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| Registros recuperados: 10 | |
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| Lúcio,Alessandro Dal’Col; Lambrecht,Darlei M; Sari,Bruno G; Krysczun,Dionatan K; Ubessi,Cassiane. |
| ABSTRACT In order to be considered highly reliable (showing very accurate results), an experiment needs to be very well planned. Defining the experimental plot size and number of replicates is fundamental to control the experimental error at the beginning of the experiment. The aim of this study was to estimate the plot size and the number of replicates sufficient to perform experiments with Cucumis sativus. A uniformity trial was installed in the first week of January 2017. The spacing used was 0.3 m between plants and 1 m between rows, resulting in 12 plants in each of the 12 cultivation rows and each basic experimental unit was composed of one plant. The variables observed in 18 harvests were average fruit mass (MMF, in g), average fruit length (CMF, in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cucumis sativus; Experimental accuracy; Number of replicates; Plot size; Experimental variability. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000200112 |
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| Feijó,Sandra; Storck,Lindolfo; Lúcio,Alessandro Dal'Col; Lopes,Sidinei José; Garcia,Danton C; Carpes,Ricardo H. |
| The objectives of this work were to assess zucchini heterogeneity index and fruit weight at different harvest frequencies for plants grown on a protected environment; to estimate the optimum plot size; and to determine the least significant difference among treatments, varying plot size and replication number. Plants of cultivar Caserta were grown in a plastic greenhouse, using spaces of 0.80 x 1.00 among plants and lines, respectively. The following harvest frequencies were studied: fruits harvested daily, (1) at 10:00, (2) at 10:00 and 18:00, (3) at 8:00, 10:00, 12:00, 14:00, 16:00 and 18:00 h and; (4) fruits harvested every other day, at 18:00 h. Twenty-seven harvests were carried out, collecting fruits larger than 0.15 m. Plots were planned with 1, 2,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cucurbita pepo; Experimental accuracy; Plot size; Harvest frequency. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362008000100007 |
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| DE CARVALHO,FRANK W.A.; NUNES,GLAUBER H.S.; BEZERRA NETO,FRANCISCO; BARROS JÚNIOR,AURÉLIO P.; DE LIMA,JAILMA S.S.; KHAN,AHMAD S.; DA SILVA,JOSÉ R.; MOREIRA,JOSERLAN N.. |
| Abstract The production of vegetable crops has been characterized as a highly intensive activity in the use of soil, water, inputs and labor in semi-arid regions, being practiced mostly by small family farmers as a way of subsistence, or in the small-scale commercialization of surplus production. Among the agricultural practices that have been successfully used by vegetable producers are intercrop systems that, when implemented with adequate management, present gains in productivity, nutritional, economic, and environmental value. The aim of this study was to estimate the optimal plot sizes of plantings of carrot (Daucus carota L.) intercropped with arugula (Eruca sativa L.) in bi-cultivation in three spatial arrangements, as well as to determine... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Daucus carota; Eruca sativa; Plot size; Intercrop; Bio-agroeconomic index. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703493 |
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| Magnusson,William E.; Lima,Albertina P.; Luizão,Regina; Luizão,Flávio; Costa,Flávia R. C.; Castilho,Carolina Volkmer de; Kinupp,V. F.. |
| Our objectives were to develop a method that would be appropriate for long-term ecological studies, but that would permit rapid surveys to evaluate biotic complementarity and land-use planning in Amazonia. The Amazon basin covers about 7 million km². Therefore, even a sparse coverage, with one sample site per 10.000 km², would require about 700 sampling sites. Financial considerations limit the number of sites and investment at each site, but incomplete coverage makes evaluation of biotic complementarity difficult or impossible (Reddy & Dávalos 2003). Our next challenge is to install similar systems throughout Amazonia. The cost, based on modification of Al Gentry's original design is moderate (less than US$ 50.000 per site if it is not necessary... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tropical forest; Inventory; Plot size; Plot shape; Biotic complementarity; Survey; Land-use planning. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032005000300002 |
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| Registros recuperados: 10 | |
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