scholarly journals Production of BRS Itaim cowpea cultivar based on plant population density

2019 ◽  
pp. 377
Author(s):  
Laerte Gustavo Pivetta ◽  
Dácio Olibone ◽  
Edvan Costa da Silva ◽  
Ana Paula Olibone ◽  
Gilberto Keres ◽  
...  
Keyword(s):  
Population Density ◽  
Grain Yield ◽  
Block Design ◽  
Plant Population ◽  
Large Area ◽  
Population Densities ◽  
Mato Grosso ◽  
Randomized Block Design ◽  
Plant Population Density ◽  
Pod Length

Cowpea has great potential for cultivation and rotation in Mato Grosso State and in Brazilian Cerrado due to the large area available in these locations in the off-season. The aim of the current study is to analyze the yield of cowpea  (BRS Itaim cultivar) grown in non-irrigated soil in Sorriso County-MT, based on plant population density. The experiment was carried out in commercial area, on March 8, 2015; it followed a randomized block design, with six population densities and four replicates. Population densities comprising 80, 120, 160, 200, 240, and 280 thousand plants per hectare were used in the experiment. Experimental plots encompassed four 5-meter-long rows with 0.45-meter spacing between them. Final plant stand (plants ha-1), number of pods per plant, number of grains per pod, pod length (cm), weight of one hundred grains (g) and grain yield (kg ha-1) in the useful plot were evaluated at harvest time. The number of pods per plant has linearly decreased as population density increased. The number of seeds per pod, pod length and weight of one hundred grains did not change due to population density. Population density of 230 thousand plants ha-1 has enabled the highest grain yield under the tested conditions.

Grain Yield Gains and Associated Traits in Tropical X Temperate Maize Germplasm Under High and Low Plant Density

2021 ◽  
Author(s):  
Vince Ndou ◽  
Edmore Gasura ◽  
Pauline Chivenge ◽  
John Derera
Keyword(s):  
Population Density ◽  
Grain Yield ◽  
Plant Density ◽  
Plant Population ◽  
Population Densities ◽  
Genetic Gains ◽  
Maize Germplasm ◽  
High Plant Density ◽  
Number Of Leaves ◽  
Plant Population Density

Abstract Development of ideal breeding and crop management strategies that can improve maize grain yield under tropical environments is crucial. In the temperate regions, such yield improvements were achieved through use of genotypes that adapt high plant population density stress. However, tropical germplasm has poor tolerance to high plant population density stress, and thus it should be improved by temperate maize. The aim of this study was to estimate the genetic gains and identify traits associated with such gains in stable and high yielding temperate x tropical hybrids under low and high plant population densities. A total of 200 hybrids derived from a line x tester mating design of tropical x temperate germplasm were developed. These hybrids were evaluated for grain yield and allied traits under varied plant population densities. High yielding and stable hybrids, such as 15XH214, 15XH215 and 15XH121 were resistant to lodging and had higher number of leaves above the cob. The high genetic gains of 26% and desirable stress tolerance indices of these hybrids made them better performers over check hybrids under high plant population density. At high plant population density yield was correlated to stem lodging and number of leaves above the cob. Future gains in grain yield of these hybrids derived from temperate x tropical maize germplasm can be achieved by exploiting indirect selection for resistance to stem lodging and increased number of leaves above the cob under high plant density conditions.

scholarly journals AGRONOMIC PERFORMANCE OF COWPEA CULTIVARS DEPENDING ON SOWING SEASONS IN THE CERRADO BIOME

2017 ◽  
Vol 30 (2) ◽  
pp. 361-369 ◽  
Author(s):  
FERNANDO DA SILVA ALMEIDA ◽  
FÁBIO LUIZ CHECCHIO MINGOTTE ◽  
LEANDRO BORGES LEMOS ◽  
MÁRCIO JOSÉ DE SANTANA
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Plant Population ◽  
Agronomic Performance ◽  
Grain Yields ◽  
Cerrado Biome ◽  
Cowpea Cultivars ◽  
Randomized Block Design ◽  
Full Flowering ◽  
Pod Length

