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| Registros recuperados: 48 | |
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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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| 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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| 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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| ,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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| 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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| 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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| Gava,Ricardo; Anselmo,Jefferson L.; Neale,Christopher M. U.; Frizzone,José A.; Leal,Aguinaldo J. F.. |
| ABSTRACT Planting density can influence the competitiveness among plants mainly by water, nutrients and solar radiation, directly affecting yield. The purpose of this study was to evaluate the productivity of different soybean cultivars at different planting populations under irrigated and rainfed conditions. The experiment was conducted during the 2014/15 growing season, under center pivot irrigation in Chapadão do Sul – MS, Brazil. The experimental design was randomized complete block design with split-plot, as follows: Irrigated and Rainfed (plots) x Six cultivars (subplots) x Three Plant Populations (sub-subplots) with 4 replications. The irrigation management was realized by Penman-Monteith-FAO method. The cultivars used were: NA 5909 RR, DM 5958... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plant density; Irrigated Soybean; Deficit irrigation; Soybean Yield. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000300441 |
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| Azadbakht, Mohsen; Ghajarjazi, Ehsan; Barzanooni, Esmat; Pourbagher, Roghayeh; Tajari, Neda. |
| Three irrigation regimes, 6, 12 and 18 days, the distance between seeds in four levels: 5,10, 15 and 20 cm (density, respectively, 80, 40, 27 and 20 plants per m2) and a row spacing of 25 cm was considered that was tested in a randomized complete block design with three replications. The results showed that the effect of irrigation on cutting force, shear strength and energy per unit area was meaningful at 5% level and the effect of plant density on cutting force was meaningful at 1% level, but was not meaningful on shear strength. Also showed interaction between irrigation and plant density on cutting force, shear strength and energy per unit area is not meaningful. It was observed that the effect of irrigation and plant density on the length, diameter... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Azivash; Plant density; Shear strength; Irrigation regime. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3340 |
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| Registros recuperados: 48 | |
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