Comparing wheat grown in South Australian organic and conventional farming systems. 1. Growth and grain yield

2003 ◽  
Vol 54 (9) ◽  
pp. 889 ◽  
Author(s):  
J. L. Kitchen ◽  
G. K. McDonald ◽  
K. W. Shepherd ◽  
M. F. Lorimer ◽  
R. D. Graham
Keyword(s):  
Grain Yield ◽  
Organic Farming ◽  
Farming Systems ◽  
Farming System ◽  
Water Soluble ◽  
Conventional Farming ◽  
Wheat Varieties ◽  
Organic Farming Systems ◽  
Conventional Systems ◽  
Organically Grown

Organic farming standards do not allow addition of water-soluble fertilisers and therefore it is likely that growth of organically grown crops will be limited by nutrient availability. However, in marginal rainfall conditions, when growth in conventional systems is limited by water availability, yields of organically grown crops could be comparable with those conventionally grown. Similarly, micronutrient-efficient plant varieties could be expected to perform comparatively better under organic farming conditions than they do in conventional systems, when compared with micronutrient-inefficient varieties.In this study, biomass and grain production of wheat from certified organic farming systems were compared with neighbouring conventional farming systems in 'across the fence' field trials in 1 moderate and 2 marginal rainfall areas of South Australia. Wheat varieties compared included 2 old wheat varieties developed under relatively low-input conditions (Baroota Wonder and Dirk-48) and varieties shown to be micronutrient-efficient (Janz and Trident) and inefficient (Yallaroi).The organic farming systems produced significantly less biomass than the conventional farming systems at late tillering in both the moderate and marginal rainfall areas. Grain yield was variable, but significantly lower in the organic farming system for 11 of the 14 comparisons. None of the varieties showed an adaptive advantage for 1 farming system over the other. The relative yield of the organic system, compared with the conventional system, was not associated with rainfall.

scholarly journals Effect of Low-Input Organic and Conventional Farming Systems on Maize Rhizosphere in Two Portuguese Open-Pollinated Varieties (OPV), “Pigarro” (Improved Landrace) and “SinPre” (a Composite Cross Population)

2021 ◽  
Vol 12 ◽  
Author(s):  
Aitana Ares ◽  
Joana Costa ◽  
Carolina Joaquim ◽  
Duarte Pintado ◽  
Daniela Santos ◽  
...  
Keyword(s):  
Organic Farming ◽  
Arbuscular Mycorrhizae ◽  
Farming Systems ◽  
Farming System ◽  
Future Research ◽  
Conventional Farming ◽  
Maize Rhizosphere ◽  
Bacterial Microbiota ◽  
Organic Farming Systems ◽  
Soil Rhizosphere

Maize is one of the most important crops worldwide and is the number one arable crop in Portugal. A transition from the conventional farming system to organic agriculture requires optimization of cultivars and management, the interaction of plant–soil rhizosphere microbiota being pivotal. The objectives of this study were to unravel the effect of population genotype and farming system on microbial communities in the rhizosphere of maize. Rhizosphere soil samples of two open-pollinated maize populations (“SinPre” and “Pigarro”) cultivated under conventional and organic farming systems were taken during flowering and analyzed by next-generation sequencing (NGS). Phenological data were collected from the replicated field trial. A total of 266 fungi and 317 bacteria genera were identified in “SinPre” and “Pigarro” populations, of which 186 (69.9%) and 277 (87.4%) were shared among them. The microbiota of “Pigarro” showed a significant higher (P < 0.05) average abundance than the microbiota of “SinPre.” The farming system had a statistically significant impact (P < 0.05) on the soil rhizosphere microbiota, and several fungal and bacterial taxa were found to be farming system-specific. The rhizosphere microbiota diversity in the organic farming system was higher than that in the conventional system for both varieties. The presence of arbuscular mycorrhizae (Glomeromycota) was mainly detected in the microbiota of the “SinPre” population under the organic farming systems and very rare under conventional systems. A detailed metagenome function prediction was performed. At the fungal level, pathotroph–saprotroph and pathotroph–symbiotroph lifestyles were modified by the farming system. For bacterial microbiota, the main functions altered by the farming system were membrane transport, transcription, translation, cell motility, and signal transduction. This study allowed identifying groups of microorganisms known for their role as plant growth-promoting rhizobacteria (PGPR) and with the capacity to improve crop tolerance for stress conditions, allowing to minimize the use of synthetic fertilizers and pesticides. Arbuscular mycorrhizae (phyla Glomeromycota) were among the most important functional groups in the fungal microbiota and Achromobacter, Burkholderia, Erwinia, Lysinibacillus, Paenibacillus, Pseudomonas, and Stenotrophomonas in the bacterial microbiota. In this perspective, the potential role of these microorganisms will be explored in future research.

