scholarly journals Assessment of fertility potential index of some soils of Moheshkhali betel leaf (Piper betle L.) estate

Author(s):  
S Chowdhury ◽  
D Chakraborty ◽  
MK Rahman

Fifteen soil samples (0-15cm depth) and fifteen betel leaf samples from Bara Moheshkhali, Choto Moheshkhali, Hoanak, Kalmarchora, Shaplapur union of Moheshkhali upazila, Cox’s Bazar district were collected on December-January (2020-2021). It was collected for the purpose of evaluating the color, particle density, moisture content, texture, pH, EC and organic matter content of soils and total nitrogen, phosphorous, potassium and sulfur of the soils and total protein content, nitrogen, phosphorus, potassium and sulfur of leaves. Maximum sampled soil was containing yellowish red color when moist and showed brown color when dried. Some of them were flood plain soil and that’s why showed grey color during dry and moist condition. Mean particle density was 2.49 g/cm3 and mean moisture content was 13.95%. Average sand, silt and clay were 65.08%, 18.56% and 19.26%, respectively. The texture of the soils was sandy loam to clay loam. The sand was by far the dominant fraction in the soils. Mean pH value was 5.63, organic matter was 0.30% and EC was 99.38μS/cm. Mean total nitrogen, phosphorus, potassium and sulfur of the soils were 0.04, 0.46, 0.25 and 0.26%, respectively. The mean concentration of protein, nitrogen, phosphorus, potassium and sulfur in the betel leaf samples were 20.56, 3.29, 0.39, 0.79 and 0.20%, respectively. This investigation focuses on the fertility status and physico-chemical properties of soil in betel leaf garden of only hilly island of Bangladesh, Moheshkhali. J. Biodivers. Conserv. Bioresour. Manag. 2021, 7(1): 25-32

2006 ◽  
Vol 37 (7-8) ◽  
pp. 939-943 ◽  
Author(s):  
Marcos Gervasio Pereira ◽  
Ademar Espindula ◽  
Gustavo Souza Valladares ◽  
Lúcia Helena Cunha dos Anjos ◽  
Vinícius de Melo Benites ◽  
...  

2020 ◽  
Author(s):  
Liqun Tang ◽  
Zhijie Shan ◽  
Yang Yu

<p>Re-vegetation has been widely carried out to prevent land degradation, reduce soil erosion, and improve soil quality. In order to investigate the characteristics of soil nutrients content in different land use types of karst gabin basin, soil organic matter, soil total nitrogen, soil total phosphorus, soil total potassium, soil pH, and soil texture in woodland, agricultural land, orchard, and grassland were surveyed in Mengzi Gabin Basin, Southwest of China. The difference of soil indicators between vegetation types was analyzed, and soil fertility quality of four land use types was comprehensively evaluated by the soil quality index (SQI). The results showed that land use significantly affected soil organic matter content. Soil organic matter content was the highest in grassland, followed by agricultural land and forest land, while orchard was lowest. There was a significant difference in soil total nitrogen content between different land uses. The total nitrogen content in farmland soil was the highest, followed by grassland and woodland, and the lowest in the orchard. Woodand had the highest total potassium content and the lowest total phosphorus content. The grassland soil had the highest total phosphorus content and the lowest total potassium content. pH value in the four land use types was acidic, ranged from 5.82 to 6.67. The soil quality index showed that woodland had the highest soil fertility quality. The results of the study could provide the basis of soil nutrients variation and status in Gabin basin, and also provides support for evaluating the soil improvements during vegetation restoration in fragile Karst ecosystems.</p>


2020 ◽  
Vol 29 (2) ◽  
pp. 155-163
Author(s):  
Sk Musfiq Us Salehin ◽  
Gazi Md Mohsin ◽  
Tabassum Ferdous ◽  
Jobaed Ragib Zaman ◽  
Md Jashim Uddin ◽  
...  

Twenty soil and leaf samples from 20 orchards of mango (Mangifera indica L.) were collected from different locations of Rajshahi and Satkhira regions to evaluate soil texture, pH, organic matter, available and total nitrogen, phosphorus, potassium and sulfur of soils and the concentration of N and K in mango leaves. The pH of the soil varied from 6.3 - 7.9 and organic matter content varied from 0.72 - 3.60 per cent. The available nitrogen, phosphorus, potassium, and sulfur of the soils ranged from 190 - 510, 39 - 196, 36 - 206 and 25 - 235 mg/kg, respectively. The values of total N, P, K and S were 0.03 - 0.12, 0.022 - 0.210, 0.235 - 0.0.936 and 0.005 - 0.266 per cent, respectively. The dominant soil textural class was silty clay loam. The mean concentration of nitrogen (0.88%) and potassium (0.61%) in the leaf sample was low. The overall fertility status of the soils of Rajshahi and Satkhira regions in relation to mango cultivation is moderate. Dhaka Univ. J. Biol. Sci. 29(2): 155-163, 2020 (July)


2004 ◽  
Vol 6 (2) ◽  
pp. 46-50
Author(s):  
Kukuh Murtilaksono ◽  
Enny Dwi Wahyuni