ABSTRACT The objective of this work was to assess the agronomic performance of cowpea cultivars depending on sowing seasons in the Cerrado biome. Thus, an experiment was conducted in Uberaba, State of Minas Gerais, Brazil, in a complete randomized block design, in a 6x3 factorial arrangement, using six cowpea cultivars (BRS-Itaim, BRS-Guariba, BRS-Potengi, BRS-Cauamé, BRS-Novaera and BRS-Tumucumaque) and three sowing seasons (Dec 14, 2012; Jan 14, 2013; and Feb 14, 2013), with four replications. The interaction between the cultivars and sowing seasons was assessed regarding the number of days for full flowering, number of days for pod maturation, number of trifoliate leaves, height of the first pod -bearing node, pod length, number of pods per plant, final plant population, 100-grain weight and grain yield. The cowpea cultivars sown in December produced the lowest numbers of pods per plant and grains per pod, resulting in the lowest grain yields. The cultivar BRS-Tumucumaque had the highest grain yield in the January sowing. The highest grain yields were found in the February sowing, especially when the cultivars BRS-Itaim (3,439 kg ha-1), BRS-Novaera (3,435 kg ha-1), BRS-Guariba (3,168 kg ha-1) and BRS-Potengi (3,107 kg ha-1) was used.

scholarly journals Effects of population density on cauliflower crop (Brassica oleracea L. var. botrytis)

1981 ◽  
Vol 38 (1) ◽  
pp. 1-10
Author(s):  
Keigo Minami ◽  
Ricardo Victoria Fº
Keyword(s):  
Population Density ◽  
Brassica Oleracea ◽  
Plant Population ◽  
Population Densities ◽  
Plant Population Density ◽  
Brassica Oleracea L ◽  
Quality Weight

An experiment was carried out to study the effects of the following population densities cauliflowers (plants per ha): 20,833 (0.60 m x 0.80 m), 25,641 (0.60 m x 0.65 m), ....37.037 (0.60 m x 0.45 m) , 55.555 (.0.60 m x 0.30 m), and 111,111 (0,60 m x 0,15 m) ; variety Snow ball. It was concluded that the effects of plant population density are greater on curd quality (weight and size) than on production per ha. The best plant population density to produce cauliflowers curd for Brazil market is from 20,000 to 25,000 plants/ha while for mini-curd is above 55,000 plants/ha.

scholarly journals Plant population is the function of grain yield of maize

2021 ◽  
pp. 103-107
Author(s):  
Mian MAK ◽  
Kakon SS ◽  
Zannat ST ◽  
Begum AA
Keyword(s):  
Population Density ◽  
Grain Yield ◽  
Functional Relationship ◽  
Functional Model ◽  
Plant Population ◽  
Rabi Season ◽  
Area Index ◽  
Good Consistency ◽  
Plant Population Density ◽  
Hybrid Maize

A field experiment on hybrid maize with different plant population density was conducted at the Agronomy field of BARI, Joydebpur, Gazipur during the consecutive rabi season of 2019-2020 and 2020-2021. Five plant population density viz; T1= 66666 plants/ha (75cm × 20cm spacing: 6.67 plants/m2), T2= 83333 plants/ha (60cm × 20cm spacing:8.33 plants/m2), T3=100000 plants/ha (50cm × 20cm spacing:10 plants/m2), T4=125000 plants/ha (40cm × 20cm spacing:12.5 plants/m2) and T5=166666 plants/ha (30cm × 20cm spacing:16.67 plants/m2) were used in the experiment. LAI (leaf area index) and TDM (total dry matter) increased with the increase of plant population, those influenced grain yield of maize. The highest grain yield (10.12-10.78 t/ha) was recorded in T3 (100000 plants/ha) and the lowest (5.02-5.33t/ha) in T5 (166666 plants/ha) treatment. Functional relationship between plant population and grain yield of maize was established as Y = 2.0795x-0.1067x2; (R² = 0.92). The effect of plant population on the grain yield of maize could be explained 92% by the functional model. The co- efficient indicated that increase of one plant/m2 would increase grain yield at the rate of 2.0795 t/ha up to a certain limit. The estimated optimum plant population was 9.74 plants/m2 (974000 plants/ha) through functional model. Then the predicted maximum grain yield would be 10.13 t/ha at that optimum plant population of 9.74 plants/m2 (974000 plants/ha). There existed a good consistency between observed and predicted grain yield of maize (r=0.96 at p<0.01 and R2=0.97; using the developed functional model).

