Soil resistance to penetration in cotton rows and interrows

Baio, Fábio Henrique Rojo; Scarpin, Igor M.; Roque, Cassiano Garcia; Neves, Danilo Carvalho

doi:10.1590/1807-1929/agriambi.v21n6p433-439

Cited by 5 publications

(4 citation statements)

References 20 publications

(14 reference statements)

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“…The soil penetration resistances in the compacted layer were 0.20 MPa, 0.33 MPa, 0.50 MPa, 0.93 MPa and 1.77 MPa, respectively for the densities of 1.2 mg m -3 , 1.3 mg m -3 , 1.4 mg m -3 , 1.5 mg m -3 and 1.6 mg m -3 (Figure 1), at a depth of 0.15-0.20 m. This finding was in agreement with the literature, as values higher than 2 MPa generally prevent the development of most crops (Baio et al 2017). The values in the present study were close to those reported by Foloni et al (2006) The root and shoot dry matter yield increased by 47 % and 50 %, respectively, when the penetration resistance was increased to 0.95 MPa and 0.87 MPa, respectively.…”

Section: Resultssupporting

confidence: 90%

Guar root and shoot growth as affected by soil compaction

Bassegio

Sarto

Rosolem

et al. 2018

Pesqui. Agropecu. Trop.

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Guar (Cyamopsis tetragonoloba L.) is commonly grown in arid lands, because of its high drought-tolerance. However, soil compaction may be a limiting factor to its growth. This study aimed to evaluate the guar growth, according to the soil penetration resistance (0.20 MPa, 0.33 MPa, 0.50 MPa, 0.93 MPa and 1.77 MPa, in a layer with depth between 0.15 m and 0.20 m), in a Rhodic Acrudox soil. The shoot and root dry mass, root length by the Q1/2 index (mechanical soil penetration resistance in which the root growth is reduced by 50 %) and root diameter were evaluated. The impairment of the guar shoot growth begins when the penetration resistance is greater than around 1 MPa. The soil compaction alters the distribution of guar roots in the soil profile, concentrating them in the 0.15 m layer, but it does not prevent roots from penetrating this layer and developing in depth. The root diameter increases in the compacted layer. A soil penetration resistance of up to 1.77 MPa does not influence the root length density below the compacted layer, as well as the total root length density of guar. Although the guar Q1/2 index is greater than 1.58, the shoot and root dry mass are impaired.

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Section: Resultssupporting

confidence: 90%

Guar root and shoot growth as affected by soil compaction

Bassegio

Sarto

Rosolem

et al. 2018

Pesqui. Agropecu. Trop.

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“…The rainy months are the most limiting, due to the time of evaporation so that the soil reaches the adequate humidity, in order to reduce the problem of its compaction by the route of the sprayer, as Baio et al (2017) affirm. Although the Latosols present excellent physical properties, their inadequate management, through the revolving and the traffic of agricultural machines of concentrated form, has favored their compaction (Valicheski et al, 2012;Ataíde et al, 2012).…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, it is understood that the farmer carries out the spraying under conditions of high soil moisture, leading to higher compaction in the path of the sprayer. The increase in soil density and compaction is mainly related to the traffic of machines (Baio et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

Time Available for Spraying and Mechanized Sowing in the Northeast of the State of Mato Grosso Do Sul and South of Goiás

et al. 2018

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The sizing of mechanized agricultural systems depends on the soil and climatic conditions, the crop and the work regime. The aim of this study was to determine the probabilities of time available during an agricultural year for mechanized spraying and sowing in the northeast region of the State of Mato Grosso do Sul and south of Goiás. The meteorological restrictions imposed as unfavorable hours were: ambient temperature above 32ºC, relative air humidity below 50%, wind velocity above 15 km h-1 and soil volumetric moisture above 39% (humidity equivalent to 90% of the available water capacity for the studied soil). The mathematical models were elaborated for eight years, based on the historical data of the automatic station of the National Institute of Meteorology installed in the region. It was possible to determine the time available for mechanized sowing and agricultural spraying operations. The available times for every ten days of the agricultural year for mechanized spraying and sowing in the study region were determined. The hourly water balance is used for the restrictive study of soil moisture in determining the time available for mechanized operations. A single selfpropelled sprayer (30 m bar) and a single seed drill (48 rows) are not sufficient to meet the operational rate in an area of 3,000 ha in the northeast of the state of Mato Grosso do Sul and south of Goiás.

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“…Among the physical indicators, the penetration resistance (PR) indicated the level of soil compaction (Baio et al, 2017). A penetrometer (Static Cone, Semeato) took three measurements at each sampled point, at a depth of 20 cm.…”

Section: Physical Indicatorsmentioning

confidence: 99%

Soil Health Indicators for Analyzing Sustainability in Conventional and Traditional Agroecosystems

Quiroga-Arcila,

Baumann,

Acevedo-Osorio

2023

Trop Subtrop Agroecosyst

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Background. Rice production is a major economic activity in the department of Tolima, Colombia. However, conventional agronomic practices have led to soil depletion. In contrast, within the same region, traditional Indigenous Pijao systems persist, characterized by a high degree of crop diversification as well as no or reduced use of agrochemicals and mechanization. Objective. To evaluate soil health over time in rice monocultures and traditional Pijao agroecosystems in Colombia. Methodology. Data was collected between May and September 2019 at four municipalities in an Andean valley. Experimental units were arranged in four treatments classified according to a chrono sequence of consecutive rice monoculture: agroecosystems in which rice has never been planted or ‘traditional Pijao agroecosystems’ (TPA); rice monoculture for 5 to 10 years or ‘young rice agroecosystems’ (YRA); for 10 to 20 years or ‘medium rice agroecosystems’ (MRA); and for more than 20 years or ‘old rice agroecosystems’ (ORA). Twelve indicators were evaluated in each experimental unit: physical (penetration resistance, water infiltration, bulk density, and soil structural index), chemical (pH, CEC/CL%, EC, SOC), and biological (microbial respiration, earthworm abundance, and diversity of arthropods and plants) indicators. Results. Physical and chemical indicators did not present significant differences among the four chrono sequences evaluated. However, TPA obtained the highest values for SOC, structural stability index, and microbial respiration in comparison with conventional rice agroecosystems. Diversity of arthropods and plants significantly differed among the four treatments. Implications. Results suggest that traditional Pijao agroecosystems promote arthropod diversity and plant (weed and crop species) diversity, contributing to a greater sustainability of the region’s agroecosystems. Conclusions. The study illustrates the most relevant soil health indicators for the tropical dry forest zone of southern Tolima are those providing information on soil diversity, structural stability, compaction, and microbial respiration.

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Soil resistance to penetration in cotton rows and interrows

Cited by 5 publications

References 20 publications

Guar root and shoot growth as affected by soil compaction

Guar root and shoot growth as affected by soil compaction

Time Available for Spraying and Mechanized Sowing in the Northeast of the State of Mato Grosso Do Sul and South of Goiás

Soil Health Indicators for Analyzing Sustainability in Conventional and Traditional Agroecosystems

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