scholarly journals Production of barueiro seedlings in different substrates

2021 ◽  
pp. 62-68
Author(s):  
Naiara Ferreira Alves ◽  
Ana Claudia Costa ◽  
Júlio Miguel Alvarenga
Keyword(s):  
Growth Parameters ◽  
Dry Mass ◽  
Economic Potential ◽  
Brazilian Cerrado ◽  
Organic Residues ◽  
Soil Humus ◽  
Coffee Husk ◽  
Negative Effect ◽  
Number Of Leaves ◽  
Dipteryx Alata

Barueiro (Dipteryx alata Vog.) is one of the species native to the Brazilian cerrado that has economic potential. Thus, for the implantation of commercial orchards of this fruit tree, it is important to produce quality seedlings. This study aimed to evaluate the growth of barueiro seedlings under different substrates containing organic residues in the municipality  of Nova Xavantina-MT. The experimental design used was randomized blocks (RBD), with 7 treatments (soil (control); soil + bovine manure (2: 1); soil + coffee husk (3: 1); soil + humus (2: 1); soil + coffee husk + humus (3: 1: 1); soil + coffee husk + bovine manure (3: 1: 1); and soil + humus + bovine manure (3: 1: 1)) and 4 replicates, with ten plants per plot, totaling 280 seedlings. Treatments consisted of substrates formulated with different proportions of soil, bovine manure, coffee husk and earthworm humus. Substrate containing only soil (control) provided greater plant height, stem diameter, number of leaves, number of leaflets, shoot and root fresh and dry mass and Dickson Quality Index. In general, residues tested did not favor the growth parameters evaluated, possibly because barueiro is a species native to the Cerrado, not very demanding in soil fertility. Under the conditions of this work, it is recommended the use of soil in the formulation of substrates to produce barueiro seedlings. The addition of organic matter to the soil had negative effect on seedling development.

scholarly journals Influence of weed infestation on morphological parameters of maize (Zea mays L.)

2011 ◽  
Vol 50 (No. 8) ◽  
pp. 371-378 ◽  
Author(s):  
P. Fuksa ◽  
J. Hakl ◽  
D. Kocourková ◽  
M. Veselá
Keyword(s):  
Zea Mays L ◽  
Vegetation Period ◽  
Dry Mass ◽  
Morphological Characters ◽  
Silage Maize ◽  
Whole Plant ◽  
Negative Effect ◽  
Weed Infestation ◽  
Number Of Leaves ◽  
Yield Depression

The influence of various ways of regulation in weed infestation of silage maize stands was studied in 1999&ndash;2001. Four variants of stands were compared: 1. without weed eradication (check), 2. mechanically weeded throughout the whole vegetation period, 3. mechanically weeded from the beginning of vegetation till the phase of 5<sup>th</sup> leaf and later on without protection, 4. chemical weeding. The yield of dry mass and morphological characters (height of plants, stem diameter, number of ears per plant etc.) show the substantial negative effect of weed infestation upon the studied parameters. The yield from the check variant reached 8.09 t/ha, from the 2<sup>nd</sup> variant 13.24 t/ha, from the 3<sup>rd</sup> variant 11.46 t/ha and from the 4<sup>th</sup> variant 12.34 t/ha. The decrease of mass in individual parts of plants were observed but their percentage portions were not affected by the level of weed infestation. A high dependence ( = 0.01) between the mass of the whole plant and the ear mass (r = 0.98) was proved. The total number of leaves was not affected by the level of treatment. The results show that the mechanical cultivation of stands at the beginning of vegetation cannot prevent the yield depression cost by weed infestation and the studied parameters cannot reach the level of fully weeded variants.

scholarly journals Defoliation Levels Supported in Soybean Crop With No Harm on Productivity in the Municipality of Parauapebas

2019 ◽  
Vol 11 (17) ◽  
pp. 227 ◽  
Author(s):  
L. J. Damasceno ◽  
V. F. A. Silva ◽  
J. N. da Silva ◽  
P. A. Silva ◽  
C. C. Lima ◽  
...  
Keyword(s):  
Grain Yield ◽  
Leaf Area ◽  
Direct Action ◽  
Control Plant ◽  
Dry Mass ◽  
Soybean Cultivars ◽  
Leaf Dry Mass ◽  
Negative Effect ◽  
Number Of Leaves ◽  
Plant Length

