ANÁLISE DE CRESCIMENTO DA MAMONEIRA BRS ENERGIA EM FUNÇÃO DA DENSIDADE POPULACIONAL

• Published in: Caatinga 2015-01, Vol.28 (1), p.167-175
• Main Authors: GIBRAN DA SILVA ALVES, FRANCILENE DE LIMA TARTAGLIA, MATHEUS MARTINS FERREIRA, AMAURI NELSON BEUTLER, ELIZANGELA CABRAL DOS SANTOS
• Format: Article
• Language: English
• ISSN: 0100-316X; 1983-2125

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.