DESENVOLVIMENTO DE BETERRABA SUBMETIDA A NÍVEIS DE ÁGUA NO SOLO

• DOI: 10.22533/at.ed.85219260416

• Palavras-chave: Beta vulgaris L.; cultivo protegido; déficit hídrico.; Early Wonder.

• Keywords: Beta vulgaris L.; protected cultivation; water deficit; Early Wonder.

• Abstract:

  Beet production is influenced

  by soil moisture, and the deficit or surplus is

  detrimental to the development of the crop,

  making it necessary to replenish water at

  the right amount and at the right time. The

  objective of this work was to evaluate the development of the beet crop as a function of different levels of water in the soil. A

  randomized complete block design with five treatments and four replications was used.

  The treatments were constituted of five levels of water in the soil, and T1 represents the

  soil moisture in the field capacity corresponding to a minimum tension of -0.01 MPa;

  the levels T2, T3, T4 and T5 correspond respectively to the minimum voltages of -0.03;

  -0.045; -0.06 and -0.07 MPa. The water contents based on soil weight corresponding

  to each tension (-0.01, -0.03, -0.045, -0.06 and -0.07 MPa) were: 35.60%; 29.21%;

  28.33%; 27.09% and 26.80% respectively, and the soil density, determined with the

  aid of a volumetric ring, was 1.18 g cm-3. Glomeruli of the Early Wonder cultivar were

  sown in pots and micro tensiometers were installed in the center with a depth of 0.15

  m, to control soil water tension and irrigation management. At 75 DAS, the fresh matter

  mass of the shoot and root of the plants was evaluated. The fresh matter mass of the

  aerial part did not differ statistically in the tensions tested. Soil water tension of 0.045

  MPa resulted in higher yield mass of fresh root matter.

• Número de páginas: 15