scholarly journals PERFORMANCE OF SPECIES Mabea fistulifera AND Eucalyptus urograndis WITH USE OF CELLULOSE RESIDUE IN DEGRADED AREAS

FLORESTA ◽  
2019 ◽  
Vol 49 (2) ◽  
pp. 363
Author(s):  
Romulo Guimarães Giácomo ◽  
Marlene Cristina Alves ◽  
Rodrigo Camara ◽  
Marcos Gervasio Gervasio Pereira ◽  
Sebastião Nilce Souto Filho ◽  
...  
Keyword(s):  
Native Species ◽  
Seedling Survival ◽  
Block Design ◽  
Mineral Fertilizer ◽  
Ground Level ◽  
Mineral Fertilization ◽  
Randomized Block Design ◽  
Hybrid Eucalyptus ◽  
Cellulose Residue ◽  
Eucalyptus Urograndis

The planting of forest species contributes to the recovery of degraded areas, and the use of industrial waste can favor this process. However, there is still little information on this aspect in Cerrado. The objective of this work was to evaluate the performance of seedlings of the native species Mabea fistulifera Mart. and of the exotic hybrid Eucalyptus urograndis, under fertilization with residue of the industrial production of cellulose, in monospecific plantations in degraded area. Fertilization treatments, applied in the planting line, were three doses of the residue (10, 15 and 20 Mg ha -1); conventional mineral fertilizer (NPK); absence of fertilization (control). The experimental design was a randomized block design, with a portion of subdivided parts: species in the portions (15 m x 60 m, n = 4 / species) and treatments in the subportions (15 m x 12 m, n = 1 / treatment / portion) total of 18 plants in each subplot. Survival rate and growth attributes (height, crown diameter, stem diameter at ground level) were evaluated for two consecutive years. The largest increases in seedling survival and growth of both species were provided by mineral fertilization, followed by the 10 Mg ha -1 dose of the residue, which should be the recommended.

scholarly journals Eucalyptus growth in silvopastoral system under different crown dia meters

2013 ◽  
Vol 31 (4) ◽  
pp. 851-857 ◽  
Author(s):  
M.S. Machado ◽  
L.R. Ferreira ◽  
S.N. Oliveira Neto ◽  
H.M.F. Moraes ◽  
V.A. Gonçalves ◽  
...  
Keyword(s):  
Leaf Area ◽  
Block Design ◽  
Ground Level ◽  
Early Growth ◽  
Silvopastoral System ◽  
Lower Growth ◽  
Brachiaria Decumbens ◽  
Randomized Block Design ◽  
Hybrid Eucalyptus ◽  
Favorable Conditions

The aim of this study was to evaluate the effect of different crown diameters on the early growth of eucalyptus intercropped with Brachiaria decumbens in a silvopastoral system. The experiment was conducted in a B. decumbens established pasture, where hybrid eucalyptus urograndis (clone GG100) was planted, spaced 8 x 3 m. A randomized block design was used, with six replicates. Treatments consisted of five crown diameters (0.0, 1.0, 1.5, 2.0, and 3.0 m) surrounding the eucalyptus plants. Five weeding hoes were performed throughout the experiment, according to the different crown diameters, aiming to maintain the eucalyptus plants free from B. decumbens interference. At 90, 180, 270, and 360 DAP, the height and the diameter of the eucalyptus plants were evaluated, and at 360 DAP, surface biomass and leaf area were evaluated. At 90 DAP, it was verified that the non-weeded plants had lower growth, compared to those submitted to crowns. Crown diameters of 2.51 and 2.64 m allowed greater growth in height and diameter at ground level of eucalyptus plants, respectively, in all periods evaluated. Biomass production and leaf area per plant at 360 DAP were also influenced by the different crown diameters. It was concluded that crown diameter around 2 meters provided favorable conditions for early growth of eucalyptus and less involvement in the area occupied by forage.

scholarly journals NITROGEN IN THE INITIAL GROWTH AND PHOTOSYNTHESIS PHOTOCHEMICAL IN Alibertia sessilis (Vell.) K. Schum

FLORESTA ◽  
2020 ◽  
Vol 50 (2) ◽  
pp. 1379
Author(s):  
Cleberton Correia Santos ◽  
Rafael Da Cruz Chiquito Ortega ◽  
Juliana Milene Silvério ◽  
Henrique Chacha Poyer ◽  
Silvana De Paula Quintão Scalon ◽  
...  
Keyword(s):  
Native Species ◽  
Seedling Survival ◽  
Block Design ◽  
Diameter Ratio ◽  
Maximum Height ◽  
Initial Growth ◽  
Seedling Production ◽  
Randomized Block Design ◽  
Data Variability ◽  
Number Of Leaves

