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Nitrogen Response and Uptake of Sweet Corn Grown on Clay Loam Soil |
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| รหัสดีโอไอ | |
| Creator | Chattanaporn Kueanoon |
| Title | Nitrogen Response and Uptake of Sweet Corn Grown on Clay Loam Soil |
| Contributor | Sainam Udpuay, Piyanun Wiwatwittaya |
| Publisher | Department of Agriculture |
| Publication Year | 2567 |
| Journal Title | Thai Agricultural Research Journal |
| Journal Vol. | 42 |
| Journal No. | 1 |
| Page no. | 2-13 |
| Keyword | nitrogen, phosphate, potash, nutrient use efficiency, nutrient uptake |
| URL Website | tci-thaijo.org/index.php/thaiagriculturalresearch |
| Website title | Thai Agricultural Research Journal |
| ISSN | 3027-7272 |
| Abstract | Suitable nitrogen fertilizer management can increase yields and reduce chemical fertilizer uses but the existing nitrogen fertilizer recommendation for sweet corn production is not appropriate for site-specific recommendation. This study aimed to investigate nitrogen response and uptake of sweet corn grown on clay loam soil at Uthai Thani province in 2017. Treatments were laid out in a randomized complete block (RCB) with four replicates. The treatments consisted of six levels of nitrogen at the rates of 0, 8, 16, 24, 32 and 40 kg N/rai, while fertilizer application for phosphate and potash was 1.0 times of the soil test recommended rate. Results showed that the response of unhusked ear weight (Y) of Hybrix 3 cultivar to nitrogen application rate (x) grown in clay loam soil with low soil organic matter (1.34%) at Uthai Thani province could be expressed as a quadratic equation, by Y=-0.6989x2+44.985x+2803; R2=0.9106. Moreover, the result of economic return analysis by VCR method showed that nitrogen fertilizer application at the rate of 16 kg N/rai could maximize the highest return. The amounts of total nitrogen uptake in plant were 25.7, 3.7 and 23.7 kg N, P and K/rai, respectively, while the amounts of total nitrogen lost by yield removal were 10.6, 1.8 and 7.8 kg N, P and K/rai, respectively. Using proper rate of nitrogen fertilizer can efficiently increase yield of sweet corn grown on clay loam soil at Uthai Thani province. |
