EFFECT OF FERTILIZER ON SOIL pH AFTER 17 YEARS OF CONTINUOUS CROPPING IN SOUTHWESTERN SASKATCHEWAN

1984 ◽  
Vol 64 (4) ◽  
pp. 705-710 ◽  
Author(s):  
C. A. CAMPBELL ◽  
R. P. ZENTNER
Keyword(s):  
Soil Ph ◽  
Average Rate ◽  
Ammonium Phosphate ◽  
Growing Season ◽  
Phosphate Fertilizer ◽  
Continuous Cropping ◽  
Ph Changes ◽  
Nitrate Fertilizer ◽  
Loam Soil ◽  
The One

Measurements of soil pH were made in the 0- to 2.5-cm, 2.5- to 7.5-cm, and 7.5-to 15-cm depths of a loam soil in two long-term (17 yr) continuous wheat rotations. One rotation received only ammonium phosphate fertilizer, while the other rotation received ammonium phosphate fertilizer plus ammonium nitrate fertilizer at an average rate of N of 35 kg∙ha−1∙yr−1. Soil pH was not measured at the start of the experiment. Measurements made at eight times between April and October 1983 showed that average pH in the surface 15 cm was lower in the rotation receiving N and P, compared to the one receiving only P, by about 0.5 pH units (pH 5.9 vs. 5.4 in dilute CaCl2). The soil pH varied considerably during the growing season and seemed to be inversely related to soil NO3-N. These pH changes occurred in a well buffered soil with CEC of 23.5 meq∙100 g−1. Scientists recommending that producers on the Prairies move to a more extended crop rotation so as to reduce land degradation, should bear in mind that eventually there may be a need to lime the soils to maintain production since such a system will necessitate the increased use of N fertilizers. Key words: pH changes during growing season, pH versus depth, soil acidity

scholarly journals THE INFLUENCE OF MULTIPLE-NUTRIENT MINERAL FERTILIZERS ON THE YIELD AND GRAIN QUALITY OF SPRING WHEAT IN THE FOREST-STEPPE ZONE OF THE ALTAI REGION

2021 ◽  
pp. 10-15
Author(s):  
A.V. Yakovlev ◽  
Keyword(s):  
Spring Wheat ◽  
Forest Soils ◽  
Grain Quality ◽  
Ammonium Phosphate ◽  
Growing Season ◽  
Steppe Zone ◽  
Phosphate Fertilizer ◽  
Forest Steppe ◽  
Wheat Grain ◽  
Npk Fertilizer

he effect of sowing multiple-nutrient mineral fertilizerapplication on spring wheat crops of the Astrid variety on gray forest soils of the forest-steppe zone was found. The study of the weather conditions of the growing season showed that the total amount of precipitation during the growing season was significantly lower than the average annual -158 mm as compared to 220 mm of the normal. The monthly rainfalls sharply differed from long-term ones; this had a significant impact on the formation of yield and grain quality. The application of NPK fertilizer and ammoni-um-phosphate-sulfate at a rate of 100 kg ha and ammoni-um phosphate fertilizer at a rate of 50 kg ha increased the yield of spring wheat grain by 8-66%, and the gluten con-tent in the variant with ammonium phosphate fertilizer at the level of 26-31% ascompared to 28% in the control. The payback of 1 kg of the primary nutrient of the fertilizers by grain yield gain was the highest against the background of NPK fertilizer and ammonium-phosphate-sulfate -55.0 and 40.8 kg, respectively. The protein content in wheat grain for in all fertilization variants ranged within 13.1-15.2% as compared to 13.7% in the unfertilized variant. The thou-sand-kernel weight as a result of obtaining high gains in the variants of sowing application ranged within 31.1-38.3 g; TKW below the control was in the variants with ammonium phosphate fertilizer and ammonium-phosphate-sulfate -31.1 and 33.4 g. The grain-unit belonged to Class 3 (no less than 730). It has been found that it is agronomically efficient when cultivating soft spring wheat in a temperately moist zone, on more arid years, on gray forest soils, when sowing, to apply NPK fertilizer and ammonium-phosphate-sulfate at a rate of 100 kg ha.

