Effects Of Irrigation Frequency On Soil Moisture Potential And Chemical Properties, Growth And Shot Yield Of Large – Green

Pot experiments were conducted under different status of soil moisture potential during different stages of rice. The results show that soil moisture potential regulation and control is able to increase the rice yield at each growth stages after returning green, the suitable soil water potential criteria for middle-season rice in Liaoning province at different stages is 5~10kPa in tillering initial stage, 35kPa at most in tillering final stage, 5~10kPa in jointing and heading stages, not more than 20kPa in Milk maturity stage; re-watering post drought has a compensation effect to rice whose soil suction potential is controlled in 5~10kPa at tillering initial stage according to the results that its tillers number, output, final root dry biomass and leaf dry weight were significant exceeding contrast; The research on rice quality indicates that water stress in jointing stage increase protein content but reduce eating quality.

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Belowground effects of porous pavements—Soil moisture and chemical properties

Ecological Engineering ◽

10.1016/j.ecoleng.2012.12.041 ◽

2013 ◽

Vol 51 ◽

pp. 221-228 ◽

Cited By ~ 24

Author(s):

Justin Morgenroth ◽

Graeme Buchan ◽

Bryant C. Scharenbroch

Keyword(s):

Soil Moisture ◽

Chemical Properties ◽

And Chemical Properties

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EFFECTS OF IRRIGATION FREQUENCY ON PLANT GROWTH AND NUTRIENT LEVELS OF PINE BARK MEDIA

HortScience ◽

10.21273/hortsci.25.8.849c ◽

1990 ◽

Vol 25 (8) ◽

pp. 849c-849

Author(s):

T.E. Bilderback

Keyword(s):

Plant Growth ◽

Shoot Growth ◽

Chemical Properties ◽

Dry Weight ◽

Pine Bark ◽

Growth Responses ◽

Irrigation Frequency ◽

Foliar Tissue ◽

Physical And Chemical ◽

And Chemical Properties

Ilex × `Nellie R. Stevens' holly, Rhododendron sp. `Hinodegeri' azalea and Pyracantha coccinea, scarlet firethorn rooted cuttings were potted in • 3.81 containers. Irrigation was applied by Dram rings daily, or every 2,4,or 6 days. Approximately 1000 ml of water were applied at each irrigation. Three container media, including pine bark, and pine bark amended with either Terra-Sorb AG synthetic moisture extender incorporated at 1.2 kg/m3 or Aqua-Gro G wetting agent incorporated at 0.9 kg/m3 plus monthly drenches of 700 ml of 2500 ppm Aqua-Gro L were compared for physical and chemical properties and plant growth responses. Decreasing irrigation decreased pH, increased nutrient leachate levels, and increased foliar tissue levels of N,P,K,Ca,and Fe in holly and azalea. Pyracantha top and root dry weight was reduced at 4 and 6 day irrigation intervals, holly top growth was reduced by 6 day and azalea had greatest shoot growth at 2 day irrigation and was reduced by other irrigation frequencies. Top growth of all 3 species and root growth of pyracantha was reduced in the pine bark treatment.

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MINING RESIDUE IN THE COMMERCIAL LIMESTONE BLENDING AND THE CHEMICAL ATTRIBUTES OF A LATOSOL

Revista Engenharia na Agricultura - REVENG ◽

10.13083/reveng.v28i.8457 ◽

2020 ◽

Vol 28 ◽

pp. 223-234

Author(s):

João Vidal de Negreiros Neto ◽

Rubens Ribeiro da Silva ◽

Gilson Araujo de Freitas ◽

Angela Franciely Machado ◽

Antônio Clementino dos Santos

Keyword(s):

Soil Moisture ◽

Soil Acidity ◽

Mining Activity ◽

The Third ◽

Chemical Attributes ◽

Mining Residues ◽

Moisture Potential ◽

Soil Moisture Potential ◽

Selection Of

The limestone mining activity causes environmental impacts due to the generation of waste. However, the reuse of these residues has been investigated with the objective of improving soil fertility and acidity correction. The objective of this work was to evaluate the potential for using mining residues in the commercial limestone blending and in the chemical attributes of a dystrophic Red Yellow Latosol. The experiment was carried out in three steps: the first corresponded to the sampling and characterization of the residues in the tailings pile; the second was the combination and characterization of the new soil acidity correction agents as well as the selection of treatments based on the Neutralization Power and doses of soil acidity correction agetns (0.0; 0.5; 1.0; 2.0; 4.0 t ha-1); in the third step, a test of the incubation and calibration of the application doses of the soil acidity correction agents was performed. It was found that even with the raise in the levels of Ca2+ and Mg2+ in the correction agents, it was not possible to provide an optimal supply of nutrients to the soil, a fact explained by the low constant solubility of CaCO3 and MgCO3. However, the commercial limestone blending with tailing was efficient, as it had a significant effect on raising the pH and neutralizing the soil moisture potential.

