يعرض 1 - 10 نتائج من 9,375 نتيجة بحث عن '"Plant production"', وقت الاستعلام: 0.86s تنقيح النتائج
  1. 1

    المصدر: Agronomy for Sustainable Development. 44(2)

    الوصف: Plant production systems worldwide are struggling to meet the diverse and increasing needs of humankind while also facing challenges such as climate change and biodiversity loss. This, combined with the desirable transition from the use of conventional pesticides to more sustainable plant protection solutions, has led to an urgent, and increasing, need for low-risk plant protection products (PPPs) to be developed, applied, and integrated into management practices across all types of plant production systems. Despite a high demand from end users and consumers together with joint political goals at the EU level to replace conventional pesticides, the number of low-risk PPPs on the European market remains low, in comparison to synthetic agrochemicals. In this review, we summarize knowledge about the policy, technical, and administrative issues hampering the process of bringing new low-risk PPPs to the European market. We present an overview of the challenges in using the low-risk PPPs that are currently available within the EU agricultural, horticultural, and forestry sectors. We describe the variation in modes of action and the limitations associated with different application techniques and give concrete examples of problems and solutions from Swedish plant production sectors, in contrast to global perspectives as demonstrated by examples from African agriculture. Finally, we conclude that trans-sectoral, multi-actor approaches are required and provide suggestions on how to address the remaining knowledge gaps related to efficiency, application, and economics of low-risk PPP use in Integrated Pest Management (IPM) solutions for plant protection to improve future food security in Europe.

    وصف الملف: electronic

  2. 2
    دورية أكاديمية

    المصدر: International Journal of Energy Economics and Policy, Vol 14, Iss 4 (2024)

    الوصف: Within food supply chains, attention is paid to the significant energy consumption at the farm gate level. In agricultural production, the energy intensity of animal production is much higher than that of plant production, but mainly if physical units are considered. This study examines the energy intensity of food production in Poland from 2010 to 2019, contrasting animal and plant production in both physical and monetary units. Utilizing the EXIOBASE database, it compares energy consumption across wheat, sugar beets, pig, and poultry farming sectors, addressing the gap in research on energy intensity within these individual sectors. The research reveals that, contrary to physical unit measurements, the energy intensity in monetary terms is lower for animal production than for plant production. Specifically, plant production showed higher energy intensity, averaging 28.02 MJ/€1 GDP for wheat and 30.15 MJ/€1 GDP for sugar beets. In contrast, animal production had higher energy intensity when measured by physical units, with pigs and poultry averaging 15.72 MJ/kg and 15.36 MJ/kg, respectively. These disparities arise primarily from the greater profitability of animal production, impacting the results per monetary unit. The findings underscore the importance of including economic aspects in energy intensity measurements, influencing agricultural producers' decisions.

    وصف الملف: electronic resource

  3. 3
    دورية أكاديمية

    المصدر: Ciencia y Tecnología Agropecuaria, Vol 25, Iss 1 (2024)

    الوصف: Using large volumes of synthetic chemical fertilizers is a general practice in modern agriculture at a high economic and environmental cost. Biostimulants have become an alternative to this routine due to their ability to stimulate plant physiological processes without polluting soil and water. In Ecuador, however, little research has been carried out on the effect of biostimulants on the yield of crops of agricultural interest. The objective of this research was to determine the effect of foliar application of a biostimulant based on bovine manure vermicompost (VCLB) leachates on physiological variables and the yield of corn, cotton, and peanuts under field conditions and chard and five pepper hybrids in semi-protected cultivation under the agro-climatic conditions of the province of Manabí, Ecuador. The nine experiments carried out with the species and hybrids included various dilutions of VCLB and controls consisting of fertilization with nitrogen, phosphorus, and potassium, depending on the species, and soil without fertilizer. In all species, VCLB-induced plant length, chlorophyll content, and crop yield exhibit equal or higher statistical differences than those achieved under chemical fertilization (NPK). These results demonstrate the potential of this biostimulant as a sustainable alternative to produce these crops, reducing potentially the adverse effects of production on the environment under the tropical conditions of Manabí, Ecuador. We recommend corroborating these results with production-scale research.

