scholarly journals OPTIMIZATION OF CANOLA AGRONOMIC YIELD SUBMITTED TO DIFFERENT DOSES OF POTASSIUM IN FLOWERING

2020 ◽  
Vol 28 ◽  
pp. 389-396
Author(s):  
Willian Bosquette Rosa ◽  
José Barbosa Duarte Júnior ◽  
Gilberto Omar Tomm ◽  
Antonio Carlos Torres da Costa ◽  
Samara Brandão Queiroz
Keyword(s):  
Oil Content ◽  
Block Design ◽  
Agronomic Performance ◽  
Phenological Stages ◽  
Flowering Duration ◽  
Potassium Fertilization ◽  
Randomized Block Design ◽  
Beginning Of Flowering ◽  
High Yields ◽  
The Right

Providing nutrients in quantities and at the right time is of paramount importance to obtain high yields in canola culture. The objective of this work was to evaluate the agronomic performance of the Hyola 433 hybrid, submitted to potassium fertilization during flowering, during the 2016/2017 harvest. A randomized block design with four repetitions was used, in a 2x5 factorial scheme, with two canola phenological stages (F1 and F2) and five potassium doses in coverage (0, 15, 30, 60 and 120 kg ha-1). The following phenometric variables were evaluated: emergence at the beginning of flowering (EIF), flowering duration (DFL), maturation duration (DFL) and cycle; as well as agronomic variables: number of silicas per plant (NSP), number of grains per silicas (NGS), plant height (ESP), mass of a thousand grains (MMG), productivity (PRO) and oil content. There was no interaction between application times and potassium doses for MMG, PRO and oil content. The dose of 60 kg ha-1 increased the DFL and the cycle. The maximum number of 309 silicas per plant was obtained with the dose of 120 kg ha-1 of K2O. The increase of potassium concentrations reduced calcium concentration in plant tissue. In general, potassium fertilization during flowering increases the expression of variables related to canola phenology and agronomic performance.

scholarly journals Trinexapac-ethyl application time in the crop corn agronomic performance grown under different plant arrangements

2022 ◽  
Vol 43 (2) ◽  
pp. 809-826
Author(s):  
Mariana Alves de Oliveira ◽  
◽  
Claudemir Zucareli ◽  
André Prechlak Barbosa ◽  
Leandro Teodoski Spolaor ◽  
...  
Keyword(s):  
Plant Architecture ◽  
Block Design ◽  
Growth And Yield ◽  
Row Spacing ◽  
Agronomic Performance ◽  
Application Time ◽  
Phenological Stages ◽  
Corn Crop ◽  
Randomized Block Design ◽  
Ear Height

Reduced row spacing promotes more uniform spatial distribution of plants in the field. However, the adoption of reduced row spacing only is possible with smaller plants, which may be obtained with the use of plant growth regulator. This study aimed to evaluate the agronomic performance of the first corn crop with Trinexapac-ethyl applied at the different plant development stages and grown under different row spacing, with the same plant population. The experiments were arranged in a split-plot randomized block design with four replications, with row spacing for the plots (0.45 and 0.90 m) and Trinexapac-ethyl (TE) application time to subplots (control without application, at the V3, V6, V9 and V12 phenological stages). The Trinexapacethyl application time interacted with row spacings changing the growth and yield performance of the corn crop. For 0.45 m spacing Trinexapac-ethyl application at V12 and for 0.90 m spacing application at V9 and V12 reduced plant height and ear height. Trinexapac-ethyl application at V9 for both row spacings changed the plant architecture without changing the ear length and grain yield.

scholarly journals Agronomic performance of canola submitted to desiccation with herbicides at different maturation stages

2019 ◽  
Vol 23 (6) ◽  
pp. 419-424
Author(s):  
Willian B. Rosa ◽  
José B. Duarte Júnior ◽  
Ivonei Perego ◽  
Bruno H. de Almeida ◽  
Antonio C. T. da Costa ◽  
...  
Keyword(s):  
Grain Yield ◽  
Oil Content ◽  
Block Design ◽  
Grain Weight ◽  
Thousand Grain Weight ◽  
Phenological Stages ◽  
Ammonium Glufosinate ◽  
Randomized Block Design ◽  
Maturation Stages ◽  
Growing Conditions

