Soil water content and water supply of plants in the southern Crimea

Soil water availability is the most important factor limiting crop yield worldwide. Understanding crop and weed transpiration in response to water supply may provide valuable insight into the mechanisms of crop yield loss in water-limited environments. A greenhouse experiment was conducted to quantify corn and velvetleaf transpiration in response to drying soil. Five plants of each species were well watered by adding back the equivalent water loss each day to reach field capacity, and five plants were subjected to drought stress (dry-down) by not replacing lost water. Normalized daily transpiration of dry-down plants was regressed on soil water content expressed as the fraction of transpirable soil water (FTSW). The critical soil water content below which plants begin to close their stomates occurred at FTSWcr= 0.36 ± 0.015 for corn and 0.41 ± 0.018 for velvetleaf. Total water transpired did not differ among species. Velvetleaf also responded to drought by senescing its oldest leaves, whereas corn mainly maintained its leaf area but with rolled leaves during peak drought stress. During a short-term drought, corn is expected to perform better than velvetleaf because it maintains full transpiration to a lower FTSW and does not senesce its leaves. Under severe long-term drought, the species that closes its stomates at greater FTSWcrwill conserve water and increase its chances of survival. Moreover, senescing all but the youngest leaves may ensure at least some seed production. Research is needed to evaluate the effects of soil water supply on corn–velvetleaf interference in the field.

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On the Relation of No-water-supply Days to Survival Percent and Soil Water Content in Trees for Landscaping

Journal of the Japanese Institute of Landscape Architects ◽

10.5632/jila1934.50.5_155 ◽

1986 ◽

Vol 50 (5) ◽

pp. 155-160 ◽

Cited By ~ 2

Author(s):

Chikayasu HAMANO ◽

Tadashi KOGA ◽

Yoshimitsu AOKI ◽

Kiyoshi KITAZAWA

Keyword(s):

Water Supply ◽

Water Content ◽

Soil Water ◽

Soil Water Content

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A calculation method of available soil water content : application to viticultural terroirs mapping of the Loire valley

OENO One ◽

10.20870/oeno-one.2004.38.4.913 ◽

2004 ◽

Vol 38 (4) ◽

pp. 231

Author(s):

Etienne Goulet ◽

René Morlat ◽

Dominique Rioux ◽

S. Cesbron

Keyword(s):

Water Supply ◽

Water Content ◽

Soil Water ◽

Soil Water Content ◽

Field Capacity ◽

Geographical Information ◽

Rooting Depth ◽

Wine Quality ◽

Available Water Content ◽

Loire Valley

<p style="text-align: justify;">Vine water supply is one of the most important elements in the determination of grape composition and wine quality. Water supply conditions are in relation with available soil water content, therefore this one has to be determined when vineyard terroir mapping is undertaken. The available soil water content depends on soil factors like water content at field capacity, water content at the permanent wilting point, apparent density and rooting depth. The aim of this study is to seek the relationship between these factors and a simple soil characteristic such as texture which could be easily measurable in routine cartography. Study area is located in the Loire valley, in two different geological regions. First results indicate that it is possible to determine available soil water content from clay percentage, then from soil texture. These results also show that available soil water content algorithms differ with geological properties. This calculation can be used at each auger boring and results can be spatialised within a Geographical Information System that allows the production of available water content maps.</p>

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Gogo rice agronomic patterns on water supply variables and light intensity

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/886/1/012131 ◽

2021 ◽

Vol 886 (1) ◽

pp. 012131

Author(s):

Siti Aisyah ◽

Chairani Hanum ◽

Revandy Iskandar M Damanik

Keyword(s):

Water Stress ◽

Light Intensity ◽

Water Supply ◽

Water Content ◽

Soil Water ◽

Soil Water Content ◽

Block Design ◽

The Third ◽

Randomized Block Design ◽

Number Of Leaves

Abstract The study was aimed to find out the varieties of Gogo rice that are resistence of water supply and the low of light intensity and giving information about the varieties that are resistence of double water stress. The study was conducted on November 2020 to May 2021 and used a Randomized Block Design (RAK) with three factors. The first factor is soil water content of D1 40%, D2 60%, D3 80%., the second is shade intensity of N0 0%, N1 20%, N2 40%, and N3 60%. and the third is the varieties of V1 Situbagendit, V2 Red Sigambiri, V3 Inpago 8, V4 White Sigambiri. The result showed that there were differences of growing in different treatnent where the highest of plant of D3N0V1 is 54,73, the highest number of leaves of D3N0V1 is 7.03 and the highest tillers of D3N0V1 is 6.01. On each lowest observation of D1N2V4, the plants died at the age of 12 mds. The findings of the study showed that the soil water content of 80 %, and shade intensity of 0 % are significant effect on Gogo Varieties of Situbagendit.

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Simulating the effects of different potassium and water supply regimes on soil water content and water table depth over a rotation of a tropical Eucalyptus grandis plantation

Forest Ecology and Management ◽

10.1016/j.foreco.2017.12.048 ◽

2018 ◽

Vol 418 ◽

pp. 4-14 ◽

Cited By ~ 16

Author(s):

M. Christina ◽

G. le Maire ◽

Y. Nouvellon ◽

R. Vezy ◽

B. Bordon ◽

...

Keyword(s):

Water Supply ◽

Water Content ◽

Soil Water ◽

Soil Water Content ◽

Water Table ◽

Eucalyptus Grandis ◽

Water Table Depth

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SOIL WATER CONTENT AFFECTS THE AVAILABILITY OF PHOSPHATE

Proceedings of the New Zealand Grassland Association ◽

10.33584/jnzg.1985.46.1696 ◽

1985 ◽

pp. 185-189

Author(s):

M.C.H.Mouat Pieter Nes

Keyword(s):

Water Content ◽

Soil Water ◽

Soil Water Content ◽

Soil Solution ◽

Equivalent Reduction

Reduction in water content of a soil increased the concentration of ammonium and nitrate in solution, but had no effect on the concentration of phosphate. The corresponding reduction in the quantity of phosphate in solution caused an equivalent reduction in the response of ryegrass to applied phosphate. Keywords: soil solution, soil water content, phosphate, ryegrass, nutrition.

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Effect of inter-row cultivation on soil carbon dioxide emission in a peach plantation

Agrokémia és Talajtan ◽

10.1556/agrokem.59.2010.1.19 ◽

2010 ◽

Vol 59 (1) ◽

pp. 157-164 ◽

Cited By ~ 1

Author(s):

E. Tóth ◽

Cs. Farkas

Keyword(s):

Water Content ◽

Soil Water ◽

Soil Water Content ◽

Carbon Dioxide Emission ◽

Nutrient Content ◽

Soil Disturbance ◽

Biological Properties ◽

Soil Tillage ◽

Favourable Effect ◽

Volumetric Soil Water Content

Soil biological properties and CO2emission were compared in undisturbed grass and regularly disked rows of a peach plantation. Higher nutrient content and biological activity were found in the undisturbed, grass-covered rows. Significantly higher CO2fluxes were measured in this treatment at almost all the measurement times, in all the soil water content ranges, except the one in which the volumetric soil water content was higher than 45%. The obtained results indicated that in addition to the favourable effect of soil tillage on soil aeration, regular soil disturbance reduces soil microbial activity and soil CO2emission.

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