare, diazotrophic bacteria, malt. DOI:

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Upland rice agronomic performance in response to different doses and sources of nitrogen

Colloquium Agrariae ◽

10.5747/ca.2020.v16.n2.a363 ◽

2020 ◽

Vol 16 (2) ◽

pp. 96-100

Author(s):

Tácio Peres da Silva ◽

Douglas Goulart Castro ◽

Laís Moretti Tomé ◽

Marco Renan Félix ◽

Antônio Rosário Neto ◽

...

Keyword(s):

Experimental Design ◽

Grain Yield ◽

Nitrogen Fertilization ◽

Upland Rice ◽

Block Design ◽

Agronomic Performance ◽

Nitrogen Application ◽

Randomized Complete Block Design ◽

The University ◽

Different Doses

The aim of the present study was to evaluate the response of different doses and sources of nitrogen (N) on agronomic characteristics in upland riceas well astheclimaticand environmentalinfluence on nitrogen fertilization results. Theexperiments were conducted in the University of Lavras, during 2015/2016 and 2016/2017 crop seasons, the plots consisted of 4 lines of 3 linear meters, with spacing among rows of 35 cm and a useful plot of 4.2 m2. The experimental design was a randomized complete block design with three replications in a 4x4x 2factorial design. The factor doseconsisted in 0, 50,100 e 200 kg ha-1N and the factor sourcesconsisted in ammonium nitrate, ammonium sulphate, urea and polycote, totaling 16 treatments. The characteristics evaluatedwere plant height, grain yield, grain chalkness, 1000 grainsweight andyield. It was concluded that the addiction of doses and Nsources didnot change the agronomic performanceof the upland rice crop. There is an influence of the environment on the responses of plants to nitrogen application, being observed different results in different cropseasons.

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