By C J Baker, K E Saxton, W R Ritchie, W C T Chamen, D C Reicosky, F Ribeiro, S E Justice
This ebook is a much-expanded and up-to-date variation of a prior quantity, released in 1996 as No-tillage Seeding: technology and Practice. the bottom target is still to explain, in lay phrases, a variety of foreign experiments designed to ascertain the explanations of successes and screw ups in no-tillage. The ebook summarizes the benefits and downsides of no tillage. It highlights the professionals and cons of a number positive factors and ideas, with no selling any specific product.
Topics additional or lined in additional element within the moment version include:
soil carbon and the way its retention or sequestration interacts with tillage and no-tillage
managed site visitors farming as an accessory to no-tillage
comparability of the functionality of widespread no-tillage opener designs
the function of banding fertilizer in no-tillage
the economics of no-tillage
small-scale apparatus utilized by poorer farmers
forage cropping by way of no-tillage
a mode for chance evaluation of alternative degrees of laptop sophistication
Co-published with the meals and Agriculture association of the United international locations
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Extra info for No-tillage seeding in conservation agriculture
During tillage, driving errors by an operator are seen immediately but they are seldom sufficiently serious to show up in the subsequent crop as an area of impaired yield. With once-over spraying, errors do not show up immediately. Paraquat is the most rapid to take effect but even then it is days before mistakes become visible. Most other herbicides take at least a week to show any visible effect, by which time the crop may have been sown, making remedial action virtually impossible without adversely affecting the sown crop.
While most soil compaction occurs during the first vehicle trip over the tilled field, reduced weight and horsepower requirements associated with no-tillage can also help minimize compaction. Additional field traffic required by intensive tillage compounds the problem by breaking down soil structure. Maintenance of SOM Benefits of No-tillage contributes to the formation and stabilization of soil structure. The combined physical and biological benefits of SOM can minimize the effect of traffic compaction and result in improved soil tilth.
Clearly, slugs increase the biological risks of no-tillage. But they are relatively cheaply countered by the application of a suitable molluscicide. Other pests can increase their damage risk because of increased surface residues or decreased physical destruction by tillage machines. But then so too do many of their predators. An example of pest–drill interaction is that experienced with inverted T-shaped slots (see Chapter 4), which create subsurface soil-slot environments that are higher in soil humidity than either tilled soils or other no-tillage slots.