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  • Open Access

    ARTICLE

    Herbicide combinations to control the weed seedbank in an upland cotton field

    Pereira JR1, AE Duarte2, JB Pitombeira3, MAP da Silva2, NE de M Beltrão1, LM Barros2

    Phyton-International Journal of Experimental Botany, Vol.82, pp. 275-279, 2013, DOI:10.32604/phyton.2013.82.275

    Abstract An experiment was conducted in dryland conditions of the Brazilian Northeast to determine the number of viable weed seeds (seedbank) in an upland cotton crop, and its distribution in the soil profile, before and after using various herbicide treatments. A randomized block design in a split-plot block scheme with 6 replications was used, where the main plots were constituted by a factorial (13 treatments and 2 sampling soil depths), and the subplots by 2 sampling dates. The seedbank was determined by germination of the recovered weed seeds obtained from different soil depths. The highest number More >

  • Open Access

    ARTICLE

    Growth analysis of three varieties of cotton (Gossypium hirsutum L.) in an arid region of Mexico

    Orozco-Vidal JA1, P Yescas-Coronado1, MA Segura-Castruita1, R Valdez-Cepeda2, E Martínez-Rubín de Celis1, JA Montemayor-Trejo1, M Fortis-Hernández1, P Preciado-Rangel1

    Phyton-International Journal of Experimental Botany, Vol.80, pp. 47-52, 2011, DOI:10.32604/phyton.2011.80.047

    Abstract The development of three cotton varieties was evaluated through the growth analysis technique. Study varieties were two of normal leaf (Cian Precoz and NuCotton 35B) and the other of okra leaf (Fiber Max 832). Vegetative and reproductive samplings effected at different days after planting (dap) allowed us to determine the (1) growth dynamics, (2) production efficiency and (3) the biomass distribution of the three cotton varieties. Seeding was conducted following the production system of narrow rows (0.76m, between rows; 0.20m between plants) to obtain a plant density of 65500 plants/ha. Varieties were distributed in a… More >

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