scholarly journals The effects of Alginite fertilization on selected tree species seedlings performance on afforested agricultural lands

2017 ◽  
Vol 63 (1) ◽  
pp. 48-56
Author(s):  
Jan Cukor ◽  
Lukáš Linhart ◽  
Zdeněk Vacek ◽  
Martin Baláš ◽  
Rostislav Linda

AbstractAfforestation of marginal agricultural lands is an important issue in the land use changes running in Europe at present. The aim of the presented study is the documentation of effects of site improving material Alginite three years after afforestation of agricultural land in the locality with unfavourable hydrophysical regime. The impact was evaluated on growth parameters (height increment, mortality and foliar nutrient content) of Douglas fir (Pseudotsuga menziesii (Mirb.) Franco), Scots pine (Pinus sylvestris L.) and a mixture of English oak (Quercus robur L.), red oak (Quercus rubra L.) and Norway maple (Acer platanoides L.) seedlings on former agricultural land in central Bohemia, Czech Republic. The research plot consists of 36 square sub-plots, each sub-plot is 400 m2 in size. Each sub-plot consists of 400 individuals, except Douglas-fir with 200 individuals. The following doses of Alginite were applied: control (variant A without Alginite), 0.5 kg of Alginite (B) and 1.5 kg of Alginite (C) on both conifers and broadleaves. The results showed that Alginite application had greater positive effect on height growth of seedlings than mortality, especially variant C. In most of the cases height increments were significantly positively affected (p < 0.05) by both variants of Alginite application only in the third year after planting. Alginite applications were also connected with differences in the foliar nutrient content, especially with higher magnesium and phosphorus values. The highest differences among Alginite variants were observed for Norway maple and English oak, while the lowest for red oak and Scots pine within all monitored parameters.

Bioenergy ◽  
2021 ◽  
Author(s):  
Ya. D. Fuchylo ◽  
I. D. Ivaniuk ◽  
Ya. P. Makukh ◽  
V. Yu. Yukhnovskyi ◽  
S. O. Remeniuk ◽  
...  

Goal. Study of peculiarities of growing pine stands and prospects of their use in agroforestry of Zhytomyr Polissia on the example of agricultural lands of Malyn Vocational College. Methods. Field, laboratory, analytical, statistical. Results. On sod-podzolic sandy soils of Zhytomyr Polissia pine seedlings after three years of cultivation were 55.7 ± 3.43 cm in height. The maximum increase in height was observed during the third year of cultivation of the plantation, when at the beginning of the growing season with herbicide Targon Plus the impact of cereal vegetation reduced to a minimum, resulting in improved seedling growth conditions. The high preservation of pine plants and their intensive growth allow us to make optimistic forecasts about the feasibility of growing them as a forest component of agricultural landscapes, especially given the presence of biotically stable 15-year-old pine plantations created by similar agricultural techniques. They were laid at an initial density of 7.1 thousand seedlings per 1 ha, and later thinned to 2982 and 1691 plants/ha, respectively. With almost the same productivity indicators, higher tree height (by 17.0%) and larger average diameter (by 23.8%) allow thinner plantations to have a more positive impact on adjacent agricultural lands, grow more intensively and have higher productivity in the future. This indicates the expediency of pine plantations in the region of research as a forestry component of agrolandscapes a density at the age of 15 years of about 1700 trees per 1 ha.


2017 ◽  
Vol 1 (T4) ◽  
pp. 274-281
Author(s):  
Ve Ngoc Hoang ◽  
Thai Hong Tran

Climate change is occurring increasingly complex and unpredictable, therefore the phenomenon of saltwater intrusion at coastal areas is also increasingly serious. The saltwater intrusion threatens the production and life of people in Nghe An’s coastal areas. Our study used MIKE11, MIKE 21 and ArcGIS software to assess the effects of saltwaters intrusion on agricultural land. The results indicate that the agricultural lands in Nghe An’s coastal areas are at high hazards of saltwater intrusion. Cua Lo town is the most affected by the saltwater intrusion, typically with land for cultivation of perennial trees (BHK), paddy land (LUC, LUK), land for production forests (RST), and land for aquaculture (TSL) are at high risk from the base (with more than 90 % of the total land area).


Author(s):  
Kirill Teslenok ◽  
Anton Mushtaykin ◽  
Sergey Teslenok

The article highlights the stages of work during which the impact of individual terrain properties on arable farming was identified. The possibility of using digital elevation models (DEM) to identify those characteristics that can have a significant impact on such lands was studied. Findings have been made about the relationship between these features and the sites, and their place among other arable land features has been determined. The initial step was to select the baseline data for the area under study and obtain it in the form we needed. Here, techniques for automated DEM acquisition are being developed. At the next stage, individual terrain characteristics, complexity of their acquisition and ranking by importance for this methodology were considered and analyzed. At the final stage the analysis of agricultural lands, their connection with the relief and its characteristics was carried out, practical conclusions were drawn and recommendations were made based on them. It should be noted that the study area — the Vindrei River basin — is very illustrative for showing the advantages of the technology being developed. Its territory is occupied both by extensive agricultural land and forest areas. During the development of the methodology it was important to demonstrate the possibilities of using the technology in the field of nature management and improving economic efficiency of the area.


