The influence of biochar particle size and concentration on bulk density and maximum water holding capacity of sandy vs sandy loam soil in a column experiment

Geoderma ◽  
2019 ◽  
Vol 347 ◽  
pp. 194-202 ◽  
Author(s):  
Frank G.A. Verheijen ◽  
Anna Zhuravel ◽  
Flávio C. Silva ◽  
António Amaro ◽  
Meni Ben-Hur ◽  
...  
Keyword(s):  
Particle Size ◽  
Bulk Density ◽  
Sandy Loam ◽  
Column Experiment ◽  
Water Holding Capacity ◽  
Sandy Loam Soil ◽  
Loam Soil ◽  
Maximum Water ◽  
Water Holding

scholarly journals Pengaruh Pupuk Kascing Terhadap Kemampuan Mengikat Air pada Tanah Lempung dan Lempung Berpasir

2018 ◽  
Vol 12 (2) ◽  
pp. 87
Author(s):  
Monica Rina Tutkey ◽  
Fatchan Nurrochmad ◽  
Sri Harto Brotowiryatmo
Keyword(s):  
Sandy Loam ◽  
Water Holding Capacity ◽  
Sandy Loam Soil ◽  
Loam Soil ◽  
Water Holding

Sistem irigasi hemat air akan baik jika tanah mampu mengikat air secara maksimal. Kendalanya tidak semua tanah memiliki kemampuan mengikat air yang baik sehingga dibutuhkan cara untuk memaksimalkan kemampuan mengikat air. Pemberian pupuk organik dengan komposisi yang tepat dapat meningkatkan kemampuan mengikat air, karena bahan organik yang terkandung di dalamnya memiliki kemampuan agregasi yang dapat mengikat butiran-butiran kecil menjadi butiran yang lebih besar sehingga dapat menambah kemampuan mengikat air. Penelitian ini bertujuan mengetahui kemampuan mengikat air yang paling maksimal dari penambahan pupuk kascing sebesar 0%, 29%, 33%, 40%, 50%, 60%, 67% dan 71% pada jenis tanah lempung dan lempung berpasir. Setiap sampel pengujian diulang tiga kali. Metode Kurva pF digunakan untuk mengetahui kemampuan mengikat air. Hasil penelitian menunjukkan bahwa kemampuan mengikat air maksimum tanah lempung adalah 19,14% pada persentase pupuk kascing 40% atau meningkat 13,56% dari tanah aslinya. Pemberian pupuk kascing pada tanah lempung berpasir cenderung menurunkan kemampuan mengikat air. Kemampuan mengikat air maksimum  tanah lempung berpasir adalah 27,87% pada persentase pupuk kascing 0% (tanah asli). Penelitian ini dapat dilanjutkan dengan uji coba tanaman padi pada komposisi terbaik menggunakan metode hemat air.Vermicompost effect on water holding capacity of loam and sandy loam soil

Yields of Sub-humid Rainfed Crops in Relation to Soil Water Retention and Cropping Sequence

1978 ◽  
Vol 14 (3) ◽  
pp. 253-259 ◽  
Author(s):  
H. N. Verma ◽  
S. S. Prihar ◽  
Ranjodh Singh ◽  
Nathu Singh
Keyword(s):  
Water Retention ◽  
Field Experiments ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Yield Response ◽  
Soil Water Retention ◽  
Cropping Sequence ◽  
Loam Soil ◽  
Rabi Crops ◽  
Water Holding

SUMMARYField experiments were conducted for 4 years to study the yield of ‘kharif’ and ‘rabi’ crops grown in sequence on two soils differing in water-holding capacity. The results indicated that drought caused greater reduction in yield of rainy-season crops on loamy sand than on sandy loam soil. In low retentivity soil it was more profitable to raise a single crop of wheat on soil-stored water. In sandy loam soil of higher retentivity, two crops a year gave much higher yields than a single crop. Of the sequences tried, maize followed by wheat gave the highest and most stable yields. For ‘rabi’ crops, stored water showed a better yield response than an equivalent amount of rain during the growing season.

