Root growth, soil water content and yield of barley under different tillage systems on two soils in semiarid conditions

Experiments were conducted near Duke and Forgan, OK, on land enrolled in the Conservation Reserve program (CRP) that had been seeded to Old World bluestem (OWB) to evaluate tillage systems for returning CRP grassland to winter wheat production. Glyphosate controlled OWB 72% or less in no-till (NT) wheat. Disk tillage (DT) and moldboard plow tillage (MPT) for wheat seedbed preparation controlled OWB 87 and 99%, respectively, at Forgan and 96 and 100%, respectively, at Duke. At Forgan, OWB control in NT was higher when glyphosate was applied in July than when applied in May. Soil water content to a depth of 120 cm at planting was as high in DT and MPT without herbicide as in NT with 1,680 g ae/ha glyphosate. Within NT and MPT, glyphosate did not consistently increase soil water content compared to the respective nontreated checks. In DT, soil water content to a depth of 120 cm was greater following glyphosate at 1,680 g/ ha than without glyphosate. Wheat density was greater in DT and MPT than in NT. Compared to the NT no herbicide treatment, tillage tripled wheat yields. Wheat yields were often greater where glyphosate was applied before tillage. No-till wheat production immediately after CPR in Oklahoma without prior destruction of accumulated OWB residue does not appear feasible.

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Dynamics of soil water content under different tillage systems in agro-pastural eco-zone

Frontiers of Agriculture in China ◽

10.1007/s11703-008-0034-2 ◽

2008 ◽

Vol 2 (2) ◽

pp. 208-215 ◽

Cited By ~ 2

Author(s):

Yuecun Ma ◽

Hongling Qin ◽

Chunmei Yin ◽

Wangsheng Gao ◽

Hongsheng Zhang ◽

...

Keyword(s):

Water Content ◽

Soil Water ◽

Soil Water Content ◽

Tillage Systems

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Continuous ridges with film mulching improve soil water content, root growth, seed yield and water use efficiency of winter oilseed rape

Industrial Crops and Products ◽

10.1016/j.indcrop.2016.02.056 ◽

2016 ◽

Vol 85 ◽

pp. 139-148 ◽

Cited By ~ 29

Author(s):

Xiao-Bo Gu ◽

Yuan-Nong Li ◽

Ya-Dan Du

Keyword(s):

Root Growth ◽

Water Use Efficiency ◽

Water Content ◽

Soil Water ◽

Soil Water Content ◽

Water Use ◽

Seed Yield ◽

Winter Oilseed Rape ◽

Use Efficiency ◽

Film Mulching

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RESPONSES OF WHEAT PLANTS IN TERMS OF SOIL WATER CONTENT, BULK DENSITY, SALINITY, AND ROOT GROWTH UNDER DIFFERENT PLANTING SYSTEMS AND VARIOUS IRRIGATION FREQUENCIES

Journal of Plant Nutrition ◽

10.1080/01904161003654105 ◽

2010 ◽

Vol 33 (6) ◽

pp. 874-888 ◽

Cited By ~ 2

Author(s):

M. R. Pahlavan-Rad ◽

S. A. R. Movahedi-Naeini ◽

Mohammad Pessarakli

Keyword(s):

Root Growth ◽

Water Content ◽

Bulk Density ◽

Soil Water ◽

Soil Water Content

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The uptake of zinc-65 by oats in relation to soil water content and root growth

Soil Research ◽

10.1071/sr9760067 ◽

1976 ◽

Vol 14 (1) ◽

pp. 67 ◽

Cited By ~ 33

Author(s):

EKS Nambiar

Keyword(s):

Root Growth ◽

Thin Layer ◽

Water Content ◽

Soil Water ◽

Soil Water Content ◽

65Zn Uptake ◽

Access To Water ◽

Seminal Roots ◽

Dry Soil ◽

Water Contents

Effects of water content of the topsoil on root growth and 65Zn absorption by oats were measured. Seminal roots of oats grew through a labelled uptake layer that had been initially wetted to various water contents. The uptake layer was separated from adjacent layers of wet sand or soil by a thin layer of wax. When the uptake layer was wetted initially and allowed to dry during the uptake period, water content affected root growth and 65Zn uptake similarly. 65Zn absorption by unbranched seminal roots decreased linearly as soil water suction increased from 0.3 to 5 bar. Nevertheless significant amounts of 65Zn were absorbed (40% of that from wet soil) even when the soil water suction exceeded 15 bar, with negligible concomitant uptake of water. Provided the roots had access to water in a subjacent layer, rates of 65Zn absorption from dry soil increased with the age of the plants. The exudation of mucilage from the root was enhanced locally where the soil was dry. The mucilage may facilitate the transfer of zinc to the root in dry soil.

