Qualidade de tubérculos de batata da cultivar 'Atlantic' afetada pela adubação fosfatada

Fernandes, Adalton Mazetti; Soratto, Rogério Peres; Evangelista, Regina Marta

doi:10.1590/0103-8478cr20141530

Cited by 3 publications

(2 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The culture is highly responsive and demanding for fertilization and receives high levels of macronutrients in order to guarantee high productivity (Fernandes et al, 2015). The efficient use of nutrients by the crop calls attention to the response of other elements such as micronutrients or beneficial elements.…”

Section: )mentioning

confidence: 99%

Foliar application of titanium on potato crop

et al. 2022

View full text Add to dashboard Cite

Although titanium (Ti) is not considered a nutrient, researches demonstrate that Ti leaf application can provide beneficial effects on plants growth. The objective of this study was to evaluate the influence of foliar applications of Ti levels on the metabolism, nutrient uptake and yield of potato crop, Agate cultivar. The experiment was conducted in a randomized complete block design with five treatments and four replications. The treatments were composed of 0, 10.2, 15.3, 20.4 and 22.9 g Ti ha-1, divided into three applications during the growth stage, tuberization stage and tuber filling stage. Foliar applications of Ti increase the chlorophyll content (Spad value) in the tuber filling stage. Ti levels do not interfere with N, Zn and Cu nutrient accumulation. Increasing Ti levels linearly reduce the Mn, lipid peroxidation (PL) and urease content and increase the activity of peroxidase (POD), nitrate reductase (ANR), catalase (CAT), proline and Fe content in the growth stage, with maximum level around 3 to 6 g Ti ha-1. In the tuberization stage, at high levels of Ti, there is an increase in urease activity and CAT while ANR has its lowest value. In the tuber filling stage, high Ti levels are related to high Fe, Mn, high ANR and superoxide dismutase (SOD) activity and low PL activity. The ideal level of titanium applied by leaf for greater yield of tubers is 11.3 g of Ti ha-1.

show abstract

Section: )mentioning

confidence: 99%

Foliar application of titanium on potato crop

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Porém, não se sabe se o fornecimento de P e K causa efeito semelhante na produção e qualidade das raízes de reserva dessa cultura. Em batata, que é uma cultura exigente em nutrientes, nos cultivos realizados em solos de baixa fertilidade o fornecimento de P pode aumentar o tamanho, o teor de amido e a produtividade de tubérculos (FERNANDES et al, 2015a, FERNANDES et al, 2015b, sem alterar significativamente a qualidade nutricional dos mesmos (FERNANDES et al, 2015b), enquanto o K promove aumentos significativos na produtividade, exercendo efeitos positivos sobre o tamanho e o teor de amido dos tubérculos (FERNANDES; SORATTO, 2012). Assim, considerando que a mandioquinha-salsa é uma cultura que absorve quantidades consideráveis de nutrientes do solo (MAGOLBO et al, 2015) e que o conhecimento sobre o efeito de níveis de adubação na produtividade e na qualidade das raízes de reserva ainda é incipiente, torna-se fundamental avaliar essas características, com o intuito de auxiliar no manejo da adubação dessa cultura.…”

Section: Introductionunclassified

Produtividade E Qualidade De Raízes Da Mandioquinha-Salsa Em Diferentes Níveis De Adubação NPK

Fernandes

Garcia²,

Leonel

et al. 2018

COLLOQ AGRARIAE

View full text Add to dashboard Cite

The storage roots of arracacha have high nutritional value, being rich in carbohydrates, minerals, vitamins A and C, and starch of high digestibility. However, in this crop one of the decisive factors for the production of roots with higher nutritional value is the balanced fertilization. The aim of this study was to evaluate the yield and nutritional quality of storage roots of arracacha, grown at increasing levels of NPK fertilization. The experiment was conducted in the randomized blocks design, with eight replications. The treatments consisted of three NPK levels (AD0 = unfertilized cultivation, AD1 = cultivation with 50% of recommended fertilization, and AD2 = cultivation with 100% ofrecommended fertilization). It was observedthat higher levels of NPK fertilization increase the number, size and marketable yield of storage roots of arracachacrop. NPK fertilization also increases the size and contentsof K, Mg, and Mn of storage roots, without interfering with the pulp pH and contentsof protein, Ca, Cu, and Fe. However, when the increase in root size is not accompanied by an increase in dry matter content, the starch, P, and Zn contents of the roots reduce with increasing levels of NPK fertilization.

show abstract