Agriculture ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 148
Author(s):  
Małgorzata Kozak ◽  
Rafał Pudełko

Agricultural land abandonment is a process observed in most European countries. In Poland and other countries of Central and Eastern Europe, it was initiated with the political transformation of the 1990s. Currently, in Poland, it concerns over 2 million ha of arable land. Such a large acreage constitutes a resource of land that can be directly restored to agricultural production or perform environmental functions. A new concept for management of fallow/abandoned areas is to start producing biomass for the bioeconomy purposes. Production of perennial crops, especially on poorer soils, requires an appropriate assessment of soil conditions. Therefore, it has become crucial to answer the question: What is the real impact of the fallowing process on soil, and is it possible to return it to production at all? For this purpose, on the selected fallowed land that met the marginality criteria defined under the project, physicochemical tests of soil properties were carried out, and subsequently, the results were compared with those of the neighboring agricultural land and with the soil valuation of the fallow land, which was conducted during its past agricultural use. The work was mainly aimed at analyzing the impact of long-term fallowing on soil pH, carbon sequestration and nutrient content, e.g., phosphorus and potassium. The result of the work is a positive assessment of the possibility of restoring fallowed land for agricultural production, including the production of biomass for non-agricultural purposes. Among the studied types of fallow plots, the fields where goldenrod (Solidago L.—invasive species) appeared were indicated as the areas most affected by soil degradation.


PLoS ONE ◽  
2021 ◽  
Vol 16 (1) ◽  
pp. e0245591
Author(s):  
Muhammad Basir-Cyio ◽  
Mahfudz ◽  
Isrun ◽  
Zeffitni

This research aims to determine the attitudes of the farmers whose lands are affected by liquefaction in Jono Oge, Central Sulawesi Province, The Republic of Indonesia. The methods used here were integrated survey and experimental design. The survey approach was intended to figure out the attitudes of the farmers viewpoints: (1) to return to their activities on the agricultural lands affected by liquefaction; (2) to consume their own agricultural products; and (3) of their willingness to be relocated. The experimental design approach was used to figure out the effectiveness of organic material input combined with the SP-36 fertilizer. The obtained results were analyzed using the Likert Scale, diversity test, correlational test, and regression test. The results showed that the farmers persevered farming on the lands affected by liquefaction (Index = 88.82%) yet refused to consume their own agricultural products with the reason that corpses remained buried beneath their lands (Index = 27.82%); and they also refused to be relocated (Index = 28.80%). The continued production suitability of the affected land was also investigated. Terrain profile identification results in Jono Oge showed the disaster impact was dominantly landslide as it still showed a clear characteristic horizon between the topsoil and the sub soil. This contrasts to terrain at Petobo, Central Sulawesi Province, where the high mix of the topsoil with the sub soil of agricultural land affected by liquefaction, prevented demarcation of the horizon. The land treatment of organic material and SP-36 fertilizer showed that the combined dose (M) of 40-kg ha-1 with P 300-kg ha-1 had the highest effect by changing the field pH from 5.7 to 6.41, increased the availability of P and increased the corncob indicator plant weight. Based on these indications, the lands affected by the liquefaction in Jono Oge can still be used as agricultural lands through restoration, from both social and technical aspects.


2021 ◽  
pp. 805-814
Author(s):  
V.V. Alakoz

The article examines the system of agricultural land use and the impact of its elements on in-country spatial heterogeneity, and the spatial development of agricultural land use in the regional aspect – the expansion or contraction of arable lands. The geographic space of the agricultural land use of a country, a macro-region, a region-component of the agricultural industry and the socio-economic system of life are quantitative and qualitative changes in the use of the existing potential of productive agricultural lands, an increase or decrease of their boundaries under the combined influence of social, economic, institutional and infrastructural elements of the agricultural land use system. Among the elements of this system that affect the expansion or contraction of the area and boundaries of agricultural land use and their quality condition: bioclimatic potential; the level of innovative development, agricultural technologies; access to land, finance, and sales markets; effective demand for agricultural products; availability of development institutions (land information systems, monitoring of land use, land management, cadastre, land valuation, land redistribution fund - land bank). Decisive importance is the quality of state regulation of land relations (land and tax legislation) and state management of land use, and the topic of this article - the quality and level of state support for agricultural activities. The harmonization of the components of the agricultural land administration system is decision which, how and how much apply one or another regulation factor of land relations – the mechanisms of market self-regulation or direct state regulation.