Effect of an acidifying nitrogen fertiliser and lime on soil pH and wheat yields. 1. Soil effects

1994 ◽  
Vol 34 (2) ◽  
pp. 237 ◽  
Author(s):  
MG Mason ◽  
WM Porter ◽  
WJ Cox
Keyword(s):  
Soil Ph ◽  
Ammonium Phosphate ◽  
High Rate ◽  
Continuous Cropping ◽  
Exchangeable Ca ◽  
Acid Accumulation ◽  
Soil Effects ◽  
P Application ◽  
Over Time

Three long-term trials were commenced in 1980 at Merredin, Wongan Hills, and Newdegate to investigate the effect of an acidifying fertiliser containing 17.5% nitrogen (N) and 7.6% phosphorus (P) (based on ammonium sulfate and ammonium phosphate) on soil pH, soil acidity related problems, and wheat grain yields under continuous cropping. Treatments were 3 rates (kg/ha) of N + P applied with the cereal seed (nil; 17.5 N + 7.6 P; 35 N + 15.2 P), with or without 3 t/ha of ground limestone (with or without MgSO4, KCl, Moo3) applied in 1980. Two extra treatments were 2 rates of limestone (70, 140 kg/ha) topdressed with the cereal crop each year along with the low and high N + P fertiliser treatments, respectively. This paper reports soil properties for the first 10 years of the trials. In the acidic Merredin soil (pH 4.3), there was minimal effect of N + P fertiliser on soil pH. The pH was slightly reduced at 0-10 cm depth. At Wongan Hills, soil pH at 0-10 cm depth was reduced over time by N + P application from 4.8 to 4.2. At Newdegate, only the high rate of N + P reduced pH over time, from 4.6 to 4.3 at 0-10 cm. Limestone at 3 t/ha in 1980 increased soil pH at 0-10 cm depth at all 3 sites; however, in all cases pH fell with time. Limestone applied at 70 or 140 kgha with each N + P application increased pH at 0-10 cm depth by 0.1-0.4, 0.1-0.4, and 0.3-0.9 pH units at Merredin, Wongan Hills, and Newdegate. Soil aluminium (Al) concentrations (extracted in 0.01 mol CaCl2/L) were generally low at Wongan Hills and Newdegate in the absence of N + P fertiliser. These levels rose after N + P application to 4 and 2 �g/g at 0-10 cm depth at Wongan Hills and Newdegate. Soil A1 concentrations at Merredin were high, particularly in the subsoil: 3-5, 9-13, and 23-29 �g/g in the 0-10, 10-20, and 20-40 cm depths. With the high rate of N + P, A1 concentration rose to 10 �g/g at 0-10 cm. Application of 3 t/ha of limestone reduced this to <1-2 �g/g. Application of 140 kg/ha of limestone with the high N + P fertiliser rate lowered soil A1 concentration at 0-10 cm. Extra acid that accumulated in treated plots compared with control plots varied from -34.7 kmol/ha (acid-neutralised) for the treatment at Merredin receiving only 3 t lime/ha in 1980 to 23.8 kmol/ha for the treatment at Wongan Hills receiving high N + P. With the treatments receiving lime only, the amounts of acid neutralised were only 82, 66, and 58% of those predicted at Merredin, Wongan Hills, and Newdegate, respectively. Acid accumulation in the 3 treatments receiving high N + P was within the predicted range at Wongan Hills, as it was for the treatment receiving high N + P plus 3 t lime/ha in 1980 at both Merredin and Newdegate. However, for the treatments receiving only high N + P or high N + P plus 140 kg lime/ha. year at these 2 sites, the acid accumulation rates were less than predicted. Levels of exchangeable cations in the soil were highest at Wongan Hills and lowest at Newdegate. Application of N + P decreased Ca concentration at all sites and reduced the concentration of exchangeable Mg at Wongan Hills. Lime applied at 3 t/ha increased the concentrations of exchangeable Ca and Mg at all sites. There were no effects of treatments on concentrations of exchangeable K or sodium.

The Influence of Long-Term Fertilization on Soil Acidification

2014 ◽  
Vol 955-959 ◽  
pp. 3552-3555 ◽  
Author(s):  
Han Lin ◽  
Cheng Ming Jing ◽  
Ji Hong Wang
Keyword(s):  
Soil Ph ◽  
Soil Acidification ◽  
Phosphate Fertilizer ◽  
Research Area ◽  
Potassium Fertilizer ◽  
Nitrogenous Fertilizer ◽  
Exchangeable Hydrogen ◽  
Exchangeable Aluminum ◽  
The One

Based on the long-term experimental field of Jilin Agricultural University as a platform. Aiming at groping for the influence of long-term fertilized of the acidity changes on soil in research area. The results show that: compared with CK group. The soil pH declined as a result of applying nitrogenous fertilizer chronically. Instead the content of exchangeable acid, exchangeable hydrogen and exchangeable aluminum increased. The content of soil organic matters reduced with the decrease of soil pH application of phosphate fertilizer and potassium fertilizer could achieve the same objective. But the Influence was not as significant as the one fertilized with N.

