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Irrigation is the source of biological contamination of lettuce produced by conventional agriculture, where drip irrigation is suitable so that water does not contact the leaves. 90% of the lettuces grown organically in the open air had slugs, controllable with traps based on an attractant. The analysis of chemical residues on the leaves showed 48% positive samples. Although 92% of them were below...

The characterization of the pathogen populations is the first step, unavoidable, to identify its genetic and pathogenic nature and, in paralell, identify the genes in rice, which give it resistance to the disease. With this information available, the resistance alleles can be introduced into improved cultivars, giving them greater and more durable resistance to the presence of the pathogen in favo...

Banana cultivation is of great economic and social importance in several Latin American countries and the most important phytosanitary problem affecting it is black Sigatoka. The objective of the project was to produce banana and plantain varieties resistant to the disease, generated by genetic transformation accompanied by a system of rapid assessment of resistance under controlled conditions. Fo...

Sources of wheat rust resistance were sought in the Southern Cone where there are two epidemiological zones separated by the Andes Mountains. Leaf rust (Puccinia triticina) and striated rust (P. striiformis) are the most important diseases. The population of both pathogens is dynamic with frequent changes in virulence that reduce the duration of resistance of commercial cultivars. Adult plant resi...

Starting in 1999, Guatemala, El Salvador, Honduras and Costa Rica, began trials of clones of F1 hybrids of Coffea arabica, coming from the long cooperation of CIRAD and IRD with PROMECAFE and CATIE, specifically from a selection of trees made in hybrid descendants whose purpose was to develop new varieties, more vigorous than the traditional ones, crossing the latter with wild varieties from Ethio...

The control of black Sigatoka in banana crops was studied through four lines of work: High-density cultivation and use of fungicides. The higher density increased the height of the plants, lengthened the production cycle and contributed to weed control. Bunch weight was lower without affecting the number and size of fruits. Neither infection nor fungicide use increased with the higher density. Pro...

Work was done on improving the disease resistance of Andean fickle bean, susceptible to anthracnose and common mosaic. These beans are unique in the world, appreciated for their quality. They are important in smallholder agriculture along with corn. Nurseries were created with new commercial genotypes selected through yield evaluation, adaptation between 1000 to 1800 masl and reaction to diseases....

El cultivo de la palma de aceite es uno de los de mayor potencial económico en América Latina y varios países intentan incrementar su participación en el mercado mundial. Una de las estrategias es desarrollar tecnologías que reduzcan el efecto de plagas y enfermedades en particular la pudrición de cogollo.  Aunque el objetivo del proyecto fue la búsqueda de un marcador molecular asociado a...

 Deforestation and irrational use of forest resources threaten the genetic diversity of many medicinal plants whose potential is unknown. The genus Smilax is an example of this situation and this project contributes to the valuation of the forest as a productive system and to its sustainable management. Based on collections and nurseries, the taxonomy, ecology, chemical composition, transformatio...