Evaluating the key factors of soil fertility and tomato yield with fresh and aged biogas slurry addition through greenhouse experiment

2021 ◽  
Author(s):  
Zewen Jin ◽  
Renhua Sun ◽  
Lifeng Ping ◽  
Chang’ai Zhang ◽  
Mengfei Ying ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Greenhouse Experiment ◽  
Biogas Slurry ◽  
Key Factors ◽  
Tomato Yield

Physical activation of biochar and its meaning for soil fertility and nutrient leaching - a greenhouse experiment

2012 ◽  
Vol 28 (2) ◽  
pp. 177-184 ◽  
Author(s):  
N. Borchard ◽  
A. Wolf ◽  
V. Laabs ◽  
R. Aeckersberg ◽  
H. W. Scherer ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Nutrient Leaching ◽  
Greenhouse Experiment ◽  
Physical Activation

scholarly journals Spatial Variations of Vegetation Index from Remote Sensing Linked to Soil Colloidal Status

Land ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 80
Author(s):  
Marco Bascietto ◽  
Enrico Santangelo ◽  
Claudio Beni
Keyword(s):  
Soil Fertility ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Negative Impact ◽  
Central Italy ◽  
Spatial Variations ◽  
Key Factors ◽  
Wheat Cultivation ◽  
Phosphorus And Potassium ◽  
Field Variability

Recent decades have seen a progressive degradation of soils owing to an intensification of farming practices (weeding and high trafficking), increasing use of pesticides and fertilizers, mainly nitrogen, resulting in a steady decline in soil organic matter, a key component to maintain soil fertility. The work has coupled the normalized difference vegetation index (NDVI) of wheat cultivation in Central Italy to soil properties where the wheat was grown to identify the properties linked to within-field variability in productivity. NDVI was assessed through Copernicus Sentinel-2 (S-2) data during the wheat anthesis phase. The main outcome showed a significant correlation of NDVI variability to soil colloidal status and to the relative quantity in the exchange complex of the Ca2+ ions. No relationship emerged between NDVI and soil macronutrients (nitrogen, phosphorus, and potassium) concentration. The work suggested that such elements (nitrogen, especially) should not be provided solely considering the vegetation index spatial variations. Rational and sustainable management of soil fertility requires the integration of the NDVI data with the whole complex of soil physical/chemical status. In this way, the identification of the real key factors of fertility will avoid the negative impact of overfertilization. As an example, a fertilization plan was simulated for the sunflower–wheat sequence. The results showed that in the study area additional supplies of N and K would be unnecessary.

scholarly journals Valuing Waste – A Multi-method Analysis of the Use of Household Refuse from Cooking and Sanitation for Soil Fertility Management in Tanzanian Smallholdings

2020 ◽  
pp. 91-122
Author(s):  
Ariane Krause
Keyword(s):  
Soil Fertility ◽  
Crop Productivity ◽  
Available Phosphorus ◽  
Agricultural Activity ◽  
Biogas Slurry ◽  
Soil Fertility Management ◽  
Soil P ◽  
Fertility Management ◽  
Human Excreta ◽  
Sub Saharan

AbstractThe starting point of this work is the intention of two farmers’ initiatives to disseminate locally developed and adapted cooking and sanitation technologies to smallholder households in Karagwe District, in northwest Tanzania. These technologies include improved cooking stoves (ICSs), such as microgasifiers, and a system combining biogas digesters and burners for cooking, as well as urine-diverting dry toilets, and thermal sterilisation/pasteurisation for ecological sanitation (EcoSan). Switching to the new alternatives could lead to a higher availability of domestic residues for soil fertility management. These residues include biogas slurry from anaerobic digestion, powdery biochar from microgasifiers and sanitised human excreta from EcoSan facilities. Such recycling-driven approaches address an existing problem for many smallholders in sub-Saharan Africa, namely, the lack of soil amenders to sufficiently replenish soil nutrients and soil organic matter (SOM) in soils used for agricultural activity. This example from Tanzania systematically examines the nexus of ‘energy-sanitation-agriculture’ in smallholder farming systems. The short-term experiments demonstrated that all soil amenders that were analysed could significantly enhance crop productivity. CaSa-compost – the product of co-composting biochar with sanitised human excreta – quadrupled grain yields. The observed stimulation of crop yield and also plant nutrition is attributed to improved nutrient availability caused by a direct increase of soil pH and of plant-available phosphorus (P) in the soil. The assessment of the lasting soil implications revealed that CaSa-compost and biogas slurry both show the long-term potential to roughly double yields of maize. Corresponding nutrient requirements can be adequately compensated through residue capturing and subsistence production of soil amenders. The potential of CaSa-compost for sustainable soil fertility management is superior to that of standard compost, especially with respect to liming, replenishing soil P and restoring SOM. Biogas slurry, however, yields inferior results in all aspects when compared to compost amendments.

