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| Registros recuperados: 71 | |
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| MARCHÃO, R. L.; BRASIL, E. M.. |
| ABSTRACT: The increment on plant density in narrow row spacing resulted in a greater absorption of photosynthetic active radiation particularly in tropical environments as in the Cerrado Biome. This review aims to analyze the main factors that affect plant arrangement definition in maize, the changes in plant arrangement recommendation and, the modification in plant traits that favored such changes. The choice of plant arrangement in the field must take into account cultivar, grower objective, input availability, planting date and disponible farmer structure. The association between better crop management and highly productive hybrids favored the increase in plant density and reduction in row spacing. Most of research results showed that grain yield was... |
| Tipo: Folhetos |
Palavras-chave: Maize; Densidade de Plantio; Espaçamento; Milho; Semeadura; Zea Mays; Plant density; Row spacing. |
| Ano: 2007 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/570882 |
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| CARDOSO, M. J.; BASTOS, E. A.; ANDRADE JUNIOR, A. S. de; ATHAYDE SOBRINHO, C.; MELO, F. de B.. |
| O trabalho teve como objetivo avaliar a produtividade de espiga verde de milho relacionada à densidade de plantio. Dois experimentos contíguos foram conduzidos na área experimental da Embrapa Meio-Norte, localizada no município de Teresina, PI, no período de fevereiro a maio de 2018. O delineamento experimental utilizado foi em blocos ao acaso com quatro repetições. Em um dos experimentos, foi utilizado 0,50 m entre fileiras e no outro, 0,80 m, com cinco densidades de plantio (2; 4; 6; 8; e 10 plantas m-2). Utilizouse o híbrido triplo de milho BRS 3046 da Embrapa. As características agronômicas avaliadas foram número de espiga verde por área, comprimento e diâmetro de espigas verdes com e sem palha, peso de espiga verde, índice de espiga e produtividade de... |
| Tipo: Folhetos |
Palavras-chave: Milho Verde; Densidade de Plantio; Zea Mays; Planting; Plant density; Corn. |
| Ano: 2021 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1137280 |
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| GUERRA, A. F.; ROCHA, O. C.; RODRIGUES, G. C.; SANZONOWICZ, C.; MERA, A. C.; CORDEIRO, A.. |
| RESUMO: O objetivo deste trabalho foi definir os melhores espaçamentos entre linhas de plantas de três cultivares de café arábica, Iapar 59, Acaiá Cerrado MG 1474 e Topázio MG 1190, submetidas a cinco regimes hídricos, buscando tornar eficientes os sistemas, manual e mecanizado, de manejo da cafeicultura no Cerrado. A cultivar Iapar 59 foi plantada com o espaçamento de 0,5 m entre plantas, e as variedades Acaiá Cerrado e Topázio foram implantadas no espaçamento de 0,60 m entre plantas na linha. O espaçamento entre linhas também variou conforme a variedade. A cultivar Iapar 59 foi implantada nos espaçamentos entre linhas de 2,20 m, 2,80 m e 3,80 m. As variedades Topázio e Acaiá Cerrado foram plantadas nos espaçamentos de 2,40 m, 3,40 m e 4,00 m. Semelhante... |
| Tipo: Folhetos |
Palavras-chave: Coffee; Spacing; Productivity; Coffea Arábica; Café; Densidade de Plantio; Espaçamento; Irrigação; Manejo de Água; Produtividade; Irrigation; Plant density; Water management. |
| Ano: 2007 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/571950 |
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| 秋本, 正博; 中田, 翔子; 熊田, 総佳; 逵本, 秀久; 小林, 規人; 平等, 聡; 田中, 一郎. |
| 十勝地方におけるラッカセイ生産の可能性を模索するため、帯広畜産大学実験圃場でラッカセイ品種「千葉半立」、「ナカテユタカ」、および「おおまさり」の栽培を行った。栽植方法（直播、あるいは移植）、および栽植密度（標準植：5.1 株/ ㎡、あるいは密植：7.7 株/ ㎡）の組合せによる4 試験区を設け、2016 年5 月23 日にそれぞれの品種の栽培を開始した。茎葉の黄変期に収穫を行い、収量構成要素や子実収量の評価を行った。千葉半立とナカテユタカでは、子実収量に対する栽植方法と栽植密度の効果が認められた。両品種とも移植を行った試験区で直播を行った試験区に比べ収量が高かった。これは、移植を行うことで単位面積当たりの稔実粒数が増加することに起因する。また、両品種とも密植を行った試験区で標準植を行った試験区に比べ収量が高かった。千葉半立は半立ち性、ナカテユタカは立性の草型をもつため光競合を起こしにくく、十勝地方で栽培する場合には都府県の慣行法よりも栽植密度を高めることで土地利用効率が高まり、子実収量が改善されると考えられる。おおまさりでは、子実収量に対して栽植方法の効果のみが認められた。移植を行うことで直播を行った場合に比べ総稔実粒数や1000 粒重が高まり、子実収量が増加した。一方、おおまさりでは子実収量に対する栽植密度の効果が認められなかった。おおまさりは伏性の草型を持つため光競合が起こりやすく、十勝地方においても密植条件下では密度障害が生じ増収につながらないと考えられる。千葉半立とナカテユタカでは、移植・密植の処理組合せによる試験区で、おおまさりでは、移植・標準植、および移植・密植の処理組合せによる試験区でそれぞれ最も子実収量が高く、いずれも子実収量の全国平均（180g/... |