ABSTRACT Uneven maturation in canola is an important challenge for its management in regions subject to frost and high rainfall at the end of the cycle. In order to identify practices to maximize grain yield under these growing conditions, this work evaluated the effects of desiccation with herbicides at different phenological stages on Hyola 433, one of the most commonly used hybrids in Brazil. The experiment was conducted in a randomized block design with four repetitions in a 6 x 4 factorial scheme, with five herbicides: paraquat, diquat and ammonium glufosinate at dose of 400 g a.i. ha-1, glyphosate at 1,440 g a.i. ha-1 and saflufenacil at 70 g a.i. ha-1, plus the control, at four phenological stages of silique maturation (G2, G3, G4 and G5). Desiccation at G2 and G3 reduced the oil content and thousand-grain weight on average by 60%, affecting directly grain yield. Desiccation at G4, regardless of herbicide, did not influence thousand-grain weight and oil content, but the use of diquat reduced canola yield by 187 kg ha-1. In the desiccation at G5, none of the herbicides led to differences compared to the control for thousand-grain weight, yield and oil content, and it allowed harvest to be brought forward by five days. In general, the crop presents adequate responses to the desiccation with different herbicides at the phenological stages G4 and G5.

scholarly journals Nitrogen topdressing and application ways of fluazifop-p-butyl + fomesafen in weed control and agronomic performance of common bean

2015 ◽  
Vol 87 (4) ◽  
pp. 2301-2307 ◽  
Author(s):  
MATHEUS G. SILVA ◽  
ORIVALDO ARF ◽  
PAULO E. TEODORO
Keyword(s):  
Common Bean ◽  
Weed Control ◽  
Yield Components ◽  
Dry Matter ◽  
Block Design ◽  
Agronomic Performance ◽  
Randomized Block Design ◽  
Bean Yield ◽  
Leaf N Content ◽  
Leaf N

ABSTRACT The objective of this study was to investigate the effect of interaction between nitrogen topdressing and different application ways (active ingredients) a.i. fluazifop-p-butyl + fomesafen in weed control and agronomic performance of common bean. The experiment was conducted during winter 2003 in Selvíria/MS. The experimental design used was a randomized block design with four replications in a factorial scheme 2x7. The first factor was composed by the absence or presence of nitrogen topdressing, while the second factor consisted of different application ways of fluazifop-p-butyl + fomesafen. The following variables were measured: leaf N content, dry matter of plants, yield components (number of pods plant-1, number of grains plant-1, the average number of grains pod-1 and mass of 100 grains), grain yield, phytotoxicity and weed control percentage. The nitrogen topdressing with 75 kg ha-1provided higher dry matter of plants, higher weed control and higher common bean yield of irrigated winter. In the absence of nitrogen topdressing in the application of urea before or together to fluazifop-p-butyl + fomesafen increased their effectiveness in controlling weeds without interference in the agronomic performance of common bean.

scholarly journals Insights into the Positive Effect of Pyraclostrobin on Sugarcane Productivity

Agronomy ◽  
2018 ◽  
Vol 8 (7) ◽  
pp. 122 ◽  
Author(s):  
Amanda Moreira Lopes ◽  
Pedro Schumacher ◽  
Aurora Terylene Pérez Martínez ◽  
Antônio Paulino da Costa Netto ◽  
Antonio Chalfun-Junior
Keyword(s):  
Block Design ◽  
Positive Influence ◽  
Randomized Block Design ◽  
Rate Of Photosynthesis ◽  
Enzyme Superoxide Dismutase ◽  
Management Techniques ◽  
Stalk Yield ◽  
Sugarcane Productivity ◽  
High Yields ◽  
Positive Effect

Achieving high yields is a challenge for sugarcane producers due to the diverse environmental conditions to which the crop is subjected. In tropical and subtropical regions, where sugarcane is typically cultivated, crop diseases are common. This necessitates the development of disease management techniques. Among these techniques, chemical control is of particular significance due to the development of new antifungal agents, such as pyraclostrobin. For some crops, pyraclostrobin has a positive influence on yield due to its effects on plant physiology. The aim of this study was to evaluate the physiological responses and yield of three sugarcane cultivars treated with the fungicide, pyraclostrobin. The experiment was performed in a randomized block design (RBD) with a split-plot arrangement; the variables analyzed were the application or non-application of fungicide in the plots and, in the subplots, the evaluation times after fungicide application. Both the rate of photosynthesis and the antioxidant enzyme (Superoxide Dismutase, Catalase and Ascorbate Peroxidades) activity increased in plants treated with fungicide in comparison to untreated plants, and in the RB855156 cultivar the stomatal conductance, transpiration, and nocturnal respiratory rate were increased. Furthermore, application of pyraclostrobin increased stalk yield and the green biomass index in the RB855156 and RB86751 sugarcane cultivars. In certain cultivars of sugarcane, application of pyraclostrobin leads to an increased yield.

