scholarly journals Growth of papaya seedlings on substrate consisting of poultry litter biochar

2021 ◽  
Vol 42 (6supl2) ◽  
pp. 3721-3740
Author(s):  
Laysa Gabryella de Souza Laurentino ◽  
◽  
Lucia Helena Garófalo Chaves ◽  
Antônio Ramos Cavalcante ◽  
Jean Pereira Guimarães ◽  
...  
Keyword(s):  
Root System ◽  
Crop Yield ◽  
Quality Index ◽  
Poultry Litter ◽  
Randomized Design ◽  
Dry Biomass ◽  
Number Of Leaves ◽  
Poultry Litter Biochar ◽  
Completely Randomized Design ◽  
Dickson Quality Index

The choice of a substrate that meets the nutritional and physical demands of papaya seedlings with the use of organic wastes is directly linked to increases in crop yield and is an important environmental and economic alternative. Aiming to produce good-quality papaya seedlings while considering the composition and availability of substrates, this study examined the influence of applying increasing rates of poultry litter biochar as a substrate component in the production of papaya seedlings. The study was developed in a protected environment belonging to the Federal University of Campina Grande (UFCG). The experiment was laid out in a completely randomized design with a 6 × 2 factorial arrangement consisting of six rates of biochar (4, 8, 12, 16 and 20 t ha-1 and the control) and two papaya cultivars (Formosa and Ouro), with four replicates. Plant height, stem diameter, number of leaves and leaf area were evaluated 90 days after sowing. The fresh and dry biomass of shoots and root system and the Dickson Quality Index were also evaluated. In conclusion, the rates that provided good development of papaya seedlings were 8 and 16 t ha-1, and papaya cultivar Ouro showed better growth results.

scholarly journals Agricultural residues as substrates in the production of formosa papaya, okra and zucchini seedlings

2020 ◽  
Vol 36 (6) ◽  
Author(s):  
Paola Lo Monaco ◽  
Larissa Ionara Silva Paula ◽  
Paola Honorato Salla ◽  
Ismail Ramalho Haddade ◽  
Gustavo Haddad Souza Vieira ◽  
...  
Keyword(s):  
Root Length ◽  
Quality Index ◽  
Dry Mass ◽  
High Potential ◽  
Grape Pomace ◽  
Alternative Substrate ◽  
Randomized Design ◽  
Number Of Leaves ◽  
Organic Compost ◽  
Dickson Quality Index

Using residues generated in agriculture to produce seedlingsis an economically interesting alternative, besides being a way to reduce the environmental impacts caused by their inadequate disposal. This study aimed to evaluate the potential of using coffee chaff (CC) and organic compost (OC) as substrate components for the production of Formosa papaya seedlings and the potential of grape pomace (GP), a vitiviniculture residue, in the composition of substrates for the production of okra and zucchini seedlings. We carried out two trials in a completely randomized design (CRD): the first had seven treatments and six replicates: T0: 100% commercial substrate Bioplant® (CS); from T1 to T6: increasing proportions of CC and decreasing of CC: 10/90; 20/80; 30/70; 40/60; 50/50 e 60/40%. The second had six treatments and six replicates, with increasing proportions of GP and decreasing proportions of CS: 0/100; 10/90; 20/80; 30/70; 40/60 and 50/50%.In the first trial we evaluated the number of leaves, root length, seedling height, stem diameter, shoot dry mass, root dry mass, total dry mass and Dickson Quality Index (DQI) at 59 days after sowing.The second trialwas performed at 12 and 18 DAS and we analyzed the number of leaves, plant height, root length, collar diameter, shoot dry mass, root dry mass, total dry mass and Dickson Quality Index (DQI). Variables that met the assumptions of normality and homoscedasticity were subjected to Dunnett’s test. The substrate composed of coffee chaff and organic compost has a high potential to be used as an alternative substrate due to promote better quality of papaya seedlings compared to the commercial substrate. Alternative substrate containing 60% coffee chaff and 40% organic compost is recommended for the production of  Formosa papaya seedlings in tubes. The grape pomace (GP) has a high potential to be used as component in substrate for the production of okra and zucchini seedlings compared to the commercial substrate (CS) only. Alternative substrate composed of 50% GP and 50% CS is recommended for the production of zucchini seedlings, while substrate composed of 10% GP and 90% CS is recommended for the production of okra seedlings.

scholarly journals INTERACTIONS OF BIOCHAR AND ORGANIC COMPOUND FOR SEEDLINGS PRODUCTION OF Magonia pubescens A. St.-Hil.