The use of N fertilizers can contribute to seedling production in native species, such as Alibertia sessilis (Vell.) K. Schum, a fruit plant of the Cerrado ecoregion. Considering that there are few studies on mineral nutrition for this species, the aim of this study was to evaluate the effect of N on the growth and photosynthesis photochemical of A. sessilis. The experiment was carried out in plastic pots in a greenhouse with five N (urea) concentrations: 0, 25, 50, 75, and 100 mg kg-1. The experimental design used was a randomized block design with four repetitions. At day 180 after transplantation, morphometric and photochemical characteristics, including biomass and seedling quality, were evaluated. Seedling survival, the stem diameter of the harvest, and the height/diameter ratio were not influenced by N. The maximum height was 14.38 cm with 54.2 kg-1 N. The greatest number of leaves and value of the chlorophyll index were found in seedlings produced with maximum doses of N. The photochemical characteristics of photosynthesis, except initial fluorescence, were positively influenced with N concentrations between 60-85 mg kg-1 N. The largest fresh leaf and stem biomass was 2.391 and 0.257 g plant-1 with 54.0 and 33.0 mg kg-1 of N, respectively. The multivariate analysis of the major components explained 79.81% of the remaining data variability. The seedlings of A. sessilis responded positively during the initial growth phase, reflected in their biomass, with N concentrations close to 50.0 mg kg-1.

scholarly journals Agronomic performance of strawberry plants under growing environments and organomineral fertilization

2018 ◽  
Vol 48 (4) ◽  
pp. 331-339
Author(s):  
Keivia Lino Chagas ◽  
Thales Vinícius de Araújo Viana ◽  
Denise Vieira Vasconcelos ◽  
Geocleber Gomes de Sousa ◽  
João Valdenor Pereira Filho
Keyword(s):  
Block Design ◽  
Mineral Fertilizer ◽  
Physicochemical Characteristics ◽  
Organic Fertilization ◽  
Mineral Fertilization ◽  
Randomized Block Design ◽  
Significant Difference ◽  
Brazilian Northeast ◽  
Fruit Mass

ABSTRACT Organic fertilization, associated to cultivation under a climatized environment, can make profitable the growth of strawberry plants in the Brazilian Northeast region, increasing the market value for their fruits. This study aimed to evaluate the effect of organic and/or mineral fertilization on strawberry plants grown under different environments. The experiment was carried out in a complete split-plot randomized block design, with four replications. The plots were composed by three cultivation environments and the subplots by six types of fertilization, associating mineral and organic fertilization. The organomineral fertilization with equal proportions of bovine manure and NPK mineral fertilizer provides a higher number of fruits per plant, average fruit mass per plant, yield and fruit length. There was no significant difference among the evaluated environments; however, in general, the climatized environment provides greater results, regarding the development and quality of the plants, improving the physicochemical characteristics of the fruits.

Nutrients demand of cactus forage

2019 ◽  
Author(s):  
João Macedo Moreira ◽  
Aldrin Martin Pérez-Marin ◽  
Jucilene Silva Araújo ◽  
George Rodrigues Lambais ◽  
Aldo Sales
Keyword(s):  
Block Design ◽  
Nutrient Utilization ◽  
Nutrient Recovery ◽  
Fertilizer Treatment ◽  
Treatment Control ◽  
Mineral Fertilization ◽  
Randomized Block Design ◽  
Nutrient Use ◽  
Different Types ◽  
Semi Arid Region

The study aimed to evaluate the efficiency of nutrient use in three cactus forage (CF) cultivars (Opuntia stricta and Nopalea cochenillifera), 365 days after planting under different types of fertilizer in two research sites (Condado and Riachão) of the semi-arid region of Paraiba state, Brazil. The experimental design was a randomized block design with treatments in a factorial scheme (3×4), three cultivars of CF (Orelha de elefante Mexicana; Miúda; Bahiana), and four fertilizer treatment (Control; Manure; Manure with Nitrogen; Mineral fertilization) with four replications. The CF cultivars did not differ significantly in nutrient use. That means of physiological efficiency by CF cultivars were 1.62, and 2.36 kg of biomass per kg of nutrient applied in Condado and Riachão, respectively. The efficiency of nutrient recovery was 16% for the Condado, according the following order: K> P> Ca> N> C = Mg and 12% for Riachão: K> P> N> C = Ca = Mg. In the two research sites, the treatment with mineral fertilization significantly increased the efficiency use of N, P and K in comparison to the other treatments. The average for efficiency of nutrient utilization was 25% and 19% for Condado and Riachão, respectively, in the following order for Condado: K> P> N> Ca = Mg> C, and Riachão: K> P> N> C> Mg = Ca. In a CF production system aiming to obtain a yearly harvest cycle, it is necessary to replenish of K and P to maintain the nutritional balance between the soil and CF plant.