scholarly journals Belowground fungal community diversity, composition and ecological functionality associated with winter wheat in conventional and organic agricultural systems

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9732
Author(s):  
Sigisfredo Garnica ◽  
Ronja Rosenstein ◽  
Max Emil Schön
Keyword(s):  
Winter Wheat ◽  
Organic Farming ◽  
Fungal Community ◽  
Agricultural Practices ◽  
Farming Systems ◽  
Fungal Communities ◽  
Conventional Farming ◽  
Total N ◽  
Ecological Functionality ◽  
Organic Farming Systems

Understanding the impacts of agricultural practices on belowground fungal communities is crucial in order to preserve biological diversity in agricultural soils and enhance their role in agroecosystem functioning. Although fungal communities are widely distributed, relatively few studies have correlated agricultural production practices. We investigated the diversity, composition and ecological functionality of fungal communities in roots of winter wheat (Triticum aestivum) growing in conventional and organic farming systems. Direct and nested polymerase chain reaction (PCR) amplifications spanning the internal transcribed spacer (ITS) region of the rDNA from pooled fine root samples were performed with two different sets of fungal specific primers. Fungal identification was carried out through similarity searches against validated reference sequences (RefSeq). The R package ‘picante’ and FUNGuild were used to analyse fungal community composition and trophic mode, respectively. Either by direct or cloning sequencing, 130 complete ITS sequences were clustered into 39 operational taxonomic units (OTUs) (25 singletons), belonging to the Ascomycota (24), the Basidiomycota (14) and to the Glomeromycota (1). Fungal communities from conventional farming sites are phylogenetically more related than expected by chance. Constrained ordination analysis identified total N, total S and Pcal that had a significant effect on the OTU’s abundance and distribution, and a further correlation with the diversity of the co-occurring vegetation could be hypothesised. The functional predictions based on FUNGuild suggested that conventional farming increased the presence of plant pathogenic fungi compared with organic farming. Based on diversity, OTU distribution, nutrition mode and the significant phylogenetic clustering of fungal communities, this study shows that fungal communities differ across sampling sites, depending on agricultural practices. Although it is not fully clear which factors determine the fungal communities, our findings suggest that organic farming systems have a positive effect on fungal communities in winter wheat crops.

Response of soil arthropods population to different farming systems under cotton integrated with groundnut and pigeonpea crops

2018 ◽  
Author(s):  
R. Chethan ◽  
R.K. K. Patil ◽  
B. Halappa
Keyword(s):  
Organic Farming ◽  
Farming Systems ◽  
Farming System ◽  
Pitfall Trap ◽  
Seasonal Abundance ◽  
Soil Arthropods ◽  
Conventional Farming ◽  
Below Ground ◽  
Abundance And Diversity ◽  
Organic Farming System

A study was carried out to know the response of organic, integrated and conventional farming systems on the diversity of soil meso and macro arthropod populations in the cotton inter cropped with groundnut and pigeonpea at MARS, UAS, Dharwad during kharif -2015-16. The organic farming system has recorded highest meso and macro arthropod population of 21.35 per 100 g of soil and 42.00 per pitfall trap respectively. Cotton intercropped with groundnut has recorded higher population of meso and macro arthropods (15.50 /100 g of soil and 41.26/ pitfall trap, respectively). The seasonal abundance of soil arthropods was high in October (25.89/100g of soil) and least in December (5.78/ 100g of soil) months. The diversity of soil arthropod populations assessed on the Shannon’s index of below ground arthropod populations recorded was highest in organic farming (0.61) and least in conventional farming (0.51) system. Hence, the organic farming system increases abundance and diversity of soil organisms and soil fertility, and it adds large amounts of organic residue inputs, which in turn increases the biological activity in soil.