The reduction in the leaf area is one of the causes in the fall in soybean (Glycine max) productivity as it depends on the production of photoassimilates generated by the leaves, so any factor that interferes in its leaf area may affect the production. The attack of defoliating insects is among such factors. They cause a marked drop in grain yield due to its direct action, therefore, reducing the leaf area, consequently reducing the photosynthetic rate of the plant. The agronomic characteristics of the cultivars may interfere on the level of tolerance of the plant to this type of stress. The objective of this study was to evaluate the influence of defoliation levels on the vegetative and reproductive stages on the development and yield of grains in soybean cultivars. The experimental design was in randomized blocks, in a 2&times;11&times;2 factorial scheme, with four replicates. Factors consisted of defoliation stage (vegetative and reproductive), treatment levels (T1-control plant and ten treatments of artificial defoliation) and soybean cultivars (BRS 9090 RR and BRS 8890 RR). The following variables were evaluated: grain yield, dry mass of the pod, leaf dry mass, stem and root dry mass, plant height, stem diameter, number of leaves per plant, length and width of roots. It was observed that the defoliation had a negative effect on the productivity components of the cultivars, with the highest decrease in the reproductive stage, except for the treatment R5, 100% defoliation at the R5 stage, which was also reduced. In relation to the cultivars, the BRS 8890 RR was 27% better in grain yield in relation to BRS 9090 RR.

scholarly journals Wood Ash as a Corrective and Fertilizer in Safflower Crop in Oxisol of Brazilian Cerrado

2018 ◽  
Vol 10 (9) ◽  
pp. 412
Author(s):  
Edna M. Bonfim-Silva ◽  
Tulio M. Santos ◽  
Luana G. A. Dourado ◽  
Camila T. R. Silva ◽  
William Fenner ◽  
...  
Keyword(s):  
Plant Height ◽  
Soil Ph ◽  
Dry Mass ◽  
Wood Ash ◽  
Stem Diameter ◽  
Experimental Unit ◽  
External Diameter ◽  
Brazilian Cerrado ◽  
Randomized Design ◽  
Number Of Leaves

This study aimed at estimating the wood ash as a corrective and fertilizer in the safflower crop. This study was done with respect to the development, growth, and production of safflower in response to the wood ash doses applied to Oxisol of the Brazilian Cerrado biome. Adopting the completely randomized design and using five wood ash doses (0, 8, 16, 24, 32 g dm-3) and six replicates, the experiments were performed under greenhouse conditions. Each experimental unit included a 2 dm3 pot, filled with soil that had been incubated earlier for 30 days. The variables studied included soil pH, plant height (cm), stem diameter (mm), number of leaves (plant-1), SPAD index, internal and external diameters of the chapters (cm), number of chapters (plant-1), chapters dry mass (g pot-1), shoot dry mass (g pot-1), volume (cm3 pot-1) and root dry mass (g pot-1) Analysis of variance and subsequent regression test were performed for all the data using SISVAR software, at 5% probability for both. The variables internal and external diameter of the chapters and root volume showed no significant differences. The soil pH revealed a significant effect of the wood ash application tending towards linearity, as did the other vegetative variables of plant height, stem diameter, number of leaves and SPAD index. The productive constituents exhibited improved development when the wood ash was applied to the soil in doses of around 24 g dm-3 or more.

scholarly journals Macronutrient fertilizers on basil growth and yield

2020 ◽  
Vol 11 ◽  
pp. e3200
Author(s):  
Janderson Carmo Lima ◽  
Marilza Neves Nascimenro ◽  
Uasley Caldas Oliveira ◽  
Anacleto Ranulfo Santos ◽  
Alinsmario Leite Silva
Keyword(s):  
Leaf Area ◽  
Growth Parameters ◽  
Dry Mass ◽  
Growth And Yield ◽  
Randomized Design ◽  
Leaf Dry Mass ◽  
Number Of Leaves ◽  
Completely Randomized Design ◽  
Reference Doses ◽  
Different Doses

The objective of this work was to determine the macronutrient doses that allow the highest phytomass yield and growth of basil plants. The experiment was carried out in the experimental area of ​​the Federal University of Recôncavo da Bahia, in Cruz das Almas, BA, in a greenhouse. The treatments were obtained according to the Baconian matrix statistical arrangement, in which one of the nutrients is supplied in variable amounts, while the others are kept at a referential level. Six nutrients (nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg) and sulfur (S)) were evaluated in three different doses, and two additional treatments, one with reference doses and another without nutrient addition, totaling 20 treatments that were arranged in a completely randomized design with five replications, totaling 100 experimental units. At 50 days after treatment distribution, the growth parameters were evaluated: Plant height, number of leaves, leaf dry mass, stem, root and leaf area. It was observed that the highest leaf dry mass accumulation was estimated with the dose of 250 mg dm³ of N giving an average of 8.01g per plant, being significantly higher when compared to all other tested elements, this parameter is extremely relevant because the leaves are characterized as the main product of this species. Phosphorus doses allowed significant results in height and leaf area, whereas K favored higher leaf emission. Positive responses were verified for nutrients Ca, Mg and S in all parameters tested at levels above those tested as reference.