scholarly journals Production of cabbage grown in pots containing legumes' root and shoot

Revista CERES ◽  
2012 ◽  
Vol 59 (5) ◽  
pp. 689-694 ◽  
Author(s):  
Thiago de Oliveira Vargas ◽  
Ellen Rúbia Diniz ◽  
Ricardo Henrique Silva Santos ◽  
Alysson Roberto de Almeida ◽  
Segundo Urquiaga ◽  
...  
Keyword(s):  
Block Design ◽  
Mineral Fertilizer ◽  
Dry Weight ◽  
N Fertilization ◽  
Recommended Dose ◽  
Legume Species ◽  
Mineral Fertilization ◽  
Mineral N ◽  
Plant Parts ◽  
Whole Plant

Roots effect is not generally considered in studies assessing the performance of crops in response to green manuring. However, such effect can contribute to a better understanding of crop rotation. The aim of this study was to assess the effect of root and shoot of two legumes on the production of cabbage. The experiment was conducted in pots of 10 liters containing substrate of 2:1 soil/sand. The experiment was arranged in a factorial scheme (2x3 + 2) in a randomized block design with five replicates using two legume species (Crotalaria juncea L. and Canavalia ensiformis L), three plant parts (root, shoot, or whole plant), and two additional treatments (mineral fertilization with 100% and 50% of the recommended dose of N for growing cabbage). Pots with legume treatments received mineral fertilizer with 50% of the recommended dose of N for growing cabbage. The experimental plot consisted of a pot containing one plant of cabbage. Legumes were grown in pots and harvested at 78 days. The root biomass was determined in extra pots. Production was assessed using head fresh and dry weight. The application of the whole plant of both legume species reduced cabbage production. However, root or shoot of both legume species was equivalent to 50% of mineral N fertilization required for the cultivation of cabbage.

scholarly journals Effect of sucker weight and seedling site on the growth of sago seedlings (Metroxylon sago Rottb.) in Papua

2021 ◽  
Vol 924 (1) ◽  
pp. 012085
Author(s):  
A Soplanit ◽  
M K Rumbarar ◽  
P Beding
Keyword(s):  
Factorial Design ◽  
Seed Quality ◽  
Seedling Survival ◽  
Block Design ◽  
Factor B ◽  
G Factor ◽  
Primary Roots ◽  
Randomized Block Design

Abstract This study aims to obtain sucker weight and appropriate seedling site as a source of sago seeds by using seedling techniques in polybags to improve seed quality on sago cultivation. The experiment used a factorial design arranged in a randomized block design with three replications. Factor A, namely sucker weight, consisted of <999 g, 1000-1499 g, 1500-1999 g and > 2000 g. Factor B is the seedling site, consisting of laying seeds in the field, greenhouse and paranet of 60%. The results of the study showed that there was no interaction between the sucker weight combined with the seedling site, but the sucker weight had a significant effect on the number of rachis and the number of primary roots per plant and the percentage of life seedlings. Higher rachis growth was 3.8 obtained from medium-sized sucker weights (1000-1499 g and 1500-1999 g) and the highest number of primary roots was 41.3. It is obtained at sucker weights of 1000-1499 g. Meanwhile, the higher percentage of seedling survival was obtained at medium to large sucker weights of 66.3-71.0%. Thus, multiplication of sago seeds using medium-sized sucker on polybag media is highly suggested.

scholarly journals Pig slurry as a nutrient source in wheat/corn succession

Revista CERES ◽  
2016 ◽  
Vol 63 (3) ◽  
pp. 412-418 ◽  
Author(s):  
Claudir José Basso ◽  
Marlo Adriano Bison Pinto ◽  
Antônio Luis Santi ◽  
Rodrigo Ferreira da Silva ◽  
Diecson Ruy Orsolin da Silva
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Pig Slurry ◽  
Nutrient Source ◽  
Mineral Fertilization ◽  
Adequate Supply ◽  
Randomized Block Design ◽  
Efficient Alternative ◽  
Crop Succession ◽  
Npk Fertilization

ABSTRACT Wheat and corn are important grains in the agricultural scenario of Brazil, and demand adequate supply of nutrients, particularly nitrogen, in crop succession. The use of pig slurry (PS) as a full and/or partial alternative to mineral fertilization in crop areas has been identified as an important alternative for the disposal of this waste. Therefore, the objective of this study was to evaluate the utilization of PS as fertilizer in wheat/corn succession under some plant parameters and grain yield. The experiment was conducted under field in randomized block design with four replications and five treatments, three with PS (40, 80, 160 m³ ha-1) and two controls (no fertilization and mineral NPK fertilization), which were applied manually in the soil shortly after sowing the crops. The application of PS proved to be a significant source of nutrients in wheat/corn succession. In comparison to NPK fertilization, this increase was only of 5.4% and 4.7% for wheat and corn, respectively. PS is an efficient alternative and it can be used as a source of these nutrients in wheat/corn succession, and the use of 80 m3ha-1 provides satisfactory results for all evaluated variables.

