Want this question answered?
Be notified when an answer is posted
They did not have a zero.
The mean deviation of a set of observations is always zero and so conveys no information whatsoever!
A society that cannot compute fractions and has no concept of "zero" is at an instant disadvantage compared to one that can and does.
no disadvantage
Advantage is the opposite of disadvantage.
In Canada, the Father of Zero Tillage is Jim McCutcheon. But one of the earlier proponents of no-till might have been Masanobu Fukuoka (Japan). Masanobu Fukuoka wrote books and travelled and lectured extensively on his methods of natural farming.
They did not have a zero.
One disadvantage of conservation tillage methods is that it can lead to increased weed pressure, as reduced or no-till practices may not sufficiently disturb the soil to control weeds effectively. This can require additional weed management strategies to be implemented.
Jethro Tull was father of tillage.
Minimum tillage involves disturbing the soil to a lesser extent compared to conventional tillage practices, while reduced tillage aims to further minimize soil disturbance and maintain more residue cover on the soil surface. Minimum tillage may involve shallow tillage to create a seedbed, while reduced tillage may only disturb the soil in the planting row or use specialized equipment like no-till drills.
The disadvantage is that the mean deviation of a set of data is always zero and so does not provide any useful information.
tillage is which you use a tool to make the soil good
Some fields are for grazing , others are for tillage to sow new crops.
1- Shelter Belts. (Planting trees or rows of trees to stop wind erosion.) 2- Strip cropping. (Seeding fields in strips and only cultivating the unseeded strips to avoid erosion of the whole field.) 3-Zero-tillage farming. (Using zero-til seeding implements to avoid tillage of the land, thus avoiding wind and soil erosion.)
The objective of primary tillage is to attain a reasonable depth of soft soil, incorporate crop residues, kill weeds, and to aerate the soil. Secondary tillage is any subsequent tillage, to incorporate fertilizers, reduce the soil to a finer tilth, level the surface, or control weeds.
there is difficulty in the mathematical opperations there is no zero
October 5, 2011