The Impacts of Different Types of Slopes on Soil Fertility Movement of Harumanis Mango

2020 ◽  
pp. 23-35
Author(s):  
Sharifah Norashikin Bohari ◽  
Che Ahmad Redzuan Che Romeli ◽  
Norhanani Ahmad ◽  
Amirul Ikram Azmi ◽  
Nurul Ain Mohd Zaki ◽  
...  
Keyword(s):  
Soil Fertility ◽  
Different Types

scholarly journals Shortage of water in Teesta river basin and its impact on crop production in northern Bangladesh

2018 ◽  
Vol 15 (2) ◽  
pp. 113-123 ◽  
Author(s):  
ML Raihan ◽  
MA Sarker ◽  
MAM Miah
Keyword(s):  
Heavy Metal ◽  
Data Analysis ◽  
Soil Fertility ◽  
River Basin ◽  
Crop Production ◽  
Secondary Data ◽  
Water Shortage ◽  
Pests And Diseases ◽  
Different Types ◽  
The Impact

The objectives of the study were to (i) assess the extent of water shortage in the downstream of Teesta River Basin (TRB) areas; (ii) explore the problems associated with crop production due to water shortage in TRB areas and (iii) examine the impact of water shortage on crop production in TRB areas. The study was conducted in four villages under Nilphmari district during April, 2015. By secondary data analysis and farmers’ perception it was clear that water flow and discharge of Teesta river was decreasing significantly during the last 15 years. The major impact was the dramatic increase in costs of irrigation of major crops and ultimately rise in the costs of production and less profit from farming. All of the farmers (100%) opined that the irrigation costs of major crops have been increasing due to shortage of water. The cultivation of LWRC due to water shortage was also a major impact of water shortage on crop production. Farmers were concentrating more on cultivating maize, tobacco, wheat, different types of vegetables etc. compared to rice particularly in dry season. Different types of problems like increased amount of heavy metal in crop land due to continuous uplifting of ground water, decrease soil fertility, increase pests and diseases to crops, fallowing of high and medium high land, increase of fertilizer and pesticide costs etc. were affecting farmers severely in crop production.SAARC J. Agri., 15(2): 113-123 (2017)

scholarly journals Effect of Different Types of Fertilizer Application on the Soil Fertility of Oil Palm Reclamation Soil under Polyculture System

2020 ◽  
Vol 11 (2) ◽  
pp. 1-11
Author(s):  
Nur Amalina Mohd Ropi ◽  
Norfakhrina Mohd Noor ◽  
Ong Pei Ying ◽  
Mohd Helmi Nadri ◽  
Nor Zalina Othman ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Soil Fertility ◽  
Bulk Density ◽  
Soil Ph ◽  
Oil Palm ◽  
Fertilizer Application ◽  
Inorganic Fertilizer ◽  
Combine Application ◽  
Different Types

To evaluate the effect of different fertilizer application on soil fertility under polyculture cropping system (okra, water spinach and yard long bean), a field experiment was conducted in the oil palm reclamation soil at the research farm in ICA UTM-Pagoh. There were five treatments involved which were: (T1) no fertilizer, (T2) organic fertilizer, (T3) inorganic fertilizer, (T4) organic inorganic compound fertilizer and (T5) organic + inorganic fertilizer.  The initial and final soil samples were collected to study the effect of different types of commercial fertilizer application on soil pH, electrical conductivity (EC), moisture content, soil organic carbon (SOC), total nitrogen (TN), C/N ratio, soil organic matter (SOM), bulk density and nutrients (P and K) contents in the soil surface layer (0–15 cm) of the experimented site for 14 weeks. Results showed that the soil pH was the lowest with an average of 6.05 units in T5 and was significantly higher in T1 (8.23 units). The EC value in T5 is the highest with 172.4 ds/m and lowest in T1 with an average of 25.5 ds/m. T5 showed the highest soil moisture and soil organic matter with 15.81% and 4.01% respectively. The combine application of organic and inorganic fertilizers has increased SOC and TN values compared with the T1 (control) specifically, which resulted in 3.7% and 0.33% of SOC and TN concentrations, respectively (). Bulk density showed no significant different among all the treatment with the highest value was in T4 (1.22g/cm3) and lowest in T3(1.05g/cm3). The average amounts of C/N ratio ranged from 11.11 to 13.60 between all treatments with the highest ratio in T4 (13.6). The average P and K contents were highest in T5 (1564.7 mg/kg and 1056.2 mg/kg). Thus, it showed that the application with the mixture of organic and inorganic fertilizer (T5) improved the soil condition.

scholarly journals Evaluation of soil nutrient management practices of taro farmers in Taveuni, Fiji

2014 ◽  
Vol 32 (2) ◽  
pp. 61 ◽  
Author(s):  
Sofina Nisha ◽  
Surendra Prasad ◽  
Jagdish Bhati
Keyword(s):  
Soil Fertility ◽  
Management Practices ◽  
Nutrient Management ◽  
Low Cost ◽  
Soil Health ◽  
Soil Nutrient ◽  
Soil Fertility Management ◽  
Chemical Fertilizers ◽  
Fertility Status ◽  
Different Types

There is evidence that the soil health in Taveuni, Fiji is deteriorating over time threatening livelihoods of taro producers. The present study was conducted to understand the soil nutrient management practices followed by taro farmers in Taveuni. The study revealed that the farmers in Taveuni use various organic and chemical fertilizers and various other soil fertility management practices such as mulching, crop rotation with legumes, yagona and agroforestry. The quantity of nitrogen, phosphorous and potash (NPK) applied to taro crop on different types of soils was meager. The study further revealed that there was imbalanced and insufficient use of chemical fertilizers and organic sources of soil nutrients. The main cause of low use of fertilizers was that the farmers in Taveuni do not know the fertility status of their farms as no soil testing was ever done and majority of them are also not fully aware of various low-cost organic methods of maintaining soil fertility of farms.

