Toxicity of fipronil to Folsomia candida in contrasting tropical soils and soil moisture contents: effects on the reproduction and growth

Experiment was executed to plant eco-grass of Bromus inermis Leyss on 15°bare slopes, and study effect of biological characters on dynamics of soil moisture contents. The results indicated that vegetation restored quickly on the bare slope after the eco-grass planted. There were 2473.4 kg/hm2 of overground biomass and 1744.1kg/hm2 of underground biomass, and 70% of underground biomass was in 0-10cm layer of soil. Meanwhile, there was a regulatory mechanism of soil moisture content for Bromus inermis Leyss. When rainfall was enough, soil moisture content in 0-80 cm layer could reach to the most of 26.83% quickly this year. Next it could decline near to the first value of 19.81% after rainfall stopped, and keep a dynamic balance between 19.48% and 19.96%. Moreover, the regulatory mechanism realized though underground biomass, and was clearer with underground biomass increasing, especially in the 0-40cm layer of soil.

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Effect of biofertilizers on growth of aloe (Aloe barbadensis Miller) and gel quality under different soil moisture contents

Revista Chapingo Serie Horticultura ◽

10.5154/r.rchsh.2017.02.013 ◽

2018 ◽

Vol XXIV (1) ◽

pp. 27-40

Author(s):

Juan Antonio Núñez-Colima ◽

◽

Aurelio Pedroza-Sandoval ◽

Ricardo Trejo-Calzada ◽

Ignacio Sánchez-Cohen ◽

...

Keyword(s):

Soil Moisture ◽

Aloe Barbadensis ◽

Moisture Contents

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The influence of different moisture contents and nitrogen levels on the formation of empty cavities in cucumbers (Cucumis sativus L.)

Acta Agrobotanica ◽

10.5586/aa.1982.006 ◽

2013 ◽

Vol 35 (1) ◽

pp. 61-68 ◽

Cited By ~ 2

Author(s):

Krystyna Elkner

Keyword(s):

Soil Moisture ◽

Cucumis Sativus ◽

Nitrogen Fertilization ◽

Fruit Development ◽

High Nitrogen ◽

Mechanical Tension ◽

Cucumis Sativus L ◽

Nitrogen Levels ◽

Moisture Contents ◽

Empty Cavity

Empty cavities were found already in very young cucumber fruits with diameter 1.5 cm. As the fruit develops the empty cavities augment and the number of fruits showing this defect increases. Low soil moisture and high nitrogen fertilization favour the formation of empty cavities. Their origination and changes were traced with anatomical methods in the course of fruit development. As a most plausible cause of their origination the author considers the enlargement of only part of the cells of the suture between the two (or three) carples. Due to this uneven enlargement of neighbouring cells strong mechanical tension probably arises amoung them, leading to the formation of ruptures separating these cells, consequently causing the separation of the carpel edges. Besides that, some of the cells of the suture which have markedly enlarged, often burst which also contributes to the formation of an empty cavity and enlarges its dimensions.

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Draft Requirement of Two Animal - Drawn Institute for Agricultural Research (IAR) Weeders

Journal of Engineering Research and Reports ◽

10.9734/jerr/2020/v10i317039 ◽

2020 ◽

pp. 14-20

Author(s):

Y. A. Unguwanrimi ◽

A. M. Sada ◽

G. N. Ugama ◽

H. S. Garuba ◽

A. Ugoani

Keyword(s):

Soil Moisture ◽

Moisture Content ◽

Bulk Density ◽

Soil Moisture Content ◽

Agricultural Research ◽

Soil Samples ◽

Soil Conditions ◽

Experimental Plot ◽

Moisture Contents ◽

Loam Soil

Draft requirements of two animal – drawn (IAR) weeders operating on loam soil were determined in the study. The implements include a straddle row weeder and an emcot attached rotary weeder evaluated under the same soil conditions, using a pair of white Fulani breed of oxen. The animal draft requirement was first estimated from the animal ergonomics measurements. Using area of 0.054 hectare as experimental plot for each implement the draft requirement of each implement was investigated after taking soil samples for soil moisture content and bulk density determinations. The implements tested showed variation in their average draft requirement. The straddle row weeder had the highest value of 338.15 N respectively while the emcot attached rotary weeder had the lowest value of 188.12 N with 47.03%, respectively. The average soil moisture contents and bulk density were 13.0% and 1.46%/cm3, respectively.