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Palavras-chave: ラッカセイ; 直播; 移植; 栽植密度; 十勝地方; Groundnut; Direct seeding; Transplanting; Plant density; Tokachi region. |
| Ano: 2017 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4557 |
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| Balbinot Junior,Alvadi Antonio; Oliveira,Maria Cristina Neves de; Franchini,Julio Cezar; Debiasi,Henrique; Zucareli,Claudemir; Ferreira,André Sampaio; Werner,Flavia. |
| Abstract: The objective of this work was to evaluate how branch and stem variables contribute to grain yield in individual soybean (Glycine max) plants, cultivated at different planting densities, in a modern cultivar with indeterminate growth type. A field experiment was carried out during the 2013/2014 and 2014/2015 crop seasons, in a randomized complete block design with 12 replicates, using the cultivar NK7059 RR at four planting densities: 135, 235, 315, and 440 thousand plants per hectare. Grain yield per plant was evaluated and represented phenotypic plasticity, while the number of branches per plant, percentage of grain production in branches, and separate yield components from branches and stems were considered as the independent variables. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Plant density; Principal component analysis; Stepwise regression; Yield components. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000901038 |
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| Rossato Junior,José Antonio de Souza; Cazetta,Disnei Amélio; Barbosa,José Carlos; Fornasieri Filho,Domingos. |
| The objective of this work was to evaluate the agronomic traits and the popping expansion index of three Brazilian popcorn cultivars under different row spacings and plant populations. The trials were performed during two crop seasons, under field conditions. The experimental design used was a randomized complete block, in a split-split plot, with 27 treatments and four replicates. Treatments were represented in a triple factorial arrangement: three row spacings (0.40, 0.60, and 0.80 m), three plant populations (40,000, 60,000, and 80,000 plants per hectare), and three popcorn cultivars (IAC-TC 01, IAC 12, and Zelia). The increase in plant population causes a reduction in the number of grains per ear, lower prolificacy, and grain weight loss. Cultivar... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Plant density; Popping expansion index; Spatial arrangement. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013001200002 |
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| ,UMM-E-KULSOOM; KHAN,M.A.; ALI,H.H.; ALI,L.; RIZWAN,M.S.; MAHMOOD,A.; RAZA,A.; JAVAID,M.M.. |
| ABSTRACT: Crop-weed competition and interactions are the focus of many researchers to make the weed management decision accurate and economical. Therefore, field studies were conducted in two consecutive years (2012-13 and 2013-14) at two different locations viz Peshawar (34.0167o N, 71.5833o E) and Chitral (35o50’46" N, 71o47’9" E) of Khyber Pakhtunkhwa (KPK) province, Pakistan. The aim of the studies was to determine the competitive ability of wild oat (Avena fatua L.) with wheat (Triticum aestivum L.) at two ecologically different locations and the possible effects on quantity and quality of wheat grains. In field studies, the experiment were laid out in randomized complete block design (additive design) with three replications in which the seed rate of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Weed-crop competition; Wild oat; Plant density; Suppression; Yield losses. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100241 |
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| Ferreira,André S.; Balbinot Junior,Alvadi A.; Werner,Flávia; Franchini,Júlio C.; Zucareli,Claudemir. |
