Influencia de dosis de polvo de basalto sobre cultivares de soya

Abstract

The incorporation of basalt powder as a way to promote soil recovery is a current challenge. The work was oriented to evaluate the development of soybean cultivars (SC) after the superficial application of different doses of basalt powder (DBP) in the soil. The experimental delineation used was that of randomized complete blocks, with 3 × 4 factorial arrangement, with three replicas. The treatments were the combination of three SC and four DBP (0, 1, 3 and 5 t ha-1). In the harvest the height of the plants (HP), insertion of the first pod (IFP), number of pods per plant (NPP), number of grains per pod (NGP), mass of one thousand grains (MTG) and yield were determined. of experimental plots (REND). With the harvested grains, they were classified by size in seven sieves of different diameter (Ø7.5 - Ø4.5 mm) and the percentage and relative productivity of grains retained in mesh (RPGRM) were calculated. The results pointed to significant interactions (SC x DBP) (P<0.01) for the variables height of the plants, number of pods per plant and percentage of grains retained in the sieve Ø6.5; with variable responses between the cultivars and the doses used for these three variables. The doses of basalt powder did not influence the performance of soybean cultivars, but contributed to obtaining a better seed size and thus improved the quality of the seeds obtained.

Physiological quality of soybean seeds in response to doses of basalt powder

“…The search for new sources of alternative fertilizers that partly eliminate dependence on chemical fertilizers has been one of the objectives of numerous researches in Brazil Theodoro et al, 2012;Hanisch et al, 2013;Ramos et al, 2014Ramos et al, , 2015Lopes et al, 2014;Nunes et al, 2014;Manning & Theodoro, 2018;Aguilera et al, 2020aAguilera et al, , 2020bMedeiros et al, 2020;Ratke et al, 2020 ) and in the world (Straaten, 2006;Anda et al, 2009;Ramezanian et al, 2013;Beerling et al, 2018), in which the use of rock dust (basalt, amethyst, among others) has manifested itself as a viable alternative.…”

“…According to the Köppen classification, the climate of the region is the tropical rainy (Aw) type, with wet summers and dry winters. The main climate characteristics during field experiments described by Aguilera et al (2020b).…”

“…The three soybean cultivars used were: Brasmax Foco IPRO -indeterminate growth habit, an average cycle of 109 days, maturity group 7.2; Brasmax Desafio IPRO -indeterminate growth habit, 113 days in between, maturity group 7.4 and Brasmax Bônus IPRO -indeterminate growth habit, the average cycle of 121 days, maturity group 7.9. The basalt powder was applied superficially one week before the experiment's installation, being distributed in the experimental plots previously identified, and the basalt powder chemical characteristics were described by Aguilera et al (2020b).…”

“…The base fertilization was broadcast pre-plant consisted of 150 kg P2O5 ha -1 , whose source was mono ammonium phosphate (11% ammonia N and 52% P2O5). Throughout the crop cycle, the control of plants, pests, and harmful diseases carried out with chemicals on demand (Aguilera et al, 2020b).…”

“…In Brazil, the effect of using ground rock powder is efficient in the development of Theobroma cacao L. (Anda et al, 2009); Myrciaria dubia ; Fragaria ananassa Duch (Camargo et al, 2012); Triticum aestivum L. (Ramezanian et al, 2013); Solanum tuberosum (Santos et al, 2014); Phaseolus vulgaris L. (Bertoldo et al, 2015); Zea mays L. (Aguilera et al, 2020a) and soybean (Aguilera et al, 2020b). However, the effects on Development, v. 9, n. 8, e840986314, 2020 (CC BY 4.0) | ISSN 2525-3409 | DOI: http://dx.doi.org/10.33448/rsd-v9i8.6314 the physiological quality of seeds produced with rock dust under field conditions were not observed.…”