scholarly journals Outplanting performace of eucalyptus clonal cuttings produced in different containers and substrates

2008 ◽  
Vol 32 (6) ◽  
pp. 1019-1028 ◽  
Author(s):  
Teresa Aparecida Soares de Freitas ◽  
Deborah Guerra Barroso ◽  
José Geraldo de Araújo Carneiro ◽  
Ricardo Miguel Penchel ◽  
Marcos Pellegrini Coutinho

The objective of this work was to evaluate the outplanting growth of Eucalyptus grandis e E. saligna clones, produced by cuttings in tubes (50cm³) and in pressed blocks (40x60x07cm) - 175 cm³/ seedlings, with different substrates (BT - sugarcane bagasse+sugarcane filter cake; AR - carbonized rice hull + eucalyptus bark; TF - peat). The experiment was arranged in a randomized block design, in a 2x7 factorial (2 clones and 7 treatments), with four replicates with 25 plants. Survival was evaluated two months later. Plant growth was monitored through height and ground level diameter at 20, 40, 60, 120 and 180 days after outplanting. To evaluate the effect of the containers on stem and root biomass in both clones, 180 days after outplanting, the cuttings grown in BT substrate with fertilizer were selected. One plant per plot of each clone, grown in tubes and in pressed blocks was selected. The E. grandis and E. saligna cuttings grown in pressed blocks with sugarcane bagasse+sugarcane filter cake presented greater height and diameter after out planting. Both clones presented larger root, bark, log and branch biomass production in plants produced in the block system. Cuttings of E. saligna grown in pressed blocks showed 80% most wood biomass 180 days after outplanting, compared to that grown in tubes. In E. grandis, the differences in diameter and height, in function of the cutting production system, decreased along time, while in E. saligna these differences increased along the evaluation period.

2019 ◽  
Vol 1 (2) ◽  
pp. 133-142
Author(s):  
Muhammad Jusfar Simajuntak ◽  
Syahbudin Hasibuan ◽  
Maimunah Maimunah

Cowpeas is becoming rare, hence it has to be planted again to some reasons. This research aims to know the growth and production of cowpeas with Bokashi use of sugarcane filter cake and liquid organic fertilizer pineapple skin that have been implemented at the Faculty of Agriculture Experimental Station Road PBSI Area Terrain 1 Terrain Estate, District Percut Sei Tuan from March to July 2019. Methods the research in this research is a randomized block design factorial, with 2 (two) treatment factors, namely: 1) factors bokashi cane filter cake (T) and Organic Liquid Fertilizer Factors pineapple skin (S), each treatment was repeated 2 times so that there are 32 experimental plots. Each experimental plot consisted of eight plants with four plant samples. The results of this research indicate that the use of Bokashi blotong cane very significant effect on the number of pods persample but did not significantly  affect  stem  diameter,  length  of  pods  persampel,  heavy  pods persampel and production perplot, fertilizer liquid organic pineapple skin very significant effect on the number of pods persampel, but did not significantly affect stem diameter, persampel pod length, pod weight and production persampel perplot, a combination of the use of sugarcane filter cake bokashi organic fertilizer liquid and pineapple skin no real effect on the growth and yield of cowpeas.


Author(s):  
Henrique Guimarães de Favare ◽  
Sandra da Costa Preisigke ◽  
Leonarda Grillo Neves ◽  
Kelly Lana Araújo ◽  
Milson Evaldo Serafim ◽  
...  

The production of good quality passion fruit seedlings depends on substrates with adequate physical and chemical characteristics. Therefore, this experiment was conducted to evaluate the effect of doses of ash from burning of sugarcane bagasse on improvement of traits of the substrate "gully soil". The experiment was set up in a greenhouse and arranged in randomized block design, in a 2x7x2 factorial scheme. The following factors and their respective levels were studied: (i) soil structure,- aggregating between 4 and 10 mm and <2 mm; (ii) ash doses - 0; 1.5; 3; 6; 12; 24; and 48 t ha-1; (iii) families of passion fruit - F29 and F48. The use of ash combined to the soil with structure <2mm significantly increased the production of shoot fresh mass and shoot dry mass for both families studied. The density of the substrate obtained by the mixture of ash and gully soil (soil) decreased as ash doses increased, regardless of the size of the aggregates and the family studied.