This research was conducted to study relationship between soil moisture content and soil physical characteristics that affected the moisture.The soil samples were collected from 22 scattered sites of West Java and Central Java. Analysis of soil physical properties (texture, bulk density, particle density, total porosity and soil moisture retention) and soil chemical property (organic matter) was conducted at the laboratory of Department of Soil Sciences, Faculty of Agriculture, Bogor Agricultural University. Analysis of simple linier regression was applied to know the correlation between soil moisture content and other basic soil physical properties.Availability of soil moisture (pF 4.20 – pF 2.54) significantly correlated with organic matter, total porosity, and micro pores. The higher organic matter content as well as total porosity and micro pores the higher available soil moisture. Soil moisture of field capacity significantly correlated with clay content, sand content, micro and macro pores. The higher clay content and micro pores the higher soil moisture of field capacity. In the contrary, the higher macro pores and sand content the lower the field capacity. Soil moisture of wilting point significantly correlated with clay content and macro pores. The higher clay content the higher the wilting point, while the higher macro pores the lower soil moisture of wilting point. Keywords : Available soil water, field capacity, organic matter, soil pores, wilting point


Author(s):  
Д.А. Данилов ◽  
А.В. Жигунов ◽  
Б.Н. Рябинин ◽  
А.А. Вайман

Используя потенциальное плодородие посагрогенных почв, можно выращивать целевые древесные насаждения и получать балансовую и товарную древесину в более короткие сроки, чем на землях лесного фонда. Проблематика данного вопроса мало исследована и в настоящее время необходимо оценить перспективность выращивания насаждений высокой продуктивности на постагрогенных. Целью проведённого исследования было сравнение лесных и постагрогенных почв по таким параметрам, как содержание углерода органического вещества и общего азота, для прогнозирования перспективности организации хозяйства с ускоренным выращиванием продуктивных древесных насаждений на залежных землях. На постагрогенных и лесопокрытых землях были подобраны площади со сходными условиями почвообразования под спелыми древостоями, относящихся к типам леса: черничник, кисличник и дубравнотравный и почвенными комплексами постагрогенных залежных земель. Проводилась оценка ряда физико-химических показателей почв по общепринятым в почвоведении методикам: определялся гранулометрический состав, плотность сложения и мощность генетических почвенных горизонтов. Плотность сложения всех горизонтов оценивалась по Качинскому; определение углерода проводилось сухим озолением, общего азота по Кьельдалю, рН солевой вытяжки потенциометрическим методом.Анализ запасов углерода органического вещества (Сорг) и азота (Nобщ) в генетических горизонтах почв черничного, кисличного и дубравнотравного типов леса показывает увеличение содержания органического вещества и общего азота от черничного к дубравнотравному типу леса. Происходит снижение содержания органического углерода от гумусового горизонта к оподзоленному: в дубравнотравных типах леса – в 2,8; кисличных – в 7,6; в черничных – в 8,5 раз. Возобновление на постагрогенных землях носит куртинный характер или происходит по микро понижениям бывших борозд. Содержание органического вещества в пахотном горизонте данных участков постагрогенных земель находится на уровне кисличного типа леса. Содержание общего азота в данных почвах высокое от 5 до 7,4 т/га – на уровне дубравнотравного типа леса. Отношение С:N, которое характеризует обогащенность гумуса азотом, для большинства гумусовых горизонтов почв составляет 8–10, что отвечает высокой и средней степени обеспеченности этим элементом. По содержанию Сорг и Nобщ в верхнем горизонте почвы образуют следующий убывающий ряд: травяно-дубравный тип леса > залежные земли > кисличный тип леса > черничный тип леса > пашня. Проведённый сравнительный анализ физического и агрохимического состояния постагрогенных и лесных почв показал, что несмотря на предшествующее антропогенное воздействие, агрозёмный горизонт сохраняет высокое содержание органического вещества и общего азота. Ухудшение свойств постагрогенных почв на исследуемых участках не происходит и трансформации в сторону природных лесных почв региона не наблюдается, несмотря на длительный период залежности (свыше 30 лет). Соотношение углерода и азота в постагрогенных почвах по почвенному профилю показывает более высокое плодородие, чем в лесных почвах, где показатель С:N оптимален только части горизонта А1. Оценивая пригодность обследованных участков залежных земель на предмет ускоренного выращивания различных древесных пород для получения биомассы, можно констатировать, что уровень содержания органического вещества и общего азота превышает или соответствует условиям произрастания по IA –I классу бонитета для региона исследования. Using potential fertility mosagrogen soil you can grow of target woody plants and to balance and marketable timber in a shorter time than in the lands of the forest Fund. The problem of this issue is little investigated and now it is necessary to assess the prospects of growing high productivity plantations on postagrogenic. The aim of the study was to compare forest and postagrogenic soils in such parameters as the carbon content of organic matter and total nitrogen, to predict the prospects for the organization of the economy with the accelerated cultivation of productive tree plantations on fallow lands. In postagrogenic and wooded land were selected in the area with similar conditions of soil formation under ripe forest stands belonging to the forest types: myrtillus, oxalis and quercus-herbosa and postagrogenic soil complexes of fallow lands. Conducted assessment of some physico-chemical parameters of soil common in soil science methods: determined particle size distribution, the density of the composition and power of the genetic soil horizons. The density of addition of all horizons was estimated by Kaczynski; determination of carbon was carried out by dry ashing, total Kjeldahl nitrogen, pH salt extraction by the potentiometric method. Analysis of carbon stocks of organic matter (С) and nitrogen (N) in the genetic horizons of soils of blueberry, acidic and oak-grass forest types shows an increase in the content of organic matter and total nitrogen from blueberry to oak-grass forest type. There is a decrease in the content of organic carbon from the humus horizon to the ashed one: in quercus-herbosa forest types – 2.8, acidic – 7.6, myrtillus – 8.5 times. The postagrogenic restoration to the land is curtains character or occurs at the micro depressions of the former furrows. The organic matter content in the arable horizon of postagrogenic parcel of land be at the level of parents type of the wood. The content of total nitrogen in these soils is high from 5 to 7.4 t/ha – at the level of oak-grass forest type. The ratio C: N, which characterizes the enrichment of humus nitrogen, for most humus horizons of soils is 8-10, which corresponds to a high and medium degree of security with this element. According to the content of weeds and Communities in the upper horizon of the soil form the following decreasing series: quercus-herbosa type forest > lands >forest oxalis type > myrtillus type forest > arable land. Comparative analysis of physical and agrochemical condition of postagrogenic and forest soils showed that, in spite of previous anthropogenic impact, agronomy horizon maintains a high organic matter content and total nitrogen. Deterioration of the properties of postagrogenic soils in the study areas does not occur and transformation in the direction of natural forest soils of the region is not observed, despite the long period of occurrence (over 30 years). The ratio of carbon and nitrogen in postagrogenic soils by soil profile shows a higher fertility than in forest soils, where the indicator C:N is optimal only part of the horizon A1. Assessing the suitability of the surveyed areas of fallow lands for the accelerated cultivation of different species of wood to produce biomass, it can be stated that the level of organic matter and total nitrogen exceeds or corresponds to the conditions of growth in Ia –I class of bonitet for the region of the study.


