El control eficaz del pulgón amarillo del sorgo [complejo Melanaphis sacchari/M. sorghi; (Mss)] depende del tamaño de la población y el estado fenológico del cultivo. - Primera detección:¿Mi chacra está en riesgo?. -- Cuidado hay otros pulgones en el cultivo de sorgo. -- Referencias para el monitoreo. -- Aspectos importantes para el manejo y control de Mss. -- Identificación de individuos y estado.
ABSTRACT.- A nodule-inhabiting Paenibacillus sp. strain (UY79) isolated from wild peanut (Arachis villosa) was screened for its antagonistic activity against diverse fungi and oomycetes (Botrytis cinerea, Fusarium verticillioides, Fusarium oxysporum, Fusarium graminearum, Fusarium semitectum, Macrophomina phaseolina, Phomopsis longicolla, Pythium ultimum, Phytophthora sojae, Rhizoctonia solani, Sclerotium rolfsii, and Trichoderma atroviride). The results obtained show that Paenibacillus sp.
ABSTRACT.- Long-term agricultural experiments (LTE) are essential to detect cumulative treatment effects on soil properties and to design sustainable production systems. However, to ensure high quality of long-term soil data and their correct interpretation, several analytical issues regarding the accuracy and analytical laboratory bias need to be considered.
ABSTRACT.- Long-term agricultural experiments (LTE) are essential to detect cumulative treatment effects on soil properties and to design sustainable production systems. However, to ensure high quality of long-term soil data and their correct interpretation, several analytical issues regarding the accuracy and analytical laboratory bias need to be considered.
The objective of the present paper is to review and update the experimental results and the model predictions about soil erosion and SOC content changes in Argiudolls of Uruguay.
Contenido. Síntesis de la Situación Agroclimática de Enero-- Perspectivas Climáticas Trimestrales elaboradas por el IRI de la Universidad de Columbia (Más información puede encontrarse en el sitio del IRI:http://www.iri.columbia.edu) -- Índice de Vegetación (NDVI) -- Precipitaciones -- Porcentaje de Agua Disponible (PAD) -- Agua No Retenida (ANR) -- Índice de Bienestar Hídrico (IBH) -- Perspectivas Climáticas Feb-Mar-Abr elaboradas por el IRI de la Universidad de Columbia. Destacamos para este mes:Balance hídrico de cultivos.
ABSTRACT: Flooding is an important method for weedy rice control. The reduction of the flooding effect ongermination and initial growth of weedy rice has been observed, which compromise the efficiency of flooded rice systems. The objectives of this study were to establish a methodology for the selection of weed rice populations with flooding tolerance, to evaluate the expression of genes associated to flooding in cultivated rice, and to investigate the effect of temperature and soil depth on tolerance to flooding in weedy rice.