scholarly journals INITIAL DEVELOPMENT OF GABIROBA (Campomanesia adamantium) ACCORDING TO FERTILIZATION WITH NITROGEN AND PHOSPHORUS

2021 ◽  
Vol 8 (2) ◽  
pp. e5825
Author(s):  
Jéssica Rodrigues de Mello Duarte ◽  
Scarlet De Aguiar Basílio ◽  
Nei Peixoto ◽  
Mariana Pina da Silva Berti
Keyword(s):  
Experimental Design ◽  
Plant Height ◽  
Nitrogen Fertilization ◽  
Stem Diameter ◽  
Nitrogen And Phosphorus ◽  
Initial Development ◽  
Tukey Test ◽  
Number Of Leaves ◽  
Plant Emergence ◽  
Different Doses

Campomanesia adamantium (Cambess.) Berg O. is a native of Savanna, popularly known as gabiroba, guavira, or gabiroba-do-campo, and has many uses, with its fruit being consumed fresh or processed. This study aimed to evaluate different doses of phosphorus and nitrogen in the initial development of gabiroba (Campomanesia adamantium) cultivated in pots. Five doses of phosphorus (0, 100, 200, 300, and 400kg ha-1 of P2O5) and three doses of nitrogen (0, 100, and 200 kg ha-1of N) were tested. The experimental design used was completely randomized in a 5x3 factorial scheme with six replications. The evaluations were carried out 120 days after plant emergence, and the variables analyzed were stem diameter, plant height, and number of leaves. Data were subjected to analysis of variance and F-test. The means were compared by the Tukey test at p0.05. Regression analyzes were adjusted for phosphorus doses. The gabiroba responds significantly to the addition of phosphorus, with the dose of 400 kg ha-1 of P2O5 providing the highest height and the dose of 300 kg ha-1 of P2O5 providing the greatest stem diameter and the number of leaves. Up to 120 days old, gabiroba seedlings do not respond significantly to nitrogen fertilization.

scholarly journals pengaruh pemberian pupuk organik cair kandang kelinci dan kompos limbah baglog pada pertumbuhan bibit Kakao (theobroma cacao l.) Di polibeg

2019 ◽  
Vol 1 (2) ◽  
pp. 143-152
Author(s):  
Redho Anggara Nubriama ◽  
Erwin Pane ◽  
Sumihar Hutapea
Keyword(s):  
Plant Height ◽  
Theobroma Cacao ◽  
Organic Fertilizer ◽  
Stem Diameter ◽  
Top Soil ◽  
Wet Weight ◽  
Number Of Leaves ◽  
Theobroma Cacao L ◽  
Cocoa Seedlings ◽  
Different Doses

Cacao is one of the predominant plantation in Indonesia so that the production should be improved constantly. The purpose of this researce was to obtain data on the growth of cacao seedlings (Theobroma cacao L.) by applying rabbit cage liquid organic fertilizer and composting baglog waste with different doses. This research was carried out at the Medan Area faculty of agriculture experiment area located on the street PBSI No.1 Medan Estate. The research was conducted  from  July to  November  2018.  Using  Factorial  Randomized  Group Desing (RGD) with two replications. The first factor tested was rabbit cage liquid organic fertilizer namely U0= without POC, U1= consentration 5% (50 ml POC/liter), U2= consentration 10% (100 ml POC/liter), U3= consentration 15% (150 ml POC/liter). The second   factor is baglog waste compost which is L0= without compost baglog waste, L1= 20% baglog compost waste (600g) + 80% top soil (2.400g), L2= 40% baglog compost waste (1.200g) + 60% top soil (1.800g), L3= 60% baglog compost waste (1.800g) + 40% top soil (1.200g). The results showed that administration of baglog waste compost can increase growth ( plant height, number of leaves, stem diameter and canopy wet weight) of cocoa seedlings

Schinus molle seedlings production: Influence of slow release and conventional fertilizers