2018 ◽  
Vol 53 ◽  
pp. 03057
Author(s):  
Xinyu Liu ◽  
Shengxiu Li ◽  
Fang Luo ◽  
Yan Ning ◽  
Biao Huang ◽  
...  

The content of nitrogen, phosphorus, potassium and organic matter in soil is an important index to determine soil nutrient status. In this paper, the contents of nitrogen, phosphorus, potassium, organic matter and soil salt in the soil of several different plant communities in the campus were measured by the chemical measurement characteristics of several different communities in University of Jinan. The differences in the measurement characteristics of soil chemical measurement in different plant communities were analyzed. The results showed that the highest organic matter content in several communities was Cherry Blossom community, 76.33mg/kg, and the highest ammonium nitrogen content was 196.08mg/kg; the highest content of available phosphorus was the community of Begonia, 168.14mg/kg, and the highest content of available potassium was the community of Robinia pseudoacacia, which was the highest salt content in 64.99mg/kg soil. The community of cherry blossoms is 569 μs. There was little difference in soil organic matter, available phosphorus and available potassium in different plant communities..


2018 ◽  
Vol 15 (2) ◽  
pp. 93-102
Author(s):  
MB Hossain ◽  
KS Ryu

A Greenhouse experiment was conducted to identify the suitable dose of organic fertilizer for lettuce production. Different doses of organic fertilizer (6.5, 13 and 26 t ha-1) and the recommended dose of chemical fertilizer (RDCF) as standard were selected for this experiment. Application of 13 t ha-1 organic fertilizer significantly increased leaf size (length and breadth) of lettuce. This treatment also increased 14, 25, 21, 32, 24, 27, 36 and 168% fresh weight, dry weight, N, P, K, Ca, Mg & Na uptake over RDCF, respectively. Organic matter content was increased of 17.79, 43.82 and 89.89% in 6.5, 13 and 26 t ha-1 organic fertilizer treated plots respectively over recommended dose of chemical fertilizers. Data also indicated that organic fertilizer @ 26 t ha-1 resulted in significant increase in pH, total nitrogen (24%), organic matter (90%) and Zn (29%) compared to RDCF and decreased electrical conductivity, mineral nitrogen (NH4 +-N & NO3 --N) and cadmium and lead (Cd & Pb) in soil. Positive and significant correlation was observed on yield and yield attributes of lettuce and soil nitrogen, organic matter with pH, total nitrogen with mineral nitrogen and negative correlation was found with applied organic fertilizer with cadmium and lead. Based on these results, organic fertilizer @ 13 t ha-1 without chemical fertilizer could be recommended to increase lettuce yield as well as mitigate heavy metals in soil.SAARC J. Agri., 15(2): 93-102 (2017)


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