2015 ◽  
Vol 39 (4) ◽  
pp. 655-661 ◽  
Author(s):  
Stefany Lorrayny Lima ◽  
Suelen Tamiozzo ◽  
Edwin Camacho Palomino ◽  
Fabiano André Petter ◽  
Ben Hur Marimon-Junior
Keyword(s):  
Organic Compound ◽  
Quality Index ◽  
The State ◽  
Cattle Manure ◽  
State University ◽  
Mato Grosso ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Dickson Quality Index

ABSTRACTThe objective of this study was to test the hypothesis that biochar, applied with cattle manure, promotes better development of seedlings of Magonia pubescens St. Hil. The experiment was conducted at the State University of Mato Grosso, Nova Xavantina, Brazil, in 2011. We used a completely randomized design, with twelve treatments and three replications. The substrates formed by the higher levels of cattle manure plus biochar (30%) provided better results of height, diameter and aerial biomass. However, the Dickson Quality Index has not confirmed the quality of seedlings in these treatments. We also observed that the doses of biochar (20 and 30%) when added separately to the Latosol, are not efficient for the growth improvement of the seedlings. Based on the present results, we validate the hypothesis that substrates formed with a mixture of cattle manure and biochar are effective to improve the production of seedlings of M. pubescens.

scholarly journals Light intensity and type of container on producing Cassia grandis L. f. seedlings

2015 ◽  
Vol 19 (10) ◽  
pp. 939-945
Author(s):  
Caio C. P. Leal ◽  
Salvador B. Torres ◽  
Rômulo M. O. de Freitas ◽  
Narjara W. Nogueira ◽  
Raul M. de Farias
Keyword(s):  
Quality Index ◽  
Dry Mass ◽  
Wood Powder ◽  
Probability Level ◽  
Full Sunlight ◽  
Tukey Test ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Clay Pots ◽  
Dickson Quality Index

ABSTRACTThis study aimed to determine the effects of the luminosity and type of container on producing Cassia grandis seedlings. Thus, in a substrate composed by topsoil + wood powder (1:1) the seedlings were grown into plastic tubets containing 0.3 dm3 of such substrate, or into plastic pots containing 1.0 dm3 of the same substrate, and subjected to 50 and 25% shading or full sunlight. The assessments were performed every two weeks by measuring plant height and stem diameter, during eight weeks period. At the end of this period, the leaf area, dry mass of shoots and roots, the ratio between height of plant/diameter of stem, and the Dickson quality index were also assessed. The experiment was carried out in a completely randomized design with treatments arranged in a 3 x 2 factorial [3 luminosity levels (50, 25% shading and full sunlight) x 2 types of containers (plastic tubets and clay pots)] with four replicates of 10 seedlings each. Means were compared by Tukey test at 0.05 probability level and adjustments for the non-linear regression polynomial curves for the assessed characteristics were computed in function of time. Shadings of 25 and 50% were the best alternatives to luminosity; and the tubets were the most suitable containers for production of Cassia grandis seedlings.

scholarly journals Agricultural residues as a substrate in the production of eggplant seedlings

2017 ◽  
Vol 35 (4) ◽  
pp. 527-533
Author(s):  
Lorena AM Meneghelli ◽  
Paola AVL Monaco ◽  
Ismail R Haddade ◽  
Caroline M Meneghelli ◽  
Karoline M Almeida
Keyword(s):  
Electrical Conductivity ◽  
Agricultural Residues ◽  
Coconut Fiber ◽  
Treatment Groups ◽  
Randomized Design ◽  
Whole Plant ◽  
Coffee Beans ◽  
Dry Biomass ◽  
Number Of Leaves ◽  
Completely Randomized Design