Nursery growth of conifer seedlings using fertilizers of different solubilities and application time, and their forest growth

1988 ◽  
Vol 18 (2) ◽  
pp. 172-180 ◽  
Author(s):  
R. van den Driessche
Keyword(s):  
Soil Ph ◽  
Ammonium Phosphate ◽  
Dry Weight ◽  
Growing Season ◽  
White Spruce ◽  
Douglas Fir ◽  
Forest Growth ◽  
Stem Volume ◽  
Late Season ◽  
Growing Seasons

Douglas-fir (Pseudotsugamenziesii (Mirb.) (Franco) and white spruce (Piceaglauca) (Moench) Voss) seedlings were grown in a bare-root nursery for two growing seasons with one of four fertilizers, Osmocote (17-7-12) (OSM), ammonium phosphate (11-55-0) (AMP), ammonium sulphate (21-0-0) (AMS), or Hi-Sol (20-20-20) (HIS), each supplying one of three levels of N: 0, 210, or 350 kg N ha−1, at two different frequencies throughout the growing seasons. Fertilizers, levels, and frequencies were arranged in a factorial design and replicated in three blocks on each species. Additionally, Douglas-fir seedlings that had been grown for two seasons without fertilization were treated with the same amounts, as supplied over two seasons, of AMP, AMS, and HIS between 1 September and 20 October, as a late-season treatment. After two seasons, mean dry weight differences due to fertilizers were, for Douglas-fir seedlings: AMP > AMS > HIS = OSM, and for white spruce seedlings: AMS = AMP > HIS > OSM. Dry weight was increased by increasing level of fertilizer. Fertilization increased shoot growth compared with root growth and resulted in seedlings having more dry matter in stems and less in needles at the end of two seasons. Dry weight of 2-0 white spruce was correlated with soil pH (r2 = 0.61) NO3 (r2 = 0.57), and P (r2 = 0.34) measured in September of the first growing season, indicating that fertilizers affected growth by their influence on these factors. Measurements made at planting showed late-season fertilized Douglas-fir had higher N and P tissue concentrations than growing-season fertilized trees. On average late-season fertilized trees had 6% higher survival than growing-season fertilized trees after planting in the forest. Survival appeared related to needle N concentration at planting, with maximum survival occurring at about 2.1% N. Height and stem volume relative growth rates were higher for late-season fertilized trees, although growing-season fertilized trees were still 9% taller than late-season fertilized trees after three seasons in the forest. Results suggested that fertilizer solubility was not as important for nursery growth as fertilizer composition, and its effect on soil pH, and that late-season fertilized stock might outperform growing-season fertilized stock in the forest.

scholarly journals Key soil parameters affecting the survival of Panax notoginseng under continuous cropping

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Wumei Xu ◽  
Fengyun Wu ◽  
Haoji Wang ◽  
Linyan Zhao ◽  
Xue Liu ◽  
...  
Keyword(s):  
Soil Ph ◽  
Pearson Correlation ◽  
Principal Component ◽  
Panax Notoginseng ◽  
Soil Parameters ◽  
Continuous Cropping ◽  
Poor Growth ◽  
Available N ◽  
The Poor ◽  
Replant Problem

AbstractNegative plant-soil feedbacks lead to the poor growth of Panax notoginseng (Sanqi), a well-known herb in Asia and has been used worldwide, under continuous cropping. However, the key soil parameters causing the replant problem are still unclear. Here we conducted a field experiment after 5-year continuous cropping. Sanqi seedlings were cultivated in 7 plots (1.5 m × 2 m), which were randomly assigned along a survival gradient. In total, 13 important soil parameters were measured to understand their relationship with Sanqi’s survival. Pearson correlation analysis showed that 6 soil parameters, including phosphatase, urease, cellulase, bacteria/fungi ratio, available N, and pH, were all correlated with Sanqi’s survival rate (P < 0.05). Principal component analysis (PCA) indicated that they explained 61% of the variances based on the first component, with soil pH being closely correlated with other parameters affecting Sanqi’s survival. The optimum pH for Sanqi growth is about 6.5, but the mean soil pH in the study area is 5.27 (4.86–5.68), therefore it is possible to ameliorate the poor growth of Sanqi by increasing soil pH. This study may also help to reduce the replant problem of other crops under continuous cropping since it is widespread in agricultural production.

scholarly journals Biological and Chemical Phosphorus Fertilizers Effect on Yield and P Accumulation in Rapeseed (Brassica napus L.)

