scholarly journals Influence of Nitrogenous Fertilizers on Guinea Grass Yield and Carrying Capacity in Lajas Valley

1969 ◽  
Vol 42 (4) ◽  
pp. 239-247 ◽  
Author(s):  
L. Rivera-Brenes ◽  
E. N. Colón-Torres ◽  
F. Gelpí ◽  
J. Torres-Más
Keyword(s):  
Ammonium Sulfate ◽  
Carrying Capacity ◽  
Block Design ◽  
Grazing Management ◽  
Annual Rainfall ◽  
Semiarid Region ◽  
Rotational Grazing ◽  
Randomized Block Design ◽  
Dry Spells ◽  
Guinea Grass

The Lajas Valley is a semiarid region located in the southwestern corner of the Island. Annual rainfall fluctuates from 40 to 60 inches with rather prolonged dry spells. Guinea grass is the prevailing and most important pasture forage. Very little or no fertilizer at all is used and, generally speaking, the grazing management is poor. In 1952, an experiment was started with Guinea grass submitted to different fertilizer treatments, under rotational grazing. A randomized-block design already described in another paper (3) was used and each treatment of 0, 40, and 80 pounds of nitrogen per acre was applied as ammonium sulfate every 4 months was replicated three times. Results obtained indicate that fertilization pays even in this relatively dry section of the Island.

scholarly journals Beef heifers grazing behavior and herbage intake in natural grassland under rotational grazing

2015 ◽  
Vol 45 (11) ◽  
pp. 2056-2062 ◽  
Author(s):  
Cezar Wankura Barbieri ◽  
Fernando Luiz Ferreira de Quadros ◽  
Felipe Jochims ◽  
Bruno Castro Kuinchtner ◽  
Thiago Henrique Nicola de Carvalho ◽  
...  
Keyword(s):  
Block Design ◽  
Beef Heifers ◽  
Rotational Grazing ◽  
Grazing Behavior ◽  
Bite Rate ◽  
Herbage Intake ◽  
Randomized Block Design ◽  
Thermal Sum ◽  
Natural Grassland ◽  
Rest Intervals

It was evaluated the effect of two rest intervals between grazing occupations in rotational grazing; 375 and 750 DD (degree-days); based on the cumulative thermal sum necessary for leaf expansion of native grasses of two functional groups over the grazing behavior variables from beef heifers with 12 months old. The experiment was conducted as a completely randomized block design, with two treatments, three replications and measures repeated over time. Grazing behavior was assessed in three occasions (Nov 2011, Jan and Mar 2012), with 24h each. The herbage intake was estimated using an external marker (Cr2O3). The leaf mass was similar among the rest intervals, with a mean of 1261kg DM ha-1. The average grazing time was 627.4min day-1 and bite rate was 37.1 bites min-1. The average number of daily meals was 5.9 with an average of 118.5 minutes. Number of feeding stations visited per minute was 6.1 and the feeding stations permanence time was of 12 seconds. There was a reduction only on grazing time and bite rate over the periods. The range of thermal sums evaluated to define the rest intervals in rotational grazing proved no effect on heifers' grazing behavior and herbage intake

scholarly journals ‘Pele de sapo’ melon grown under different irrigation depths and bioestimulant rates in the Semiarid region of Brazil

2020 ◽  
Vol 11 ◽  
pp. e3303
Author(s):  
Daíse Souza Reis Lima ◽  
Welson Lima Simões ◽  
José Aliçandro Bezerra da Silva ◽  
Magno do Nascimento Amorim ◽  
Alessandra Monteiro Salviano ◽  
...  
Keyword(s):  
Production Efficiency ◽  
Irrigation System ◽  
Block Design ◽  
Cold Season ◽  
Semiarid Region ◽  
Randomized Block Design ◽  
Relative Water ◽  
Chlorophyll A And B ◽  
Hot Season ◽  
Amino Acid Contents