2021 ◽  
Vol 1 (2) ◽  
pp. 061-065
Author(s):  
Maximiliano Kawahata Pagliarini ◽  
Regina Maria Monteiro de Castilho
Keyword(s):  
Experimental Design ◽  
Plant Height ◽  
Slow Release ◽  
Diameter Ratio ◽  
Stem Diameter ◽  
State University ◽  
Paulo State ◽  
Schinus Molle ◽  
Plastic Bags ◽  
Number Of Leaves

The aim of this study was to evaluate the influence of different formulations of slow-release and conventional fertilizer in Schinus molle seedlings production. The experiment was conducted at São Paulo State University, School of Engineering, municipality of Ilha Solteira, Brazil, in a Pad & Fan greenhouse type (Average Temp. 26 °C and 55% RH). The seedlings were grown in the same cited environment in polyethylene trays filled with commercial substrate. When seedlings presented 3-4 leaves, 30 days after sowing they were transplanted to 4 L plastic bags, with the following treatments: T1 = Control, T2 = Osmocote® 3M (14-14-14), T3 = Basacote® 3M (15-09-12) and T4 = TecNutri® conventional fertilizer (05-13-13). Mixture of soil + commercial substrate (1:1) formed the substrate and fertilizer at a dosage of 3 g L-1 was used. The experimental design was completely randomized with 4 treatments and 06 replications and evaluations were performed 55 days after planting. The following characteristics were analysed: plant height, stem diameter (mm), plant height and stem diameter ratio and number of leaves. For 55 days seedlings the best treatment was the conventional fertilizer TecNutri®

scholarly journals TOLERÂNCIA DO FEIJÃO-CAUPI A DIFERENTES HERBICIDAS APLICADOS EM PÓS-EMERGÊNCIA

2018 ◽  
Vol 14 (3) ◽  
pp. 160-168
Author(s):  
Ruan Medeiros Cavalcante ◽  
Rommel Santos Siqueira Gomes ◽  
Gilmar Silva Nunes ◽  
Túlio Gondim Alves ◽  
Renato Francisco da Silva Souza ◽  
...  
Keyword(s):  
Experimental Design ◽  
Plant Height ◽  
Weed Control ◽  
Stem Diameter ◽  
High Tolerance ◽  
Severe Damage ◽  
Stage Of Development ◽  
Initial Stage ◽  
Number Of Leaves ◽  
Manual Weeding

One of the obstacles to the production of cowpea is the intensity of weed infestations that may interfere with its productivity. The objective of this work was to evaluate the tolerance of cowpea, cultivar BRS Guariba, to the herbicides Linuromand Quizalofope-P Etílico, in the initial stage of development of the crop. The experiment was conducted in sequestrationsystem, emergency irrigation underfield conditions in experimental design with randomized blocks, nine treatments and four replicates. The treatments evaluated were: 50% Quizalofope-P-Ethyl; 50% of Linurom; 100% Quizalofope-P-Ethyl; 100% of Linurom; 50% Quizalofope-P-Ethyl+ 50% Linurom; 50% Quizalofope-P-Ethyl+ 100% Linurom; 100% Quizalofope-P-Ethyl+ 50% Linurom; 100% of Quizalofope-P-Ethyl+ 100% of Linurom,and Manual weeding (control). Visual evaluations of weed control, phytotoxicity, plant height, number of leaves and stem diameter were performed. The cowpea plants, BRS Guariba cultivar, presented high tolerance tothe herbicides 50% and 50% in the post-emergence applications. The herbicide 100% Linurom and the formulation of the Quizalofope-P-Ethyl + Linurom cause severe damage to the development of cowpea. The herbicides blended with 100% of Quizalofope-P-Ethyland 100% of Linurom potentiatesthe effect of the herbicides on the cowpea crop, causing the death of the plants.

scholarly journals Growth of ornamental sunflowers in two growing seasons under semiarid conditions