ABSTRACT The objective of this study was to evaluate the growth variables of eggplants seedlings produced in substrates with different compositions in agricultural residues. The experiment was carried out in a completely randomized design, with five treatments and ten replicates, with the following treatments: T0= Bioplant commercial substrate (control); T1= 10% of moinha (dried residue of coffee beans) + 15% of coconut fiber + 5% of eggshell + 70% of commercial substrate; T2= 20% of moinha + 15% of coconut fiber + 5% of eggshell + 60% of commercial substrate; T3= 30% of moinha + 15% of coconut fiber + 5% of eggshell + 50% of commercial substrate; T4= 40% of moinha+ 15% of coconut fiber + 5% of eggshell + 40% of commercial substrate. The evaluated variables were electric conductivity of the substrate, number of leaves, plant height, stem diameter; and fresh and dry biomass of shoot, root, and of the whole plant. Growing doses of moinha provide increased electrical conductivity in substrate. The treatment groups containing increasing proportions of moinha in the substrate composition present the highest values of growth variables in relation to the commercial substrate. Except shoot, root and total dry biomass, the substrate with 10 and 20% of moinha have the highest values of analyzed variables in eggplant seedlings.

scholarly journals EFFECT OF POULTRY LITTER BIOCHAR ON THE NUTRITIONAL STATUS OF CORN1

2021 ◽  
Vol 34 (4) ◽  
pp. 916-925
Author(s):  
JACQUELINE DA SILVA MENDES ◽  
JOSELY DANTAS FERNANDES ◽  
LÚCIA HELENA GARÓFALO CHAVES ◽  
GILVANISE ALVES TITO ◽  
HUGO ORLANDO CARVALLO GUERRA
Keyword(s):  
Nutritional Status ◽  
Poultry Litter ◽  
Leaf Tissue ◽  
Nutrient Concentrations ◽  
Randomized Design ◽  
Opposite Leaf ◽  
Poultry Litter Biochar ◽  
Completely Randomized Design ◽  
Forced Air ◽  
Air Circulation

ABSTRACT Corn, one of the main grain crops in Brazil, needs to have its nutritional requirements fully satisfied to achieve high biological productivity. Thus, the objective of this work was to evaluate the influence of increasing doses of poultry litter biochar on nutrient concentrations in the leaves of hybrid corn BRS 2022 and in the soil after harvest. The experiment was carried out in a completely randomized design, with four replicates, evaluating six doses of biochar (0; 2.02; 4.05; 6.07; 8.10 and 10.12 t ha-1) and the plots composed of one plant per pot with a volume of 20 dm3. The collection of leaves for leaf diagnosis was carried out at the time of flowering, removing the opposite leaf from the ear base in the middle third region. These leaves were dried in a forced air circulation oven, 65 °C, for a period of 48 hours, ground, sieved through 20 mesh and analyzed for the concentrations of macronutrients in the leaf tissue. At the end of the experiment, 83 days after corn sowing, soil samples were collected as a function of the treatments and then analyzed chemically. Biochar application promoted an increase in the leaf contents of N, P and K, resulting in improvements in the nutritional status of plants for these nutrients. The chemical characteristics of the soil, analyzed after the corn harvest, revealed that there was an influence of the doses of biochar on the levels of calcium, organic carbon, potassium and phosphorus.

scholarly journals Ruellia simplex cuttings propagation produced on carnauba waste substrate

2020 ◽  
Vol 14 ◽  
Author(s):  
Taciella Fernandes Silva ◽  
Klayton Antonio Do Lago Lopes ◽  
Janaiane Ferreira Dos Santos ◽  
Ana Paula De Almeida Sousa ◽  
Francisca Gislene Albano-Machado ◽  
...  
Keyword(s):  
Root System ◽  
Aerial Part ◽  
Ornamental Plants ◽  
Dry Mass ◽  
Fresh Mass ◽  
Randomized Design ◽  
Shoot Number ◽  
Significant Difference ◽  
Number Of Leaves ◽  
Completely Randomized Design