    وصف الملف: electronic resource

  4. 4
    دورية أكاديمية

    المصدر: Scientia Agricola, Vol 81 (2024)

    الوصف: ABSTRACT Previous cultivation of sorghum (Sorghum bicolor), Congo grass (Urochloa ruziziensis), and palisade grass (Urochloa brizantha cv. ‘Marandu’) may influence soybean (Glycine max) agronomic performance. The present work evaluated the decomposition of sorghum, grass, and sorghum intercropped with grass in the off-season to improve soybean yield in integrated crop systems in the Brazilian Cerrado and their dry matter production. This study was conducted in Planaltina, DF, in Central-West Brazil, on a Typical Acrustox soil from Mar 2010 until Feb 2012. The experimental design was a randomized block, with six crop systems before soybean: fallowing, sorghum, palisade grass (alone or intercropped with sorghum), and Congo grass (alone or intercropped with sorghum) with four replicates. Soybean agronomic performance, the crop systems’ dry mass, and its decomposition rate were estimated over two years. Higher soybean grain yields were observed in cropping systems including Congo grass alone (3,349 kg ha–1) or intercropped with sorghum (3,317 kg ha–1). Sorghum intercropped with palisade grass produced 18,702 kg ha–1 of dry matter and 64.9 % (on average) of soil coverage during the soybean cycle. However, the highest lignin content was observed in sorghum intercropped with Congo grass (5.1 % on average). The results indicate that the cultivation of Congo grass, either alone or intercropped with sorghum, improves the agronomic performance of soybean in succession, compared to sorghum alone or palisade grass (alone or intercropped with sorghum). The intercropped systems provided the best nutrient efficiency use aiming at sustainable agriculture in the Cerrado region.

    وصف الملف: electronic resource

  5. 5
    دورية أكاديمية

    المصدر: Die Bodenkultur, Vol 74, Iss 1, Pp 35-48 (2023)

    الوصف: Climate change scenarios predict more frequent and intense drought periods for 2071–2100 in the most important and intensively used agricultural region of Austria, the Marchfeld. Current and predicted lower precipitation scenarios were simulated at a lysimeter station for 9 years. Plant biomass, nitrogen (N) and carbon (C) content, and δ13C and δ15N values of plant compartments were monitored in years 7–9. Aboveground biomass of cereals and grain yield decreased under the predicted scenario, while the quality of grain (% N) was unaffected. Weed and catch crops grown in winter were not affected or were even positively affected, possibly due to the accumulation of nutrients in the soil following the lower plant uptake in summer. Accordingly, low plant δ15N values were mainly attributed to the presence of higher proportion of mineral fertilizer in the predicted precipitation scenario. As expected, water stress significantly increased δ13C values in plants grown over summer, while this was not seen for plants growing over winter. Fertile agricultural soil might ameliorate but cannot outbalance the negative impact of more frequent and intense drought periods.

    وصف الملف: electronic resource

  6. 6
    دورية أكاديمية

    المصدر: Journal of Water and Land Development, Iss No 58, Pp 243-252 (2023)

    الوصف: The depletion of natural resources such as freshwater and cropland makes it necessary to find a new solution for sustainable food production. Aquaponic systems seem to be a great alternative to traditional agriculture, however, there are still many unknowns that need to be explored. It is already known how fish stocking affects water quality in aquaponic systems, but not how it affects the plants’ growth, and especially on chlorophyll fluorescence. In this study, we examined how the density of 0, 2, 4, 8, and 16 stocking fish in five aquaria affects lettuce growth. The first tank was only a hydroponic system with plants but without fish (control). In the remaining four aquaria – 2, 4, 8 and 12 specimens of common carp fry with an average weight of 20 grams (average 8.5–33.2 g) were placed in the aquaponic growing system. Physicochemical analysis of water was conducted to determine the levels of pH, electrical conductivity ( EC), N-NO 3, N-NO 2, N-NH 4, P-PO 4, O 2 and physiological parameters of plants (nitrogen balance index – NBI, chlorophyll content index – CCI, quantum yield – QY, flavonoid content – Flv) were analysed. The results showed that fish stocking density has different effects on plant physiological parameters, but in most cases, was insignificant. It seems that the greater number of fishes and higher density indirectly causes growth inhibition (lower photosynthetic efficiency) due to the increase of N-NO 3 and a decrease of O 2 in the water.