scholarly journals Selection of Cowpea Lines for Multiple Traits by GYT Biplot Analysis

2020 ◽  
Vol 8 (2) ◽  
pp. 124
Author(s):  
Derivaldo Pureza da Cruz ◽  
Tâmara Rebecca Albuquerque de Oliveira ◽  
Andréa Barros Silva Gomes ◽  
Camila Queiroz da Silva Sanfim de Sant'Anna ◽  
Lília Marques Gravina ◽  
...  
Keyword(s):  
Grain Yield ◽  
Seed Weight ◽  
Block Design ◽  
Multiple Traits ◽  
R Software ◽  
Randomized Block Design ◽  
Productive Potential ◽  
Pod Length ◽  
100 Seed Weight ◽  
Selection Of

Cowpea is an African legume that was introduced to Brazil by Portuguese settlers in the mid-16th century. The productive potential of this crop may fluctuate depending on its environment. The objective of the present study was to select cowpea lines with high grain yield coupled with other traits of agronomic interest, such as good adaptability and stability, by the GYT biplot methodology. Twelve lines were evaluated in the years 2016 and 2017 in the municipality of Bom Jesus de Itabapoana, Brazil, in a randomized-block design with four replicates and two cultivars, which were used as controls. The following variables were evaluated: number of days to flowering, final stand, crop value, lodging, pod weight, pod length, seed number per pod, seed weight per pod, 100-seed weight (100SW), and grain yield. Analysis of variance was performed and GYT biplots were constructed using R software and the ggplot2 package. The GYT biplot graph analysis allowed for the selection of superior cowpea genotypes. In the combinations of traits observed, lines L1, L3, L5, L6, L8, and L9 were superior and cultivar Imponente stood out as one of the controls. The yield combinations GY*CV, GY*NDF, GY*LDG, GY*CV, GY*PW, GY*SNP and GY*P100G were positively correlated with each other but showed negative to highly negative correlations with GY*SWP and GY*TS.

scholarly journals Water-retaining polymer as a soil conditioner in cowpea under water stress

2019 ◽  
Vol 9 (4) ◽  
pp. 680-686
Author(s):  
Marilia Barcelos Souza Lopes ◽  
Helio Bandeira Barros ◽  
Aloísio Freitas Chagas Júnior ◽  
Manoel Mota dos Santos ◽  
Niléia Cristina da Silva ◽  
...  
Keyword(s):  
Regression Analysis ◽  
Water Stress ◽  
Grain Yield ◽  
Computer System ◽  
Analysis Of Variance ◽  
Block Design ◽  
Soil Conditioner ◽  
The North ◽  
Randomized Block Design ◽  
Pod Length

Cowpea is no longer a family-oriented crop. Today it is cultivated by medium and large farmers in the North and Northeast, due to their adaptation to edaphoclimatic conditions. The objective of this work was to evaluate the efficiency of hydrogel utilization in the retention and availability of water for the development and production of Cowpea beans when subjected to water stress. The experiment was conducted in a randomized block design with four replications in a 5 x 2 factorial scheme, with five concentrations (0, 5, 10, 15 and 20 kg ha-1) and two sources of hydrogels (Hydroplan-EB HyC and Polim-Agri). The cowpea cultivar used was BRS Vinager. The following characteristics were evaluated: number of pods per plant; Number of grains per pod; Pod length: one hundred grain mass and grain yield. The data were submitted to analysis of variance, with the application of the test F. Regression analysis was performed with the help of the SISVAR computer system. The use of hydrogel was an alternative to reduce losses resulting from the action of water stress; the concentrations of hydrogels between 15 and 18 kg ha-1 resulted in higher number of pods per plant, number of grains per pod, the mass of one hundred grains and yields of grains.

scholarly journals YIELD COMPONENTS AND PRODUCTIVITY OF MAIZE AS A FUNCTION OF PREDECESSOR CROP