2012 ◽  
Vol 40 (2) ◽  
pp. 210 ◽  
Author(s):  
Hamid MADANI ◽  
Mohammad Ali MALBOOBI ◽  
Kioomars BAKHSHKELARESTAGHI ◽  
Agnieszka STOKLOSA
Keyword(s):  
Seed Yield ◽  
Block Design ◽  
Ammonium Phosphate ◽  
Phosphate Fertilizer ◽  
Fertilizer Application ◽  
Interaction Effects ◽  
Brassica Napus L ◽  
Sowing Time ◽  
Plant Seed ◽  
Plant Seed Oil

A field experiment was conducted for investigation of different phosphorus fertilizer sources and their importance in rapeseed farms on 2007 at Arak, Iran. Ammonium phosphate fertilizer with 50% P2O5 (APF) was as chemical phosphorus sources with 3 rates of application and Phosphor solublizing bacteria (PSB) was as biological phosphorus surcease in 4 levels. Experiment was factorial arrangement in randomized complete block design with 3 replications. APF levels were control (AP0), 125kg/ha APF (AP1) and 250kg/ha (AP2) application and PSB levels were, control (PSB0), PSB at sowing time only (PSB1), PSB as top dress fertilizer after over wintering only (PSB2) and PSB at dual fertilizing in sowing time and also after over wintering (PSB3). The statistical analyses were showed that the PSB3 treatment was a great treatment for increasing seed yield. The heist rate of seed yield was recorded at 9.9t/ha under dual fertilizing in sowing time and after rosette over wintering stage. The interaction effects of phosphorus solublizing bacteria and ammonium phosphate fertilizer application had not significant effect on plant height, biomass yield, number of silique per plant, seed oil percent and seed yield. Interaction effects of phosphorus solublizing bacteria and ammonium phosphate fertilizer application were significant for plant tissues phosphorus content.

Effect of Long-term Cropping Systems on Soil Hydrophobicity of a Clay Loam Soil Under Dryland Conditions in Southern Alberta

2022 ◽  
Author(s):  
Jim J. Miller ◽  
Mallory Owen ◽  
Ben Ellert ◽  
Xueming Yang ◽  
Craig F. Drury ◽  
...  
Keyword(s):  
Continuous Cropping ◽  
Strong Positive Correlation ◽  
Clay Loam ◽  
Clay Loam Soil ◽  
Manure Application ◽  
Organic Carbon Concentration ◽  
Southern Alberta ◽  
Loam Soil ◽  
Soil Hydrophobicity

The objective was to quantify the effect of crop rotations, crop type, life cycle, nitrogen fertilizer, manure application, and fallow on soil hydrophobicity (SH). The SH was measured for a long-term (16 yr) dryland field experiment on a Dark Brown clay loam soil in southern Alberta, Canada. Mean SH was significantly (P ≤ 0.05) greater in rotations with grass, perennial crops, manure application, and continuous cropping; whereas cereal-legume rotations and N fertilizer effects were undetectable. A strong, positive correlation occurred between SH and soil organic carbon concentration (r=0.73). Soil water repellency should be measured on these plots using water-based methods.

scholarly journals Effects of Continuous Cropping on Bacterial Community Structure in Rhizospheric Soil of Sweet Potato 

2020 ◽  
Author(s):  
Zhiyuan Gao ◽  
Yaya Hu ◽  
Meikun Han ◽  
Junjie Xu ◽  
Xue Wang ◽  
...  
Keyword(s):  
Community Structure ◽  
Bacterial Community ◽  
Sweet Potato ◽  
Soil Ph ◽  
Bacterial Community Structure ◽  
Continuous Cropping ◽  
Rhizospheric Soil ◽  
Sweet Potatoes ◽  
Potato Varieties ◽  
Soil Bacterial Community Structure

