scholarly journals Nutrient stock in the forest component in a crop-livestock-forest integration system in Central Brazil

2021 ◽  
Vol 12 (2) ◽  
pp. 86-97
Author(s):  
Jorge Luís Sousa Ferreira ◽  
Francine Neves Calil ◽  
Carlos De Melo e Silva Neto
Keyword(s):  
Biomass Conversion ◽  
Nutrient Utilization ◽  
Tissue Analysis ◽  
Above Ground Biomass ◽  
Integration System ◽  
Wood Component ◽  
Central Brazil ◽  
Utilization Coefficient ◽  
Nutrient Stock ◽  
Eucalyptus Urograndis

Integrated systems are sustainable alternatives, where agricultural, forestry, and/or livestock components occupy a given area through consortium, rotation, or succession. Considering this importance, this work had as objective to quantify the stock of above-ground biomass (wood, leaves, bark, and branches) of 6 years Eucalyptus urograndis in a crop-livestock-forest integration system (CLFS). It also involved calculation of the nutrient utilization in biomass conversion through the Biological Utilization Coefficient (BUC) and design of different export scenarios of these nutrients through the harvest in order to calculate the reduction in the demand for inputs. Nutrient stock was determined from the biomass sampled in the field and from the plant tissue analysis. It is verified that the highest concentrations of macronutrients are present in wood component, except for Ca. The concentration gradient of micronutrients was: Leaves> Fe> Mn> B> Cu> Zn; Branches and Bark: Fe> Mn > B> Zn> Cu; and wood: Mn > Fe > Zn > Cu > B. Considering BUC conversion rate decline, it presented the following order: S> P> Mg> Ca> N> K for macronutrients and B> Cu> Zn> Fe> Mn for micronutrients. The most appropriate export scenario was to harvest only timber component to minimize the nutritional export. The nutritional dynamics within the eucalyptus are altered according to the diametric structure of the trees. The nutritional elements are concentrated in different compartments according to the availability and need of the plants. 

scholarly journals BIOMASSA E NUTRIENTES DE EUCALIPTO CULTIVADO EM SISTEMA AGROSSILVIPASTORIL

Nativa ◽  
2018 ◽  
Vol 6 ◽  
pp. 754
Author(s):  
Charlote Wink ◽  
Anderson Lange ◽  
Kamile Zompero Araújo ◽  
Ana Paula Silveira ◽  
Maurel Behling ◽  
...  
Keyword(s):  
Eucalyptus Grandis ◽  
Triple Line ◽  
Nutrient Content ◽  
Integration System ◽  
Line Arrangement ◽  
Residual Biomass ◽  
Technological Unit ◽  
Simple Arrangement ◽  
Nutrient Stock ◽  
Hybrid Eucalyptus

O objetivo foi quantificar a biomassa e o estoque de nutrientes do híbrido Eucalyptus grandis Hill ex Maiden x E. urophylla S. T. Blake (clone H13) aos 60 meses em sistema agrossilvipastoril. O estudo da biomassa residual (folhas e galhos finos), galhos grossos, madeira e casca e do estoque de nutrientes de eucalipto foi realizado na unidade de referência tecnológica de integração lavoura-pecuária-floresta em Nova Canaã do Norte, MT, cultivado em arranjo simples (2x20 m), duplo (3x2x20 m), triplo (3x2x20 m) e em monocultivo (4x3 m). Apenas a biomassa de galhos grossos, madeira e casca apresentaram diferenças significativas entre arranjos. Os nutrientes se acumularam em maior quantidade na madeira, e em ordem decrescente na casca, biomassa residual e nos galhos grossos. A biomassa residual, galhos grossos e casca correspondem a fração expressiva de nutrientes que permanece no sistema, e que contribuem para menor reposição na manutenção desses, após a colheita. O arranjo triplo apresentou maior acúmulo nutricional comparado ao arranjo simples e duplo. A eficiência nutricional é maior no arranjo de linha tripla devido a maior competição intraespecífica. O teor de nutrientes nas diferentes posições ao longo do fuste não apresentou variações nutricionais significativas para a madeira, diferentemente para a casca.Palavras-chave: sistema iLPF, nutrição florestal, compartimentos. BIOMASS AND NUTRIENTS OF EUCALYPTUS CULTIVATED IN AGROSSILVIPASTORAL SYSTEM ABSTRACT:The objective was to quantify the biomass and nutrient stock of the hybrid Eucalyptus grandis Hill ex Maiden x E. urophylla S. T. Blake, (clone H13) at 60 months in the agrosilvipastoril system. The study of the residual biomass (leaves and thin branches), thick branches, wood and bark and of the nutrient stock of eucalyptus was carried out in the technological unit of crop-livestock-forest integration in Nova Canaã do Norte, MT, cultivated in a simple arrangement (2x20 m), double (3x2x20 m), triple (3x2x20 m) and monoculture (4x3 m). Only the biomass of thick branches, wood and bark presented significant differences between arrangements. The nutrients accumulate in greater quantity in the wood, and in descending order in the bark, residual biomass and in the thick branches. Residual biomass, thick branches and bark correspond to the expressive fraction of nutrients that remain in the system, and which contribute to a lower replacement in the maintenance of these, after harvesting. The triple arrangement presented greater nutritional accumulation compared to the single and double arrangement. The nutritional efficiency is higher in the triple line arrangement due to greater intraspecific competition. The nutrient content in the different positions along the stem did not present significant nutritional variations for the wood, differently for the bark.Keywords: CLF integration system, forest nutrition, compartments.