    وصف الملف: electronic resource

  7. 7
    دورية أكاديمية

    المصدر: Acta Agrobotanica, Vol 76, Pp 1-13 (2023)

    الوصف: The sweet herb or ka'a he'ẽ in the Guarani language ( Stevia rebaudiana Bertoni) is a native plant of Paraguay, which produces a natural sweetener, 300 times sweeter than sucrose. The consumption of stevia has spread to numerous countries due to its beneficial properties for health. To meet the global demand for stevia, the production must be optimized through the use of improved varieties cultivated in different environmental conditions. This is an important fact, given the challenges related to climate change, such as salinity, opting for varieties that adapt to these conditions generates a positive impact on the dissemination of the crop. This research was aimed to determine the response of the Eirete variety of S. rebaudiana to saline stress conditions by evaluating selected biochemical and growth parameters. Vitroplants propagated in Murashige and Skoog culture medium (MS) supplemented with 0, 25, 50, 75, or 100 mM NaCl were used in the study to identify the concentration that reduced growth by 50% (GR50) and with 0, 50, 100, 150, and 200 mM NaCl to determine the concentration that caused the death of 50% of the individuals (LD50). After the evaluation of biochemical and growth parameters carried out at the dose corresponding to GR50, a significant decrease in the height, fresh and dry weight of the aerial parts, and fresh weight of the roots was found. Substantial increases in the proline concentration and the root/shoot ratio were also observed. There was no significant alteration of the dry weight of the roots and the content of soluble sugars or chlorophylls. Based on these results, it can be concluded that the development of vitroplants of S. rebaudiana var. Eirete is reduced by increasing concentrations of NaCl in the culture medium; however, our results suggest that stevia plants can be cultivated in moderate saline conditions.

    وصف الملف: electronic resource

  8. 8
    دورية أكاديمية

    المساهمون: Ministerio de Economía y Competitividad (España), European Commission, Conferencia de Rectores de las Universidades Españolas, Consejo Superior de Investigaciones Científicas (España), Arroyo, Antonio I., Pueyo, Yolanda, Alados, Concepción L.

    الوصف: © The Author(s) 2024. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0Test/. ; Rangeland-based livestock production constitutes a primary source of livelihood for many inhabitants of dryland regions. Their subsistence relies heavily on maintaining the productivity, biodiversity and services of these ecosystems. Harsh environmental conditions (e.g., drought) combined with land use intensification (e.g., overgrazing) make dryland ecosystems vulnerable and prone to degradation. However, the interplay between livestock grazing intensity and aridity conditions in driving the conservation and nutritional value of forage in arid and semi-arid rangelands is still not fully understood. In this study, we performed structural equation models (SEM) to assess the simultaneous direct and indirect effects of livestock grazing intensity and aridity level on community structure, diversity, biomass, forage production, forage C:N ratio and forage fiber composition in two semi-arid Mediterranean rangelands, NE Spain. Not surprisingly, we found that higher livestock grazing intensity led to lower community plant cover, especially when combined with higher aridity. However, both increasing grazing intensity and aridity were associated with higher forage ...