The objective of this work was to evaluate physiological and biochemical responses of Pele de sapo melon to different irrigation depths (ID) and bioestimulant rates (BTM) to improve its production efficiency. The experiment was conducted in an experimental field in Juazeiro, BA, Brazil. A randomized block design in split split-plot arrangement was used, with four ID (60, 80, 100, and 120% of crop evapotranspiration – ETc) in the plots; five (BTM) (Stimulate® at 0, 0.6, 1.2, 2.4, and 4.8 L ha-1 applied via irrigation system during the flowering stage and after the fruiting stage) in the subplots; and two crop seasons (hot season, 23 to 39 °C; and cold season, 15 to 30 °C) in the sub-subplots. The plants were under daily drip irrigation and spacing of 2.0 × 0.3 m. The variables evaluated were: gas exchange, water use efficiency, chlorophyll a and b, relative water, sugar, and amino acid contents, and fruit yield. The results showed that the ID of 60% ETc resulted in water deficit, denoted by increases in solute concentrations, whereas the ID of 80% and 100% resulted in plants with good performance for biochemical, physiological, and production parameters in both crop seasons. The hot season, ID of 120% ETc, and BTM of 2.4 L ha-1 are recommended for Pele de sapo melon crops, since they result in the best physiological responses and fruit yields.

scholarly journals MORPHOPHYSIOLOGICAL AND PRODUCTIVE RESPONSES OF SUNFLOWER VARIETIES TO IRRIGATION

2018 ◽  
Vol 31 (1) ◽  
pp. 143-150
Author(s):  
WELSON LIMA SIMÕES ◽  
MARCOS ANTONIO DRUMOND ◽  
ANDERSON RAMOS DE OLIVEIRA ◽  
SÉRGIO LUIZ GONÇALVES ◽  
MIGUEL JULIO MACHADO GUIMARÃES
Keyword(s):  
Flowering Time ◽  
Plant Height ◽  
Agricultural Research ◽  
Block Design ◽  
River Valley ◽  
Semiarid Region ◽  
Local Climate ◽  
Sao Francisco River ◽  
Randomized Block Design ◽  
São Francisco River

ABSTRACT The high luminosity rates and high annual average temperatures of the Brazilian semiarid region, combined with the use of irrigation and adaptability of the sunflower crop to local climate, favor increased achene yield due to acceleration of morphophysiological processes. The objective of this work was to evaluate the morphophysiological and productive characteristics of sunflower varieties grown under drip irrigation in the Sub-Mid São Francisco River Valley. The experiment was conducted in the Experimental Field of the Brazilian Agricultural Research Corporation (Embrapa Semiarid), in Petrolina, State of Pernambuco, Brazil, in a randomized block design, with 21 sunflower varieties and four replications. The variables evaluated were flowering time, plant height, number of live leaves, stem and capitulum diameter, number of lodged and broken plants, stem curvature, relative chlorophyll index, photosynthesis, stomatal conductance, transpiration, average leaf temperature, 1000-achene weight and achene yield of the sunflower varieties. The treatments presented flowering time of 43 to 59 days after sowing, plant height of 1.0 to 1.4 m, capitulum diameter of 0.154 to 0.221 m, chlorophyll content of 30.8 to 33.98 Spad units and 1000-achene weight of 35.61 to 80.30 g. The sunflower varieties V7 and V8 stood out, with achene yields above 2,960 kg ha-1 and low number of lodged and broken plants, indicating a greater adaptability irrigation crops in the Sub-Mid São Francisco River Valley.

MACRONUTRIENTS ABSORPTION AND DRY MATTER ACCUMULATION IN GRAIN SORGHUM

2018 ◽  
Vol 17 (1) ◽  
pp. 15
Author(s):  
IRAN DIAS BORGES ◽  
ELAINE CRISTINA TEIXEIRA ◽  
LORENA MARTINS BRANDÃO ◽  
ANTÔNIO AUGUSTO NOGUEIRA FRANCO ◽  
MARCOS KOITI KONDO ◽  
...  
Keyword(s):  
Sorghum Bicolor ◽  
Dry Matter ◽  
Sandy Loam ◽  
Block Design ◽  
Grain Sorghum ◽  
Semiarid Region ◽  
Dry Matter Accumulation ◽  
Sigmoidal Function ◽  
Randomized Block Design ◽  
Red Latosol