2018 ◽  
pp. 381
Author(s):  
Sheila Daniella Pereira Da Silva ◽  
Márkilla Zunete Beckmann- Cavalcante ◽  
Gracielle Peixoto de Souza, Thais Silva de Oliveira, Raylla da Rocha Lima ◽  
Agnaldo Rodrigues de Melo Chaves
Keyword(s):  
Plant Height ◽  
Stem Diameter ◽  
Climate Conditions ◽  
Growing Seasons ◽  
Emergence Percentage ◽  
Number Of Leaves ◽  
Plant Emergence ◽  
Hot Weather ◽  
Four Blocks ◽  
Semiarid Conditions

Sunflower is considered a temperate zone crop but it can perform well under varying climate conditions. In this context, the aim of this study was to evaluate the growth of ornamental sunflower cultivars for cutting in two growing seasons in semiarid conditions. Sunflowers cultivars were sown in a randomized complete design in a split plot system, with four blocks. Six cultivars were evaluated (‘Bonito de outono sortido’, ‘Sol noturno’, ‘Sol vermelho’, ‘Jardim amarelo alto’, ‘Sunflower F1 sunbright supreme’ and ‘Sunflower F1 vincents choice’) in the main plots and two growing seasons in the subplots (GS1 – hot weather and GS2 – mild weather). Plant emergence percentage, plant height, stem diameter, number of leaves and internal inflorescence diameter were significant affected both by sunflowers cultivars and growing seasons.  Emergence speed index and external inflorescence diameter were significantly affected by the interaction of cultivars and growing seasons. The obtained results indicated ‘Sol vermelho’ for cultivation in growing seasons with mild temperatures (GS2) and 'Sunflower F1 vincents choice' recommended for both growing seasons with mild climatic (GS2) and in warmer conditions (GS1). Although all other cultivars studied have not been indicated immediately, they may be considered for cultivation, but more studies are necessary for better acclimatization.

scholarly journals Dormancy overcome and seedling quality of pecan in nursery

2016 ◽  
Vol 46 (11) ◽  
pp. 1980-1985 ◽  
Author(s):  
Tales Poletto ◽  
Marlove Fátima Brião Muniz ◽  
Igor Poletto ◽  
Valdir Marcos Stefenon ◽  
Caciara Gonzatto Maciel ◽  
...  
Keyword(s):  
Experimental Design ◽  
Plant Height ◽  
Seed Dormancy ◽  
Room Temperature ◽  
Seedling Quality ◽  
Stem Diameter ◽  
Number Of Leaves

ABSTRACT: This study evaluated the efficiency of methods to overcome seed dormancy in different storage periods in the production of pecan seedlings. Seeds were submitted to the following treatments: T1, T4 and T7 - control treatments (seeds with no treatment, stored at room temperature for 30, 60 and 90 days, respectively), T2, T5 and T8 - stratification (seeds were distributed in boxes with wet sand maintained at a temperature of 4°C for 30, 60 and 90 days, respectively), T3, T6 and T9 - scarification + stratification (seeds scarified with sandpaper n.80 and stratified by 30, 60 and 90 days, respectively), in completely random experimental design. Plant height, stem diameter, number of leaves, full emergence and emergence speed index (ESI) were evaluated after 14 weeks of sowing. The best development of pecan 'plants, their emergence, and ESI were observed in the stratification treatment for 90 day as well as in the scarification + stratification treatment for 90 day. Storing seeds in uncontrolled environment reduced their viability.

scholarly journals Molybdenum application forms associated to topdressing nitrogen fertilization in the production of maize crops

2017 ◽  
Vol 3 (2) ◽  
pp. 105
Author(s):  
Renê José dos Santos ◽  
José Henrique Bizzarri ◽  
André Prechlak Barbosa ◽  
Claudemir Zucareli
Keyword(s):  
Experimental Design ◽  
Grain Yield ◽  
Plant Height ◽  
Nitrogen Fertilization ◽  
Foliar Application ◽  
Stem Diameter ◽  
Maize Crop ◽  
Foliar Treatment ◽  
Application Forms