scholarly journals The Performance of Oat-Vetch Mixtures in Organic and Conventional Farming Systems

Agriculture ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 332 ◽  
Author(s):  
Katarzyna Pużyńska ◽  
Agnieszka Synowiec ◽  
Stanisław Pużyński ◽  
Jan Bocianowski ◽  
Kazimierz Klima ◽  
...  
Keyword(s):  
Crop Rotation ◽  
Farming Systems ◽  
Farming System ◽  
Conventional Farming ◽  
Common Vetch ◽  
Organic System ◽  
Area Index ◽  
Organic Farming Systems ◽  
Organic And Conventional Farming ◽  
Selection Of

The research aimed to compare the yields and yield components of mixtures of oats with common vetch grown for seeds in organic and conventional farming systems. Moreover, the selection of oat cultivars for the mixture and its performance in a crop rotation experiment in different growing years was analyzed. Additionally, the leaf area index (LAI) and the relative content of chlorophyll (SPAD) of the mixtures were assessed. The field experiment with four-field crop rotation in organic or conventional farming systems was carried out in 2012–2014 in southern Poland. Common vetch (Vicia sativa L., cv. ‘Hanka’) was mixed with one of two oat (Avena sativa L.) cultivars, ‘Celer’ or ‘Grajcar.’ The effects of all of the factors on the mixtures’ canopy indices and yield were found. The canonical analysis revealed that the weather course, especially drought, had the largest effect on the oat-vetch mixtures’ performance. Moreover, the mixtures developed the highest LAI (5.28 m2∙m−2) and seed yield (4.57 t ha−1) in the conventional farming system. On the contrary, the share of vetch seeds in the mixtures was 24% higher in the organic system than in the conventional one. The selection of cv. ‘Grajcar’ oats for the mixture with vetch increased the share of vetch seeds in the yield by 16.5%. In summary, a balanced share of oat-vetch mixture components depends on the proper selection of the oat cultivar, especially for organic farming systems.

scholarly journals Multi-community effects of organic and conventional farming practices in vineyards

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Noémie Ostandie ◽  
Brice Giffard ◽  
Olivier Bonnard ◽  
Benjamin Joubard ◽  
Sylvie Richart-Cervera ◽  
...  
Keyword(s):  
Organic Farming ◽  
Farming Systems ◽  
Farming System ◽  
Conventional Farming ◽  
Farming Practices ◽  
Large Variability ◽  
Soil Microbial ◽  
Pollinator Abundance ◽  
Certified Organic ◽  
Multiple Species

AbstractUnderstanding the response of biodiversity to organic farming is crucial to design more sustainable agriculture. While it is known that organic farming benefits biodiversity on average, large variability in the effects of this farming system exists. Moreover, it is not clear how different practices modulate the performance of organic farming for biodiversity conservation. In this study, we investigated how the abundance and taxonomic richness of multiple species groups responds to certified organic farming and conventional farming in vineyards. Our analyses revealed that farming practices at the field scale are more important drivers of community abundance than landscape context. Organic farming enhanced the abundances of springtails (+ 31.6%) and spiders (+ 84%), had detrimental effects on pollinator abundance (− 11.6%) and soil microbial biomass (− 9.1%), and did not affect the abundance of ground beetles, mites or microarthropods. Farming practices like tillage regime, insecticide use and soil copper content drove most of the detected effects of farming system on biodiversity. Our study revealed varying effects of organic farming on biodiversity and clearly indicates the need to consider farming practices to understand the effects of farming systems on farmland biodiversity.

scholarly journals Sustainability performance of organic farming at vegetable fields in Tabanan, Bali, Indonesia

2021 ◽  
Vol 18 (1) ◽  
pp. 7
Author(s):  
I Ketut Sardiana ◽  
Tati Budi Kusmiyarti
Keyword(s):  
Organic Farming ◽  
Soil Quality ◽  
Assessment Tool ◽  
Farming Systems ◽  
Field Capacity ◽  
Farming System ◽  
Biological Properties ◽  
Conventional Farming ◽  
Organic C ◽  
Sustainability Performance