ABSTRACT - The present study aimed to determine the curves of macronutrients and dry matter accumulation in grain sorghum DKB 599, grown in a semiarid region. A field experiment was conducted on a sandy loam eutrophic red Latosol (Oxisol) in Janaúba, State of Minas Gerais (MG), Brazil, in a randomized block design with four replications. As statistical method, a nonlinear regression, sigmoidal function with three parameters was used. After drying, the plants were weighed and ground to determine N, P, K, Ca, Mg and S concentration. Grain sorghum plants accumulate nutrients in their shoots in the following order: N> K> Ca> P> Mg> S. The highest concentrations of K and N were observed in stems and grains, respectively. In the conditions of this experiment, the most favorable time to perform nitrogen and potassium topdressing fertilization is when the plants present seven fully expanded leaves or 24 days after the emergency (DAE). Keywords: fertilization, growth, nutrition, Sorghum bicolor. ABSORÇÃO DE MACRONUTRIENTES E ACÚMULO DE MATÉRIA SECA NO SORGO GRANÍFERO RESUMO - Este trabalho teve como objetivo determinar as curvas de acúmulo de matéria seca e macronutrientes no sorgo DKB 599 cultivado em região semiárida. O experimento foi conduzido em campo sobre um Latossolo Vermelho eutrófico, de textura franco-argilosa, no município de Janaúba-MG, Brasil, em delineamento experimental de blocos casualizados, com quatro repetições. Utilizou-se o modelo de regressão não linear, função sigmoidal com três parâmetros como método estatístico. Após secagem, cada parte da planta foi pesada e moída para, em seguida, determinarem-se os teores de N, P, K, Ca, Mg e S. As plantas de sorgo granífero acumulam nutrientes em sua parte aérea na seguinte ordem: N > K > Ca > P > Mg > S. As maiores concentrações de K e N foram observadas, respectivamente, nos caules e nos grãos. Nas condições de condução do experimento, a época mais propícia para realizar a adubação nitrogenada e potássica em cobertura é quando as plantas apresentam sete folhas totalmente expandidas ou 24 dias após a emergência (DAE). Palavras-chave: fertilização, crescimento, nutrição, Sorghum bicolor.

scholarly journals Growth promotion of Guinea grass by diazotrophic bacteria1

2019 ◽  
Vol 49 ◽  
Author(s):  
Konrad Passos Silva ◽  
Gian Otávio Alves Silva ◽  
Tayla Évellin Oliveira ◽  
Adauton Vilela Rezende ◽  
Ligiane Aparecida Florentino
Keyword(s):  
Growth Promotion ◽  
Block Design ◽  
Dry Mass ◽  
Stem Diameter ◽  
Panicum Maximum ◽  
Diazotrophic Bacteria ◽  
Bacterial Strains ◽  
Randomized Block Design ◽  
Nitrogen Inputs ◽  
Guinea Grass

ABSTRACT The Panicum maximum species (cv. Mombaça) is a forage plant well adapted to the different edaphoclimatic conditions found in Brazil; however, it requires high nitrogen fertilizer doses to ensure high yields. The present study aimed to assess the inoculation effect with associative diazotrophic bacteria strains on the yield and bromatological characteristics of the Guinea grass. A randomized block design was used, consisting of 25 treatments, being 23 of them inoculated with diazotrophic bacteria and two without inoculation (one with and the other without mineral nitrogen), with four repetitions. The analyzed variables were stem diameter; leaf width and length; leaf, stem and root dry mass yield; crude protein; acid and neutral detergent fibers. There were no differences among the treatments for root dry mass, stem diameter and acid detergent fiber. For the remaining variables, a positive effect of the inoculation with diazotrophic bacteria was observed, particularly for the following Unifenas strains: 100-06, 100-13, 100-26, 100-30, 10-35, 100-54, 100-69, 100-71 and 100-94. This reveals the potential of these bacterial strains for use at the sustainable production of the Guinea grass with a reduction in the use of nitrogen inputs.

scholarly journals POTENCIAL DO USO DE ÁGUA RESIDUÁRIA NA SILVICULTURA UTILIZANDO ESPÉCIES NATIVAS DA CAATINGA

Irriga ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 93
Author(s):  
SILVANETE SEVERINO da SILVA ◽  
Cláudia Facini Reis ◽  
Salomão De Sousa Medeiros ◽  
Renan Ferreira da Nóbrega ◽  
José Dantas Neto
Keyword(s):  
Growth Rate ◽  
Native Species ◽  
Block Design ◽  
Semiarid Region ◽  
Biological Degradation ◽  
Randomized Block Design ◽  
Number Of Leaves ◽  
Agro Forestry ◽  
Daily Application ◽  
Wastewater Use

