scholarly journals Economic Responses of Maize, Soybean, and Wheat in Three Rotations under Conventional and Organic Systems

Agronomy ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 424
Author(s):  
William Cox ◽  
John J. Hanchar ◽  
Jerome Cherney ◽  
Mark Sorrells
Keyword(s):  
New York ◽  
Red Clover ◽  
Production Costs ◽  
Price Premium ◽  
Conventional System ◽  
Lower Yield ◽  
Organic System ◽  
Organic Systems ◽  
Conventional Systems ◽  
Organic Premium

Low prices have prompted growers to contemplate transitioning to an organic system. We evaluated red clover-maize-soybean-wheat (Cl-M-S-W), maize-soybean (M-S-M-S), and soybean-wheat/red clover-maize-soybean (S-W/Cl-M-S) rotations in organic and conventional systems in New York, USA from 2015 to 2018 to identify profitable organic practices. Organic compared with conventional maize in 2017 had 14.6% higher yield and $2107/ha higher returns above selected costs in the S-W/Cl-M-S rotation; and had $1007/ha higher returns in the M-S-M-S rotation, despite 3.6% lower yield and higher production costs, because of the organic price premium. Likewise, organic compared with conventional soybean had ~$800 to ~$900/ha higher returns in 2017 and 2018, despite ~10% lower yield and ~$50/ha higher production costs, because of the organic price premium. Organic compared with conventional wheat yielded ~4% higher with $125/ha higher returns, despite ~$435/ha higher production costs. Organic compared with the conventional system had $1018/ha higher returns in the Cl-M-S-W rotation, $1782/ha higher in the M-S-M-S rotation, and $2961/ha higher in the S-W/Cl-M-S rotation in 2017 and 2018. Although returns in 2015 and 2016 (no organic premium) were lower, the organic compared with the conventional system from 2015 to 2018 had $673/ha higher returns in the Cl-M-S-W rotation, $497/ha higher in the M-S-M-S rotation, and $2355/ha higher in the S-W/Cl-M-S rotation indicating that the S-W/Cl-M-S rotation was the most profitable organic rotation during the four-year period.

scholarly journals Soil fertility and crop yields in long-term organic and conventional cropping systems in Eastern Nebraska

2011 ◽  
Vol 27 (3) ◽  
pp. 200-216 ◽  
Author(s):  
Sam E. Wortman ◽  
Tomie D. Galusha ◽  
Stephen C. Mason ◽  
Charles A. Francis
Keyword(s):  
Soil Fertility ◽  
Crop Yields ◽  
Cropping Systems ◽  
Animal Manure ◽  
Conventional System ◽  
Organic System ◽  
Organic Systems ◽  
Long Term Study ◽  
Conventional Systems

AbstractOrganic agriculture aims to build soil quality and provide long-term benefits to people and the environment; however, organic practices may reduce crop yields. This long-term study near Mead, NE was conducted to determine differences in soil fertility and crop yields among conventional and organic cropping systems between 1996 and 2007. The conventional system (CR) consisted of corn (Zea maysL.) or sorghum (Sorghum bicolor(L.) Moench)–soybean (Glycine max(L.) Merr.)–sorghum or corn–soybean, whereas the diversified conventional system (DIR) consisted of corn or sorghum–sorghum or corn–soybean–winter wheat (wheat,Triticum aestivumL.). The animal manure-based organic system (OAM) consisted of soybean–corn or sorghum–soybean–wheat, while the forage-based organic system (OFG) consisted of alfalfa (Medicago sativaL.)–alfalfa–corn or sorghum–wheat. Averaged across sampling years, soil organic matter content (OMC), P, pH, Ca, K, Mg and Zn in the top 15 cm of soil were greatest in the OAM system. However, by 2008 OMC was not different between the two organic systems despite almost two times greater carbon inputs in the OAM system. Corn, sorghum and soybean average annual yields were greatest in either of the two conventional systems (7.65, 6.36 and 2.60 Mg ha−1, respectively), whereas wheat yields were greatest in the OAM system (3.07 Mg ha−1). Relative to the mean of the conventional systems, corn yields were reduced by 13 and 33% in the OAM and OFG systems, respectively. Similarly, sorghum yields in the OAM and OFG systems were reduced by 16 and 27%, respectively. Soybean yields were 20% greater in the conventional systems compared with the OAM system. However, wheat yields were 10% greater in the OAM system compared with the conventional DIR system and 23% greater than yield in the OFG system. Alfalfa in the OFG system yielded an average of 7.41 Mg ha−1annually. Competitive yields of organic wheat and alfalfa along with the soil fertility benefits associated with animal manure and perennial forage suggest that aspects of the two organic systems be combined to maximize the productivity and sustainability of organic cropping systems.

