نتایج جستجو برای: spring maize
تعداد نتایج: 88301 فیلتر نتایج به سال:
The effects of herbicide management of genetically modified herbicide-tolerant (GMHT) beet, maize and spring oilseed rape on the abundance and diversity of soil-surface-active invertebrates were assessed. Most effects did not differ between years, environmental zones or initial seedbanks or between sugar and fodder beet. This suggests that the results may be treated as generally applicable to a...
We monitored soil respiration (Rs), soil temperature (T) and volumetric water content (VWC%) over four years in one typical conventional and four alternative cropping systems to understand Rs in different cropping systems with their respective management practices and environmental conditions. The control was conventional double-cropping system (winter wheat and summer maize in one year--Con.W/...
Low temperature at stand establishment and high temperature at reproductive stage are involved in reduction of grain yield of spring maize. A field study was therefore conducted to evaluate different physiological strategies for improving performance of spring maize under temperature extremes. Seed priming and foliar spray with 3% moringa leaf extract (MLE) and 100 mg L-1 kinetin solution alone...
The Farm Scale Evaluations of genetically modified herbicide-tolerant crops (GMHT) were conducted in the UK from 2000 to 2002 on beet (sugar and fodder), spring oilseed rape and forage maize. The management of the crops studied is described and compared with current conventional commercial practice. The distribution of field sites adequately represented the areas currently growing these crops, ...
Water use efficiency (WUE) reflects the coupling of the carbon and water cycles and is an effective integral trait for assessing the responses of vegetated ecosystems to climate change. In this study, field experiments were performed to examine leaf WUE (WUEleaf) in response to changes in CO2 concentration and other environmental variables, including soil moisture and air temperature. We al...
Intercropping of silage maize (Zea mays L.) and alfalfa (Medicago sativa is not a common practice because generally reduces grain biomass yield. The objective this research was to evaluate the productivity profitability maize–alfalfa intercropping, with goal establish increase in first year production. experiment conducted Fargo Prosper, ND, USA, 2014–2017. design randomized complete block four...
Populations of honey bees and other pollinators have declined worldwide in recent years. A variety of stressors have been implicated as potential causes, including agricultural pesticides. Neonicotinoid insecticides, which are widely used and highly toxic to honey bees, have been found in previous analyses of honey bee pollen and comb material. However, the routes of exposure have remained larg...
New Zealand dairy farmers are increasingly using supplementary feeds in an attempt to overcome the quantitative and nutritional limitations of pasture. The use of rolled maize grain and pasture silage supplements was evaluated on a farmlet basis for two seasons. Supplementary feeding resulted in 88 and 82 g milksolids (MS)/kg dry matter (DM) at stocking rates of 3.24 and 4.48 Friesian cows/ha r...
The aim of this study was to assess the effects of strip cropping and different weed control methods on the yield and yield structure of dent maize, narrow-leafed lupin and spring oat. A split-plot design with four replications was conducted in 2008-2010. The following factors were analysed in the experiment: I. Cultivation method – sole cropping and strip cropping; II. Weed control method ...
"The Origin and Behavior of Mutable Loci in Maize," by Barbara McClintock, was published in 1950 in the Proceedings of the National Academy of Sciences [2] of the United States of America. McClintock worked at the Cold Spring Harbor Laboratory [3] in Laurel Hollow, New York, at the time of the publication, and in the article she describes her discovery of transposable elements in the genome [4]...
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