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Effects of Drought Stress on Photosynthetic and Physiological Parameters of Tomato

Journal of the American Society for Horticultural Science ◽

10.21273/jashs04725-19 ◽

2020 ◽

Vol 145 (1) ◽

pp. 12-17 ◽

Cited By ~ 1

Author(s):

Guoting Liang ◽

Junhui Liu ◽

Jingmin Zhang ◽

Jing Guo

Keyword(s):

Soil Moisture ◽

Drought Stress ◽

Crop Yields ◽

Physiological Parameters ◽

Practical Significance ◽

Horticultural Crop ◽

Photosynthetic Gas Exchange ◽

Moisture Contents ◽

Effects Of Drought ◽

Nonstomatal Limitation

Drought has become an important factor limiting crop yields in China. As an important greenhouse horticultural crop in China, the research of tomato (Solanum lycopersicum L. cv. Jinpeng No.10) is of great theoretical and practical significance. In the study, four different relative soil moisture contents (74% to 80%, 55% to 61%, 47% to 52%, and 25% to 30%) were used to induce drought stress. We investigated changes in photosynthetic gas exchange, chlorophyll fluorescence, and other related physiological parameters in response to different relative soil moisture contents. Drought inhibited the photosynthesis of tomato significantly, as shown by a clear decline in the net photosynthetic rate. Our results indicated stomatal limitation and nonstomatal limitation were responsible for the photosynthesis reduction.

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Effects of Plant Growth Regulators, Soil Moisture Contents, and Carbon/Nitrogen Ratios on Sex Differentiation in Persimmon (Diospyros kaki Thunb.) Flowers

Journal of Plant Growth Regulation ◽

10.1007/s00344-020-10170-9 ◽

2020 ◽

Author(s):

Liyuan Wang ◽

Huawei Li ◽

Peng Sun ◽

Yujing Suo ◽

Weijuan Han ◽

...

Keyword(s):

Soil Moisture ◽

Plant Growth ◽

Plant Growth Regulators ◽

Growth Regulators ◽

Sex Differentiation ◽

Diospyros Kaki ◽

Moisture Contents

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Effect of hydrogel on the performance of aerobic rice sown under different techniques

Plant Soil and Environment ◽

10.17221/81/2011-pse ◽

2011 ◽

Vol 57 (No. 7) ◽

pp. 321-325 ◽

Cited By ~ 11

Author(s):

A. Rehman ◽

R. Ahmad ◽

M. Safdar

Keyword(s):

Soil Moisture ◽

Yield Components ◽

Economic Loss ◽

Growth And Yield ◽

Aerobic Rice ◽

Water Deficiency ◽

Crop Water ◽

Moisture Contents ◽

Moisture Percentage ◽

Germinated Seeds

Declining water is a great concern in production of rice, because rice is more sensitive to water deficiency which restricts normal rice growth resulting in enormous economic loss. A field experiment was conducted to study the effect of hydrogel in different sowing techniques of aerobic rice viz. flat, ridge, and bed sowing. Observations on soil moisture percentage before every irrigation, yield, and yield components of rice were recorded. Application of hydrogel improved soil moisture contents in all the three sowing techniques as compared to soil without hydrogel. More soil moisture contents met the crop water needs and increased the number of germinated seeds. As a consequence of more emergence and better stand establishment, the yield components were also improved increasing the yield of rice in hydrogel amended soil in all sowing techniques. However, sowing of rice on beds with hydrogel amendment was found the most effective; it not only improved the performance of aerobic rice but also enhanced growth and yield of aerobic rice more than other sowing techniques.

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