Father of zero tillage is
Glubler b. triplet from USA is the father of zero tillage. In zero tillage primary tillage is completely avoided and secondary tillage is restricted to seedbed prepration in the row zone only. Here 50-100% crop residue is left on soil surface.
If the sum of upstream and downstream speed is 20 km/hr and the speed of the current is 5 km/hr. Then find time taken to cover 45 km in downward?
The velocity of a boat when moving downstream is 18 km/h greater than the speed of the stream. If it takes the boat 8 hours to travel 192 km downstream,...
Ramesh rows in still water at the speed of 8 kmph to go a certain place and come back. Find his average speed for the whole journey if the river is flow...
(√3364+ √484) – √2916÷ √1296 × √36 ÷ √64 = ?
Speed of a boat in still water is 12 kmph and speed of stream is 6 kmph. A man rows to a place at a distance of 72 km and come back to starting point. T...
A boat can travel 21 km downstream in 42 min. The ratio of the speed of the boat in still water to the speed of the stream is 5: 1. How much time will t...
Speed of a Motorboat in still water is 75kmph. If the motorboat travels 150 km along the stream in 1 hour 40 minutes, then the time taken by it to cover...
Time taken by a boat to cover 180 km in downstream is the same as to cover 140 km in upstream. Find the time taken by the boat to cover 360 km in downst...
A motor boat covers a certain distance downstream in a river in 4 hours. It covers the same distance upstream in 4 hours and 30 minutes. If the speed of...
Speed of current is 25% of speed of boat in still water, if boat travelled 45 km downstream and returned back in total 12 hr. then find speed of boat i...