Biomass Production and Nutritional Efficiency in Eucalyptus Genotypes in the Pampa Biome

2019 ◽  
pp. 1-10
Author(s):  
Claudiney Do Couto Guimarães ◽  
Mauro Valdir Schumacher ◽  
Dione Richer Momolli ◽  
Huan Pablo de Souza ◽  
Aline Aparecida Ludvichak ◽  
...  
Keyword(s):  
Biomass Production ◽  
Eucalyptus Grandis ◽  
Annual Increment ◽  
Utilization Coefficient ◽  
Pampa Biome ◽  
Eucalyptus Dunnii ◽  
Biomass Components ◽  
Mean Annual Increment ◽  
Eucalyptus Urograndis

The objective of this work was to determine biomass production and nutritional efficiency in three eucalyptus genotypes in the Pampa Biome. For determination of biomass and nutritional characterization, nine medium trees per genotype were sampled, separated in the components leaf, branch, bark, wood and root. The nutritional efficiency of the biomass components was determined using the biological utilization coefficient (BUC). The highest biomass production and mean annual increment were observed in the Eucalyptus urograndis hybrid with 158 Mg ha-1 and 47.2 m³ ha-1, followed by Eucalyptus grandis with 137 Mg ha-1 and 39.7 m³ ha-1 and Eucalyptus dunnii with 122 Mg ha-1 and 23.2 m³ ha-1. For wood, the best nutritional efficiency was provided by Eucalytpus urograndis for P, Ca, and Mn, followed by Eucalytpus grandis for N and Mg, and Eucalytpus dunnii for K.

Growth, biomass and nutrient stock in mixed-species planting of hybrid Eucalyptus urograndis and Acacia mearnsii in Southern Brazil

New Forests ◽  
2021 ◽  
Author(s):  
Aline Aparecida Ludvichak ◽  
Mauro Valdir Schumacher ◽  
Márcio Viera ◽  
Kristiana Fiorentin dos Santos ◽  
Dione Richer Momolli
Keyword(s):  
Southern Brazil ◽  
Mixed Species ◽  
Acacia Mearnsii ◽  
Nutrient Stock ◽  
Hybrid Eucalyptus ◽  
Eucalyptus Urograndis

scholarly journals EUCALIPYTUS LITTER CONTRIBUTION TO THE INTEGRATED CROP-LIVESTOCK SYSTEM

FLORESTA ◽  
2019 ◽  
Vol 49 (4) ◽  
pp. 841
Author(s):  
Charlote Wink ◽  
Helio Tonini ◽  
Flavia De Souza Damascena ◽  
Marina Moura Morales
Keyword(s):  
Nutrient Content ◽  
Probability Level ◽  
Monthly Basis ◽  
Integration System ◽  
Nutrient Deposition ◽  
Nutrient Stock ◽  
Litter Deposition ◽  
System Data ◽  
Crop System ◽  
Livestock System

The aim of this study is to assess eucalyptus litter and nutrient deposition on a monthly basis, at the age 47 to 58 years, in integrated eucalyptus with crop system (ICF), eucalyptus with livestock (ILF) and eucalyptus monoculture (F). Integration system data were compared through t test and compared to eucalyptus monoculture through ANAVA and Duncan test, at 5% probability level. Annual litter deposition reached 0.63 t ha-1 year in CFI, 0.43 t ha-1 year in LFI and 6.34 t ha-1 year in the monoculture system. The total and fractioned litter deposition in integration systems (0.19 to 0.26 kg.m-2) was significantly different from the monoculture system (0.63 kg.m-2) at collector area level, however, integration systems did not differ from one another at hectare level. The same trend was observed for nutrient stock in different compartments of the assessed litter. Regardless of the production system, the leaf fraction was the most representative factor in litter composition, which was followed by branches and bark. Nutrient content was similar among the tested treatments. Finally, nutrient stock was higher in the monoculture system; the highest nutritional contribution was observed in CFI between the assessed integration systems.

