Question
Primary tillage is completely avoided and secondary
tillage is restricted to seedbed preparation in the row zone only. This is done in which type of tillage?Solution
Zero tillage is an extreme form of minimum tillage in which primary tillage is completely avoided and secondary tillage is restricted to seedbed preparation in the row zone only.
2,0, 9, 20, ‘?’, 714
7, 14, 42, 210, 1470, ?
6000 3002 1503 ? 378.75 191.375 97.6875
...41 48 89 137 226 ?
...31   48    67    90   ?      150
640 320 160 ? 40 20
Find the 31st term of the series 25, 29, 33……
140Â Â Â Â 300Â Â Â Â 380Â Â Â Â Â 420Â Â Â Â Â 440Â Â Â Â Â ?
...504 625 769 938 1134 ?
...14 26 50 98 194 ?
...