Liming materials. Determination of product effect on soil pH. Soil incubation method

2016 ◽  
Keyword(s):  
Soil Ph ◽  
Soil Incubation ◽  
Incubation Method ◽  
Product Effect

scholarly journals Determination of critical pH and Al concentration of acidic Ultisols for wheat and canola crops

2016 ◽  
Author(s):  
Abdulaha-Al Baquy ◽  
Jiu-Yu Li ◽  
Chen-Yang Xu ◽  
Khalid Mehmood ◽  
Ren-Kou Xu
Keyword(s):  
Soil Ph ◽  
Crop Production ◽  
Soil Acidity ◽  
Production Systems ◽  
Southern China ◽  
Chemical Properties ◽  
Dry Weight ◽  
Hydrated Lime ◽  
Dry Land

Abstract. Soil acidity has become a serious constraint in dry land crop production systems of acidic Ultisols in tropical and subtropical regions of southern China, where winter wheat and canola are cultivated as important rotational crops. Regardless of other common existing concerns in acidic Ultisols of southern China, it needs to be investigated whether soil acidity has any effect on wheat and canola growth. There is little information on the determination of critical soil pH as well as aluminium (Al) concentration for wheat and canola crops. The objective of this study was to determine the critical soil pH and exchangeable aluminium concentration (AlKCl) for wheat and canola production. Two pot cultures with two Ultisols from Hunan and Anhui were conducted for wheat and canola crops in a controlled growth chamber, with a completely randomized design. A soil pH gradient ranging from 3.7 (Hunan) and 3.97 (Anhui) to 6.5, with three replications, was used as a treatment. Aluminium sulfate (Al2(SO4)3) and hydrated lime (Ca(OH)2) were used to obtain the target soil pH levels. Plant height, shoot dry weight, root dry weight, and chlorophyll content (SPAD value) of wheat and canola were adversely affected by soil acidity in both locations. The critical soil pH and AlKCl of the Ultisol from Hunan for wheat were 5.29 and 0.56 cmol kg−1, respectively. At Anhui, the threshold soil pH and AlKCl for wheat were 4.66 and 2.36 cmol kg−1, respectively. On the other hand, the critical soil pH for canola was 5.65 and 4.87 for the Ultisols from Hunan and Anhui, respectively. The critical soil exchangeable Al for canola cannot be determined from the experiment of this study. The results suggested that the critical soil pH and AlKCl varied between different locations for the same variety of crop, due to the different soil types and their other soil chemical properties. The critical soil pH for canola was higher than that for wheat for both Ultisols, thus canola was more sensitive to soil acidity. Therefore, we recommend that liming should be undertaken to increase soil pH if it falls below these critical soil pH levels for wheat and canola production.

Spectral fusion of laser-induced breakdown spectroscopy (LIBS) and mid-infrared spectroscopy (MIR) coupled with random forest (RF) for quantitative analysis of soil pH

2021 ◽  
Author(s):  
Tingting Chen ◽  
Jing Men ◽  
Mingjing Zhao ◽  
Tianlong Zhang ◽  
Hua Li
Keyword(s):  
Infrared Spectroscopy ◽  
Soil Ph ◽  
Precision Agriculture ◽  
Soil Characteristics ◽  
Laser Induced Breakdown Spectroscopy ◽  
Mid Infrared ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Properties Of Soil

Soil pH is one of the important properties of soil. The quickly and accurately determination of the pH of soil is key to realizing precision agriculture and understanding soil characteristics...

scholarly journals ANALISIS KANDUNGAN FOSFOR PADA TANAH SAWAH DAN BERAS DI DESA WOLOAU KECAMATAN MAUROLE KABUPATEN ENDE

AGRICA ◽  
2019 ◽  
Vol 12 (1) ◽  
pp. 34-42
Author(s):  
Angelia Nia Dhasa ◽  
Charly Mutiara
Keyword(s):  
Soil Ph ◽  
Survey Method ◽  
Rice Varieties ◽  
Soil P ◽  
P Content ◽  
Low Efficiency ◽  
Ph Scale ◽  
Very High ◽  
Total P

High phosphorus (P) content and continuous fertilization cause P saturation, nutrient imbalance in the soil, low efficiency, and the possibility of other nutrients such as Zn becomes unavailable. Therefore it is necessary to research to determine the content of phosphorus in rice fields and rice in Woloau Village, Maurole District, Ende Regency. This study uses a survey method, where the determination of soil samples done by a purposive method. With this method, three hamlets were obtained, which cultivated Ciherang and Inari rice varieties. The main variables observed were available P and total soil P, P in rice. The supporting variables are C-Organic and soil pH. C-Organic is a percentage of fertility in the soil consisting of various C (carbon) bonds. The soil pH is the acidity or basicity of an object measured on a pH scale between 0 to 14. The results of research this show that the mainstay of P is available in paddy soils, namely 96.49 ppm, 101.9 ppm, 97.99 ppm, 98.32 ppm, 95.01, and TC3 99.11 ppm with very high criteria. The total P content in paddy soil is 177.54 ppm, 208.39 ppm, 192.61 ppm, 163.21 ppm, 161.99 ppm, 175.92 ppm with very high criteria. The P content in rice is 1201.88 ppm, 1197.34 ppm, 1230.11 ppm, 1231.23 ppm, 1240.51 ppm, 1248.09 ppm.

Sign in / Sign up

Export Citation Format

Share Document