ANÁLISE DE CRESCIMENTO DA MAMONEIRA BRS ENERGIA EM FUNÇÃO DA DENSIDADE POPULACIONAL
| Autor: | GIBRAN DA SILVA ALVES, FRANCILENE DE LIMA TARTAGLIA, MATHEUS MARTINS FERREIRA, AMAURI NELSON BEUTLER, ELIZANGELA CABRAL DOS SANTOS |
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| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Revista Caatinga, Vol 28, Iss 1, Pp 167-175 (2015) |
| Druh dokumentu: | article |
| ISSN: | 0100-316X 1983-2125 |
| Popis: | The population density is one of the factors that affect the final yield of crops, being easily ma-nipulated by man. The objective was to evaluate the growth of castor bean plants cv BRS Energia in dense pop-ulations through primary data and non-destructive analysis of growth and identify which period greater vegeta-tive growth occurs. We adopted a randomized block design with five treatments and four replications, totaling 20 experimental units. Each experimental unit contained 4 m wide and 6 m in length, representing 24 m². Treatments involving five populations of plants 10.000; 16.666; 25.000; 50.000; 100.000 plants ha-1, with a spacing of 1 m between rows and 1; 0.6; 0.4; 0.2 and 0.1 m between plants, respectively. It was determined: stem diameter, plant height, leaf area, leaf area index and rates absolute and relative leaf growth, of stem diam-eter, of plant height and of fresh biomass epigeal. The castor bean BRS Energia has the highest rates of vegeta-tive increase between 15 and 45 days after emergence. Therefore, it is of great importance, in this period, pro-vide the plant water and nutrient conditions appropriate so that does not compromise on plant development. |
| Databáze: | Directory of Open Access Journals |
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