scholarly journals KEANEKARAGAMAN CAPUNG (ODONATA) PADA SAWAH SISTEM ORGANIK DAN KONVENSIONAL DI KABUPATEN PADANG PARIAMAN

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Zulhafandi Zulhafandi
Keyword(s):  
Random Sampling ◽  
Rice Plant ◽  
Rice Field ◽  
Diversity Index ◽  
Conventional System ◽  
Organic System ◽  
Agricultural Ecosystems ◽  
Organic Systems ◽  
Conventional Systems ◽  
Sampling Survey

ABSTRACTDragonflies are insects important in agricultural ecosystems. Dragonflies have a role as a predator, both in theform of a naiad and adults and feed on certain types of pests on rice plant. The objective of the research was tostudy the diversity of dragonflies (Odonata) in the fields organic and conventional systems of rice in PadangPariaman Regency. A survey was conducted using Purposive sampling survey. Sampleswere collected by usingwater and swinging insect nets. The results showed that the dragonflies (Odonata) found on the site of the researchconsisted of 5 family, 15 species with a total of 354 individuals. Odonata found in organic systems rice fieldsconsisted of 5 family, 15 species and 275 individuals, while the ones in conventional system of rice fields were 3familes, 10 species, 79 individuals. Diversity and equity were higher on the organic system of rice field 2.47 andequity 0.90 respectively, compared with conventional rice field with the value of diversity index of 1.98 and equityindex 0.82.Keywords: Diversity, Dragonflies (Odonata), organic, conventionalABSTRACTCapung merupakan serangga yang penting dalam ekosistem pertanian. Capung memiliki peran sebagai predator,baik dalam bentuk naiad maupun dewasa dan memangsa beberapa jenis hama pada tanamana padi. Penelitian inibertujuan untuk mempelajari keanekaragaman capung (Odonata) pada sawah sistem organik dan konvensional diKabupaten Padang Pariaman. Metode yang digunakan adalah metode survey dengan pengambilan sampelPurposive Random Sampling. Cara pengambilan sampel yaitu dengan menggunakan jaring air dan jaring ayunHasil penelitian menunjukkan bahwa capung (Odonata) yang ditemukan pada lokasi penelitian terdiri dari 5famili, 15 spesies dengan total individu 354. Odonata pada sawah sistem organik 5 famili, 15 spesies, dan 275individu, sedangkan pada sawah konvensional ditemukan 3 famili, 10 spesies dan 79 individu. Keanekaragamandan kemerataan lebih tinggi terdapat pada sawah sistem organik dengan nilai indeks 2,47 dan kemerataan 0,90,dibandingkan dengan sawah konvensional yang memiliki nilai indeks keanekaragaman 1,98 dengan kemerataan0,82Kata kunci : Keanekaragaman, Capung (Odonata), organik, konvensional

scholarly journals Microbiological evaluation of lettuce produced by conventional and organic systems in farms of Londrina, PR

2017 ◽  
Vol 38 (1) ◽  
pp. 175 ◽  
Author(s):  
Natalia Harumi Niguma ◽  
Jacinta Sanchez Pelayo ◽  
Tereza Cristina Rocha Moreira de Oliveira
Keyword(s):  
Irrigation Water ◽  
Water Samples ◽  
Total Coliform ◽  
Organic Production ◽  
Conventional System ◽  
Salmonella Spp ◽  
Organic System ◽  
E Coli ◽  
Organic Systems ◽  
Production Practices

