- REDIA: Designing a Repository for Agriculture and Food Research DataThis work presents the rationale for developing a research data repository at INIA (Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria - Spain). It introduces the organization goals, our researcher's considerations, the domains where we will make focus on interoperability, and other notes and details about the design of the platform.
- Iniciativas de datos abiertos frente a los desafíos de la seguridad alimentaria globalIn Spanish. This preprint is a summary for the communication sent to the II Jornadas de Investigación Agraria para el Desarrollo (II Workshop of Agriculture Research for Development). The work shows the relevance of open data in order to face the challenge of global food security presenting the GODAN (Global Open Data for Agriculture and Nutrition) initiative. Then, it shows how INIA (the Spanish National Institute for Research and Technology in Agriculture and Food) is partnering GODAN, and it introduces briefly INIA's project for developing a agriculture research data repository. It ends with a call for participation in the GODAN initiative.
- Influence of organic amendments on growth, yield and quality of wheat and on soil properties during transition to organic productionA transition period of at least two years is required for annual crops before the produce may be certified as organically grown. The purpose of this study was to evaluate the effects of the three organic amendments on yield and quality of wheat (Triticum aestivum L.) and on soil properties during transition to organic production. The organic amendments were composted farmyard manure (FYMC), vermicompost and lantana (Lantana spp. L.) compost applied to soil at four application rates (60, 90, 120 and 150 kg N ha-1). The grain yield of wheat in all the treatments involving organic amendments was markedly lower (36-65 % and 23-54 % less in the first and second year of transition, respectively) compared with the mineral fertilizer treatment. For the organic treatments applied at equivalent N rates, grain yield was higher for FYMC treatment closely followed by vermicompost. In the first year of transition, protein content of wheat grain was higher (85.9 g kg-1) for mineral fertilizer treatment whereas in the second year, there were no significant differences among the mineral fertilizer treatment and the highest application rate (150 kg N ha-1) of three organic amendments. The grain P and K contents were, however, significantly higher for the treatments involving organic amendments than their mineral fertilizer counterpart in both years. Application of organic amendments, irrespective of source and rate, greatly lowered bulk density (1.14-1.25 Mg m-3), and enhanced pH (6.0-6.5) and oxidizable organic carbon (13-18.8 g kg-1) of soil compared with mineral fertilizer treatment after two-year transition period. Mineral fertilized plots, however, had higher levels of available N and P than plots with organic amendments. All the treatments involving organic amendments, particularly at higher application rates, enhanced soil microbial activities of dehydrogenase, -glucosidase, urease and phosphatase compared with the mineral fertilizer and unamended check treatments. We conclude that the application rate of 120 and 150 kg N ha-1 of all the three sources of organic amendments improved soil properties. There was, however, a 23-65% reduction in wheat yield during the two years of transition to organic production.
- Bell pepper yield and soil properties during conversion from conventional to organic production in Indian HimalayasA conversion period of at least two years is required for annual crops before produce may be certified as organically grown. There is a need for better understanding of the various management options for transitioning from conventional to organic production. The purpose of this study was to evaluate the effects of three organic amendments on growth and yield of bell pepper (Capsicum annuum L.), the benefit:cost ratio, soil fertility and enzymatic activities during conversion to organic production. The organic amendments were composted farmyard manure (FYMC), vermicompost (VC) and poultry manure (PM) along with biofertilizers [Azotobacter + Phosphorus solubilizing Bacteria (Pseudomonas striata)]. The bell pepper yield under organic management was markedly lower (33-53% and 18-40% less in first and second year of conversion, respectively) compared with conventional practice (FYMC 10 Mg ha-1 + NPK – 100:22:41.5 kg ha-1). Composted FYM 20 Mg ha-1 + biofertilizers (BF), and combined application of three organic amendments (FYMC 10 Mg ha-1 + PM and VC each 1.5 Mg ha-1 + BF) produced similar but significantly higher yield (27.9 and 26.1 Mg ha-1, respectively) of bell pepper compared with other organic amendment treatments. Composted FYM 20 Mg ha-1 + BF and combined application of three organic amendments greatly lowered soil bulk density (1.15-1.17 Mg m-3), and enhanced pH (7.1) and oxidizable organic carbon (1.2-1.3%) of soil compared with conventional practice and unamended control after a two-year transition period. However, the N, P and K levels were highest in the plots under conventional practice. Plots amended with FYMC 20 Mg ha-1 + BF had higher soil microbial activities of dehydrogenase, acid phosphatase and β-glucosidase compared with other treatments. However, the urease activity was greater in the plots under conventional practice. Among the treatments involving organic amendments alone, FYMC 20 Mg ha-1 + BF gave the highest gross margin (US $ 8237.5 ha-1) compared to other treatments. We conclude that FYMC 20 Mg ha-1 + BF was found more suitable for enhancing bell pepper growth and yield, through improved soil properties, during conversion to organic production.