    وصف الملف: application/pdf

    العلاقة: #PLACEHOLDER_PARENT_METADATA_VALUE#; info:eu-repo/grantAgreement/MINECO//CGL-2016-80783-R; info:eu-repo/grantAgreement/EC/H2020/777803; Publisher's version; Arroyo, Antonio I.; Pueyo, Yolanda; Barrantes, Olivia; Alados, Concepción L.; 2024; Supplementary Information Interplay between Livestock Grazing and Aridity on the Ecological and Nutritional Value of Forage in Semi-arid Mediterranean Rangelands (NE Spain) [Dataset]; Springer Nature; https://doi.org/10.1007/s00267-024-01939-9Test; https://doi.org/10.1007/s00267-024-01939-9Test; Sí; Environmental Management 73(5): 1005-1015 (2024); http://hdl.handle.net/10261/362037Test

  9. 9
    دورية أكاديمية

    المساهمون: LPPM Universitas Muhammadiyah Jakarta

    المصدر: Jurnal Pengabdian Masyarakat Teknik; Vol 6, No 2 (2024): Jurnal Pengabdian Masyrakat Teknik (JPMT); 112-122 ; 2655-1446

    الوصف: Kegiatan ditujukan kepada warga yang memiliki kebun apotek hidup. Permasalahan yang dihadapi mitra adalah masalah rendahnya pengelolaan limbah rumah tangga di lokasi mitra dan kurangnya ketersediaan pupuk pada apotek hidup di lokasi mitra yang menyebabkan pertumbuhan tanaman obat tidak optimal. Kegiatan ini bertujuan untuk meningkatkan pengetahuan dan keterampilan tentang pemanfaatan limbah rumah tangga sebagai pupuk organik cair. Metode kegiatan terdiri dari 1) Penyuluhan pemanfaatan limbah rumah tangga untuk pupuk organik cair melalui media poster, 2) Pelatihan partisipatif pembuatan pupuk organik cair dari limbah rumah tangga dan 3) Pre-test dan post-test untuk mengukur indikator perubahan pengetahuan dan keterampilan partisipan. Kegiatan dilaksanakan pada tanggal 20 Agustus 2023 di Kompleks Villa Pamulang RT 009/012, Kelurahan Pondok Petir, Kecamatan Bojongsari, Kota Depok. Kegiatan penyuluhan dan pelatihan pengelolaan limbah rumah tangga untuk pupuk organik cair berjalan dengan lancar dilihat dari tercapainya indikator keberhasilan berupa: 1) meningkatnya pengetahuan dan keterampilan partisipan terhadap pengelolaan limbah rumah tangga untuk pupuk organik cair dengan peningkatan sebesar 21,75%, 2) pihak mitra memberikan penilaian memuaskan (baik dan baik sekali) dengan persentase kepuasan 92,5%, dan 3) beberapa partisipan langsung mempraktikkan sendiri proses pembuatan pupuk organik cair dari limbah organik rumah tangga setelah kegiatan selesai.

    وصف الملف: application/pdf

  10. 10
    دورية أكاديمية

    المؤلفون: Magó, László

    المصدر: POLJOPRIVREDNA TEHNIKA

    الوصف: Apstrakt: Ova studija analizira upravljanje mehanizacijom na farmama koje uzgajaju sirak kao usev otporan na efekat pojave suše, kao i sirovinu za proizvodnju obnovljive energije, pored žitarica i uljarica u klasičnom plodoredu, uzimajući u obzir ne samo terenske tehničke operacije već i logističke zadatke i troškove korišćenja mašina. Osim toga, uzete su u obzir i karakteristike rada mašine specifične za različite tehnologije proizvodnje na nivou farme. Može se zaključiti da je razlika između troškova malih i velikih farmi značajna. Ovo se sve može objasniti efikasnošću eksploatacije mašine. U oblasti troškova takođe postoji razlika između upotrebe savremenih i manje savremenih mašina. U slučaju male farme, korišćenjem manje modernih mašina za pogon može se postići povoljniji nivo troškova, iako se mora uzeti u obzir kvalitet rada i okolnosti rada. U slučaju velike farme, razlika između operativnih troškova manje modernih i modernijih mašina značajno se smanjuje, jer je rad manje modernih mašina skuplji pri većem opterećenju i visokim konstantnim troškovima modernih mašina. Troškovi mašine se značajno smanjuju, po njihovoj efikasnijoj eksploataciji, obzirom na usvojenu jedinicu rada.