2020 ◽  
Vol 19 ◽  
pp. 10
Author(s):  
MARÍA EMILIA BRUSQUETTI GONZÁLEZ ◽  
IZAIAS RODRIGUES DA SILVA JUNIOR ◽  
LUIZ CARLOS FERREIRA DE SOUZA
Keyword(s):  
Grain Yield ◽  
Growth And Development ◽  
Dry Matter ◽  
Pennisetum Glaucum ◽  
Block Design ◽  
Maize Crop ◽  
Mato Grosso ◽  
Randomized Block Design ◽  
Sunn Hemp ◽  
Long Term Experiment

Succession crops in no-tillage system can improve the soil attributes, thus favoring the growth and development of maize (Zea mays L.) and contributing to grain yield increment. The objective of this work was to verify the effect of succession crops on growth and development of maize planted in the summer and the influence on grain yield. For the study, a long-term experiment was implemented, beginning in September 2009, in dystroferric Red Latosol, on the Experimental Farm of the School of Agricultural Sciences of the Federal University of Grande Dourados (UFGD), located in the municipality of Dourados, Mato Grosso do Sul state. This article presents data collected from the 2017/2018 crop season. Randomized block design was used, with ten treatments and four replications. The treatments consisted of the crops preceding maize, such as millet (Pennisetum glaucum L.), oilseed rape (Brassica napus), oat (Avena sativa), safflower (Carthamus tinctorious), niger (Guizothia abyssinica), vetch (Vicia sativa), sunn hemp (Crotalaria juncea), and forage radish (Raphanus sativus). The predecessor crops positively influence dry matter mass of the aerial part of the plant, dry matter mass of 1000 grains, and productivity of the summer maize crop planted through the remains of straw (residues) of millet, oat, niger, sunn hemp, vetch and forage radish.

scholarly journals Sorgo en doble hilera versus surco sencillo en el noreste de México.

2016 ◽  
Vol 5 ◽  
pp. 104
Author(s):  
Raúl Rodríguez ◽  
Heriberto Torres ◽  
Héctor Williams ◽  
Noé Montes
Keyword(s):  
Population Density ◽  
Grain Yield ◽  
Plant Height ◽  
Block Design ◽  
The Other ◽  
Plant Mortality ◽  
Grain Number ◽  
Double Row ◽  
Single Row ◽  
Randomized Block Design

An experiment was conducted to compare the traditional sorghum sowing method (single row) with double row method in the spring of 1992 under irrigation conditions in Rio Bravo, Tamaulipas, Mexico. A Complete Randomized Block design with a 2 x 5 factorial distribution was used with six replications; where the factors were: sowing method (doble and single row) and population density (187, 256, 342, 375 and 435 thousand plants/hectare). The hybrid Pioneer 8244 was used and planted at 0.80 m between rows. The parameters evaluated were plant height, panicle excertion, panic1e lenght and weight, grain number and moisture, weight of a thousand grains, grain yield and plant mortality. Mean separations were run using the Duncan's test. The grain yield and number per panicle were higher in double row method than in single row by 7.5 and 18.9 %, respectively; while grain weight and plant height showed higher values in single row than doble row. On the other hand, the weight and panic1e length decreased when population density increased in both methods, while panic1e excertion and plant mortality increased.

scholarly journals População de plantas e desempenho produtivo de híbridos de milho oriundos de sementes com diferentes níveis de vigor

2016 ◽  
Vol 11 (2) ◽  
pp. 01
Author(s):  
Danilo Henrique Rodrigues da Silva ◽  
Géri Eduardo Meneghello ◽  
Sandro de Oliveira ◽  
Jerffeson Araújo Cavalcante ◽  
Lilian Madruga Tunes
Keyword(s):  
Block Design ◽  
Plant Population ◽  
Seed Vigor ◽  
Corn Hybrids ◽  
Yield Performance ◽  
Mato Grosso ◽  
Maize Hybrids ◽  
Randomized Block Design ◽  
Final Yield ◽  
And Performance

