Agronomic performance of beet cultivars as a function of phosphorus fertilization

Abstract

The lack of phosphorus in soil affects the development and productivity of plants; however, in order for them to express the full potential, it is necessary to supply this nutrient. The objective of this study was to define adequate doses of phosphorus, which maximize the productivity and quality of four beet cultivars, and to identify among them the most efficient use of phosphorus. The experiment was carried out at the Rafael Fernandes Experimental Farm, of the Federal Rural Semi-Arid University, Mossoró, RN state, Brazil, from July to October 2016. The experimental design was a randomized block in a 4 x 4 factorial scheme with four repetitions, corresponding to four beet cultivars (Early Wonder, Fortuna, Kestrel and Cabernet) and four doses of phosphorus (0, 90, 180 and 270 kg ha-1 of P2O5). The dose that maximized commercial productivity was 186 kg ha-1 of P2O5 for the cultivars Early Wonder (21.71 t ha-1) and Kestrel (22.59 t ha-1), 180 kg ha-1 of P2O5 for Carbenet (25.82 t ha-1) and 183 kg ha-1 of P2O5 for Fortuna (25.40 t ha-1). The Cabernet and Fortuna cultivars were classified as not efficient but responsive, whereas Early Wonder and Kestrel were efficient but not responsive. Phosphorus did not influence content of soluble solids and percentage of white rings at the root.

Fertigation with copper in beet crop in a semi-arid region

“…The difference between the 2019 and 2021 yields was possibly influenced by phytosanitary problems that resulted in the loss of plants at the end of the cycle of the first experiment. Compared with results obtained by other authors, 25.40 t ha -1 (Silva et al, 2019) and 21.94 t ha -1 (Batista et al, 2016) in the same experimental area, lower yield was found in 2019, while in 2021 it was higher, even being close to the national average, which varies between 35 and 50 t ha -1 (Trani et al, 2018).…”

“…Plowing and harrowing of the soil were carried out before preparing the beds. 190 kg ha -1 of P 2 O 5 was applied in the form of single superphosphate (18% P 2 O 5 , 16% Ca and 10% S) (Silva et al, 2019), seven days before planting. Topdressing fertilization was carried out via fertigation with split applications of 120 kg ha -1 of nitrogen and 180 kg ha -1 of K 2 O, 13.7 kg ha -1 of magnesium, 47.25 kg ha -1 of calcium and, only in 2021, 18.26 kg ha -1 of sulfur.…”

Agronomic performance of onion cultivars as affected by phosphate fertilization

“…In other vegetables, the responses were also positive for dry matter production as a function of phosphate fertilization, as in carrots (Assunção et al, 2016), beetroot (Silva et al, 2019) and potatoes (Fernandes et al, 2015).…”

Agronomic Biofortification and Yield of Beet Fertilization with Zinc

“…Nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg) (g kg −1 ), and Zn (mg kg −1 ) contents in the nutritional status diagnosis leaf (NSDL) of beet were determined at 55 DAS [27]. The leaves were cleaned in distilled water, dried in an oven with closed air circulation at 65 • C until they reached a constant mass, and then crushed in a Willey-type mill with a 1 mm mesh sieve.…”