2005 ◽  
Vol 81 (4) ◽  
pp. 548-558 ◽  
Author(s):  
Sylvia Greifenhagen ◽  
Douglas G Pitt ◽  
Monique C Wester ◽  
F. Wayne Bell

This study, a component of the Fallingsnow Ecosystem Project, was designed to investigate the effects of conifer release alternatives on the quality of regenerating trembling aspen (Populus tremuloides Michx.). A randomized block design was used to compare untreated aspen with aspen growing in areas treated with two broadcast cutting treatments (brushsaw and Silvana Selective) and two broadcast herbicide treatments (glyphosate and triclopyr). The glyphosate treatment virtually eliminated aspen, whereas triclopyr tended to top-kill aspen, resulting in lateral dominance. Both fall cutting treatments generated prolific aspen root suckering and stump sprouting. Stain was common in aspen across the study site in damaged, untreated, and post-treatment stems, indicating that stain develops rapidly in young aspen suckers. Stems damaged by the treatments had higher incidences of decay (33% of cut stems and 10% of herbicide-damaged stems) than untreated aspen (8% of stems); however, decay volume was low for all treatments (1–4% of total stem volume affected). The location of decay (e.g., near ground level in cut stems) and presence of stem crooks in herbicide-treated aspen are important effects of the treatments on aspen quality. Armillaria root disease, which was found throughout the study site, was more prevalent in roots of treatment-damaged and untreated aspen than in suckers that originated post-treatment. These differences can be attributed to proximity to parent stumps, prevalence of root wounds, and older age of damaged and untreated stems. Key words: aspen quality, decay, conifer release, vegetation management, fibre production


Author(s):  
Mr Rahmad ◽  
Laode Asrul ◽  
Tutik Kuswinanti ◽  
Yunus Musa

Sugarcane requires land conditions that contain high organic matter to support growth and production. Giving compost from the results of the utilization of the byproducts of sugarcane processing in the form of bagasse and filter mud is expected to increase the sugarcane productivity. The purpose of this study was to determine the effect of compost from the sugarcane bagasse, filter mud and cow manure using the decomposer and Trico Plus mushroom consortium on the growth and production of sugarcane. The experiment was carried out in the form of a randomized block design consisting of eight treatments and three replications. Each treatment was applied as much as 15 tons per hectare, NPK basic fertilizer for all 350 kg treatments per hectare. The results showed that the treatment of compost provides a higher number of sugarcane saplings compared to without the provision of compost. The compost C treatment gave the highest number of sugarcane saplings and the highest number of segments of 7.45 sugarcane saplings and 18.33 segments. Treatment G gave the highest plant height of 283.30 cm, treatment B gave the highest segment length of 15.17 cm, stem diameter of 2.62 cm, stem height of 163.00 cm, sugarcane stem weight of 158.36 kg per plot and 97.655 tons per hectare and POL value 31.32% while treatment E gave the highest Briks value of 23.43%. G treatment gave the best plant height value of 283.30 cm. Giving compost from the results of mixing bagasse, filter mud and manure using the mushroom and Trico Plus consortiums gave better results on growth, and production of sugar cane compared to without the provision of compost.


2019 ◽  
Author(s):  
Solly Aryza

The objective of this research was to determine the effect of soil type, biochar type and dose of soybean seed germination in a glass house as biochar quality test. The study used a randomized block design with three factors and two replications. First factor were biochar type application: B1 (Rice hull biochar/RHB ); B2(Maize Strover Biochar/MSB); B3 (Rice straw biochar/RSB); B4 (Bagasse Biochar/BB); B5 (Tapioca residue Biochar/TRB); B6 (Oil palm empty fruit bunch/OPB). Second Factor were biochar rate application : 10 t/ha (M1); 20 t/ha (M2). The third Factor was soil type/origin application: Soil from Rampah District (T1); Soil from Medan (T2); District Soil from Galang District(T3). The results of this research showed biochar type, doses of application, soil type, and its interaction significantly affected soybean germination and growth of soybean germination. Rice hull biochar and Bagasse Biochar showed the highest soybean germination percentage and rice hull biochar, and tapioca residue biochar showed the highest growth of soybean germination. Soil from the growth of soybean germination Medan district does biochar at 20 t/ha and interaction 2 factor T2B1 dan B2M1 showed the highest soybean germination percentage


2016 ◽  
Vol 36 (86) ◽  
pp. 145
Author(s):  
Edinéia Messias Martins Bartieres ◽  
Natália Hilgert de Souza Carnevali ◽  
Elizeu De Souza Lima ◽  
Thiago Oliveira Carnevali ◽  
Viviane Mallmann