Selection of Models for Above-Ground Biomass in a Eucalyptus urograndis Stand

2019 ◽  
pp. 1-9
Author(s):  
Renata Reis de Carvalho ◽  
Dione Richer Momolli ◽  
Mauro Valdir Schumacher
Keyword(s):  
Total Biomass ◽  
Above Ground Biomass ◽  
Best Management ◽  
Ground Biomass ◽  
Management Techniques ◽  
Stepwise Procedure ◽  
South Of Brazil ◽  
Forest Manager ◽  
Eucalyptus Urograndis ◽  
Selection Of

The quantification of biomass is an important tool that helps the forest manager to define the course of the enterprise and the best management techniques. In view of this situation, the objective of the present study was to perform the modeling of above - ground biomass in the different components in Eucalyptus urograndis stands at 4.5 years of age. The stand is located in the south of Brazil, municipality of São Gabriel. Four plots of 577.5 m² were installed and all DBH and heights of 20% of the trees were measured. Four diameter classes were defined, with 3 trees being felled in each of them. All the biomass was weighed in leaves, branches, bark and wood and through samples the moisture content in each component was determined. The modeling showed reliability of 96% for wood estimation and biomass total. The total biomass was 65 Mg ha-1, of these, 72% of wood. The modeling with stepwise procedure presented good distribution of the residues. Through the easily obtained variables such as DBH and height it is possible to determine the volume of biomass accurately.

Technologies for Biomass Conversion

2006 ◽  
Author(s):  
Felicia Bucura ◽  
Violeta Niculescu ◽  
Elena David ◽  
Claudia Sisu ◽  
Marius Constantinescum
Keyword(s):  
Biomass Conversion

Frontier and Western History in Central Brazil

2019 ◽  
Vol 9 (1) ◽  
pp. 211-214
Author(s):  
Donald Worster
Keyword(s):  
Rio De Janeiro ◽  
Western History ◽  
Central Brazil

Frontier and Western History in Central Brazil Dutra e Silva, S. No Oeste, a terra e o céu: a expansão da fronteira agrícola no Brasil Central (Rio de Janeiro: Mauad X, 2017)

ESTIMATION OF ABOVE GROUND BIOMASS OF THE THREE SITES (GRAZED SITE, PROTECTED SITE AND SEED SOWN SITE) FOR COMPARING THEIR PRODUCTIVITY IN KASHMIR VALLEY

2017 ◽  
Vol 23 (2) ◽  
Author(s):  
AFSHAN ANJUM BABA ◽  
SYED NASEEM UL-ZAFAR GEELANI ◽  
ISHRAT SALEEM ◽  
MOHIT HUSAIN ◽  
PERVEZ AHMAD KHAN ◽  
...  
Keyword(s):  
Protected Areas ◽  
Aboveground Biomass ◽  
Plant Biomass ◽  
Summer Season ◽  
Above Ground Biomass ◽  
Spring Season ◽  
Kashmir Valley ◽  
Ground Biomass ◽  
Maximum Value ◽  
Protected Site

The plant biomass for protected areas was maximum in summer (1221.56 g/m2) and minimum in winter (290.62 g/m2) as against grazed areas having maximum value 590.81 g/m2 in autumn and minimum 183.75 g/m2 in winter. Study revealed that at Protected site (Kanidajan) the above ground biomass ranged was from a minimum (1.11 t ha-1) in the spring season to a maximum (4.58 t ha-1) in the summer season while at Grazed site (Yousmarag), the aboveground biomass varied from a minimum (0.54 t ha-1) in the spring season to a maximum of 1.48 t ha-1 in summer seasonandat Seed sown site (Badipora), the lowest value of aboveground biomass obtained was 4.46 t ha-1 in spring while as the highest (7.98 t ha-1) was obtained in summer.

Energetic comparison of some stump-removing methods

2014 ◽  
Vol 10 (1) ◽  
pp. 35-51
Author(s):  
I. Czupy
Keyword(s):  
Alternative Energy ◽  
Fossil Fuel ◽  
Alternating Current ◽  
Above Ground Biomass ◽  
Alternative Energy Sources ◽  
Wide Domain ◽  
Fuel Substitution ◽  
Unused Resource ◽  
Root Connection ◽  
Different Soils

Concerns about climate change and fossil fuel shortages are encouraging interest in stumps, as alternative energy sources. Stumps are an almost unused resource in the context of bio fuels. Stump harvesting signifies an intensification of forest management compared with conventional stem-only or above-ground biomass-only harvesting. There are many benefits of stump harvesting. These include: the production of wood fuel, fossil fuel substitution, and improved soil preparation.Removing tree trunks in Hungary has been going on according to the principle of stump extraction, which means stumps are removed by grabbing technology. Experiments have been carried out to reduce the extraction force. In the Great Hungarian Lowland, where large areas require the operation implementation, stump extraction is done by special, hydraulic driven baggers equipped with a special bucket. During operation of the equipment, we carried out measurements of the extraction force and the time requirement. The experiments are designed to carry out the measurements with different soils and different tree species. According to our proposal the suitable force and torque required to remove stumps can be significantly reduced if before the lifting the soil — root connection is loosened. One of the possible ways to implement this task is the use of vibration. Since relatively great vibration power and wide domain of frequency are necessary, therefore we prepared the loosening machinery elements of alternating-current hydraulics system. Based on constructions variants we created a tractor-mounted experimental alternating-current hydraulic stump-loosening machine. It was designed with the ability to produce horizontal vibration in order to loosen stumps.

Sign in / Sign up

Export Citation Format

Share Document