POTENCIAL DO USO DE ÁGUA RESIDUÁRIA NA SILVICULTURA UTILIZANDO ESPÉCIES NATIVAS DA CAATINGA   SILVANETE SEVERINO DA SILVA1; CLAÚDIA FACINI REIS2; SALOMÃO DE SOUSA MEDEIROS3; RENAN FERREIRA DA NÓBREGA4 E JOSÉ DANTAS NETO5 1Doutoranda em Engenharia Agrícola, UFCG, Campina Grande - Paraíba. Email: [email protected] e 3Doutor (a), Pesquisador (a) do INSA, Campina Grande - Paraíba. Email: [email protected]; Email: [email protected] Ambiental da Unidade Acadêmica de Ciências e Tecnologia Ambiental do Centro de Ciência e Tecnologia Agroalimentar da Universidade Federal de Campina Grande. Email: [email protected] do departamento de Engenharia Agrícola da Universidade Federal de Campina Grande. Email: [email protected]  1 RESUMO O cultivo de espécies nativas da caatinga, irrigadas com água residuária de esgoto doméstico, caracteriza-se como uma ação para recuperação de áreas degradadas para mitigação dos efeitos da seca. O objetivo da execução do presente trabalho foi avaliar o crescimento de espécies nativas na região semiárida. O ensaio foi conduzido em campo de áreas de solo com degradação agrícola e biológica. A aplicação dos tratamentos foi realizada 120 dias após o transplantio. Utilizou-se um delineamento em blocos casualizados, dispostos em faixas, com 10 tratamentos resultantes da combinação fatorial 2x5 (2 lâminas e 5 cultivares) com 4 repetições, totalizando 40 subparcelas. As espécies cultivadas foram: Aroeira branca - Astroium urundeuva (Allemão), Ipê roxo - Tabebuia avellanedae, Braúna – Schinopsis brasiliensis Engl, Catingueira – Caesalpinia pyramidalis e Freijó – Cordia trichotoma, em espaçamento 3x2 m, com área útil de 1,98 m2, com área total de 3600 m². As irrigações foram feitas com 2 lâminas semanais e 3 frequências (aplicação diária de 2,8 L dia-1, aplicação duas vezes por semana de 7,0 L dia-1, aplicação diária de 1,4 L dia-1, aplicação uma vez por semana 7,0 L dia-1 e aplicação uma vez por semana 14,0 L dia-1). Avaliou-se o crescimento de plantas aos 60 dias após o transplantio, através da mensuração da altura da planta-1, diâmetro caulinar e número de folhas planta-1. O Ipê Roxo e Freijó apresentaram maior índice de crescimento. Palavras-chaves: Irrigação, Crescimento, Degradação Agrícola.  SILVA, S. S. da; REIS, C. F.; MEDEIROS, S. de S.; NÓBREGA, R. F. da; DANTAS NETO, J.POTENTIAL OF WASTEWATER USE IN FORESTRY USING CAATINGA NATIVE SPECIES  2 ABSTRACT We studied the growth of native species in the semiarid region. The test was conducted in soil areas, with agricultural and biological degradation. The application of the treatments was held 120 days after transplanting. We used a randomized block design, arranged in groups, with 25 treatments resulting from the factorial combination 5x5 (5 treatments and 5 cultivars) with 4 repetitions, totaling 100 subplots. Cultured species were braúna, catingueira white mastic, freijó and purple ipe tree, in 3x2 spacing, with a floor area of 1.98 m², in a total area of 3600m². The frequency of applied irrigation was: daily application 2.8 L day-1, application twice a week from 7 L day -1, daily application of 1.4 L day-1, applied once a week 7 L day-1 and application once a week 14 L day-1, except Saturdays and Sundays, respectively. We evaluated the growth of agro-forestry plants at 60 days after transplanting (DAT), by measuring plant-1 height, stem diameter and number of leaves in plant-1. The Purple Ipe tree and Freijó showed a higher growth rate. Keywords: irrigation, growth, agricultural degradation. 

scholarly journals CRESCIMENTO E PRODUTIVIDADE DO MAMOEIRO FERTIRRIGADO COM DIFERENTES COMBINAÇÕES DE FONTES NITROGENADAS

Irriga ◽  
2007 ◽  
Vol 12 (4) ◽  
pp. 575-586 ◽  
Author(s):  
Tatyane Velasco Souza ◽  
Vital Pedro da Silva Paz ◽  
Eugênio Ferreira Coelho ◽  
Francisco Adriano de Carvalho Pereira ◽  
Carlos Alberto da Silva Ledo
Keyword(s):  
Ammonium Sulfate ◽  
Irrigation Water ◽  
Growth Parameters ◽  
Block Design ◽  
Calcium Nitrate ◽  
Nitrogen Sources ◽  
Growth And Yield ◽  
Biometric Data ◽  
Randomized Block Design ◽  
Significant Difference