Soil bulk density and crop yield under eleven consecutive years of corn with different tillage and residue practices in a sandy loam soil in central Canada

2005 ◽  
Vol 84 (1) ◽  
pp. 41-53 ◽  
Author(s):  
R.F. Dam ◽  
B.B. Mehdi ◽  
M.S.E. Burgess ◽  
C.A. Madramootoo ◽  
G.R. Mehuys ◽  
...  
Keyword(s):  
Bulk Density ◽  
Crop Yield ◽  
Sandy Loam ◽  
Soil Bulk Density ◽  
Sandy Loam Soil ◽  
Central Canada ◽  
Loam Soil

scholarly journals Effect of biochar particle size on water retention and availability in a sandy loam soil

2020 ◽  
Vol 24 (12) ◽  
pp. 1042-1050
Author(s):  
Abdulaziz G. Alghamdi ◽  
Arafat Alkhasha ◽  
Hesham M. Ibrahim
Keyword(s):  
Particle Size ◽  
Water Retention ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Loam Soil

INFLUENCE OF BULK DENSITY AND FIELD STRUCTURE OF SOIL ON THE CALIBRATION CURVES OF GYPSUM MOISTURE BLOCKS

1959 ◽  
Vol 39 (1) ◽  
pp. 12-19
Author(s):  
S. J. Bocrget
Keyword(s):  
Soil Moisture ◽  
Bulk Density ◽  
Sandy Loam ◽  
Field Structure ◽  
Sandy Loam Soil ◽  
Soil Types ◽  
Soil Cores ◽  
Field Density ◽  
Calibration Curves ◽  
Loam Soil

Gypsum moisture blocks were calibrated in the laboratory in undisrupted soil cores, in soil cores which had been repacked to field density, and in unpacked soil baskets. Three soil types were used. It was found that the calibration curves obtained in the repacked soil cores and in the soil baskets were different from those obtained in the undisrupted soil cores. This indicates that the disruption of both structure and bulk density influenced the calibration of gypsum blocks. The effects were greater on the fine textured than on the coarse textured soils. The influence of bulk density was not important on a sandy loam soil. The variations in soil moisture obtained ranged from 1 to 6 per cent within the available water range.

scholarly journals CONDUCTIVITY AND PARTICLE SIZE MEASUREMENT IN SANDY LOAM SOIL USING ORGANIC AMENDMENT

2019 ◽  
Vol 14 (01) ◽  
pp. 74-81
Author(s):  
P. Jeyaseeli ◽  
F. Jeyamangalam ◽  
S. Selvaraj ◽  
S. C. Vella Durai
Keyword(s):  
Particle Size ◽  
Organic Amendment ◽  
Sandy Loam ◽  
Sandy Loam Soil ◽  
Size Measurement ◽  
Particle Size Measurement ◽  
Loam Soil

scholarly journals Soil Amendments Reduce Roof Garden Weight and Influence the Growth Rate of Lantana

HortScience ◽  
2003 ◽  
Vol 38 (4) ◽  
pp. 618-622 ◽  
Author(s):  
Nektarios Panayiotis ◽  
Tsiotsiopoulou Panayiota ◽  
Chronopoulos Ioannis
Keyword(s):  
Plant Growth ◽  
Bulk Density ◽  
Sandy Loam ◽  
Urea Formaldehyde ◽  
Field Capacity ◽  
Sandy Loam Soil ◽  
Formaldehyde Resin ◽  
Loam Soil ◽  
Physical And Chemical ◽  
Roof Garden

Four substrates were investigated for their efficacy as roof garden vegetative layers. The substrates comprised a sandy loam soil (S), sandy loam soil amended with urea formaldehyde resin foam (S:F) in a proportion of 60-40 v/v, sandy loam soil amended with peat and perlite (S:P:Per) in a proportion of 50-30-20 v/v and peat amended with urea formaldehyde resin foam (P:F) in a proportion of 60-40 v/v. The substrates were evaluated for their physical and chemical properties and their capacity to sustain growth of Lantana camara L. Physical and chemical evaluation included weight determination at saturation and at field capacity, bulk density determination, water retention, air filled porosity at 40 cm, pH and EC. When compared to the control (S) a weight reduction of 16.8%, 23.9% and 70.3% was obtained at field capacity with S:F, S:P:Per and P:F substrates respectively. Bulk density was reduced by 46%, 43% and 95%, in substrates S:F, S:P:Per and P:F, respectively, compared to the control substrate S. Air-filled porosity at 40 cm was slightly increased for substrate S:F while it was substantially increased for substrate P:F. The pH response between the initiation and the termination of the study was similar for the four substrates. EC decreased in substrates S and S:P:Per but increased in substrates S:F and P:F. Plant growth was monitored as shoot length, shoot number, main shoot diameter and the number of buds and flowers. Substrates S and S:F resulted in similar plant growth, while substrate S:F promoted flowering. Substrate S:P:Per induced slow plant growth during the first 6 months which subsequently increased resulting in a final growth that was satisfactory and comparable to the S and S:F substrates. Substrate P:F did not support sufficient plant growth and its use should be considered only in special cases where reduced weight of the roof garden is imperative.

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