scholarly journals Adição de gesso agrícola e cinza de madeira ao substrato no desenvolvimento de mudas de baruzeiro (Dipteryx alata Vog)

2015 ◽  
Vol 10 (2) ◽  
pp. 206-212
Author(s):  
C. A. Freitas ◽  
C. J. Silva ◽  
C. A. Silva ◽  
J. A. Almeida ◽  
N. S. Rincon
Keyword(s):  
Dry Matter ◽  
Dry Mass ◽  
Wood Ash ◽  
Main Root ◽  
Initial Development ◽  
Randomized Design ◽  
Number Of Leaves ◽  
Completely Randomized Design ◽  
Growth Of Seedlings ◽  
Dipteryx Alata

O objetivo do trabalho foi avaliar o desenvolvimento de mudas de baruzeiro (Dipteryx alata Vog) em função de proporções de gesso (0%; 1,6%; 3,2%; 4,8% e 6,4%) com base em volume e adubação com cinza de madeira (ausência e presença) misturadas ao substrato Bioplant®. Constituiu-se assim um esquema fatorial 5x2, em delineamento inteiramente ao acaso, com três repetições e quatro plantas por parcela. O experimento foi conduzido de janeiro a março de 2009, em viveiro com cobertura e laterais de sombrite preto (50% da luminosidade natural), situado na Fazenda Japão, município de Orizona, Goiás. Como recipiente foram utilizados sacos de polietileno de 15 x 25 cm, onde colocou-se uma sementes por recipiente, ficando a extremidade superior da semente cerca de 2,0 cm de profundidade. As irrigações foram realizadas diariamente, no período da tarde. Aos 152 dias após a semeadura, avaliou-se altura de muda (AM), diâmetro de caule (DC), número de folha (NF), número de folíolos por folha (NFF), número de folíolos por planta (NFP), comprimento da raiz principal (CR), massa da matéria seca das raízes (MSR), massa seca da parte aérea (MSPA), massa seca total (MSTO) e índice de qualidade de Dickson (IQD). O gesso agrícola proporcionou melhor desenvolvimento inicial das mudas de baruzeiro, no entanto sua associação com cinzas de madeira, juntamente com o substrato, não favoreceu o desenvolvimento das mudas.Addition of agricultural plaster and wood ash to substrate in baruzeiro (Dipteryx alata Vog) seedlings developingAbstract: This study aimed to evaluate the baruzeiro seedlings development in function of plaster proportions (0%, 1.6%, 3.2%, 4.8% and 6.4 %) based on volume and fertilization with wood ash (absence and presence) added to the substrate Bioplant ®. It constitutes therefore a 5x2 factorial arrangement, in a completely randomized design with three replications and four plants per plot. The experiment was conducted from January to March 2009, in coverage nursery and side with shade screen (50% of natural light), located in Fazenda Japão, Orizona county, Goiás. As container was used polythene bags of 15 x 25 cm, which was placed one seeds per container, with the upper end of the seed approximately 2.0 cm depth. The irrigation was performed daily in the afternoon. At 152 days after sowing, was evaluated seedling height (SH), stem diameter (SD), sheet number (SN), number of leaflets per leaf (NLL), number of leaves per plant (NLP), length the main root (LR), dry mass of roots (DMR), dry mass of aerea part (DMAP), total dry matter (TDM) and Dickson quality index (DQI). The plaster provided better initial development of seedlings baruzeiro, however its association with wood ashes, along with the substrate, didn't favor the growth of seedlings.

scholarly journals Phosphate and nitrogen fertilization in the production of Barueiro (Dipteryx alata Vog.) seedlings

2019 ◽  
Vol 41 (6) ◽  
Author(s):  
Erika Katianne Costa Pinho ◽  
Ana Claudia Costa ◽  
Cesar Crispim Vilar ◽  
Manoel Euzébio de Souza ◽  
Aline Borges Vilela Silva ◽  
...  
Keyword(s):  
Nitrogen Fertilization ◽  
Dry Mass ◽  
Phosphorus Concentration ◽  
State University ◽  
Mato Grosso ◽  
Phosphate Fertilization ◽  
Nitrogen Concentrations ◽  
Number Of Leaves ◽  
Plant Stem ◽  
Dipteryx Alata