The aims of this study were to evaluate the contamination of lettuce (Lactuca sativa), produced in Londrina, Paraná (PR), with total coliform, coliform at 45 °C, E. coli, and Salmonella spp.; and to determine the E. coli contamination of irrigation water used at the farms studied. Four farms were evaluated, of which three produced lettuce using a conventional system and one using an organic system. An evaluation of the production practices of the farms was also carried out. A total of 111 samples were analyzed, 71 lettuce samples from the conventional system and 40 samples from the organic system. A total of eight irrigation water samples were collected for analysis. Coliform at 45 °C counts above the limit tolerated by Brazilian legislation were observed in 2.8% (2/71) of conventionally grown lettuce samples, and Salmonella spp. was isolated in 1.4% (1/71) of those samples. In the organic lettuce samples, 12.5% (5/40) had coliform at 45 °C counts above the limit tolerated and Salmonella spp. was not detected. Irrigation water samples from three farms were unsatisfactory, with counts higher than 102MPN of E. coli per 100mL. The results of this study demonstrate that most conventionally grown lettuce samples show good sanitary conditions in production, and that lettuce contamination is not related to contamination found in irrigation water samples. The results also showed that the organic production practices required by Brazilian certification agencies should be applied to ensure that contamination of produced lettuce remains controlled.

scholarly journals Postharvest quality of strawberry fruits produced in organic and conventional systems

2011 ◽  
Vol 29 (4) ◽  
pp. 577-583 ◽  
Author(s):  
Letícia KP Camargo ◽  
Juliano Tadeu V de Resende ◽  
Tânia T Tominaga ◽  
Sonia Maria Kurchaidt ◽  
Cristhiano K Camargo ◽  
...  
Keyword(s):  
Titratable Acidity ◽  
Physicochemical Characteristics ◽  
Soluble Solids ◽  
Postharvest Quality ◽  
Conventional System ◽  
Organic System ◽  
Camino Real ◽  
Sensorial Attributes ◽  
Solids Content ◽  
Conventional Systems

The aim of this study was to determine some physicochemical characteristics of fruits of eight strawberry cultivars (Aromas, Camino Real, Campinas, Dover, Oso Grande, Toyonoka, Tudla-Milsei and Ventana) cultivated in organic and conventional systems. The evaluated characteristics were soluble solids (SS), titratable acidity (TA), SS/AT ratio and anthocyanins. Evaluated sensory characteristics were flavor and appearance. The cultivars had a differential performance between themselves and among the systems for the evaluated characteristics. Generally, the conventional system produced fruit with higher levels of soluble solids and, organic system produced higher concentrations of anthocyanins. The fruits of the cultivar Toyonoka had the best soluble solids content in both systems and the anthocyanins content of 'Tudla-Milsei' and 'Camino Real' were proeminent in comparison to the other cultivars. The fruits from the organic system of production were preferred by judges on the sensorial attributes. The highest notes were given to the appearance of the cultivar Ventana in the conventional system and 'Tudla-Milsei' in the organic system.

scholarly journals Benthic macroinvertebrates and degradation of phytomass as indicators of ecosystem functions in flooded rice cropping

2017 ◽  
Vol 52 (4) ◽  
pp. 261-270 ◽  
Author(s):  
Lilian Terezinha Winckler ◽  
Angélica Konradt Güths ◽  
Pâmela Rodrigues Gayer
Keyword(s):  
Benthic Macroinvertebrates ◽  
Trophic Group ◽  
Ecosystem Functions ◽  
Conventional System ◽  
Natural Wetland ◽  
Wetland Area ◽  
Organic System ◽  
Flooded Rice ◽  
Rice Area ◽  
Conventional Systems

Abstract: The objective of this work was to evaluate the ecosystem functions of a natural wetland and of artificially flooded rice areas, managed under organic and conventional systems, by phytomass degradation and by the colonization of this material by benthic macroinvertebrates. The experiment was carried out in a natural wetland area, and in two flooded rice areas managed under organic and conventional systems. Twenty-five decomposition bags filled with 10 g of dry vegetation were installed in each site. At 14, 28, 42, 56, and 70 days after the beginning of the experiment, five bags from each site were collected. Macroinvertebrates were identified and classified by functional trophic group. The number of species of benthic macroinvertebrates increased: natural wetland > organic system > conventional system. The Chironomidae group was present in all areas, confirming its food plasticity and adaptability to different substrates and environmental stress situations. The Amphipoda group was present only in the artificially flooded rice area, and the Acari, only in the natural wetland. The diversity of species in the natural wetland area was higher than in the artificially flooded rice area. Nutrient cycling, provided by phytomass decomposition, is affected by the management system, and the delay in this process causes a reduction of the ecosystem functions in the conventional system.

