Section 3 (Crop Management)

Maize-rice rotation in Thailand
Table 1. Yield, production costs, income and profit for maize and second rice in farmers' fields of
Phitsanulok in 2002.
Item Maize Second rice
Production cost (baht ha -1 ) 13,125 13,750
Grain yield (kg ha -1 ) 5,738 4,875
Price (baht kg -1 )* 4.50 3.90
Income (baht ha -1 ) 25,821 19,012
Profit (baht ha -1 ) 12,696 5,262
* Price at Farmers’ field of Phitsanulok in April 2002.
Remarks: 1 US$ = 42 Baht (April 2002)
Table 2. Kernel yield at 15% MC and yield components of 21 maize cultivars grown after rice at
PSL FCES in 1998-1999.
Maize cultivar
Kernel yield
(kg ha -1 )
Kernel number
ear -1
100 kernel weight
(g)
Total ears ha -1
Pioneer 3012 8,281 a 582 a 28.7 c-h 54,556 b
Cargill 727 7,931 ab 546 ab 29.0 c-g 54,438 b
Pacific 700 7,563 abc 505 ab 30.7 a-d 53,888 b
CP-DK 888 7,469 bc 451 efg 27.5 e-h 71,219 a
Cargill 919 7,438 bc 550 ab 27.6 e-h 53,888 b
Pioneer 3013 7,394 bcd 531 abc 30.1 a-e 53,888 b
Cargill 922 7,238 b-e 512 bcd 31.4 abc 53,444 b
G 5449 7,138 b-f 506 b-e 28.2 d-h 59,219 b
Pacific 300 7,069 c-g 513 bcd 29.8 a-f 53,331 b
G 5445 6,938 c-h 446 hi 32.4 a 54,994 b
Cargill 7118 6,925 c-h 536 abc 27.4 fgh 53,888 b
Cargill 717 6,844 c-h 545 ab 27.1 fgh 55,331 b
Cargill 7140 6,775 c-h 496 b-e 26.5 h 53,663 b
NS1 6,700 c-h 466 d-g 29.5 b-f 61,363 b
NS72 6,556 d-h 502 b-e 26.7 gh 54,556 b
SW1 6,494 e-h 459 d-g 29.3 c-g 54,438 b
SW 3601 6,356 f-I 460 d-g 28.7 c-h 54,438 b
G 5431 6,244 ghi 417 g 32.1 ab 54,219 b
Pacific 328 6,194 hi 481 c-f 27.9 e-h 52,556 b
CP 222 5,594 hi 431 fg 28.7 c-h 53,888 b
NST 89101 5,369 j 422 g 26.2 h 56,106 b
CV (%) 5.2 5.0 3.9 5.7
Values in a column followed by the same letter are not significantly different by using DMRT(at p