Tag Archives: intercropping

559–573 M. Latati, N.Y. Rebouh, A. Aouiche and M. Laouar
Modeling the functional role of the microorganisms in the daily exchanges of carbon and nitrogen in intercropping system under Mediterranean conditions
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Modeling the functional role of the microorganisms in the daily exchanges of carbon and nitrogen in intercropping system under Mediterranean conditions

M. Latati¹*, N.Y. Rebouh², A. Aouiche³ and M. Laouar¹

¹Ecole Nationale Supérieure Agronomique, Département de Productions Végétales. Laboratoire d’Amélioration Intégrative des Productions Végétales (C2711100). Rue Hassen Badi, El Harrach DZ16200 Alger, Algérie
²University of Russia (RUDN University) Department of AgroBiotechnology, Institute of Agriculture,Peoples' Friendship, 6 Miklukho-Maklaya street, RU117198 Moscow, Russia
³Ecole Supérieure des Sciences de l'Aliment et des Industries Agroalimentaires (ESSAIA), Avennue Ahmed Hamidouch Route de Beaulieu, El Harrach, DZ16200 Alger, Algérie
*Correspondence: m.latati@yahoo.com

Abstract:

Carbon (C) and nitrogen (N) sequestration in plants and soil micro-organisms is considered as a major phenomenon against global warming. The modeling of this phenomenon aims at highlighting the role that the legumes-cereals mixed crop can play in the reduction of greenhouse gases. It is based on field experiments in maize (Zea mays L.)-common bean (Phaseolus vulgaris L.) intercropped system of the cereal agroecosystem in Setif region of Algeria. For this purpose, the MOMOS model was selected and validated in a calcareous soil and low phosphorus (P) conditions. It revealed some mechanisms that control the C and N sequestration in the compartments of the complex soil-plant-atmosphere-microorganism system. CN modeling results show that the daily growth of intercropped maize with common beans is positively correlated with the microbial CN transformation during the cropping cycle, under limited P and N conditions. Thus, this approach revealed the functional role of rhizobial symbiosis in maintaining the balance between the different C and N exchanges from soil to atmosphere and from atmosphere to soil.

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2048–2067 M.W. Puteri Edaroyati, H. Siti Aishah and A.M. Al-Tawaha
Requirements for inserting intercropping in aquaponics system for sustainability in agricultural production system
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Requirements for inserting intercropping in aquaponics system for sustainability in agricultural production system

M.W. Puteri Edaroyati*, H. Siti Aishah and A.M. Al-Tawaha

Department of Crop Science, Faculty of Agriculture, University Putra Malaysia, MY 43400 UPM Serdang, Selangor, Malaysia
*Correspondence: putri@upm.edu.my

Abstract:

In recent years, the recirculating aquaponics system has gained high attention and significant popularity for organic vegetables and fruits production which contributes to the sustainable aquaculture for tropical regions. This review aims to summarize the possibility for practicing intercropping in aquaponics to produce high-quality fruits, vegetables and fish without any chemical fertilizer and minimum ecological impact for a sustainable agriculture. Although many studies have addressed about aquaponics for producing high-value crops such as tomato, cucumber, and lettuce, there is still a lack of complete information to support the development of intercropping in aquaponics and limited focus on its commercial implementation. Moreover, this study will focus first on the requirements for inserting intercropping in aquaponics and technical improvements needed to adapt as potential for sustainable food production system to increase productivity around the world, especially in countries have deficiency in water and land resources as well as soil problem like salinity and reduce environmental emissions. Secondly, the insertion of intercropping in aquaponics must be for crops with high value and for crops that can complement together such as tomato with basil and tomato with lettuce. Thirdly, in technical improvement in this study will summarize the strategies and factors that affect the intercropping in aquaponics system such as the nutrients needed for crops under intercropping aquaponics, stocking density and feeding rate which are important to know the concentration of ammonia that is produced and converted to nitrate so that the plants can uptake it. Studying the requirements for inserting and improving intercropping in aquaponics will increase our understanding of needed for new agriculture technique that contributes to the sustainable aquaponics for tropical regions.

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1267–1275 E. Akk,, T.E. Søndergaard, J.L. Sørensen, H. Giese, M.L. Kütt, L. Edesi, H. Lõiveke and E. Lauringson
The effects of nitrogen rates and intercropping on the occurrence of Fusarium spp. on barley kernels
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The effects of nitrogen rates and intercropping on the occurrence of Fusarium spp. on barley kernels

E. Akk¹,*, T.E. Søndergaard², J.L. Sørensen², H. Giese², M.L. Kütt⁵, L. Edesi³, H. Lõiveke¹ and E. Lauringson⁴

¹ Estonian Crop Research Institute, Department of Plant Protection, J. Aamisepa 1, 48309, Jõgeva, Estonia
² Aalborg University, Department of Chemistry and Bioscience, Fredrik BajersVej 7H, 9000 Aalborg, Denmark
³ Estonian Crop Research Institute, Department of Agrotechnology, J. Aamisepa 1, 48309, Jõgeva, Estonia
⁴ Estonian University of Life Sciences, Institute of Agricultural and Environmental Sciences, Kreutzwaldi ⁵, 51014 Tartu, Estonia
5University of Vienna, Department of Food Chemistry and Toxicology, Währinger Straβe 38, 1090, Wien, Austria
*Correspondence: elina.akk@etki.ee

Abstract:

The aim of the field experiments was to compare the effect of nitrogen rates and intercropping on the occurrence of Fusarium spp. in barley kernels. The experiments were performed in Central Estonia (58 ̊33´N, 25 ̊34´E) in 2009 and 2010. The composition of fungi in spring barley kernels was found through isolation and subsequent sequence analyses of the internal transcribed spacer (ITS) region and morphological features. During the study, 13 species of micro-fungi were identified in the grain samples. The most common species of fungi found in barley were Fusarium avenaceum, Fusarium poae, as well as Phoma pinodella. The compositions of pathogenic fungi on Estonian barley kernels were affected by the level of nitrogen fertilization and growing on barley-pea intercropping. The study showed tendencies that barley-pea intercropping had fewer occurrences of Fusarium species than sole barley.

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187-190 L. Hanni and A. Luik
Parasitism of raspberry beetle (Byturus tomentosus F.) larvae in different cropping techniques of red raspberry
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Parasitism of raspberry beetle (Byturus tomentosus F.) larvae in different cropping techniques of red raspberry

L. Hanni¹ and A. Luik²

¹Polli Horticultural Research Centre, Institute of Agricultural and Environmental Sciences,Estonian University of Life Sciences, Viljandi county, Karksi–Nuia, Polli, 69104, Estonia;e-mail: liina.hanni@emu.ee
²Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences,Kreutzwaldi St. 64, 51014, Tartu, Estonia

Abstract:

Raspberry beetle (Byturus tomentosus F.) is the major pest in raspberry in Estonia and throughout Europe. The parasitism rate of raspberry beetle larvae was studied in different cropping systems and in wild raspberry. In the raspberry plantation two intercropping systems were used: intercropping with 7 herbs and with black currant. The control variant was monocropping. Larvae from wild raspberries were collected from a clear cut area in the neighbourhood of the plantation. In the monocropping area the larval parasitism rate was less than 5%. The intercropping of raspberries with herbs increased the larval parasitism rate (9.4%), while in the intercropping with black currant, it decreased (2.2%). Larvae from wild raspberry were the most parasitized (26.1%). Further investigation is needed to explain species composition of parasitoids in raspberry beetle larvae.

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