scholarly journals PENGARUH PEMBERIAN PUPUK ORGANIK CAIR NIRA AREN (Arenga pinnata MERR) TERHADAP PERTUMBUHAN TANAMAN KANGKUNG DARAT (Ipomea reptans POIR)

2018 ◽  
Vol 8 (2) ◽  
pp. 50-55
Author(s):  
Lukman Arif
Keyword(s):  
Block Design ◽  
Organic Fertilizer ◽  
Leaf Length ◽  
Single Factor ◽  
Randomized Block Design ◽  
Palm Juice ◽  
Spinach Plant ◽  
Palm Sugar ◽  
Number Of Leaves ◽  
The Right

This study aims to determine to determine the effect of land spinach plant growth due to the provision of liquid organic fertilizer palm sugar and to determine the right concentration of palm sugar palm POC to the growth of land spinach plants. This experiment used a single factor randomized block design consisting of 4 replications of 4 treatments. The best experimental results on plant height and number of leaves, leaf length and leaf width aged 14 and 24 HST were influenced by the use of palm juice 40 ml / L water with a height of 19.59 cm and 32.13 cm number of leaves 6.34 and 12.25 strands, leaf length 13.71 and 15.75 while leaf widths are 1.74 and 3.48 cm.

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

Nativa ◽  
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. 

scholarly journals Control of Conyza spp. with sequential application of glufosinate in soybean pre-sowing

2020 ◽  
Vol 50 (9) ◽  
Author(s):  
Alfredo Junior Paiola Albrecht ◽  
Leandro Paiola Albrecht ◽  
André Felipe Moreira Silva ◽  
Romulo Augusto Ramos ◽  
Natália Buttini Corrêa ◽  
...  
Keyword(s):  
Plant Height ◽  
Seed Production ◽  
Management System ◽  
Block Design ◽  
Agronomic Performance ◽  
General Control ◽  
Crop Injury ◽  
Randomized Block Design ◽  
Soybean Plants

ABSTRACT: Conyza spp. is among the main weeds reported worldwide. Due to its aggressiveness, such as high seed production and dispersion, and the growing reports of biotypes resistant to glyphosate, paraquat, and other herbicides, different control practices are required. Thus, this study aimed to evaluate the efficacy of herbicides with sequential application of glufosinate in soybean pre-sowing for control of Conyza spp. with indicative of resistant to paraquat. The study was carried out in the field, at Assis Chateaubriand and Palotina, state of Paraná, Brazil, in the 2018/19 season. The experiments were conducted in a randomized block design with four replications. The treatments consisted in application of glyphosate, 2,4-D, saflufenacil, glufosinate, saflufenacil/imazethapyr, diclosulam, paraquat/diuron, paraquat and imazethapyr/flumioxazin, at different combinations, in soybean pre-sowing. Control of Conyza spp., crop injury to soybean plants and variables related to agronomic performance (plant height and yield) were evaluated. All treatments were selective for soybean, which showed stronger crop injury in the presence of diclosulam herbicide, but this did not compromise soybean agronomic performance. In general, control levels were high for the treatments used. Except for paraquat treatments, in the area with the highest frequency of Conyza spp. with indicative of resistant to paraquat, and imazethapyr/flumioxazin treatment in both areas. These control results emphasized the importance of glufosinate in this management system and showed promising results for saflufenacil/imazethapyr.

scholarly journals GAS EXCHANGE, CHLOROPLAST PIGMENTS AND GROWTH OF PASSION FRUIT CULTIVATED WITH SALINE WATER AND POTASSIUM FERTILIZATION 1

2020 ◽  
Vol 33 (1) ◽  
pp. 184-194
Author(s):  
GEOVANI SOARES DE LIMA ◽  
COSMO GUSTAVO JACOME FERNANDES ◽  
LAURIANE ALMEIDA DOS ANJOS SOARES ◽  
HANS RAJ GHEYI ◽  
PEDRO DANTAS FERNANDES
Keyword(s):  
Gas Exchange ◽  
Saline Water ◽  
Block Design ◽  
Co2 Assimilation ◽  
Passion Fruit ◽  
Water Salinity ◽  
Chloroplast Pigments ◽  
Potassium Fertilization ◽  
Randomized Block Design ◽  
Fruit Plants