The production of quality seedlings is necessary for the trading of ornamental plants. Seedling quality depends on several factors, among these factors, the substrate is highlighted. Thus, this study aimed to evaluate the effect of substrates based on bagana of carnauba, in the production of Ruellia simplex seedlings, by vegetative propagation. A completely randomized design was adopted, with six treatments and four replications. The treatments (substrates) were composed of bagana of carnauba (BC) and soil, in the following proportions: BC0 - 0% BC + 100% of soil; BC20 - 20% BC + 80% of soil; BC40 - 40% BC + 60% of soil; BC60 - 60% BC + 40% of soil; BC80 - 80% BC + 20% of soil; BC100 - 100% BC + 0% of soil. The plot consisted of a plant. After 45 days of cutting, it was evaluated: number of shoots; number of leaves per shoot; diameter of the highest shoot; length of the highest shoot; root length; inflorescence number; number of flowers per inflorescence; leaf area; root volume; aerial part fresh mass; root system fresh mass; aerial part dry mass; and root system dry mass. There was a significant difference for the variables, number of leaves per shoot, diameter and length of the highest shoot, number of flowers per inflorescence, fresh and dry mass of the aerial part. Having a direct relationship between the increase in the proportion of bagana of carnauba volume and the inflorescence number, the substrate 100% of bagana of carnauba is indicated.

scholarly journals QUALITY OF CAMBUCI PEPPER SEEDLINGS IN RESPONSE TO THE APPLICATION OF NUTRIENT SOLUTIONS

2020 ◽  
Vol 7 (4) ◽  
pp. 73-79
Author(s):  
Nicholas Taborda Nordi ◽  
Eduardo Santana Aires ◽  
Thatiane Nepomuceno Alves ◽  
Samara Moreira Perisato ◽  
Antonio Ismael Inácio Cardoso
Keyword(s):  
Quality Index ◽  
Dry Matter ◽  
Stem Diameter ◽  
Control Treatment ◽  
Final Performance ◽  
Randomized Design ◽  
Number Of Leaves ◽  
Nutrient Solutions ◽  
Dickson Quality Index

One of the main stages in the production system of a crop is the production of quality seedlings since it influences the plants' final performance in the field and their production. The study aimed to evaluate different nutrient solutions in the production of Cambuci pepper seedlings. The design used was a complete randomized design, with six treatments corresponding to the nutrient solutions proposed for the pepper crop by Castellane and Araújo, Claudio Roberto, Hoagland, and Arnon, besides the commercial products Plenan® and Biobokashi®, and a control treatment without fertilization, with six replications. The final evaluation was carried out 45 days after sowing. The following variables were analyzed: stem diameter, plant height, leaf dry matter, shoot dry matter, the number of leaves, relative chlorophyll index ("Spad"), and Dickson quality index. The seedlings subjected to the applications of Claudio Roberto and Hoagland and Arnon solutions have the highest heights and number of leaves, the largest stem diameter, shoot dry matter, leaf area, and Dickson quality index with 2.60 and 2.51 mm, 0.54 and 0.62 g, 38.64 and 41.91 cm2, and 0.107; 0.097, respectively. The Hoagland and Arnon nutrient solution provided the best characteristics to produce Cambuci pepper seedlings.

scholarly journals Use of agro-industry residues as substrate for the production of Euterpe precatoria seedlings

2020 ◽  
Vol 50 ◽  
Author(s):  
Cleyton Silva de Araújo ◽  
Aureny Maria Pereira Lunz ◽  
Vanderley Borges dos Santos ◽  
Romeu de Carvalho Andrade Neto ◽  
Sônia Regina Nogueira ◽  
...  
Keyword(s):  
Dry Mass ◽  
Equal Proportion ◽  
Brazil Nut ◽  
Shoot Height ◽  
Randomized Design ◽  
Good Potential ◽  
Number Of Leaves ◽  
Completely Randomized Design ◽  
Fundamental Requirement ◽  
Dickson Quality Index

ABSTRACT The availability of single assai palm (Euterpe precatoria) seedlings with good quality is a fundamental requirement to expand the cultivation of the species. This study aimed to assess the use of fruit agro-industry residues as substrate for producing single assai seedlings. The experiment was carried out under nursery conditions, in a completely randomized design, with four replications and eight plants per plot. Fifteen treatments were evaluated: a commercial substrate, four dry and crushed agro-industrial residues (Brazil nut shell, acerola pit, assai pit and cupuassu peel) and ten combinations of these materials in the proportion of 1:1. The following variables were also measured: shoot height; stem diameter; number of leaves; shoot, root and total dry mass; and Dickson Quality Index score. The substrate formulated with Brazil nut shell + acerola pit stood out for promoting a higher growth and dry biomass, resulting in seedlings with a better quality. The pure assai pit residue was not efficient for producing seedlings, but it showed a good potential when mixed in equal proportion with other materials (e.g. Brazil nut shell and cupuassu peel).

scholarly journals Use of effective microorganisms with phytoprotective ceramics in the initial growth of Theobroma cacao L.

