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Table 3 Fresh Yield (kg/rai) of cassava at 12 months after planting in Wang Hai soil series at Nakhon
Sawan Province (rainy season 2017/2018)
Nitrogen (B) Cassava variety Average
(kg N/rai) Kasetsart 50 Rayong 11 (B)

0 3,095 2,995 3,045 b
3,724 a
4
3,829
3,619
8 3,657 3,617 3,637 a
12 3,848 3,343 3,595 a
16 3,515 3,924 3,719 a

Average (A) 3,589 3,499
CV (A) = 10.6 % CV (B) = 9.6% Variety (A) = ns Nitrogen (B) = * (AxB) = ns
Means in a column followed by the same letter are not significantly different at 5% level by DMRT,
* : Significant at 5% level, ns : Not significant
Table 4 Starch Content (%) of cassava at 12 months after planting in Wang Hai soil series at Nakhon
Sawan Province (rainy season 2017/2018)
Nitrogen (B) Cassava variety Average
(kg N/rai) Kasetsart 50 Rayong 11 (B)
0 25.1 27.5 26.3
4 24.9 27.2 26.1
8 25.6 27.1 26.3
12 24.6 26.6 25.6
16 24.4 27.1 25.7
Average (A) 24.9 b 27.1 a
CV (A) = 3.1 % CV (B) = 3.4% Variety (A) = * Nitrogen (B) = ns (AxB) = ns
Means in a column followed by the same letter are not significantly different at 5% level by DMRT,
* : Significant at 5% level, ns : Not significant

Table 5 Starch Yield (kg/rai) of cassava at 12 months after planting in Wang Hai soil series at Nakhon
Sawan Province (rainy season 2017/2018)
Nitrogen (B) Cassava variety Average
(kg N/rai) Kasetsart 50 Rayong 11 (B)
0 777 914 946
4 864 934 899
8 858 948 903
12 851 891 871
16 857 1,064 960
Average (A) 841 950
CV (A) = 13.4 % CV (B) = 13.0% Variety (A) = ns Nitrogen (B) = ns (AxB) = ns
Means in a column followed by the same letter are not significantly different at 5% level by DMRT, ns : Not significant

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