Author(s):  
Jan Vopravil ◽  
Pavel Formánek ◽  
Darina Heřmanovská ◽  
Tomáš Khel ◽  
Karel Jacko

In the Czech Republic, the afforestation of agricultural land has been supported by providing subsidies from the government and the European Union. Afforestation of less-productive agricultural land provides many benefits including carbon sequestration, soil erosion control, biodiversity, water retention, cooling, social benefits, decreasing noise and light pollution, increasing air quality, wind speed reduction, oxygen production, wood production and non-wood products. In some aspects, it is possible to produce wood of the same quality on former agricultural land compared to permanent forest land. In this study, we attempted to find out the course of temperatures and volumetric water content as well as some other physical soil properties (at depths of 20, 40 and 60 cm) 9 years after the afforestation of agricultural land (warm, mild dry region of the Czech Republic) with a mixture of broadleaved tree species (Quercus robur L., Quercus rubra L. and Acer platanoides L.) or monospecific Pinus sylvestris L. stand; the study was performed in the period from April to the beginning of November 2020. Concerning the studied physical soil properties, the value of bulk density was higher (and total porosity lower) at a depth of 20 cm in Pinus sylvestris L. compared with agricultural land or the mixture of broadleaves; the water stability of soil aggregates was higher after the afforestation with the mixture of broadleaves. The temperature was lower in the soil of afforested plots (at all studied depths) compared to the agriculturally used land. Differences in rainfall interception, transpiration, soil<br />(and forest floor) properties and other factors could influence the obtained values of water content in the soil of the studied plots. The average volumetric water contents were the highest in the plots with Scots pine (depth of 20 cm) and broadleaves (depth of 40 cm), and on the control plot (depth of 60 cm). The volumetric water content at a soil depth of 20 cm was not significantly (P &gt; 0.05) different when the plot with Scots pine and agriculturally used land were compared. In all other cases and depths, the differences between plots were significant (P &lt; 0.05).


Author(s):  
N. P. Ravindra Deyshappriya

Aims: This study examined the impact of agricultural landownership on poverty and food security in Sri Lanka. The current study enriches the literature by extending traditional two way poverty classification into four groups: Extremely Poor, Poor, Vulnerable Non-Poor and Non-Poor and quantifies the impact of agricultural landownership on each type of poverty. Similarly, the impact of agricultural landownership on food security is was also estimated considering the four types of food security such as, Extremely Food Insecure, Food Insecure, Vulnerable to Food Insecure and Food Secure, based on Minimum Dietary Energy Requirements. Methodology: The analysis is was based on the secondary data from the Household Income and Expenditure Survey (HIES) of Sri Lanka. Ordered Probit Models were estimated to examine the impacts of agricultural landownership on poverty and food security to accomplish the objectives of the study. Results: The results highlighted that the probability of being non-poor of the households with agriculture land is was higher by 6.42% compared to the households without agricultural lands. Similarly, having agriculture land also reduces the probability of being extremely poor, poor and vulnerable to poverty by 0.1%, 2.2% and 4.1% respectively. In addition, the empirical findings indicated that ownership of agricultural land lessens the probability of being extremely food insecure (0.8%), food insecure (1.4%) and vulnerable to food insecure (0.7%). Moreover, the probability of being food secured of thefor households with agricultural lands is was higher by 0.9% compared to the households without agricultural lands. Conclusion: Therefore, the study emphasized the significance of agricultural landownership to mitigate the poverty and food insecurity which ultimately enhances the household wellbeing. Hence, the current study strongly recommends implementing appropriate policies to address land-right related issues faced by developing countries ensuring long term wellbeing of the households.


1983 ◽  
Vol 13 (1) ◽  
pp. 122-125 ◽  
Author(s):  
Dan Binkley ◽  
Lynn Husted

Nutrient contents of soil and foliage of Douglas-fir (Pseudotsugamenziesii (Mirb.) Franco) saplings were determined in areas without redstem ceanothus (Ceanothussanguineus Pursh), at the edges of redstem ceanothus patches, and within patches. Tree growth was not examined. Total soil N (0–15 cm depth) was 50–75% greater at the edge of and within redstem patches than in areas without redstem. Assuming soil N was initially similar at all three positions, N accretion was 24–50 kg•ha−1•year−1 for 10 years. Total N accretion in the ecosystem was probably 45–80 kg•ha−1•year−1. Available N index and extractable Ca and Mg were 2–3 times greater at the edges of and within the redstem patches than outside them. Concentrations of N, Ca, and Mg in the Douglas-fir foliage were lowest outside the patches, intermediate at the edges, and highest within the patches. Because needle weight was lower for saplings within patches than for those at the edges, the latter had the greatest foliar nutrient content. Enhancement of site fertility by redstem ceanothus, as well as its benefits to wildlife and slope stability, make it an attractive candidate for mixed plantations with conifers.


2017 ◽  
Vol 10 (1) ◽  
pp. 121-127 ◽  
Author(s):  
I Kuneš ◽  
M Baláš ◽  
R Linda ◽  
J Gallo ◽  
O Nováková

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