scholarly journals Vegetative parameters of apple cultivars in integrated and organic production systems

2016 ◽  
Vol 22 (1-2) ◽  
Author(s):  
P. Dremák ◽  
Á. Csihon ◽  
I. Gonda
Keyword(s):  
Production System ◽  
Production Systems ◽  
Training System ◽  
Organic Production ◽  
Production Costs ◽  
Organic System ◽  
Lower Trunk ◽  
Organic Systems ◽  
Apple Cultivars ◽  
Apple Production

Success of apple production is highly influenced by the applied production system and the planted cultivar. In this paper growing characteristics of 39 apple cultivars were studied in integrated and organic production systems. These kind of parameters are less studied in the cultivar and training system examinations, although they have huge effect on the training and maintaining of canopy, on the pruning necessity, ultimately on the production costs. According to our results the thickness of the central axis of apple trees showed significant differences between the integrated and the organic systems. Axis of the trees with lower trunk thickness tapers more slightly in the integrated production system, than in the case of the trees with thicker trunk in the organic system. Thicker axis is not accompanied by thicker trunk, namely the thickness of the central leader starts to decrease stronger in the organic production system, compared to the integrated one.

scholarly journals An Examination of the Economics of Sustainable and Conventional Horticulture

2000 ◽  
Vol 10 (4) ◽  
pp. 687-691
Author(s):  
Robin G. Brumfield
Keyword(s):  
Crop Production ◽  
Production Systems ◽  
Economic Benefits ◽  
Production Costs ◽  
Organic System ◽  
Price Premiums ◽  
Organic Systems ◽  
Long Term Study ◽  
Adverse Impacts ◽  
The Cost

Since World War II, U.S. agriculture has reduced production costs by substituting petrochemicals for labor. Adverse impacts from chemical intensive agriculture include increased pest levels, groundwater and surface water contamination, soil erosion, and concerns about harmful levels of pesticide residues. Sustainable farming programs such as integrated crop management (ICM) and organic farming encourage farmers to use systems that reduce the adverse impacts of chemical agriculture. However, before farmers adopt an alternative system, they must determine that economic benefits from the alternative farming activities exceed the costs incurred. Unfortunately, relatively few studies have compared the cost of organic crop production with conventional production systems. Results of these studies are mixed. In some studies, organic systems are more profitable than conventional systems with organic price premiums, but are not economically viable without price premiums. In one long-term study, the organic system was more profitable than a conventional one if the cost of family labor was ignored, but less profitable if it was included. In some studies, net returns were higher for ICM than for conventional or organic systems, but in others, they were higher. Results also vary on a crop by crop basis.

scholarly journals Agronomic and Economic Performance of Maize, Soybean, and Wheat in Different Rotations during the Transition to an Organic Cropping System

Agronomy ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 192 ◽  
Author(s):  
William Cox ◽  
John Hanchar ◽  
Jerome Cherney
Keyword(s):  
New York ◽  
Management Practices ◽  
Crop Yields ◽  
Negative Impact ◽  
Cropping Systems ◽  
Cropping System ◽  
Red Clover ◽  
Production Costs ◽  
High Input ◽  
Price Premiums

Crop producers transitioning to an organic cropping system must grow crops organically without price premiums for 36 months before certification. We evaluated red clover-maize, maize-soybean, and soybean-wheat/red clover rotations in organic and conventional cropping systems with recommended and high inputs in New York, USA to identify the best rotation and management practices during the transition. Organic compared with conventional maize with recommended inputs in the maize-soybean rotation (entry crop) averaged 32% lower yields, $878/ha higher production costs, and $1096/ha lower partial returns. Organic maize compared with conventional maize with recommended inputs in the red clover-maize rotation (second transition crop) had similar yields, production costs, and partial returns. Organic compared with conventional soybean with recommended inputs in soybean-wheat/red clover or maize-soybean rotations had similar yields, production costs, and partial returns. Organic compared with conventional wheat with recommended inputs in the soybean-wheat/clover rotation had similar yields, $416/ha higher production costs, and $491/ha lower partial returns. The organic compared with the conventional soybean-wheat/red clover rotation had the least negative impact on partial returns during the transition. Nevertheless, all organic rotations had similar partial returns ($434 to $495/ha) so transitioning immediately, regardless of entry crop, may be most prudent. High input management did not improve organic crop yields during the transition.