Com a premissa de que a utilização de hidrogel associado à calagem e adubação em plantios de eucalipto aumenta a retenção de água e o teor de nutrientes no solo, objetivou-se avaliar a sobrevivência e o desenvolvimento inicial de clones híbridos de Eucalyptus grandis x Eucalyptus camaldulensis, em função da utilização de hidrogel, calagem e adubação. Em um Argissolo Vermelho, foram dispostos os tratamentos: 1) controle, 2) hidrogel, 3) adubação convencional, 4) adubação + calagem, 5) adubação + hidrogel e 6) adubação + calagem + hidrogel. Foi utilizado o delineamento em blocos casualizados, com seis repetições e seis plantas por parcela. Avaliou-se a sobrevivência, a altura, o diâmetro do caule, o teor de macronutrientes na parte aérea e atributos químicos do solo. O tratamento adubação + hidrogel proporcionou maior altura e diâmetro aos 240 dias após o transplante. Contudo, a sobrevivência foi maior no tratamento com adubação convencional. Os resultados indicam a viabilidade do uso de hidrogel. Porém, mais estudos devem ser realizados para comprovação de seus efeitos e recomendação de dosagens adequadas.Hydrogel, liming and fertilizing in early development, survival and nutritional composition of eucalyptus hybrid plantsWith the premise that use of hydrogel associated with liming and fertilization in eucalyptus plantations increases water retention and nutrient content in the soil, this work aimed to evaluate the survival and early development of the hybrid Eucalyptus grandis x Eucalyptus camaldulensis when using hydrogel, liming and fertilization. In Ultisol, the treatments were: 1) control, 2) hydrogel, 3) conventional fertilization, 4) fertilizer + lime, 5) fertilizer + hydrogel and 6) fertilizer + lime + hydrogel. The treatments were arranged in a randomized block design, with six replications and six plants per plot. We evaluated height, diameter, survival, macronutrient content in shoot and soil chemical properties. The hydrogel + fertilization treatment provided bigger height and diameter at 240 days after transplant, however, the survival was higher in fertilization treatment. The results indicate the viability of the hydrogel use. However but more studies are needed to prove its effects and recommendation of appropriate dosages.Index terms: Initial growth; Nutritional evaluation; Hidroretentor gel


2021 ◽  
Author(s):  
Verediana Rosa Almeida ◽  
Gisele Carneiro ◽  
Itamar Rosa Teixeira ◽  
Jonas Vieira ◽  
Wilson Mozena ◽  
...  

Abstract This study aimed to evaluate the nutrition and yield of common bean according to the application of different doses of organomineral formulations (OMF), using filter cake as a basic organic compound in the presence and absence of nitrogen. The experiments was implemented and conducted in June "autumn/winter season" and November "rainy season" of the 2018 e 2018/2019 harvest, respectively. A randomized block design was used in a 6 x 2 factorial scheme, with four replications. The treatments were composed of six organomineral formulation doses: (0, 30, 60, 90, 120, and 150 kg ha− 1), with and without the addition of a nitrogen dose of 40 kg ha− 1, using urea as the mineral source. It was concluded that the organomineral fertilizer based on filter cake showed greater absorption of macronutrients N and K, an increase in the 100-grain weight, number of grains per pod, number of pods per plant, and grain yield in comparison with the absence of fertilization or mineral fertilizers, highlighting the doses of 90 and 150 kg ha− 1. The use of OMFs is a viable alternative with great potential for soil fertilization in agricultural production, besides the environmental sustainability generated by their inclusion in the production cycle of common bean.


FLORESTA ◽  
2018 ◽  
Vol 48 (4) ◽  
pp. 543 ◽  
Author(s):  
Mateus Chagas ◽  
Leandro Siqueira ◽  
Shinitiro Oda ◽  
Raimundo Medeiros ◽  
Evandro Vagner Tambarussi

Genetic variability in progenies of Eucalyptus grandis and Eucalyptus urophylla for tolerance to hydric deficit. Information on the adaptation and genetic potential of Eucalyptus under water deficit conditions is necessary owing to the increasing cultivation of the genus in regions considered as "forest frontiers". Therefore, the present study aimed to estimate genetic variability, genotypic and phenotypic correlations, and estimated genetic gains in progenies of E. grandis and E. urophylla. Two progeny tests (TP1 and TP2) were performed in the municipality of Vila Nova dos Martirios (state of Maranhão, Brazil), in 30-month-old plants. The experiment was carried out using a randomized block design, with five replicates, nine plants/square plot, and 144 treatments in TP1 and 264 in TP2. Statistical analysis was performed and genetic parameters were estimated. Individual and within-progeny heritabilities were corrected using the kinship coefficient for eachspecies. Genetic gains were low, ranging from 0.96 to 6.39% for E. grandis and 1.62 to 5.48% for E. urophylla. The diameter at breast height (DBH) showed a higher coefficient of genetic variation compared with the other measured characteristics, suggesting a higher potential for selection. High, positive, and significant correlations were observed between DBH and height (H), indicating the possibility of obtaining gains based on a single characteristic. Heritability was considered low, thus directly influencing the selection gains, which were lower than those commonly reported in other studies. These findings provide important information for breeding programs in areas of forest expansion.


