نتایج جستجو برای: technical agronomic factors
تعداد نتایج: 1228540 فیلتر نتایج به سال:
During the re-eutrophication of Lake Erie, dissolved reactive phosphorus (DRP) loading and concentrations to the lake have nearly doubled, while particulate phosphorus (PP) has remained relatively constant. One potential cause of increased DRP concentrations is P stratification, or the buildup of soil-test P (STP) in the upper soil layer (<5 cm). Stratification often accompanies no-till and mul...
It has long been concerned how crop water use efficiency (WUE) responds to climate change. Most of existing researches have emphasized the impact of single climate factor but have paid less attention to the effect of developed agronomic measures on crop WUE. Based on the long-term field observations/experiments data, we investigated the changing responses of crop WUE to climate variables (tempe...
Biochar production and use are part of the modern agenda to recycle wastes, and to retain nutrients, pollutants, and heavy metals in the soil and to offset some greenhouse gas emissions. Biochars from wood (eucalyptus sawdust, pine bark), sugarcane bagasse, and substances rich in nutrients (coffee husk, chicken manure) produced at 350, 450 and 750°C were characterized to identify agronomic and ...
Today, natural colorants are emerging globally due to the fact that they are safer and more environmentally-friendly. Natural dyes have been employed in dyeing Persian carpet piles for many years. In this study, the dried Achillea was used for dyeing wool yarns. The Iranian wool yarn was scoured, mordanted using Cu, Sn, Al salts and then dyed with different amounts of dried Achillea powder. Tag...
The first generation of biotechnology products commercialized were crops focusing largely on input agronomic traits whose value was often opaque to consumers. The coming generations of crop plants can be grouped into four broad areas each presenting what, on the surface, may appear as unique challenges and opportunities. The present and future focus is on continuing improvement of agronomic tra...
A portfolio of agricultural practices is now available that can contribute to reaching European mitigation targets. Among them, the management of agricultural soils has a large potential for reducing GHG emissions or sequestering carbon. Many of the practices are based on well tested agronomic and technical know-how, with proven benefits for farmers and the environment. A suite of practices has...
<p>Multivariate and ordered Probit models were used to study the determinants of adoption extent agronomic practices among cacao farmers in Nariño, Colombia, with data from 353 mountain region. Results suggest that farmers’ decisions are made on a joint basis, further validating use multivariate approach. The presence illegal crops creates strong disincentives affect possibility more sign...
Purpose. To reveal the adaptive potential of stem lettuce varieties (Lactuca sativa L. var. angustana Irish) according to parameters yield, ecological plasticity, stability and adaptability in conditions Western Forest-Steppe Ukraine. Methods. The plasticity yield was evaluated according S. A. Eberhart W. Rassel method. Soil climatic research area were generally favorable for growth developmen...
Drilling industry and its technical services are among the complex and advanced technology-based industries in the cycle of oil exploration and production. In this regard, the logging services role as one of the pillars of technical services is very important due to technological complexity and the importance of the results in the evaluation of oil and gas reservoirs. The complexity had caused ...
Economis growth is one of the main factors for evaluating the performance of governments. Economic growth itself is influenced by other factors that have been addressed in growth theories. Among the factors examined in growth theories, technical progress is of particular importance due to its long-term effects on growth. In recent growth models, the technological progress considered an endogeno...
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