Abstract Barueiro (Dipteryx alata Vog.), a fruit tree native to the Brazilian cerrado, has aroused the interest of producers and consumers due to its almond highly appraised and valued by local markets. To obtain quality barueiro seedlings, balanced fertilization is required, with special attention to the supply of phosphorus and nitrogen, essential for seedling growth and establishment in the field. The aim of this study was to evaluate the growth of barueiro seedlings produced with different phosphate and nitrogen concentrations in Nova Xavantina – MT. The experiment was conducted at the seedling nursery of the Mato Grosso State University (UNEMAT), Campus of Nova Xavantina - MT, from December 2017 to April 2018. The experimental design was randomized blocks (DBC), in a 5 × 2 factorial scheme, corresponding to 5 phosphorus concentrations and 2 nitrogen concentrations, with 10 treatments, 4 blocks and 10 plants per plot, totalizing 400 seedlings. The applied concentrations were 0, 150, 300, 450 and 600 mg kg-1 P2O5 and 0 and 250 mg kg-1 N. The following variables were evaluated: plant height, plant stem diameter, number of leaves, number of leaflets, fresh and shoot and root dry mass and Dickson’s Quality Index. Significant interaction between phosphorus and nitrogen concentrations for all traits evaluated was observed, except for root dry mass. The greatest growth of barueiro seedlings was obtained when the highest phosphorus concentration (600 mg kg-1de P2O5) was used, associated to nitrogen fertilization of 250 mg kg-1. There was no isolated effect of phosphate fertilization on the growth of barueiro seedlings without nitrogen application.

Effect of rhizobacteria strains on the induction of resistance in barley genotypes against Cochliobolus sativus

2020 ◽  
Vol 13 (2) ◽  
pp. 83-92 ◽  
Author(s):  
A. Adam
Keyword(s):  
Plant Growth ◽  
Pseudomonas Putida ◽  
Growth Parameters ◽  
Disease Incidence ◽  
Dry Weight ◽  
Cochliobolus Sativus ◽  
Resistance Level ◽  
Wet Weight ◽  
Number Of Leaves ◽  
Barley Genotypes

SummaryEnhancement of the resistance level in plants by rhizobacteria has been proven in several pathosystems. This study investigated the ability of four rhizobacteria strains (Pseudomonas putida BTP1 and Bacillus subtilis Bs2500, Bs2504 and Bs2508) to promote the growth in three barley genotypes and protect them against Cochliobolus sativus. Our results demonstrated that all tested rhizobacteria strains had a protective effect on barley genotypes Arabi Abiad, Banteng and WI2291. However, P. putida BTP1 and B. subtilis Bs2508 strains were the most effective as they reduced disease incidence by 53 and 38% (mean effect), respectively. On the other hand, there were significant differences among the rhizobacteria-treated genotypes on plant growth parameters, such as wet weight, dry weight, plant height and number of leaves. Pseudomonas putida BTP1 strain was the most effective as it significantly increased plant growth by 15-32%. In addition, the susceptible genotypes Arabi Abiad and WI2291 were the most responsive to rhizobacteria. This means that these genotypes have a high potential for increase of their resistance against the pathogen and enhancement of plant growth after the application of rhizobacteria. Consequently, barley seed treatment with the tested rhizobacteria could be considered as an effective biocontrol method against C. sativus.

scholarly journals Application of Exogenous Protectants Mitigates Salt-Induced Na+ Toxicity and Sustains Cotton (Gossypium hirsutum L.) Seedling Growth: Comparison of Glycine Betaine and Salicylic Acid

Plants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 380
Author(s):  
Abdoul Kader Mounkaila Hamani ◽  
Jinsai Chen ◽  
Mukesh Kumar Soothar ◽  
Guangshuai Wang ◽  
Xiaojun Shen ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Glycine Betaine ◽  
Growth Parameters ◽  
Biomass Accumulation ◽  
Nacl Stress ◽  
Soil Salinization ◽  
Sodium Toxicity ◽  
Negative Effect ◽  
Effective Conditions ◽  
A Current

