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Full-Text Articles in Life Sciences
Lincoln South Rotary Program, February 2010 [Lincoln, Nebraska, Usa]: Global Food Security--Intsormil, Elvis Heinrichs
Lincoln South Rotary Program, February 2010 [Lincoln, Nebraska, Usa]: Global Food Security--Intsormil, Elvis Heinrichs
Elvis A. Heinrichs
Short Heinrichs spoke to the Lincoln South Rotary Club in February 2010 about global food security. What is food security? The availability of food and access to it. Many countries have food available but the population has no access to it. Heinrichs gave the group some sobering statistics regarding hunger in the world. Nine hundred forty-seven million people in the world are undernourished. One hundred forty-six billion kids under age 5 are underweight. One in seven people are hungry, and one in six people do not have safe drinking water. Ten million kids die each year from hunger related causes. …
Nuevas Variedades De Sorgo “Bmr” En America Central Y Haiti, René Clará Valencia, Bill Rooney, Elvis Heinrichs, Ostilio Portillo
Nuevas Variedades De Sorgo “Bmr” En America Central Y Haiti, René Clará Valencia, Bill Rooney, Elvis Heinrichs, Ostilio Portillo
Elvis A. Heinrichs
Objectivos Identificar las mejores variedades “bmr” para las condiciones de cada país. Reproducir y transferir semilla de las mejores variedades en cantidades suficientes para ponerlas accesibles a todos los agricultores. Demostrar que estas nuevas variedades “bmr” son más nutritivas que las tradicionales y capaces de producir más alimentos para la población. Generalizar el uso de estas variedades para poder fortalecer la seguridad alimentaria de los países participantes.
Iron Fertilization Of Kentucky Bluegrass, David Wehner, Jean Haley
Iron Fertilization Of Kentucky Bluegrass, David Wehner, Jean Haley
David J. Wehner
Iron applications are sometimes used to enhance the color (darker green) of turfgrass stands even when iron is not deficient. A study was conducted to determine the feasibility of replacing a portion of the total yearly N applied to Kentucky bluegrass (Poa pratensis L.) with iron. Turfgrass response to iron chelate (Sequestrene 330) applications at 2.2 kg Fe ha-1 in combination with three liquid-applied N sources (urea, Formolene, and FLUF) at 25 kg N ha-1 was compared to turf response from applications of the N sources at 49 kg N ha-1. Iron was substituted for …
Models For Predicting The Lower Limit Of The Canopy-Air Temperature Difference Of Two Cool Season Grasses, Dennis Martin, David Wehner, C. Throssell
Models For Predicting The Lower Limit Of The Canopy-Air Temperature Difference Of Two Cool Season Grasses, Dennis Martin, David Wehner, C. Throssell
David J. Wehner
Estimation of the lower limit of the canopy-air temperature differential, (Tc–Ta)LL, is required for calculation of an empirically-based crop water stress, index. This research determined the complexity of model needed for accurate estimation of (Tc–Ta)LL for several field grown cultivars of Kentucky bluegrass (Poa pratensis L.) and for creeping bentgrass (Agrostis stolonifera L. var. palustris (Huds.) Farw.). Regression models using vapor pressure deficit of the air (VPD), net radiation load (Rn), and wind speed (WS) were developed for predicting (Tc–Ta …
Melamine/Urea And Oxamide Fertilization Of Kentucky Bluegrass, David Wehner, Dennis Martin
Melamine/Urea And Oxamide Fertilization Of Kentucky Bluegrass, David Wehner, Dennis Martin
David J. Wehner
The commercial lawn care industry represents a large market for N sources. A formulated melamine (2,4,6-triamino-s-triazine) plus urea combination (MLU) (45% melamine by weight) and oxamide were evaluated for use by the lawn care industry by comparing turfgrass response from these fertilizers to that from urea, sulfur coated urea (SCU), ureaformaldehyde (Nitroform), and a non-fertilized check. Fertilizers were applied four times per year to field plots of Kentucky bluegrass (Poa pratensis L.) growing on a Flanagan silt loam (fine, montmorillonitic, mesic Aquic Argiudoll) at a rate of 49 kg N ha-1 per application. Color ratings and clipping weights were determined …