Soil properties under different supplementary organic fertilizers in a restoration site after kaolin mining in the Eastern Amazon

2021 ◽  
Vol 170 ◽  
pp. 106352
Author(s):  
Sabrina Santos Ribeiro ◽  
Gustavo Schwartz ◽  
Arystides Resende Silva ◽  
Denis Conrado da Cruz ◽  
Alberto B. Brasil Neto ◽  
...  
2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Wei Hua ◽  
Peiyu Luo ◽  
Ning An ◽  
Fangfang Cai ◽  
Shiyu Zhang ◽  
...  

Abstract It is great of importance to better understand the effects of the long-term fertilization on crop yields, soil properties and nitrogen (N) use efficiency in a rotation cropping cultivation system under the conditions of frequent soil disturbance. Therefore, a long-term field experiment of 40 years under soybean-maize rotation was performed in a brown soil to investigate the effects of inorganic and organic fertilizers on crop yields, soil properties and nitrogen use efficiency. Equal amounts of 15N-labelled urea with 20.8% of atom were used and uniformly applied into the micro-plots of the treatments with N, NPK, M1NPK, M2NPK before soybean sowing, respectively. Analyses showed that a total of 18.3–32.5% of applied N fertilizer was taken up by crops in the first soybean growing season, and that the application of manure combining with chemical fertilizer M2NPK demonstrated the highest rate of 15N recovery and increased soil organic matter (SOM) and Olsen phosphorus (Olsen P), thereby sustaining a higher crop yield and alleviating soil acidification. Data also showed that no significant difference was observed in the 15N recovery from residue N in the second maize season plant despite of showing a lower 15N recovery compared with the first soybean season. The recovery rates of 15N in soils were ranged from 38.2 to 49.7% by the end of the second cropping season, and the residuals of 15N distribution in soil layers revealed significant differences. The M2NPK treatment demonstrated the highest residual amounts of 15N, and a total of 50% residual 15N were distributed in a soil layer of 0–20 cm. Our results showed that long-term application of organic fertilizers could effectively promote N use efficiency by increasing SOM and improving soil fertility, and thus leading to an increase in crop yields. This study will provide a scientific reference and guidance for improving soil sustainable productivity by manure application.


2021 ◽  
pp. 53-55
Author(s):  
Anjana P. A ◽  
Radhakrishnan V .V. ◽  
Mohanan K. V.

The response of brinjal plants to organic fertilizers and inorganic fertilizers under pot experiment investigated. This invivo experiment did in the Genetics and Plant Breeding Division of the Department of Botany, University of Calicut. Brinjal plants treated with three sources of organic fertilizers (vermicompost, groundnut cake and bonemeal), three sources of inorganic fertilizers (NPK 16:16:16, NPK 10:5:20 and urea) compared with control. The experimental design followed was a Randomized Complete Block Design (RCBD) with twenty-ve replicates. Soil properties were analyzed by collecting the soil from nine representative samples from each treatment. The soil parameters such as the pH, electrical conductivity (mhos/cm), total organic carbon (%), total organic matter, total nitrogen, phosphorus (kg/ha), potassium (g/ha), manganese, sulphur, iron, zinc, copper and boron were analyzed. The results showed that the macro and micronutrient availability increased in organic fertilizer treatments. Vermicompost increased soil properties signicantly. The percentage of organic carbon increased in organic fertilizer treatments. The same result showed in the case of total organic matter. Groundnut cake treatment gave the highest organic matter (4.75). Total nitrogen was highest in bonemeal (0.95) and potassium was highest in vermicompost (330kg/ha). Phosphorous (48.33kg/ha) and sulphur (43.1mg kg-1) were recorded highest in bonemeal. The highest values of trace elements (25 mg kg-1for Fe in groundnut cake; 0.96mg kg-1Cu, 14mg kg-1 Mn, 5.1mg kg-1 Zn and 0.98 mg kg-1 B in vermicompost observed. Therefore, 38% of the increase in iron, 17.0% off copper,14.75% increase in manganese, 2.82% increase in zinc and 20.99% increase seen in boron.