Soil salinization adversely affects agricultural productivity. Mitigating the adverse effects of salinity represents a current major challenge for agricultural researchers worldwide. The effects of exogenously applied glycine betaine (GB) and salicylic acid (SA) on mitigating sodium toxicity and improving the growth of cotton seedlings subjected to salt stress remain unclear. The treatments in a phytotron included a control (CK, exogenously untreated, non-saline), two NaCl conditions (0 and 150 mM), four exogenous GB concentrations (0, 2.5, 5.0, and 7.5 mM), and four exogenous SA concentrations (0, 1.0, 1.5, and 2.0 mM). The shoot and roots exposed to 150 mM NaCl without supplementation had significantly higher Na+ and reduced K+, Ca2+, and Mg2+ contents, along with lowered biomass, compared with those of CK. Under NaCl stress, exogenous GB and SA at all concentrations substantially inversed these trends by improving ion uptake regulation and biomass accumulation compared with NaCl stress alone. Supplementation with 5.0 mM GB and with 1.0 mM SA under NaCl stress were the most effective conditions for mitigating Na+ toxicity and enhancing biomass accumulation. NaCl stress had a negative effect on plant growth parameters, including plant height, leaf area, leaf water potential, and total nitrogen (N) in the shoot and roots, which were improved by supplementation with 5.0 mM GB or 1.0 mM SA. Supplementation with 5.0 mM exogenous GB was more effective in controlling the percentage loss of conductivity (PLC) under NaCl stress.

scholarly journals Rhizosphere-enriched microbes as a pool to design synthetic communities for reproducible beneficial outputs

2019 ◽  
Author(s):  
Maria-Dimitra Tsolakidou ◽  
Ioannis A Stringlis ◽  
Natalia Fanega-Sleziak ◽  
Stella Papageorgiou ◽  
Antria Tsalakou ◽  
...  
Keyword(s):  
Antifungal Activity ◽  
Fungal Pathogens ◽  
Growth Parameters ◽  
Tomato Plants ◽  
Beneficial Effects ◽  
Negative Effect ◽  
Tomato Growth ◽  
In Vitro Antifungal Activity

Abstract Composts represent a sustainable way to suppress diseases and improve plant growth. Identification of compost-derived microbial communities enriched in the rhizosphere of plants and characterization of their traits, could facilitate the design of microbial synthetic communities (SynComs) that upon soil inoculation could yield consistent beneficial effects towards plants. Here, we characterized a collection of compost-derived bacteria, previously isolated from tomato rhizosphere, for in vitro antifungal activity against soil-borne fungal pathogens and for their potential to change growth parameters in Arabidopsis. We further assessed root-competitive traits in the dominant rhizospheric genus Bacillus. Certain isolated rhizobacteria displayed antifungal activity against the tested pathogens and affected growth of Arabidopsis, and Bacilli members possessed several enzymatic activities. Subsequently, we designed two SynComs with different composition and tested their effect on Arabidopsis and tomato growth and health. SynCom1, consisting of different bacterial genera, displayed negative effect on Arabidopsis in vitro, but promoted tomato growth in pots. SynCom2, consisting of Bacilli, didn't affect Arabidopsis growth, enhanced tomato growth and suppressed Fusarium wilt symptoms. Overall, we found selection of compost-derived microbes with beneficial properties in the rhizosphere of tomato plants, and observed that application of SynComs on poor substrates can yield reproducible plant phenotypes.

scholarly journals PHOSPHATE AND POTASSIUM FERTILIZATION FOR RADISH GROWN IN A LATOSOL WITH A HIGH CONTENT OF THESE NUTRIENTS

2017 ◽  
Vol 30 (2) ◽  
pp. 412-419 ◽  
Author(s):  
ARTHUR BERNARDES CECÍLIO FILHO ◽  
ALEXSON FILGUEIRAS DUTRA ◽  
GILSON SILVERIO DA SILVA
Keyword(s):  
Ground Water ◽  
Factorial Design ◽  
Leaf Area ◽  
Crop Yields ◽  
Dry Mass ◽  
Plant Leaf ◽  
Potassium Fertilization ◽  
Chemical Fertilization ◽  
Number Of Leaves ◽  
Better Than

ABSTRACT The intensive cultivation of vegetables with frequent chemical fertilization may cause accumulation of nutrients in the soil. This, in turn, may reduce crop yields and damage the environment due to contamination of ground water and rivers. Thus, to increase the effects of P (0, 100, 200, 300 and 400 kg ha -1 of P2O5) and K (0, 60, 120, 180 and 240 kg ha-1 of K2O) doses on the growth and productivity of radish cultivars (Sakata 19 and Sakata 25) in a soil with high levels of these nutrients, two experiments were conducted in randomized blocks with the factors cultivars and doses arranged in a 2 x 5 factorial design with three replications. Number of leaves per plant, leaf area, shoot and root dry mass, total and commercial productivity, percentage of cracked roots and P and K contents in the plant and in the soil were evaluated. The Sakata 19 cultivar performed better than the Sakata 25 in both experiments. The fertilization with P or K did not influence the growth and the productivity of both radish cultivars. Therefore, both cultivars of radish evaluated do not need to be fertilized with P and K when planted in a Latosol with high levels of these nutrients.

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