Physical properties and root environment tendencies during wetness and drying periods

Soil wetness has important agricultural implications. Reasons for the upsurge soil moisture in situ monitoring increase. Data interpretation is severely limited without soil property data. The agricultural soils need, thermodynamically, proper irrigation for plant physiological processes. The objective was to investigate soil physical parameters disturbance by soil wetness interrelated with root growth in a savanna loam soil. Experimental units consisted of (a) 9 polyvinyl cylinders, 15.24 cm in diameter and 20 cm height, with a soil volume of 2.50 kg/cylinder for infiltration estimations (b) 48 square glass container 3x15x15 cm for root growth assessments and 18 porometers for porosity evaluations. Statistical analysis under a randomized block design with three replications and three factors: humidity with five levels (3, 6, 9, 12 and 15%), soil depth (0-15, 15-30 and 45-60) and compaction with three levels (0, 13 and 26 blows).  Soil shear and density are independent soil variables; but also, both are wetness dependent. The infiltration effect on bulk density and shear tension resulted in inversely proportionally. The soil apparent dry densities (bulk density) or wet, are dynamic variables that change with natural drying processes. Soil water retention rises as bulk density increases. Root growth offers weightier variability with respect to shear than versus bulk density. Root growth showed its greatest at lower shear tension, lower bulk density and daily and every two days of irrigation. Irrigating this soil every two or three days will give progress to roots. Wetness is the fulcrum of all other soil properties for plant existence requirements.

• 主要作者: Hossne García, Américo José (author)
• 其他作者: Trujillo Galindo, María Ester (author), Maita Esteves, Gabriela Alexandra (author), Rocca Chaviel, Yonatan José (author)
• 格式: article
• 语言: spa
• 出版: 2019
• 主题: Superficie de respuestas; prueba Proctor; ambiente radicular; Response surfaces; proctor test; root soil environments
• 在线阅读: https://revistasespam.espam.edu.ec/index.php/Revista_ESPAMCIENCIA/article/view/186