| ABSTRACT Most studies that found soybean high phenotypic plasticity under different seeding rates adopted the same fertilization levels used for the recommended seeding rates. Therefore, the interaction between these factors is little known. This study aims to assess the interaction between seeding rate and levels of phosphorus and potassium fertilization on soybean growth, grain yield and contents of protein and oil in the grains. The experiment was carried out under a randomized complete block design, in a split-plot scheme, with six replicates. Four seeding rates (150, 300, 440 and 560 thousand viable seeds ha-1) were used in the plots, and two levels of phosphorus and potassium fertilizer were applied in the subplots to meet the export of 3 and 6 t... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max (L.) Merrill; Plant spatial arrangement; Fertilization; Plant density. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000300151 |
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| Krüger,Cleusa A. M. B.; Medeiros,Sandro L. P.; Silva,José A. G. da; Dalmago,Genei A.; Valentini,Ana P. F.; Wagner,Juliano F.. |
| ABSTRACT The objective of this study was to identify the plant arrangement that allows greater grain yield with adaptability and stability of rapeseed hybrids. The experiments were conducted in randomized block design with four replicates and the 12 treatments consisted of combination of inter-row spacings (0.20, 0.40, and 0.60 m) and plant densities (20, 40, 60 and 80 plants m-2). The hybrids Hyola 432 (early cycle) and Hyola 61 (medium cycle) were cultivated in three growing seasons (2008, 2009 and 2010). Grain yield was evaluated based on the parameters adaptability and stability according to the models of Wricke and Eberhart & Russell. The plant arrangement for obtaining higher grain yield depends on the cultivated genotype. Higher grain yield was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica napus L.; Inter-row spacing; Plant density; Grain yield. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000100036 |
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| Bezerra,Antônio Aécio de Carvalho; Neves,Adão Cabral das; Rocha,Maurisrael de Moura; Brito,Lucélia de Cássia Rodrigues de. |
| ABSTRACT The aim of this study was to evaluate morpho-physiological and productive characteristics in four semi-erect cultivars of the cowpea under five plant populations. The experiment was conducted in the experimental area of Embrapa Meio-Norte in Teresina in the State of Piauí, Brazil (PI). The experimental design was of randomised complete blocks with four replications, in a 4 x 5 factorial scheme, for evaluating four cultivars (BRS Guariba, BRS Novaera, BRS Potengi and BRS Tumucumaque) and five plant populations (105, 2x105, 3x105, 4x105 and 5x105 plants ha-1). There were significant differences between cultivars for primary branch length (PBL), number of lateral branches (NLB), 100-grain weight (HGW), and dry-grain yield (GY). The maximum PBL of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vigna unguiculata; Growth; Production; Plant density. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000400625 |
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| Costa Junior,Manoel de Jesus Nunes da; Bastos,Edson Alves; Cardoso,Milton José; Andrade Júnior,Aderson Soares de. |
| ABSTRACT The cowpea is of great socioeconomic importance in the North, Northeast and Mid-West of Brazil, and its irrigated farming has recently been on the increase in these regions. The aim of this study was to evaluate the agronomic performance of the cowpea 'BRS Tumucumaque' for different row spacings and irrigation depths, under the conditions of soil and climate of Teresina, in the State of Piauí. The experiment was carried out from August to November 2014, in a Yellow Argisol at the Experimental Area of Embrapa Meio-Norte in Teresina. The experimental design was of randomised blocks in subdivided lots, with four replications. The treatments consisted of five irrigation depths (40% ETo, 70% ETo, 100% ETo, 130% ETo and 160% ETo) in the main plot, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vigna unguiculata; Grain yield; Irrigation management; Plant density; BRS Tumucumaque. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000500774 |
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| Registros recuperados: 71 | |
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