scholarly journals Effects of Organic and Inorganic Fertilizers Applications Levels on Greenhouse Tomato (Solanum lycopersicum) Yield and Soil Quality in Khost Province

2021 ◽  
pp. 1-10
Author(s):  
Rahmatullah Hashimi ◽  
Hukum Khan Habibi
Keyword(s):  
Soil Fertility ◽  
Soil Quality ◽  
Block Design ◽  
Organic Fertilizer ◽  
Nutrient Status ◽  
Organic Fertilizers ◽  
Control Treatment ◽  
Inorganic Fertilizers ◽  
Tomato Yield ◽  
Organic And Inorganic Fertilizers

The study was carried out to determine the effect of organic and inorganic fertilizers on tomato yield and soil quality.  The study was performed in a randomized complete block design consisting of 7 treatments with 3 replications in the research farm, Shaikh Zayed University, Khost, Afghanistan. The fertilizers treatments were T1, organic fertilizer (5 t/ha); T2, organic fertilizer (10 t/ha); T3, urea (150 Kg/ha); T4, urea (200 Kg/ha); T5, mixed fertilizers (organic fertilizer 3 t/ha + urea (100 Kg/ha); T6, mixed fertilizers (organic fertilizer 6 t/ha + urea (70 Kg/ha) and T7 a control. Results indicate that applications of inorganic fertilizers with a combination of organic fertilizers increased tomato yield and improves the nutrient status of the soil. T5 showed the highest yield of tomato and followed by T4 treatment, which were 33.1 and 31.7 t/ha respectively. The lower yield were obtained in T7 and T1 treatments. The highest plant heights (205.0 and 199.0 cm) were obtained in T5 and T4 respectively, while the lowest plant heights were obtained in T1 treatment and followed by T7 treatment. Similarly, we found that a combination of both inorganic and organic fertilizers application also is the best strategy to improve soil nutrients, maintain soil fertility. Soil P2O5 and K2O, where the highest amounts were obtained in T5 and followed by T6, which were 26.5, 22.5 and 44.5 and 41.5 mg/L respectively. The control treatment had the lowest amount of P2O5 and K2O. Therefore, this study suggests that an appropriate amount of organic fertilizer with inorganic fertilizer not only increased tomato yield but also improve soil fertility.

Effects of vermicomposts on tomato yield and quality and soil fertility in greenhouse under different soil water regimes

2015 ◽  
Vol 160 ◽  
pp. 98-105 ◽  
Author(s):  
Lijuan Yang ◽  
Fengyan Zhao ◽  
Qing Chang ◽  
Tianlai Li ◽  
Fusheng Li
Keyword(s):  
Soil Fertility ◽  
Soil Water ◽  
Water Regimes ◽  
Tomato Yield ◽  
Yield And Quality

Concentrated biogas slurry enhanced soil fertility and tomato quality

2010 ◽  
Vol 60 (3) ◽  
pp. 262-268 ◽  
Author(s):  
Fang-Bo Yu ◽  
Xi-Ping Luo ◽  
Cheng-Fang Song ◽  
Miao-Xian Zhang ◽  
Sheng-Dao Shan
Keyword(s):  
Soil Fertility ◽  
Biogas Slurry ◽  
Tomato Quality

Digital imaging and quantitative image analysis of polymer blends

1996 ◽  
Vol 54 ◽  
pp. 170-171
Author(s):  
Xiao Zhang
Keyword(s):  
Digital Imaging ◽  
Imaging Techniques ◽  
Imaging Systems ◽  
Polymer Science ◽  
Key Factors ◽  
Multiple Imaging ◽  
Quantitative Image ◽  
Digital Imaging Systems ◽  
Multi Phase ◽  
Network Technologies

Polymer microscopy involves multiple imaging techniques. Speed, simplicity, and productivity are key factors in running an industrial polymer microscopy lab. In polymer science, the morphology of a multi-phase blend is often the link between process and properties. The extent to which the researcher can quantify the morphology determines the strength of the link. To aid the polymer microscopist in these tasks, digital imaging systems are becoming more prevalent. Advances in computers, digital imaging hardware and software, and network technologies have made it possible to implement digital imaging systems in industrial microscopy labs.

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