Question
In weed management, which term refers to the reduction
of weed seed bank by encouraging weed germination and then destroying them before crop sowing?Solution
False seedbed involves land preparation and irrigation to stimulate weed emergence. Once weeds germinate, they are destroyed before crop sowing, thus reducing weed pressure during crop growth.
18Â Â Â Â Â Â Â Â Â Â Â Â 29 Â Â Â Â Â Â Â Â Â Â Â Â Â Â 51 Â Â Â Â Â Â Â Â 84 Â Â Â Â Â Â Â Â 128 Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 182
If 4 10 16 26 x 50
Then find the value of (x² - 1) + ( x² + 1).
...4, 8, 24, ?, 840, 9240
32, 65 , 196, 785, ? , 23557
16 18 14 20 12 ?
...362Â Â Â 284Â Â Â 393Â Â Â Â 451Â Â Â Â 144Â Â Â Â Â 221
...24  12  18  ?  157.5  708.75  3,898.125
Choose the number which is different from others in the group.
21 11.5 13 ? 45.5 116.75
...31   48    67    90   ?      150