TAYACAJA ◽  
2021 ◽  
Vol 4 (2) ◽  
pp. 02-12
Author(s):  
Nereyda Patty Pérez Palermo ◽  
Ena Vilma Velazco Castro ◽  
Cindy Paola Castro Muñoz
Keyword(s):  
Theobroma Cacao ◽  
Quality Index ◽  
Plant Protection ◽  
Initial Growth ◽  
Effective Microorganisms ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Theobroma Cacao L ◽  
Quality Indexes ◽  
Dickson Quality Index

The research was conducted in the nursery of the National Intercultural University of Amazonia, whose objective was to use effective microorganisms with plant protection ceramics in the initial growth of Theobroma cacao, "common cocoa". The experiment was conducted through a completely randomized design (DCA), with 5 treatments, 10 repetitions and 50 experimental units. The treatments were: T1 (Control); T2 (100 ml of efficient microorganisms (EM) + 20 g of phytoprotective ceramic (CF)); T3 (200 ml of MS + 20 g of CF); T4 (300 ml of EM + 20 g of CF) and T5 (400 ml of EM + 20 g of CF). As a result, the T3 treatment obtained better growth value in height, diameter and specific leaf area with: 25.56 cm, 6.86 mm and 90.77 cm2 / g respectively, compared to the control that reached 19.98 cm. 5.49 mm. 49.32. Regarding the quality indexes, the ratio of aerial dry biomass / dry root biomass (R BSA / RBSR), lignification index (IL), robustness index (IR) and Dickson quality index (DQI), did not show significant differences between the treatments, but the T3 had higher value over the IR with 3.76, the R BSA / RBSR with 2.45 and DQI with 0.85, and the T4 had greater value in the IL with 33.68.

scholarly journals Volume of polyethylene bags for development of papaya seedlings in protected environments

2013 ◽  
Vol 33 (1) ◽  
pp. 11-18 ◽  
Author(s):  
Tatiane A. C. Faria ◽  
Edilson Costa ◽  
Letícia C. de Oliveira ◽  
Tiago L. do Espírito Santo ◽  
Arthur P. da Silva
Keyword(s):  
Quality Index ◽  
Mato Grosso ◽  
Test Container ◽  
Randomized Design ◽  
Polyethylene Bags ◽  
Growing Environment ◽  
Completely Randomized Design ◽  
Mato Grosso Do Sul ◽  
Cultivation Environment ◽  
Dickson Quality Index

The objective of this study was to test container of polyethylene bags and protected environments on the papaya seedlings production, from May to August of 2008, in Aquidauana state of Mato Grosso do Sul (MS), Brazil. Five bags of polyethylene were used: 7.5 cm x 11.5 cm, 205.9 cm³; 8.4 cm x 10.6 cm, 238.1cm³; 10.0 cm x 16.5 cm, 525.2 cm³; 12.0 cm x 12.0 cm, 550.0 cm³ and 15.0 cm x 21.5 cm, 1539.8 cm³. These containers were placed in three protected environments: greenhouse; screened nursery with Sombrite® and screened nursery with Aluminet®. Because there is no replication of growing environment, each one was considered an experiment. For each cultivation environment, it was adopted a completely randomized design with eight replications of two plants each. Initially, data were submitted to analysis of individual variance of the container (for each cultivation environment), then performing the evaluation of the residual mean squares and the combined analysis of these environments for comparison of protected environments. The greenhouse and nursery with thermal reflector screen produced the best seedlings. The bags of 15.0 x 21.5 cm produced the best papaya seedlings. The Dickson Quality Index pointed the nursery with screen of thermal reflector as the environment that produced the most vigorous seedlings, when using the best container.

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