<p>Sustainable agriculture aims to maintain high productivity while maintaining soil quality. The purpose of this study is to determine the sustainability performance of organic vegetable farming systems with soil quality indicators as a soil quality assessment tool. Soil physical, chemical, and biological properties in Chinese cabbage in Baturiti Subdistrict, Tabanan Regency, Bali, Indonesia, were evaluated as indicators for predicting organic cabbage production and yield. Soil samples were obtained from organic farming systems that have been going on for 1, 3, and 5 years after certification, compared with conventional farming systems. The results showed that the soil quality of the organic farming system after 5 years (OF5) was significantly higher than the conventional farming system. Physically, soil moisture at the field capacity in OF5 was significantly higher than that in the other systems. Chemically, the organic C and cation exchange capacity in organic systems were significantly higher than in conventional systems. The same results were shown by soil respiration, which means that there was high soil microbial activity. Based on the cumulative soil quality rating, it is concluded that the OF5 system met the sustainability criteria, with no high input required.</p>

scholarly journals PERAN TANAMAN BENGKUANG (Pachyrrhizuz erosus L.) DALAM MENDUKUNG SISTEM PERTANIAN ORGANIK

2019 ◽  
Vol 5 (2) ◽  
Author(s):  
Robiatul Adawiyah ◽  
Terry Pakki
Keyword(s):  
Soil Fertility ◽  
Organic Farming ◽  
Organic Fertilizer ◽  
Farming Systems ◽  
Farming System ◽  
Negative Effects ◽  
Inorganic Fertilizers ◽  
Organic Farming Systems ◽  
Synthetic Pesticides ◽  
Organic Farming System

Abstrak               Tantangan pertanian ke depan adalah peningkatan produksi pertanian, kelestarian lingkungan dan kesehatan masyarakat sebagai akibat meningkatnya jumlah penduduk dan kesadaran masyarakat akan pengaruh negatif yang ditimbulkan oleh penggunaan pupuk anorganik dan pestisida sintetik/kimia (anorganik).  Sistem pertanian organik merupakan salah satu solusi yang diajukan untuk diterapkan pada sistem pertanian di masa yang akan datang.  Sistem pertanian organik adalah sistem budidaya pertanian yang mengandalkan bahan-bahan alami tanpa menggunakan bahan kimia/sintesis (anorganik).  Pemanfaatan pupuk organik dan pestisida nabati dalam usaha pertanian akan mengurangi resiko pencemaran lingkungan, meningkatkan efisiensi pemupukan, serta menekan pengaruh negatif dari penggunaan pupuk anorganik dan pestisida sintesik/kimia (anorganik).  Prinsip dalam sistem pertanian organik adalah adanya keseimbangan siklus hara dan kesuburan tanah serta pengendalian hama dan penyakit secara terpadu.  Untuk meningkatkan kesuburan tanah dan memenuhi kebutuhan pupuk organik di dalam menjaga keseimbangan siklus hara, serta mengurangi penggunaan pestisida nabati, peran legum seperti bengkuang (Pachyrrhizuz erosus L.) perlu dikaji lebih mendalam. Tanaman bengkuang sangat potensial dalam mendukung diterapkannya sistem pertanian organik karena; biomassa yang banyak dan mengandung nitrogen yang tinggi (3.42% - 3.51%), kemampuan hidup yang sangat luas di berbagai kondisi lahan karena bersimbiosis dengan bakteri Rhizobium dan Bradyrhizobium dalam menambat nitrogen (N2) udara dan bersimbiosis dengan cendawan mikoriza (AMF) yang dapat membantu penyerapan unsur hara terutama fosfor.  Selain itu, kecuali umbi, bagian tanaman lainnya terutama pada biji bengkuang mengandung metabolit sekunder seperti rotenon yang bersifat insektisida.  Dengan demikian maka bengkuang ini dapat dimanfaatkan sebagai bahan pupuk organik dan sebagai insektisida nabati dalam mendukung sistem pertanian organik. Kata Kunci: bengkuang(Pachyrrhizuz erosus L.), legum, rotenon, sistem pertanian organik Abstract                The challenge of agriculture in the future is to increase agricultural production, environmental sustainability and public health as a result of increasing population and public awareness of the negative effects caused by the use of inorganic fertilizers and chemical/ synthetic pesticides. Organic farming system is one of the solutions proposed to be applied to agricultural systems in the future. Organic farming system is an agricultural cultivation system that relies on natural materials without using synthetic/chemicals (inorganic). Utilization of organic fertilizers and pesticides in agricultural businesses will reduce the risk of environmental pollution, improve fertilization efficiency, and reduce the negative effects of the use of inorganic fertilizers and chemical/synthetic pesticides. The principle in organic farming systems is the balance of nutrient cycling and soil fertility and integrated pest and disease control. To improve soil fertility and meet the needs of organic fertilizer in maintaining the balance of nutrient cycles, and reduce the use of synthetic chemical pesticides, the role of legumes such as yam bean (Pachyrrhizuz erosus L.) needs to be studied more deeply. Yam bean plants are very potential in supporting the implementation of organic farming systems because; a lot of high and nitrogen containing biomass (3.42% - 3.51%), a very broad life ability in various land conditions because it is symbiotic with Rhizobium and Bradyrhizobium bacteria in fixing nitrogen (N2) air and symbiosis with mycorrhizal fungi (AMF) which can help absorption of nutrients, especially phosphorus. Especially in jicama seeds contain secondary metabolites such as rotenone which are insecticides. Thus, this yam bean can be used as an organic fertilizer and as a organic/vegetable insecticide in supporting organic farming systems. Keywords: Yam bean (Pachyrrhizuz erosus L.), legumes, rotenon, organic farming systems

