Acúmulo de nutrientes e crescimento da pimenta-de-cheiro em função de doses de calcário.

Abstract

Resumo -A acidez dos solos tropicais pode afetar o desenvolvimento das espécies agronômicas, tornando necessária a prática da calagem. Entretanto, as culturas apresentam diferentes respostas à aplicação de calcário. Objetivou-se com o presente estudo avaliar o efeito de diferentes doses de calcário no crescimento e acúmulo de nutrientes na parte aérea de pimenta-decheiro, Capsicum chinense Jacq. cultivada num Latossolo Amarelo distrófico típico, textura argilosa, em casa de vegetação. O delineamento experimental utilizado foi o inteiramente casualizado, com seis tratamentos (0; 250; 500; 750; 1500 e 2000 kg ha -1 de calcário dolomítico) e quatro repetições, sendo cada unidade experimental constituída por 3 plantas por vaso. Aos 60 dias após o transplantio, foram avaliadas a altura, diâmetro do coleto, matéria seca da parte aérea, matéria seca das raízes, o conteúdo e a eficiência nutricional de N, P, K, Ca, Mg, Zn, Cu, Fe e Mn das plantas. Verificou-se que a adição de doses crescentes de calcário aumentou linearmente as características biológicas da pimenta-de-cheiro, principalmente a produção de massa seca. As concentrações dos nutrientes no tecido vegetal aumentaram de forma linear, com exceção do Fe. Palavras-chave -Calagem. Capsicum chinense Jacq. Eficiência nutricional.Abstract -The acidity of tropical soils can affect development of agronomic species, making necessary the liming, however, crops show different responses to lime application. This study aimed to evaluate the effect of lime levels on growth and nutrients content in aerial part of habanero pepper (Capsicum chinense Jacq.), cultivated on a Yellow Latosol Dystrophic typic, clayey texture, in a greenhouse. The experimental design consisted of randomized design, with six doses of lime (0; 250; 500; 750; 1500; 2000 kg ha -1 ), four replications and three plants per pot in each plot. Up to sixty days after transplanting, were evaluated height, diameter, shoot dry matter, root dry matter, content and nutritional efficiency of N, P, K, Ca, Mg, Zn, Cu, Fe and Mn. Was observed that the addition of increasing doses of lime led to linear gains in the biological characteristics of habanero pepper, mainly in dry matter production. Furthermore, higher concentrations of nutrients in shoot dry matter were found in treatments that received higher doses of amendment, except the Fe.

Do Exogenous Application of Thiamine Mitigates Low Soil Base Saturation Effects on Bell Pepper Plants?

“…For the genus Capsicum, the gains in development when BS is increased is due to the occurrence of greater absorption of nutrients and thus having greater accumulation in the shoot, which is a result of a more favorable pH for the plant, influencing root development, also responsible for greater fruit production. For the number of fruits and the accumulation of phytomass in the roots and shoot, BS close to 60% significantly increases (Cardoso et al, 2014). In addition to the negative interactions of nutrient absorption and low soil pH, the presence of higher levels of Al when soil pH is not corrected can also be highlighted.…”

“…Concerning the length and width of the leaves, there was no significant statistical variation; however, the treatment of 20% of BS limited the growth in length and 80% for the width. Therefore, the Capsicum genus was considered demanding concerning chemical characteristics of the soil (Ribeiro et al, 2020), which attributes such results to the improvement of soil characteristics caused by the application of limestone (Cardoso et al, 2014).…”

Soil chemical properties under a no-tillage system: Forage grass seeding modes of gender urochloa intercropped with maize

“…These results can be explained by the low competition occurring between maize and forage grasses in the vegetative stage V4 of maize, together with supplementary surface fertilization and a higher pH value, where higher pH values contributed directly in the reduction of potential acidity levels (H + Al) and increased levels of Mg, SB and V (Strojaki et al, 2013). Also with respect to the pH, when it is increased, there is also an increased mineralization of organic matter, and this process is favored in soils of pH values between 5.0 and 6.0, freeing N, P and S, as well as macro and micronutrients in smaller amounts (Cardoso et al, 2014). For the detailing of pH (Figure 3), the Urochloa ruziziensis cv showed higher pH levels in the MFE mode differing from the others.…”

Effects of nitrogen fertilization and hydroretentor gel application in Capsicum spp. cultivation

“…In both cases, the values fit the quadratic regression with maximum points at 135 and 164 kg ha -1 N, respectively, with and without application. Cardoso et al (2014), while evaluating the application of limestone doses on the yellow lantern chili found a linear increase in the foliar N content.…”