The most economical means of managing the ‘tungro virus’ disease in rice is:
Use of resistant varieties is the most economical method for managing tungro virus.
I. 2x² - 11x + 12 = 0
II. 12y² + 29y + 15 = 0
I. 7x² + 27x + 18 = 0
II. 19y² - 27y + 8 = 0
I. x + 1 = 3√ 9261
II. y + 1 = √ 324
I. 3p² + 13p + 14 = 0
II. 8q² + 26q + 21 = 0
I. x2 + 24x + 143 = 0
II. y2 + 12y + 35 = 0
I. 2x2- 5x - 33 =0
II. 2y2+ 5y - 25 = 0
I. x² - 33x + 270 = 0
II. y² - 41y + 414 = 0
I. y² + y – 56 = 0
II. 2x² + 11 x – 40 = 0
I. p2 - 19p + 88 = 0
II. q2 - 48q + 576 = 0
I. 2x² + 11x + 12 = 0
II. 2y² + 19y + 45 = 0