CRESCIMENTO E PRODUTIVIDADE DO MAMOEIRO FERTIRRIGADO COM DIFERENTES COMBINAÇÕES DE FONTES NITROGENADAS   Tatyane Velasco Souza1; Vital Pedro da Silva Paz1; Eugênio Ferreira Coelho2; Francisco Adriano de Carvalho Pereira1; Carlos Alberto da Silva Ledo21Centro de Ciências Agrárias, Universidade Federal da Bahia, Cruz das Almas, BA, [email protected] 2Embrapa Mandioca e Fruticultura Tropical, Cruz das Almas, BA, [email protected]  1 RESUMO O trabalho teve como objetivo estudar os efeitos de diferentes combinações de fontes nitrogenadas (sulfato de amônio e nitrato de cálcio), aplicadas via água de irrigação, sobre os componentes biométricos e de produção do mamoeiro Tainung n°1. O experimento foi desenvolvido no campo experimental da Embrapa Mandioca e Fruticultura Tropical, em Cruz das Almas, Bahia, no delineamento em blocos casualizados, com cinco tratamentos e cinco repetições. Foram obtidos dados biométricos (altura de planta, diâmetro de caule e área foliar) e de produção. Não houve diferença significativa entre as médias de crescimento e produtividade do mamoeiro nos diversos tratamentos, indicando não haver diferença entre as fontes nítrica e amoniacal para fertirrigação. A substituição do sulfato de amônio por nitrato de cálcio como única fonte nitrogenada para o mamoeiro promoveu um ganho de produtividade de 14,79%, elevando, porém, o custo de produção em 649,84%. A aplicação de nitrogênio ao solo no período de 12 meses, considerando 50% do período com sulfato de amônio e 50% com de nitrato de cálcio, não causou acidificação ou aumento do pH do solo. UNITERMOS: Fertirrigação, parâmetros biométricos, produtividade.  SOUZA, T. V.; PAZ, V. P. da S.; COELHO, E. F.; PEREIRA, F. A. de C.; LEDO, C. A. da S. GROWTH AND YIELD OF PAPAYA UNDER COMBINATIONS OF NITROGEN SOURCES APPLIED BY IRRIGATION WATER  2 ABSTRACT The purpose of this work was to study the effects of different combinations of nitrogen sources (ammonium sulfate and calcium nitrate), applied by irrigation water, on biometric and production parameters of papaya cv. Tainung # 1. The experiment was carried out at Embrapa Cassava and Tropical Fruits, in Cruz dasAlmas,Bahia, under a randomized block design, with five treatments and five replications. Biometric data (plant height, stem diameter and leaf area) and production ones were collected. There was no significant difference among treatments, i.e., no difference between the nitrical and ammoniacal nitrogen sources at growth and production stages of the crop. The replacement of ammonium sulfate by calcium nitrate as the only nitrogen source for papaya provided a gain of 14.79% in yield, but the productions of cost increased 649.84%. The application of nitrogen to the soil during 12 months by ammonium sulfate during 50% of the period and calcium nitrate in the remaining did not cause acidification or increase of soil pH.KEYWORDS: Fertirrigation, growth parameters, productivity 

scholarly journals GGE BIPLOT ANALYSIS TO RECOMMEND COWPEA CULTIVARS FOR GREEN GRAIN PRODUCTION

2020 ◽  
Vol 33 (2) ◽  
pp. 321-331
Author(s):  
LEANE FIALHO DE MELO ◽  
MARCELO DE SOUSA PINHEIRO ◽  
RENATA FERNANDES DE MATOS ◽  
JÚLIO CÉSAR DOVALE ◽  
CÂNDIDA HERMÍNIA CAMPOS DE MAGALHÃES BERTINI
Keyword(s):  
Block Design ◽  
The State ◽  
Semiarid Region ◽  
Gge Biplot ◽  
Grain Production ◽  
Stability Analyses ◽  
Cowpea Cultivars ◽  
Climatic Regions ◽  
Randomized Block Design ◽  
The Ideal

ABSTRACT Genotypes can respond differently to environments; thus, studies on adaptability and production stability are important to assist breeders in the identification and recommendation of cultivars. The objective of this work was to determine the adaptability and production stability of cowpea genotypes focused on subsidize recommendations of cultivars for green grain production in the state of Ceará, Brazil. Five assays were conducted in different locations in two climatic regions of the state of Ceará: a tropical mild hot semiarid region encompassing the municipalities of Acaraú, Pentecoste, and Crato, and a tropical hot semiarid region encompassing the municipalities of Mauriti and Madalena. Twenty cowpea genotypes-12 elite lines and 8 cultivars-were evaluated for cultivation value and use, using a randomized block design, with four replications. The results were subjected to analyses of variance and adaptability and green grain yield stability analyses by GGE biplot multivariate analysis. The effects of genotypes, environments, and G×E were significant, denoting different responses of genotypes in different locations. The results of the adaptability and stability analyses by the GGE biplot method showed that the two principal components explained 72.17% of the total variation, allowing reliable bidimensional projections. The municipality of Crato was the ideal location for tests and the lines MNC05-847B-123 and MNC00-595F-27 showed good production, adaptation, and stability, and can be recommended for green grain production in the state of Ceará, Brazil.