CERNE ◽  
2015 ◽  
Vol 21 (2) ◽  
pp. 209-217 ◽  
Author(s):  
Márcio Viera ◽  
Mauro Valdir Schumacher ◽  
Edenilson Vieira Liberalesso ◽  
Roque Rodríguez-Soalleiro

The aim of this study was to evaluate fine root biomass density (FRBD) in mixed and monospecific stands of Eucalyptus grandis x E. urophylla and Acacia mearnsii(black wattle) in Bagé-RS (Southern Brazil). An experimental trial was installed with three treatments: 100% Eucalyptus (100E); 100% Acacia mearnsii (100A); 50% Eucalyptus + 50% Acacia mearnsii (50E:50A). The trial was carried using a randomized block design with three replicates. The fine root (&le; 2.0mm) biomass density was determined 8 and 18 months after planting the trees. Soil samples were collected, with a cylindrical extractor auger (d = 7.0 cm), from four depths (0 - 5, 5 - 10, 10 - 20 and 20 - 30 cm) at each sampling point. After 8 months, the FRBD distribution was the same in both species and in all soil layers, reaching the maximum projection at 125 cm from the tree trunk. After 18 months, the root biomass density was higher in the monospecific black wattle stand than in the monospecific eucalyptus stand and the mixed stand. The fine root biomass density was highest in the 5 - 10 cm layer close to the trunk, for the planting row spacing, the planting line and the diagonals between two planting lines. Knowledge about fine root growth and distribution in soil at initial stages of stand development may help in decision-making for intensive forestry, thus ensuring more efficient use of soil resources.


FLORESTA ◽  
2012 ◽  
Vol 42 (2) ◽  
pp. 285
Author(s):  
Emanuel Araújo Silva ◽  
Gabriel Paes Marangon ◽  
Luana Dessbesell ◽  
Weslley Wilker Morais ◽  
Diogo Belmonte Lippert ◽  
...  

 O objetivo do trabalho foi comparar níveis de reflectância das folhas de Eucalyptus grandis Hill ex Maiden através de medidas espectrais a partir da localização das mesmas em relação à árvore e aos pontos cardeais. O experimento foi conduzido na área experimental pertencente à FEPAGRO, localizada no município de Santa Maria-RS. O trabalho compreendeu a instalação de delineamento blocos ao acaso. Com a utilização de um espectrorradiômetro FieldSpec®3, foram obtidas as medidas de radiância refletida da face superior das folhas e posteriormente trabalhados no software R. Na Banda 1 (400 a 700 nm), notou-se um pico que está relacionado ao total de clorofila na folha dentro da faixa do visível. Observou-se que folhas na posição leste foram as que apresentaram maior reflectância, e as folhas que estavam ao sul e ao oeste apresentaram as menores. Para a Banda 2 (700 a 1000 nm), observou-se diferença estatística significativa apenas entre os valores médios das reflectâncias no par de posições leste-oeste, contrastando com a Banda 1, que obteve diferença significativa entre as reflectâncias médias de todos os pares. A resposta espectral das folhas revelou-se estatisticamente diferente, confirmando, assim, que há diferença espectral relacionada à localização das árvores e posições de coletas das folhas.Palavras-chave: Espectrorradiometria; sensoriamento remoto; curva de reflectância. AbstractSpectral reflectance characterization in Eucalyptus grandis. The objective was to compare levels of reflectance of leaves of Eucalyptus grandis Hill ex Maiden using spectral measurements from their location in relation to the tree and the cardinal points. The experiment was carried out in the experimental area belonging to FEPAGRO, located in Santa Maria-RS. The work included the installation of a randomized block design. With the use of a spectroradiometer FieldSpec ® 3, it was measured the radiance reflected from the upper surface of leaves for further work with the software R. In the first band (400 to 700 nm), it was realized that a peak is related to total chlorophyll within the visible range. It was observed that the leaves heading east presented the highest reflectance and the leaves at south and west had the lowest one. For the second band (700 to 1000 nm), we observed a statistically significant difference only between the average values of reflectance in the pair of east-west positions, contrasting with the band that got a significant difference between the average reflectance of all pairs. The spectral response of leaves proved to be statistically different; it confirms that there are differences related to the spectral location of trees and locations of collected leaves.Keywords: Spectroradiometry; remote sensing; reflectance curve. 


Sign in / Sign up

Export Citation Format

Share Document