Nitrogen fertilization associated to the application of molybdenum (Mo) can increase grain yield in maize crops. Therefore, the objective of this study was to evaluate the effect of molybdenum application forms associated to topdressing nitrogen fertilization on production components and maize crops grain yield. The experiment was conducted with the cultivar Pioneer® 30F53H, under a randomized blocks experimental design, with subdivided parcels and four replications. Four forms of Mo applications were evaluated in each parcel: control (without Mo); seeds treatment (40 g ha-1 Mo); foliar treatment (40 g ha-1 Mo); seeds treatment (20 g ha-1 Mo) plus foliar treatment (20 g ha-1 Mo), using potassium molybdate as Mo source. The sub-parcels received four dosages of nitrogen (N), in topdressing (0, 80, 160 and 240 kg ha-1 N), in the form of urea. The experiment evaluated plant height, ear insertion height, stem diameter, number of grains per ear, 100 grains mass and grain yield in maize crops. The increase in N dosages in topdressing increases plant height, ear insertion height, stem diameter, number of grains per ear, 100 grains mass and maize crop grains yield. The application of molybdenum improves N absorption by maize crops. When applied via seeds treatment, Mo brings better results to foliar application in partial or total dosages.

scholarly journals The effect of nitrogen fertilization level on growth, yield and nodulation of Indigofera zollingeriana at early nursery stage

2019 ◽  
Author(s):  
Budiman Nohong ◽  
Syahdar Baba ◽  
Muhammad Yusuf
Keyword(s):  
Plant Height ◽  
Nitrogen Fertilizer ◽  
Nitrogen Fertilization ◽  
Dry Matter ◽  
Stem Diameter ◽  
Nitrogen Fertilizers ◽  
High Dose ◽  
Dry Matter Yield ◽  
Number Of Leaves ◽  
Indigofera Zollingeriana

The objective of this study was to determine the effect of nitrogen fertilizer level on growth, dry matter yield and nodulation of Indigofera zollingeriana plant at during the nursery. The experiments were arranged in a complete randomized design consisting of four treatments and four replications. The utilized four levels of the nitrogen fertilizer were 0 (P0), 100 (P1), 150 (P2) and 200 kg N/ha (P3) equivalent to 0, 0.15, 0.23 and 0.30 g N/polybag respectively. The variables in this study included the plant height, stem diameter, number of petioles per plant, length of petiole, number of leaves per plant, root length for each plant and dry matter yield. The results showed that the fertilizer doses increased the plant height, stem diameter, number of leaves per plant, and dry matter yield of leaf, leaf petiole, stem, root and nodule. It could be concluded that nitrogen fertilization was effective in stimulating growth, production and nodulation at early nursery stage, yet higher nitrogen doses (200 Kg N/ha) are ineffective and have inhibitory effects of growth and production. Therefore, high-dose nitrogen fertilizers in legume plants should be avoided because Indigofera zollingeriana is able to fix nitrogen from the atmosphere as in other legumes.

scholarly journals Nitrogen fertilization in the production of seedlings of Talisia esculenta (A. St. Hil) Radlk

2017 ◽  
Vol 21 (7) ◽  
pp. 443-447 ◽  
Author(s):  
Mauro da S. Tosta ◽  
João P. N. de Almeida ◽  
Glêidson B. de Góes ◽  
Priscilla de A. Freire ◽  
Vander Mendonça
Keyword(s):  
Experimental Design ◽  
Nitrogen Fertilization ◽  
Quality Index ◽  
Dry Matter ◽  
Shoot Length ◽  
Stem Diameter ◽  
N Source ◽  
Number Of Leaves ◽  
Non Destructive ◽  
Dickson Quality Index

ABSTRACT ‘Pitombeira’ does not have organized cultivation, thus requiring information related to the production of seedlings, particularly in relation to chemical fertilizer. In this context, an experiment was conducted in order to define the best dose of nitrogen (N), using urea as N source, to be applied in ‘pitombeira’ seedlings. The experimental design was complete randomized blocks with four replicates and ten plants per plot, testing five N doses (0, 400, 800, 1.600 and 3.200 mg dm-3). Data were submitted to analysis of variance and regression. The non-destructive measurements (number of leaves, stem diameter, shoot length and the ratio between shoot length and stem diameter) were evaluated at 30, 60, 90 and 120 days after transplanting (DAT). In addition, shoot, root and total dry matter and Dickson quality index were determined at 120 DAT. Nitrogen fertilizations, from the dose of 500 mg N dm-3 as top-dressing, were those that led to the most vigorous ‘pitombeira’ plants, while plants developed with dose above 1.600 mg of N dm-3 showed a reduction in their vigor.