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Microclimate in forests with varying leaf area index and soil moisture: potential implications for seedling establishment in a changing climate

Journal of Ecology ◽

10.1111/1365-2745.12121 ◽

2013 ◽

Vol 101 (5) ◽

pp. 1201-1213 ◽

Cited By ~ 85

Author(s):

Georg von Arx ◽

Elisabeth Graf Pannatier ◽

Anne Thimonier ◽

Martine Rebetez

Keyword(s):

Soil Moisture ◽

Leaf Area Index ◽

Leaf Area ◽

Seedling Establishment ◽

Area Index ◽

Changing Climate ◽

Moisture Potential ◽

Soil Moisture Potential

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Fungal community characteristics and driving factors during the decaying process of Salix psammophila sand barriers in the desert

PLoS ONE ◽

10.1371/journal.pone.0258159 ◽

2021 ◽

Vol 16 (10) ◽

pp. e0258159

Author(s):

Yumei Liang ◽

Yong Gao ◽

Ruidong Wang ◽

Xia Yang

Keyword(s):

Soil Moisture ◽

Moisture Content ◽

Fungal Community ◽

Soil Moisture Content ◽

Chemical Properties ◽

Physical And Chemical Properties ◽

Fungal Community Composition ◽

Available Nitrogen ◽

Physical And Chemical ◽

And Chemical Properties

Wood-inhabiting fungi are crucial to wood decay and decomposition in S. psammophila sand barriers, which in turn consumingly influence nutrient dynamics in desert soils. In the case of an extremely arid desert, as opposed to forests, little of known about the fungal community composition of decaying wood and the effects of decomposing wood on soil physical and chemical properties. Combined with high-throughput gene sequencing technology, we investigated the relationships between microenvironment factors with fungal community composition and diversity during the decomposition of Salix psammophila sand barriers. The results showed that the destruction of lignocellulose components during the decay process of S. psammophila sand barrier alters the physical and chemical properties of the surrounding soil. Compared with one-year sand barrier, lignin and cellulose of seven-year S. psammophila sand barrier decreased by 40.48% and 38.33%, respectively. Soil available potassium and available nitrogen increased by 39.80% and 99.46%, respectively. We confirmed that soil available nitrogen, soil pH and soil moisture content significantly affected the fungal community distribution of S. psammophila sand barriers. Sordariomycetes are mainly affected by the positive correlation of soil pH, while Eurotiomycetes are most affected by the positive correlation of soil moisture content and soil porosity. Although our results highlighted the importance of bidirectional interactions between fungi in decayed sand barriers and soil properties, their contribution to the desert ecosystem still needs further confirmation from future studies. However, overall our findings improved the current understanding of the sand barrier-soil interactions on the process of ecological restoration.

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Arcillite: Effect on Chemical and Physical Properties of Pine Bark Substrate and Plant Growth

Journal of Environmental Horticulture ◽

10.24266/0738-2898-10.2.63 ◽

1992 ◽

Vol 10 (2) ◽

pp. 63-69 ◽

Cited By ~ 1

Author(s):

Stuart L. Warren ◽

Ted E. Bilderback

Keyword(s):

Plant Growth ◽

Chemical Properties ◽

Total Porosity ◽

Dry Weight ◽

Pine Bark ◽

Irrigation Frequency ◽

Shoot Dry Weight ◽

Air Space ◽

Physical And Chemical ◽

And Chemical Properties

Abstract The objective of this study was to determine the effect of arcillite, a calcined montmorillonite and illite clay, on the physical and chemical properties of a pine bark growth substrate and plant growth. To accomplish this, Cotoneaster dammeri ‘Skogholm’ and Rhododendron sp. ‘Sunglow’ were potted into pine bark substrate amended with 0, 27, 54, 67 or 81 kg/m3 (0, 45, 90, 112 or 136 lbs/yd3) arcillite. Plants were irrigated every l, 2, or 4 days. Container capacity, available water, and bulk density increased with increasing arcillite rate. Air space decreased with increasing arcillite rate. Total porosity and unavailable water were not affected by arcillite. Substrate NH4, NO3, P, K, Ca, and Mg concentrations increased with decreasing irrigation frequency. Substrate NH4, P, and K concentrations increased with increasing arcillite rate suggesting that arcillite improved retention within the container substrate. Azalea ‘Sunglow’ shoot dry weight decreased linearly with decreasing irrigation frequency and increased curvilinearly with increasing arcillite with maximum dry weight occurring at 67 kg/m3 (l12 lbs/yd2). Cotoneaster ‘Skogholm’ shoot dry weight increased linearly with increasing arcillite rate at 2 and 4 day irrigations and curvilinearly at 1 day irrigation with maximum weight at 67 kg/m3 (112 lbs/yd2).

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