Safflower genotypes submitted to soil density levels

Abstract

It is essential to have knowledge of changes in soil structure, as a result of agricultural use and its relationship with crop development, especially those with potential for use in new regions, such as the cultivation of safflower (Carthamus tinctorius L.) in the Cerrado. In view of this dynamics, the objective was to evaluate the phytometric components of safflower genotypes submitted to levels of soil densities in Cerrado Oxisol. Ten safflower genotypes were then submitted to compaction (five densities: 1.0, 1, 2, 1.4, and 1.8 Mg m-3) in a completely randomized design with four replications under greenhouse conditions. The plots consisted of an overlap of three rings of polyvinylidene chloride of 0.01 m height each, and the treatments were applied in the intermediate layer. The phytometric components (plant height, number of leaves and stem diameter) and shoot dry mass of the crop were evaluated at 30, 60 and 90 days after sowing. There was no significant interaction between safflower genotypes and soil densities, with the effects being isolated for genotypes and/or densities when significant. For the phytometric characteristics evaluated, the genotypes PI250196, PI301049, PI305173, and PI305205 are more stable about the variations of soil density in comparison to the others. The phytometric components and dry mass of safflower shoot are impaired from the mean density of 1.2 Mg m-3.

Correction of soil compaction using wood ash in safflower crop

“…The plants present smaller and thicker roots when cultivated in denser soils close to 1.2 Mg m -3 . Bonfim-Silva et al (2018b) and Paludo et al (2018) evaluated safflower genotypes in different soil density levels. They verified that the cultivars show distinct levels of tolerance to bulk density, with a significant decrease in the volume and the root mass of the plants when they are cultivated in soil densities higher than 1.2 Mg m -3 .…”

Initial Development of Safflower Submitted to Irrigation Water Salinity Levels

“…Specifically, in the Brazilian Central West, in general, soybeans, corn, and cotton are grown in the harvest and/or the second crop, and in some regions sugar cane. Thus, research on the adaptability of other species as an alternative to cultivation in the region, such as wheat (Triticum aestivum) (Freitas et al, 2018) in the State of Goiás, Mato Grosso and Mato Grosso do Sul, and the safflower (Carthamus tinctorius L.) in the State of Mato Grosso (Anicésio et al, 2018;Bonfim-Silva et al, 2018).…”