Response of beet to doses of potassium in oxisol with high content of the nutrient
Revista Caatinga, ISSN: 1983-2125, Vol: 33, Issue: 3, Page: 713-719
2020
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Article Description
Fertiliser recommendation tables for beet culture have been prepared based on the response to potassium (K) doses in soils with a low nutrient content. However, there is little research that evaluates potassium fertilisation for beet crops in soil with high K content, a condition commonly found, which allows a better understanding of the crop’s response to the nutrient. The objective was to evaluate the response of beet to doses of K in Oxisol with a high K content. The experiment was carried out in the field, with an experimental design in randomised blocks, in a 4 x 2 factor scheme with four replications. The doses of K were 0, 60, 120 and 180 kg ha of KO, and the cultivars were ‘Early Wonder’ and ‘Kestrel’. At 50 days after transplantation, the levels of nitrogen (N), phosphorus (P), K and boron (B) in the diagnostic leaf were evaluated. Beet yield and accumulation of these four nutrients were analysed at harvest. The doses of K positively influenced the leaf content of K; however, without an effect on beet yield. Therefore, in Oxisol with a high K content available, potassium fertilisation is not recommended. To maintain soil fertility at a high potassium content, fertilisation with 162 and 126 kg ha of KO is recommended for ‘Early Wonder’ and ‘Kestrel’, respectively; doses equivalent to the quantities exported by the beet root.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85089000719&origin=inward; http://dx.doi.org/10.1590/1983-21252020v33n314rc; http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1983-21252020000300713&tlng=en; http://www.scielo.br/pdf/rcaat/v33n3/1983-2125-rcaat-33-03-0713.pdf; http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1983-21252020000300713&lng=en&tlng=en; http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1983-21252020000300713&lng=en&tlng=en; http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1983-21252020000300713; http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1983-21252020000300713; https://dx.doi.org/10.1590/1983-21252020v33n314rc; https://www.scielo.br/j/rcaat/a/9YLd3ZVk4b6wFVScpMBXCHd/?lang=en
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