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Effects of spatial variability on soil physical attributes in areas cultivated with cassava prepared with different tillage systems

Comunicata Scientiae ◽

10.14295/cs.v8i2.1030 ◽

2018 ◽

Vol 8 (2) ◽

pp. 221-229

Author(s):

Edney Leandro Da Vitória ◽

Adriano Alves Fernandes

Keyword(s):

Spatial Variability ◽

Water Content ◽

Soil Water ◽

Soil Water Content ◽

Soil Depth ◽

Strong Dependence ◽

Soil Tillage ◽

Tillage Systems ◽

Classical Statistics ◽

Physical Attributes

The objective of this study was to understand the effect of the spatial variability of the soil physical attributes in areas cultivated with cassava with different soil tillage systems, using the techniques of classical statistics and geostatistics. The experiment was carried in 2013 in São Mateus - ES, Brazil, on a cohesive ultisol, with a plan relief. The preparation of the soil for transplanting were made in two adjacent areas of approximately 0.5 ha each, using up to two passes of a harrow disk or two passes of a chisel plow. The following soil physical attributes were studied 90 days after transplanting: soil density (DS), macroporosity (Macro) and microporosity (Micro), soil water content according to two preparations systems and two depth ranges. Eighty plants were randomly selected to perform the experiment. The soil physical properties resulted in spatial variability due to the strong dependence for all variables, tillage system and soil depth. The semivariograms were adjusted to the spherical and exponential models for the evaluated physical attributes. Except for water content, it was observed an increase in the range (A0) with increasing depth for both tillage systems. The soil water content presented a decrease about 23% for the harrowing and scarification systems.

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Onion yield as a function of soil tillage system and soil water content

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v24n2p115-120 ◽

2020 ◽

Vol 24 (2) ◽

pp. 115-120

Author(s):

Jardênia R. Feitosa ◽

Haroldo C. Fernandes ◽

Paulo R. Cecon ◽

Daniel M. Leite ◽

Filipe M. T. Nery ◽

...

Keyword(s):

Water Content ◽

Soil Water ◽

Soil Water Content ◽

Longitudinal Distribution ◽

Transverse Diameter ◽

Crop Response ◽

Tillage Systems ◽

Tillage System ◽

Water Contents ◽

Soil Water Contents

ABSTRACT Excessive tillage operations under inadequate conditions can raise the cost of agricultural production and lead to soil degradation without adequate crop response. The objective of this study was to evaluate the onion crop response to soil water contents and tillage systems. Three tillage systems were evaluated: P1 (plowing + two harrowings + two seedbed raising operations), P2 (two harrowings + one seedbed raising operation), P3 (one harrowing + one seedbed raising operation); and four soil water contents: 12, 15, 23 and 26%. The experiment was conducted in the irrigated perimeter of Tourão, Juazeiro, BA, Brazil (9° 24’ 7.3” S; 40° 26’ 8.7” W and altitude of 368 m), in 2017, and was installed in split plots, in a randomized block design, with four repetitions. Water contents were arranged in the plots and tillage systems in the subplots. Crop response to the applied treatments was evaluated through the determination of the emergence speed index of the seedlings, regularity of the longitudinal distribution of seedlings, final stand, total and marketable yields of the crop and yield per bulb transverse diameter class. The variation of soil water content had a quadratic effect on the variables emergence speed index, final stand and total onion yield. The treatments did not significantly affect the longitudinal distribution of plants and marketable yield. The tillage system composed of one harrowing and one seedbed raising operation showed to be the most appropriate for onion cultivation by direct seeding.

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