scholarly journals Juvenile response to conifer release alternatives on aspen-white spruce boreal mixedwood sites.Part II: Quality of aspen regeneration

2005 ◽  
Vol 81 (4) ◽  
pp. 548-558 ◽  
Author(s):  
Sylvia Greifenhagen ◽  
Douglas G Pitt ◽  
Monique C Wester ◽  
F. Wayne Bell
Keyword(s):  
Populus Tremuloides ◽  
Block Design ◽  
Ground Level ◽  
Fibre Production ◽  
Post Treatment ◽  
Stem Volume ◽  
Randomized Block Design ◽  
Stump Sprouting ◽  
Root Suckering

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

scholarly journals Initial growth of Schizolobium parahybae in Brazilian Cerrado soil under liming and mineral fertilization

2016 ◽  
Vol 20 (10) ◽  
pp. 908-912 ◽  
Author(s):  
Ademilson Coneglian ◽  
Pedro H. P. Ribeiro ◽  
Bruno S. Melo ◽  
Rennan F. Pereira ◽  
Joáz Dorneles Junior
Keyword(s):  
Block Design ◽  
Market Potential ◽  
Initial Growth ◽  
Brazilian Cerrado ◽  
Mineral Fertilization ◽  
Randomized Block Design ◽  
Root Shoot Ratio ◽  
Soil Liming ◽  
Number Of Leaves ◽  
Soil Fertilizer

ABSTRACT High prices and the scarcity of hardwoods require the use of alternative wood sources, such as the Guapuruvu (Schizolobium parahybae), an arboreal species native to the Atlantic Forest, which has fast growth and high market potential. However, there is no information on its cultivation in the Brazilian Cerrado. Thus, this study aimed to analyze the contribution of mineral fertilization and liming in a Cerrado soil on the initial growth of Schizolobium parahybae. The experiment was set in a randomized block design, with 4 treatments (Cerrado soil; soil + liming; soil + fertilizer; and soil + fertilizer + liming) and 15 replicates. The following variables were analyzed: plant height, stem diameter, number of leaves, total, shoot, leaf, root and stem dry matter, and root/shoot ratio. The obtained data were subjected to the analysis of variance, Tukey test and regression analysis. During the initial growth, Schizolobium parahybae can be cultivated in a Brazilian Cerrado soil only under mineral fertilization, with no need for soil liming.

scholarly journals Productivity and quality of Mombasa grass under fertilization with pig deep-litter and NPK

2020 ◽  
Vol 24 (7) ◽  
pp. 437-443
Author(s):  
Marina da C. Guerrero ◽  
Tiago R. de Sousa ◽  
Saulo A. de Oliveira ◽  
Rômulo R. Caldeira ◽  
Adilson Pelá
Keyword(s):  
Block Design ◽  
Organic Fertilizer ◽  
Dry Mass ◽  
Point Of View ◽  
Neutral Detergent Fiber ◽  
Mineral Fertilizers ◽  
Panicum Maximum ◽  
Mineral Fertilization ◽  
Economic Point ◽  
Randomized Block Design

ABSTRACT The use of pig deep-litter (PDL) in pasture fertilization can be an important alternative from an environmental and economic point of view. This study was conducted to evaluate the fertilization with PDL exclusively or in association with mineral fertilizers on the quality and productivity of Panicum maximum cv. Mombasa. The experiment was carried out in Ipameri, GO, Brazil. The design was a randomized block design in a 2 x 5 factorial scheme with four repetitions, in plots of 24 m². The doses of PDL (0; 5; 10; 15 and 20 Mg ha-1) were tested, with or without fertilization with NPK (50 kg ha-1 of P2O5, 10 kg ha-1 of K2O and 10 kg ha-1 of N). The organic fertilizer was applied broadcast at the planting of the pasture, and the mineral fertilizers were split and applied at planting and as topdressing. Dry mass, crude protein, acid detergent fiber and neutral detergent fiber were evaluated. PDL doses associated with mineral fertilization led to linear increases from 52 to 282% in the analyzed variables and better bromatological composition. PDL application is beneficial to the production of pastures, and increasing applications up to the PDL dose of 20 Mg ha-1 associated with mineral fertilization promoted better quantitative and qualitative results. With exclusive fertilization with PDL, the gains in quality and productivity were more modest.

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