<p>As relações entre o vigor e desempenho de sementes são bastante contraditórias. Para espécies produtoras de grãos e hortaliças, os efeitos do vigor da semente podem ser expressos na emergência, no crescimento inicial, e no desenvolvimento, com impactos na produtividade final. No entanto, o dimensionamento desta persistência pode não ser evidente em todas as fases, sendo mais comum na emergência. Assim, objetivou-se avaliar os efeitos do vigor de sementes de milho no estabelecimento e desempenho produtivo dos híbridos 502 e 810. O experimento foi conduzido na Fazenda Rancho Alegre, em Itiquira, Mato Grosso (520 m de altitude). Empregou-se o delineamento em blocos ao acaso, em esquema fatorial 2×3, sendo dois híbridos de milho (BM502 e BM810) e três níveis de vigor (alto, médio e baixo), com quatro repetições. A semeadura foi realizada com semeadora manual a 2,5 cm de profundidade e com espaçamento de 0,5 metros entre linhas. As parcelas foram constituídas por 6 linhas de 5 m, sendo que apenas 2 linhas foram utilizadas como área útil para as avaliações. Foi avaliado a população de plantas/ha, produtividade de grãos/ha e produção por planta. O nível de vigor das sementes de híbridos de milho BM502 e BM810 não interfere no estabelecimento do estante inicial e na produção de grãos por planta. O aumento do vigor ocasiona aumento na produtividade dos híbridos de milho.</p><p align="center"><strong><em>Plant population and yield performance of corn hybrids derived from seeds with different levels of force</em></strong></p><p><strong>Abstract</strong><strong>: </strong>Abstract: The relationship between seed vigor and performance are quite contradictory. For species that produce grains and vegetables, the effects of seed vigor can be expressed in the emergence, early growth, and development, with impacts on final yield. It aimed to evaluate the effects of the vigor of corn seeds in the establishment and yield performance of the hybrid 502 and 810. The experiment was conducted in Rancho Alegre Farmin Itiquira, Mato Grosso (520 m altitude). We used the design in a randomized block design in a 2 × 3 factorial design, with two maize (BM502 and BM810) and three force levels (high, medium and low), with four replications. The seeding was done with manual seeder 2,5 cm deep and spaced 0,5 meters between rows. The plots were 6 rows of 5 m, with only two lines were used as useful for evaluations area. Plant population há-1, seed yield / ha and yield per plant was evaluated. The level of seed vigor of maize hybrids BM502 and BM810 does not interfere in the establishment of the initial stand and grain yield per plant. The increase in force results in an increase in the productivity of maize hybrids.</p>

scholarly journals Assessment of Plant Population and Time of Introduction of Maizeon the Performance of Garden egg - Maize Intercrop

2020 ◽  
Vol 8 (7) ◽  
pp. 1479-1484
Author(s):  
Olabisi Awoniyi ◽  
Felix Takim ◽  
Gbadebo Olaoye ◽  
Patience Olorunmaiye ◽  
Ade Isaac Afe
Keyword(s):  
Population Density ◽  
Grain Yield ◽  
Analysis Of Variance ◽  
Yield Components ◽  
Block Design ◽  
Field Trials ◽  
Dry Season ◽  
Plant Population ◽  
Yield And Yield Components ◽  
Dry Seasons

The field trials were conducted during the rainy and dry seasons of 2014 and 2015 to investigate the influence of population density and time of introduction of the component maize on the performance of garden egg/maize intercrop in Nigeria. The trial was laid as a randomised complete block design in a split-plot arrangement with 3 replications. The main plots were time of introduction of maize [2weeks before transplanting (WBT), same time with transplanting (STT) and 2 weeks after transplanting (WAT)] while 9 plant population ratios were the sub plots (100M: 100G, 100M: 75G, 100M: 50G, 100M: 25G 100M: 0, 0:100G, 25M: 100G, 50M: 100G, 75M: 100G). Intercropping system was evaluated using competitive indices and data collected on yield and yield components of both crops were subjected to analysis of variance. Maize sown STT garden egg had significantly high grain yield (3.70 t/ha) while the highest garden egg fruit yields of 40.96 t/ha was obtained when maize was introduced 2 WAT garden egg. This study recommends that, 50-75% maize should be introduced 2WAT of 100% garden egg during the dry season where irrigation facilities are available for optimal crops yields and minimal intercrop losses.

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