Author(s):  
Sayimbetov Alisher ◽  
Elemesova Nargiza Isataevna ◽  
Abdimuhammedalieva Indira Jumamuratovna

This article presents information about the importance of using composts prepared in different proportions nowadays to increase and maintain soil fertility. It is written about as a result of the usage and preparation of composts by mixing various organic wastes with phosphogypsum to improve and maintain soil fertility, a certain increase in humus in the soil, a decrease in soil capacity mass and an increase in porosity, the accumulation of nutrients in the soil provide an additional yield of 5-6 c / ha per hectare of cotton. KEYWORDS: soil, fertility, humus, soil properties, bulk density, porosity, compost, organic fertilizers, various wastes, cotton yield, yield.


2019 ◽  
Vol 70 (1) ◽  
pp. 169-173
Author(s):  
Elena Goldan ◽  
Valentin Nedeff ◽  
Ioan Gabriel Sandu ◽  
Emilian Mosnegutu ◽  
Mirela Panainte

The biochar used on agricultural land, can have a wide range of physical, chemical and biological effects on soil properties. Also cattle manure is important not only as the amount of nutrients inserted into the soil, but also for improving the conditions for growth and development of the plants. The positive effects on soil properties and plant growth are usually observed when biochar is used in mixture with other types of organic fertilizers. In this study, was used sewage sludge biochar, cattle manure compost, and mixtures made from these organic wastes in different concentrations, at application rates of 5 t/ha and 30 t/ha, with the aim of to determine the effects on soil properties and barley plants. The use of biochar, compost and biochar-compost mixtures at 30 t/ha, produced a significant increase of barley plants and an improvement of the pH, electrical conductivity and soil respiration, while at 5 t/ha application rate, the effect of this two organic wastes and mixtures of these in different concentrations, on plants growth and soil was reduced.


2020 ◽  
Vol 5 (01) ◽  
pp. 40-44
Author(s):  
Shree Prasad Vista ◽  
Dipak Kumar Jha

An experiment conducted to evaluate the influence of different organic manure on soil properties under glasshouse and open field condition at Khumaltar, Lalitpur during 2017-2018 showed insignificant results on major soil properties by the application of different organic manure under open and protected environmental condition at varying sampling days. The experiment was laid out in Complete Randomized Design (CRD) with three replications and six treatments viz. Vermicompost (VC) @ 10:1 gkg-1 of soil (T1), FYM @ 10:1 gkg-1 of soil (T2), Poultry Manure (PM) @ 10:1 gkg-1 of soil (T3), Safal Kishan (SK) @ 10:1 gkg-1 of soil (T4), Nepalese Organic Fertilizer (NOF) @ 10:1 gkg-1 of soil (T5) and Control (T6). Application of poultry manure and Safal kisan under glasshouse condition recorded higher organic matter (6.40 %) at 90 days and application of poultry manure under open condition at 30 days recorded higher total Nitrogen Content (0.53%). Application of vermicompost and poultry manure under open condition at 60 days have highest available Phosphorous content (381 kgha-1), whereas application of poultry manure under open condition at 60 days was observed having highest available potassium content (782 kgha-1) in the soil.


2016 ◽  
Vol 19 (2) ◽  
pp. 49-53
Author(s):  
Jana Šimečková ◽  
Jiří Jandák

Abstract Physical properties of soils are affected by many factors. These include the type of fertilizer used. An offer of fertilizers is currently extensive and new types are added, an example may be digestate, which is ranked among organic fertilizers according to Czech legislation. Changes in physical soil properties were monitored on a field trial, which were established on the place of Research grassland station Vatín (region Vysočina, the Czech Republic) in autumn 2013. The field trial comprised different variants of fertilization. Their effects were observed at different vegetation covers. In this paper, we focus on vegetation cover corn, fertilization variants: manure, mineral fertilizer (saltpetre ammonium with limestone) and digestate. The effect of fertilization was observed 3 times during the growing season 2014. It was in June, August and October. The results were obtained by the basic analysis of Kopecky rollers and it was from the depths of 0.05 m and 0.15 m (middle roller). The monitored soil properties were: bulk density, porosity, water retention capacity, maximum capillary water capacity and minimum air capacity. At all investigated physical soil properties there was a positive development during the growing season, with the exception of water retention capacity. The difference was found in the range of changes in various physical properties depending on the applied fertilizer.


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