ABSTRACT The objective of this study was to evaluate the gas exchange, chloroplast pigments and growth of ‘BRS Rubi do Cerrado’ passion fruit as a function of irrigation with saline water and potassium fertilization in the seedling formation stage. The experiment was conducted under greenhouse conditions in the municipality of Pombal-PB, Brazil. A randomized block design was used in 5 x 2 factorial scheme, corresponding to five levels of water electrical conductivity - ECw (0.3, 1.1, 1.9, 2.7 and 3.5 dS m-1) and two doses of potassium - KD (50 and 100% of the recommendation), with four replicates and two plants per plot. Water salinity from 0.3 dS m-1 reduced the stomatal opening, transpiration, CO2 assimilation and inhibited the growth of ‘BRS Rubi do Cerrado’ passion fruit plants, at 40 days after sowing. There was no CO2 restriction in the substomatal cavity of passion fruit plants grown under water salinity from 0.3 dS m-1. Potassium dose of 150 mg kg-1 of soil, corresponding to 100%, intensified the effect of salt stress on the assimilation rate and instantaneous carboxylation efficiency in 'BRS Rubi do Cerrado' passion fruit. There was interaction between water salinity levels and potassium doses for the chlorophyll a and b contents of 'BRS Rubi do Cerrado' passion fruit.

scholarly journals Respons Pertumbuhan dan Rendemen Minyak Klon Nilam (Pogostemon cablin Benth) terhadap Aplikasi Berbagai Dosis Urea (Growth Response And Yield Of Patchouli Clones (Pogostemon Cablin Benth) On Dose Urea Various Applications)

2020 ◽  
pp. 109-119
Author(s):  
Retno Ayu Diah Pangestu ◽  
M. Tahir ◽  
Fatahillah Fatahillah
Keyword(s):  
Block Design ◽  
Dry Weight ◽  
Optimal Dose ◽  
Fertilizer Application ◽  
Control Treatment ◽  
Randomized Block Design ◽  
Best Response ◽  
Pogostemon Cablin ◽  
Wet Weight ◽  
The Right

Patchouli (Pogostemon cablin Benth) is a plant that produces essential oils and important foreign exchange earner for Indonesia. Using superior clones  with the right fertilizer application will increase the yield of patchouli oil. The research aims to obtain patchouli plants that have the best response of urea fertilization application and optimum dosage of urea for patchouli plant growth. The study was conducted at the Politeknik Negeri lampung’s teaching farm in December 2018 until May 2019. The experiment was conducted using a factorial randomized block design (RBD), consisting of two treatment factors, namely the type of urea clone. The first factor is the type of clone consisting of 2 levels, namely NPL 9 clone and Lhokseumawe clone. The second factor is the treatment of urea doses consisting of 4 levels, namely control, 250 kg.ha-1, 300 kg.ha-1, and 350 kg.ha-1. Variables observed included plant’s height, bough, diameter, number of leaves, stalk angle, chlorophyll content, wet weight of plant, wind dry weight of plant, and yield. The results of research showed  NPL 9 clone had a superior appearance and 350 kg.ha-1 of urea dose  was the optimal dose compared to other doses and could increase patchouli yield 2,3% compared to the control treatment.

scholarly journals Agronomic Performance of Soybean With Seeds Treated With an Algae Extract Base Biostimulant

2020 ◽  
Vol 13 (1) ◽  
pp. 147
Author(s):  
Gabriel Bressiani Melo ◽  
Alessandro Guerra da Silva ◽  
Adriano Perin ◽  
Guilherme Braga Pereira Braz ◽  
Christiano Lima Lobo de Andrade
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Natural Compounds ◽  
Soybean Seeds ◽  
Agronomic Performance ◽  
Grain Yields ◽  
Beneficial Effects ◽  
Agronomic Characteristics ◽  
Organic Components ◽  
Randomized Block Design

The use of biostimulants in the treatment of soybean seeds can provide beneficial effects on the crop due to the synergism between the organic components present in products from natural compounds. Due to the scarcity of results of research on biostimulants in the treatment of soybean seeds, the objective of this study was to evaluate the effects of doses of a biostimulant in the treatment of seeds, on agronomic characteristics, productivity components and profitability of soybean culture. Therefore, two experiments were carried out in the field in the 2016/17 and 2017/18 harvests, using a randomized block design with six replications and four treatments referring to doses of 0.00; 0.05; 0.10; and 0.15 L 100 kg seeds-1. The agronomic characteristics of soybeans, grain yield and profitability of using the biostimulant were evaluated. From the obtained results, it can be seen that the dose of 0.15 L 100 kg seeds-1 provided greater profitability in both harvests. In addition, doses above 0.12 L 100 kg seed-1 provide higher grain yields and a higher grain mass, in addition to other productivity components.

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