scholarly journals Productivity in seeds of the green bean produced under conventional and organic systems

2018 ◽  
Vol 39 (4) ◽  
pp. 1389
Author(s):  
Ruanny Karen Vidal Pantoja Portal ◽  
Warley Marcos Nascimento ◽  
Valdivina Lúcia Vidal ◽  
Marcos Coelho ◽  
Nei Peixoto
Keyword(s):  
The Other ◽  
Green Bean ◽  
Conventional System ◽  
Organic System ◽  
Experimental Station ◽  
Organic Systems ◽  
System A ◽  
The Mean ◽  
100 Seed Weight ◽  
Number Of Seeds

Two experiments were carried out during 2016 at the Anápolis Experimental Station of EMATER in the State of Goiás, with the aim of studying the yield of seeds of 18 strains and two indeterminate cultivars of the green bean, one experiment under a conventional system and the other under an organic system. A randomized block experimental design was used, with twenty treatments and three replications, to evaluate the mean number of seeds per pod (NSP), 100-seed weight (100SW) and productivity (PROD). Under the conventional system, the 100SW ranged from 19.3 to 25.0 grams. The highest productivity was achieved with the UEG 0212, UEG 0212, UEG 0712 and UEG 3014 strains, which were superior to the other strains, including the controls. Under the organic system, there was a range of 6.66 to 8.33 for the NSP, while for the 100SW, the range was from 23 to 32 grams. The UEG 0212, UEG 1012, UEG 2014 and UEG 3014 strains, all with cylindrical pods and white seeds, can be used as alternatives for planting, being superior to the ‘Favorito’ cultivar and equal to the ‘Macarrão Bragança’ cultivar, whereas UEG 1112 and UEG 0714, with cylindrical pods and cream-colored seeds, can be used as dual-adapted cultivars, with green pods and dry grain that can be used as end-of-cycle pods if there are defects that are not accepted by the market.

scholarly journals Changes in the Soil Microbial Hydrolytic Activity and the Content of Organic Carbon and Total Nitrogen by Growing Spring Barley Undersown with Red Clover in Different Farming Systems

Agriculture ◽  
2019 ◽  
Vol 9 (7) ◽  
pp. 146
Author(s):  
Jaan Kuht ◽  
Viacheslav Eremeev ◽  
Liina Talgre ◽  
Maarika Alaru ◽  
Evelin Loit ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Cover Crops ◽  
Positive Impact ◽  
Red Clover ◽  
Hydrolytic Activity ◽  
Soil Microbial ◽  
Organic Systems ◽  
Winter Cover ◽  
Winter Cover Crops ◽  
Conventional Systems

The experiments were carried out during 2012–2017. There were 5 crops in rotation: Red clover, winter wheat, pea, potato and barley undersown (us) with red clover. There were 5 cropping systems in the experimental setup: 2 conventional systems with chemical plant protection and mineral fertilizers; 3 organic systems which included winter cover crops and farm manure. The aim of the present research was to study the effect of cultivating barley undersown with red clover and the preceding winter cover crop on the soil microbial hydrolytic activity, the change in the content of soil organic carbon (SOC) and total nitrogen (Ntot) compared to the same parameters from the field that was previously under potato cultivation (forecrop of barley in the rotation). The cultivation of barley with red clover (barley (us)) had a positive impact on the soil micro-organisms activity. In organic systems the soil microbial hydrolytic activity increased on average by 19.0%, compared to the conventional systems. By cultivating barley (us) the soil microbial hydrolytic activity had a significant effect on the SOC content only in organic systems where winter cover crops were used. Organic cultivation systems had positive impact on the soil nitrogen content; Ntot in samples taken before sowing the barley (us) was higher by 17.4% and after the cultivation of barley (us) by 14.4% compared to conventional systems, as an average of experimental years. After cultivation of barley (us) with red clover the soil microbial hydrolytic activity had no effect on the soil Ntot content in either cultivation systems.

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