By Donald L. Sparks (Ed.)
Advances in Agronomy remains to be well-known as a number one reference and a chief resource of the most recent and most sensible learn in agronomy. As constantly, the subjects coated are different and exemplary of the panoply of material handled by means of this long-running serial. quantity sixty seven comprises 4 finished and well timed studies on subject matters within the crop and soil sciences. bankruptcy 1 addresses probably the most lively parts in agronomic research--precision agriculture. bankruptcy 2 is a considerate assessment on floor cost and solute interactions in soils. bankruptcy three completely covers advances within the use of molecular genetics to reinforce abiotic/edaphic rigidity resistance in turfgrass. bankruptcy four is an invaluable assessment on a subject that's of serious curiosity to agronomists--allelopathy.
Read or Download Advances in Agronomy, Vol. 67 PDF
Best scientific-popular books
Within the Homeric Epics, very important references to express self sufficient structures and mechanisms of very complicated know-how, comparable to automata and synthetic intelligence, in addition to to nearly smooth tools of layout and creation are integrated. no matter if these good points of Homeric technological know-how have been simply poetic strategies (which on many events doesn't clarify the spectacular information of layout and manufacture, just like the ones incorporated within the current volume), they appear to turn out that those achievements have been good inside human potential.
- Atmospheric Pollution: 15th: International Colloquium Proceedings (''Science of the Total Environment'')
- Sporting News Today - 22 January 2011
- Woodworker's Journal - March-April 2011
- Understanding and Responding to the Terrorism Phenomenon: A Multi-Dimensional Perspective
Extra info for Advances in Agronomy, Vol. 67
This is a preventative approach to protect against yield loss because of nutrient deﬁciency and focuses on building soil fertility. Once the initial buildup is achieved, then the need for further soil testing is eliminated if fertilizer application adheres to the maintenance application (Dahnke and Olson, 1990). Applying this soil testing and fertilizer management philosophy to precision management, the goal would be to either increase the soil test levels of a ﬁeld through fertilization or decrease the soil test levels through crop removal to the maintenance level and then fertilize based on crop removal as indicated by yield maps.
More consideration needs to be given to map accuracy and its implication for precision management. c. High-Resolution Sensing The importance of sensing technology to precision agriculture was discussed earlier. The improvement of high-resolution sensing over interpolation of sampling points is evident when yield mapping is considered. For example, sampling 22 FRANCIS J. PIERCE AND PETER NOWAK intensity in a yield map is orders of magnitude higher than that used in grid sampling. The exercise of grid sampling a yield map would reveal the weaknesses inherent in interpolation of spatial sample points.
The potential direct economic beneﬁt of precision pest management to farmers is a reduction in chemical/nonchemical pest management costs, crop damage, or both due to more efﬁcacious or efﬁcient application of pest control measures. A reduction in pesticide use, however, does not translate into proﬁt if the cost of obtaining information about pest populations and distribution exceeds the savings (Forcella, 1993; NRC, 1997). Environmental beneﬁts are presumed to result from a reduction in pesticide usage, particularly in sensitive environments, although the results of the few studies on the potential of precision farming to provide environmental beneﬁts have been inconclusive regarding its effect on pesticide use (USDA-ERS, 1997).
Advances in Agronomy, Vol. 67 by Donald L. Sparks (Ed.)