A influência de cultivos agrícolas em parâmetros da qualidade do solo

• DOI: 10.22533/at.ed.99319240711

• Palavras-chave: Respiração basal do solo, Capacidade de retenção de água, Qualidade do solo, Ecologia do solo, Manejo agrícola.

• Keywords: Soil basal respiration, Water retention capacity, Soil quality, Soil ecology, Agricultural management.

• Abstract:

  The agroecosystems soil is a complex environment constituted by

  chemical, physical and biological attributes that interact with each other and are

  influenced by agricultural crops management. Thus, this work evaluated soil quality

  from soil surface temperature, water retention capacity (CRA) and soil basal respiration

  (RBS) in three agricultural crops: organic orchard, organic vegetable garden and

  uncovered soil. The highest soil surface temperature during the day was recorded in

  the uncovered soil in relation to the soil of the orchard and the vegetable garden,

  because in the latter there was vegetation cover that prevented the direct incidence

  of solar radiation in the soil. Higher soil surface temperatures indicate excessive heat

  for much of the beneficial biota, limiting its presence and activity. The CRA of the

  orchard was higher than that of the vegetable garden and the uncovered soil, indicating

  a higher presence of macropores in the first, which in water stress situations allow

  water supply to the cultivated species for a longer period than in the other crops. The

  RBS in the orchard and in the vegetable garden was superior to the uncovered soil,

  demonstrating that the first two had better shelter conditions for soil biota. The best

  sustainability indicators observed in the orchard may be the result of the absence of

  soil revolving and permanent plant cover between rows, which have a positive impact

  both on the physical component related to the water retention capacity and on the

  biological component related to soil respiration and temperature

• Número de páginas: 15