scholarly journals Production of lettuce changes (lactuca sativa) submitted to different doses of Silicon

2020 ◽  
Vol 13 (1) ◽  
pp. 1
Author(s):  
T. O. D. Gonzaga ◽  
C. Araujo ◽  
A. L. Andrade ◽  
J. M. Dos Santos ◽  
G. B. Silva ◽  
...  
Keyword(s):  
Experimental Design ◽  
Analysis Of Variance ◽  
Lactuca Sativa ◽  
Dry Mass ◽  
Viable Alternative ◽  
Seedling Production ◽  
Tukey Test ◽  
Number Of Leaves ◽  
Shoot Mass ◽  
Different Doses

The objective of this work was to evaluate the effect of different doses of silicon on the production of lettuce seedlings. The treatments were arranged in a 4x2 factorial scheme, totaling 8 treatments. The first factor corresponded to 4 Si doses (Ca silicate) added to the substrate for seedling production (0; 13.3; 32.3 and 53.2 g.kg-1 of Si on the substrate). The second factor corresponded to two varieties of lettuce, being Mônica SF31 (Crespa) and Rafaela (Americana). The experimental design was the completely randomized, with 4 replicates. The number of leaves (NF), fresh aerial mass (MFPA), dry shoot mass (MSPA), fresh radicular mass (MFRA) and root dry mass (MSRA) were evaluated. Data were submitted to analysis of variance by the F test, and the means of the treatments compared by the Tukey test at 5% probability. The seedlings of the Mônica SF31 and Rafaela lettuce varieties do not present differences regarding the Si requirement for the production of MFPA, MSPA, MFRA and MSRA. The application of Si to the substrate can be a viable alternative for the production of lettuce seedlings with higher NF, MFPA, MSPA, MFRA and MSRA. Doses of 32.0 to 43.7 g.kg-1 of Si in the substrate are suitable for higher production of MFPA, MSPA, MFRA and MSRA of lettuce Mônica SF31. Doses of 31.5 to 39.8 g.kg-1 of Si in the substrate are suitable for higher production of MFPA, MSPA, MFRA and MSRA of Rafaela lettuce seedlings.

scholarly journals Initial Development of Clonal Seedlings of Coffea canephora Submitted to Different Irrigation Depth

2019 ◽  
pp. 1-7
Author(s):  
André Lucas Reboli Pagoto ◽  
Vinicius De Souza Oliveira
Keyword(s):  
Experimental Design ◽  
Root System ◽  
Plant Height ◽  
Aerial Part ◽  
Coffea Canephora ◽  
Dry Mass ◽  
Stem Diameter ◽  
Initial Development ◽  
Irrigation Depth ◽  
Different Depths

The objective of this study was to evaluate the effect of different irrigation depth on initial development of Coffea canephora seedlings. The study was carried out at the farm Perobas, in the municipality of Rio Bananal, Espírito Santo, Brazil. The experimental design was completely randomized, with five treatments, comprising different depths of irrigation, being: 5, 7.5, 10, 12.5 and 15 mm dia-1. At 55 days after planting the seedlings were evaluated for characteristics:stem diameter, plant height, dry mass of aerial part and dry mass of the root system. The stem diameter and dry mass of the root system presented an inverse behavior to the increase of the irrigation depth. The plant height and dry mass of aerial part presented an increasing effect in relation to the variation of the irrigation depth. The 5 mm dia-1 irrigation depth provides the best result for development in the initial stages of the root system of the seedlings, while the irrigation depth of 15 mm dia-1 favored a greater accumulation of dry mass of aerial part of the seedlings.

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