scholarly journals Resistance Characteristics of Soil Fertility

2019 ◽  
Vol 2 ◽  
pp. 131-132
Author(s):  
Nofita Alfiani ◽  
Koddam Rukadi L ◽  
Frida Agung Rakhmadi
Keyword(s):  
Plant Growth ◽  
Soil Fertility ◽  
Manure Compost ◽  
Fertile Soil ◽  
Different Types ◽  
Important Indication

Fertile soil is an important indication to support plant growth. The more fertile a soil then plant growth, the better. In this study, the method used is to measure the resistance of different types of fertilizer are manure, compost. Because different forms of land then the resistance will also vary according to the shape of the land. The results obtained are cage fertilizer that has the smallest resistance is 39.7 Ω and 33.6 Ω whereas compost and 35.4 Ω 41.9 Ω. The benefits of this method were to determine the resistance or resistance from the ground. So the lower the ground obstacles, the more fertile the land. Conversely, the higher the resistance of the soil, the more the soil is not fertile.

scholarly journals Sorption properties of root systems as a criterion for adjusting soil fertility models

2021 ◽  
Vol 3 (45) ◽  
pp. 15-15
Author(s):  
Alexander Saakian ◽  
◽  
Keyword(s):  
Soil Fertility ◽  
Soil Properties ◽  
Plant Species ◽  
Nutrient Solution ◽  
Rice Variety ◽  
Root Systems ◽  
Sorption Properties ◽  
Fruit Crops ◽  
White Cabbage ◽  
Different Types

The paper evaluates the sorption properties of the root systems of rice, wheat, vegetable and fruit crops, and weeds in soils with optimal moisture, irrigation, and the development of anaerobiosis. It is shown that different types and varieties of crops differ in the sorption properties of the roots, which must be taken into account when adjusting the optimal soil properties and fertilizer doses. Thus, the ratio of Ca/Fe in the equilibrium nutrient solution was 72.6 under the rice variety "Liman"; 165.0 under the variety" Spalchik"; 222 under the weed prosyanka; 720 under the weed klubnekamysh. The ratio of Md/Ca, Ca/Mp and Ca/Zn in the non-equilibrium nutrient solution of Knopa (1:1) after growing seedlings was -17.4; 300.0 and 17.2, respectively, under cauliflower; 6.6; 53.9 and 8.7 under early white cabbage. It is proven, that the sorption properties of the root systems of plant species and varieties should be taken into account when adjusting the optima of soil properties and fertilizer systems for the planned crop, upon phytomelioration of soils. Keywords: ROOTS, SORPTION PROPERTIES, SOIL FERTILITY MODELS, FERTILIZER SYSTEMS

The extinction time of a general birth and death process with catastrophes

1986 ◽  
Vol 23 (04) ◽  
pp. 851-858 ◽  
Author(s):  
P. J. Brockwell
Keyword(s):  
Laplace Transform ◽  
Size Distribution ◽  
Sufficient Conditions ◽  
Necessary And Sufficient Conditions ◽  
Death Process ◽  
Extinction Time ◽  
Birth And Death Process ◽  
Different Types ◽  
The Laplace Transform ◽  
Necessary And Sufficient

The Laplace transform of the extinction time is determined for a general birth and death process with arbitrary catastrophe rate and catastrophe size distribution. It is assumed only that the birth rates satisfyλ0= 0,λj> 0 for eachj> 0, and. Necessary and sufficient conditions for certain extinction of the population are derived. The results are applied to the linear birth and death process (λj=jλ, µj=jμ) with catastrophes of several different types.

Differentiating between different forms of moral obligations

2020 ◽  
Vol 43 ◽  
Author(s):  
Rajen A. Anderson ◽  
Benjamin C. Ruisch ◽  
David A. Pizarro
Keyword(s):  
Moral Character ◽  
Moral Obligations ◽  
Different Types

Abstract We argue that Tomasello's account overlooks important psychological distinctions between how humans judge different types of moral obligations, such as prescriptive obligations (i.e., what one should do) and proscriptive obligations (i.e., what one should not do). Specifically, evaluating these different types of obligations rests on different psychological inputs and has distinct downstream consequences for judgments of moral character.

Ultrastructural Investigations of the Contractile Filaments of Amoebae

1974 ◽  
Vol 32 ◽  
pp. 188-189
Author(s):  
P.L. Moore
Keyword(s):  
Cytoplasmic Streaming ◽  
Three Dimensional ◽  
Freeze Fracture ◽  
Amoeboid Movement ◽  
Different Types ◽  
Chemical Conditions ◽  
Complete Interpretation

Previous freeze fracture results on the intact giant, amoeba Chaos carolinensis indicated the presence of a fibrillar arrangement of filaments within the cytoplasm. A complete interpretation of the three dimensional ultrastructure of these structures, and their possible role in amoeboid movement was not possible, since comparable results could not be obtained with conventional fixation of intact amoebae. Progress in interpreting the freeze fracture images of amoebae required a more thorough understanding of the different types of filaments present in amoebae, and of the ways in which they could be organized while remaining functional.The recent development of a calcium sensitive, demembranated, amoeboid model of Chaos carolinensis has made it possible to achieve a better understanding of such functional arrangements of amoeboid filaments. In these models the motility of demembranated cytoplasm can be controlled in vitro, and the chemical conditions necessary for contractility, and cytoplasmic streaming can be investigated. It is clear from these studies that “fibrils” exist in amoeboid models, and that they are capable of contracting along their length under conditions similar to those which cause contraction in vertebrate muscles.

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