Differences among orchardgrass cultivars in response to hay and rotational grazing management

1995 ◽  
Vol 75 (1) ◽  
pp. 147-157 ◽  
Author(s):  
Y. A. Papadopoulos ◽  
M. A. Price ◽  
L. F. Laflamme ◽  
N. R. Fulton ◽  
G. M. Hunter ◽  
...  
Keyword(s):  
Management Practice ◽  
Block Design ◽  
Grazing Management ◽  
First Year ◽  
Rotational Grazing ◽  
Pasture Management ◽  
Area Index ◽  
Cultivar Development ◽  
Dactylis Glomerata L ◽  
Tiller Density

This study was conducted to compare orchardgrass (Dactylis glomerata L.) cultivar performance under contrasting management systems (hay vs. rotational grazing) during the first two production years. The trial consisted of eight orchardgrass cultivars broadcast seeded in a randomized complete-block design, with three replications. The perimeter of each replication was fenced, and the area was divided into two sections. The first section was managed as a simulated hay production system. The second section was managed by simulating a rotational grazing system using crossbred ewes. Dry matter (DM) yield was determined before harvesting or grazing. Tiller density (TD) and leaf area index (LAI) were measured on four cultivars prior to harvesting and grazing. Excellent DM yield and persistence were obtained from all cultivars in both years under hay management but varied considerably under grazing management. Cultivar ranking according to DM yield under hay management was different from ranking based on performance under pasture management. One group of four cultivars had a decrease in yield of 19.9% in the second year of grazing, over the first year, but yield of the remaining group increased by 5.7% (SED = 9.83). Production of hay was similar for both groups. Early-maturing cultivars yielded 7% more DM and had higher crop growth rates (CGR), LAI and TD than late-maturing cultivars. Growth characteristics of orchardgrass cultivars as measured by DM yield, CGR, LAI and TD were modified by management practice. As a result, evaluating orchardgrass varieties under a hay management system was not effective in determining their performance under grazing. Key words:Dactylis glomerata, cultivar evaluation, cultivar development, grazing, yield, yield components

scholarly journals Growth and Biomass Production of Moringa Cultivated in Semiarid Region as Responses to Row Spacing and Cuts

2021 ◽  
Vol 44 (2) ◽  
pp. 183-187
Author(s):  
R. S. Santos ◽  
J. V. Emerenciano Neto ◽  
B. R. S. Bonfim ◽  
G. S. Difante ◽  
J. D. V. Bezerra ◽  
...  
Keyword(s):  
Biomass Production ◽  
Dry Matter ◽  
Block Design ◽  
Semiarid Region ◽  
Branch Number ◽  
Randomized Block Design ◽  
Matter Production ◽  
The Masses ◽  
Vegetal Species ◽  
Moringa Oleifera Lam

The management of the moringa to produce biomass, as it is for other vegetal species, must consider some aspects that foster productivity. Among these aspects, cultivation density is a crucial element. This research aimed to assess the effects of spacing and cuts on the growth of the moringa. The treatments consisted of four spacings: 0.5 x 1.0 m; 0.83 x 1.0 m; 1.25 x 1.0 m; and 1.66 x 1.0 m. The experimental design was a randomized-block design with five repetitions. The standardization cut of the plants was performed at a one-meter height from the ground, fifty days after the seedlings transplantation. The assessments were performed every sixty days, totaling six cuts. Spacing impacted the growth and biomass production but did not affect the height of the plants. The stem diameter, branch number, and the plant’s mass increased at increasing the spacing. On the other side, the total mass and the masses of the stem, the leaflet, and the petiole per hectare decreased at increasing the spacing. Spacing did not affect the ratio between leaf/stem and leaflet/petiole. Plant growth and dry matter production were highest after the first two cuts and decreased significantly from the third cut on. The spacing of 0.5 x 1.0 m should be used for planting Moringa oleifera Lam. because this configuration, even reducing the gain per plant, increased the production of dry matter per unit area.

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