scholarly journals Towards Sustainable Organic Farming Systems

2020 ◽  
Vol 12 (23) ◽  
pp. 9832
Author(s):  
El Chami Daniel
Keyword(s):  
Sustainable Agriculture ◽  
Organic Farming ◽  
Action Plan ◽  
Farming Systems ◽  
Farming System ◽  
Policy Instrument ◽  
The European Union ◽  
Development Goals ◽  
Organic Farming Systems ◽  
Change Mitigation

The European Union green deal has proposed the “organic farming action plan” to render a farming system that is more sustainable and adaptable in terms of climate change mitigation and thus enable meeting the United Nations Sustainable Development Goals (UN-SDGs). While this policy instrument is fundamental to achieving sustainable agriculture, there is still no agreement on what sustainable agriculture is and how to measure it. This opinion paper proposes an ecosystem-based framework for the crop life cycle to determine the balance between the economic, social, and environmental pillars of sustainability toward supporting decision-making.

Adaptability to organic farming of lentil (Lens culinaris Medik.) varieties developed from conventional breeding programmes

2010 ◽  
Vol 149 (1) ◽  
pp. 85-93 ◽  
Author(s):  
D. N. VLACHOSTERGIOS ◽  
A. S. LITHOURGIDIS ◽  
D. G. ROUPAKIAS
Keyword(s):  
Organic Farming ◽  
Organic Agriculture ◽  
Lens Culinaris ◽  
Farming Systems ◽  
Direct Selection ◽  
Conventional Farming ◽  
Organic System ◽  
Conventional Breeding ◽  
Breeding Programmes ◽  
Organic Farming Systems

SUMMARYThe development of organic agriculture has raised the demand for crop varieties well-adapted to organic farming systems. Most of the varieties presently cultivated in organic agriculture were developed from conventional breeding programmes. The objective of the present work was to study the adaptability to organic farming systems of lentil (Lens culinaris Medik.) varieties developed from conventional breeding programmes. Twenty varieties were evaluated over five environments under organic and conventional farming systems from 2005 to 2007. Genotype×system interactions (GSI) for grain yield were significantly different in four out of the five environments and GSI explained 0·03–0·17 of the variance. Spearman's rank correlation index of the 20 varieties between the conventional and organic system ranged from 0·27 to 0·93 in the five environments. Direct selection of the top five varieties in organic systems resulted in significantly higher grain yields than indirect selection in one out of the five environments. However, among the top five varieties, the highest yielding varieties under conventional farming systems were not always the highest yielding varieties under organic farming systems. These results indicate that the demands of organic agriculture for yield performance could be only partially satisfied by varieties developed under conventional breeding programmes.

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