Abstract Background: Continuous cropping obstacles from sweet potato are widespread, which seriously reduce the yield and quality, cause certain economic losses. Bacteria of Rhizospheric soil are the richest and are associated with obstacles to continuous cropping. However, few studies on how continuous sweet potato cropping affects the rhizospheric soil bacterial community structure. In the study, Illumina Miseq method was used to explore rhizosphere soil bacterial community structure changes with different sweet potato varieties, and the correlation between soil characteristics and this bacterial community after continuous cropping, to provide theoretical guidance for prevention and treatment of sweet potatoes continuous cropping obstacles. Results: After continuous cropping two years, the results showed that (1) the dominant bacterial phlya in rhizospheric soils from both Xushu18 and Yizi138 were Proteobacteria, Acidobacteria, and Actinobacteria. The most dominant genus was Subgroup 6_norank. The relative abundance of rhizospheric soil bacteria of two sweet potato varieties changed significantly. (2) The richness and diversity indexes of bacteria in Xushu18 rhizospheric soil were higher than those from Yizi138 after continuous cropping. Moreover, the beneficial Lysobacter and Bacillus were more prevalent in Xushu18, but Yizi138 contained more harmful Gemmatimonadetes. (3) Soil pH decreased after continuous cropping, and redundancy analysis result indicated that soil pH was correlated significantly with bacterial community. Spearman’s rank correlations coefficients analysis demonstrated that pH was positively associated with Planctomycetes and Acidobacteria, but negatively associated with Actinobacteria and Firmicutes.Conclusions: After continuous cropping, the bacterial community structure and physicochemical properties of sweet potato rhizospheric soil were unbalanced, and the changes from different sweet potato varieties were different. The contents of Lysobacter and Bacillus were higher in the sweet potato variety resistant to continuous cropping. It provides a basis for developing new microbial fertilizer for sweet potatoes to alleviate continuous cropping obstacle.

scholarly journals Effects of Continuous Cropping on Bacterial Community Structure in Rhizospheric Soil of Sweet Potato

2020 ◽  
Author(s):  
Zhiyuan Gao ◽  
Yaya Hu ◽  
Meikun Han ◽  
Junjie Xu ◽  
Xue Wang ◽  
...  
Keyword(s):  
Community Structure ◽  
Bacterial Community ◽  
Sweet Potato ◽  
Soil Ph ◽  
Bacterial Community Structure ◽  
High Throughput Sequencing ◽  
Potato Industry ◽  
Continuous Cropping ◽  
Rhizospheric Soil ◽  
Potato Varieties

Abstract Background: Continuous cropping obstacles from sweet potato are widespread, which seriously reduce the yield and quality, restrict the sustainable development of sweet potato industry. Bacteria are the most abundant in rhizospheric soil and have a certain relationship with continuous cropping obstacles. However, there are few reports on how continuous cropping affected the bacterial community structure in the rhizospheric soil of sweet potato. In this study, high-throughput sequencing technique was used to explore the changes of rhizospheric soil bacterial community structure of different sweet potato varieties, and the correlation between soil characteristics and this bacterial community after continuous cropping, so as to provide a theoretical basis for the prevention and control of sweet potato continuous cropping obstacles.Results: After two years of continuous cropping, the results showed that (1) the dominant bacteria phlya in rhizospheric soils from both Xushu18 and Yizi138 were Proteobacteria, Acidobacteria, and Actinobacteria. The most dominant genus was Subgroup 6_norank. Significant changes in the relative abundance of rhizospheric soil bacteria were observed for two sweet potato varieties. (2) Bacterial richness and diversity indexes of rhizospheric soil from Xushu18 were higher than those from Yizi138 after continuous cropping. Moreover, the beneficial Lysobacter and Bacillus were more prevalent in Xushu18, but Yizi138 contained more harmful Gemmatimonadetes. (3) Soil pH decreased after continuous cropping, and redundancy analysis showed that soil pH was significantly correlated with bacterial community. Spearman’s rank correlations coefficients analysis demonstrated that pH was positively correlated with Planctomycetes and Acidobacteria, and negatively correlated with Actinobacteria and Firmicutes.Conclusions: After continuous cropping of sweet potato, the bacterial community structure and physicochemical properties in the rhizospheric soil were unbalanced, and the changes of different sweet potato varieties were different. The contents of Lysobacter and Bacillus were higher in the sweet potato variety resistant to continuous cropping. It provides a basis for the development of special microbial fertilizer for sweet potatoes to alleviate continuous cropping obstacle.

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