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Effect of Potash Fertilizer on Growth and Yield of Maize (Zea mays L.) in Clay Loam Soil |
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| รหัสดีโอไอ | |
| Creator | Sainam Udpuay |
| Title | Effect of Potash Fertilizer on Growth and Yield of Maize (Zea mays L.) in Clay Loam Soil |
| Contributor | Chattanaporn Kueanoon, Nutchanart Tanwan, Nichakarn Thuenprom |
| Publisher | Department of Agriculture |
| Publication Year | 2565 |
| Journal Title | Thai Agricultural Research Journal |
| Journal Vol. | 40 |
| Journal No. | 3 |
| Page no. | 307-320 |
| Keyword | maize, potash fertilizer, clay loam soil |
| URL Website | https://at.doa.go.th/journal |
| Website title | Thai Agricultural Research Journal |
| ISSN | 0125-8389 |
| Abstract | The objective of this research was to investigate the effect of potash fertilizer rates on growth and yield of two maize varieties in clay loam soils. The field experiment was conducted for two consecutive years (2017 to 2018) under rain-fed condition at farmer's field in Phetchabun Province. . The objective of this study was to evaluate the growth and yield responses of two hybrid maize varieties to different potash fertilizer rates in clay loam soils. A factorial experiment with four replications consisting of two hybrid maize varieties, namely Nakhon Sawan 3 (NS 3) and Pacific 339 (PAC 339), and six levels of potash fertilizers (0, 5, 10, 15, 20 and 25 kg K2O/rai) was conducted. In all treatments, nitrogen and phosphate fertilizers were applied in accordance with soil analysis results at the rates of 15 kg N/rai and 5 kg P2O5/rai, respectively. Results showed that the interaction effect of variety and potash fertilizer was not significant on growth, yield and yield components of maize. However, the application of six levels of potash fertilizers resulted in statistically difference on shelling percentage and grain yield. Fresh weight, shelling percentage, grain yield and harvest index of Pacific 339 were higher than those of Nakhon Sawan 3, while the potassium fertilizer rate of 5 kg K2O/rai were optimum for both maize cultivars and the economic return. Therefore, growing of Pacific 339 hybrid maize and fertilizing at the recommendation rate of 15-5-5 kg N-P2O5-K2O/rai was a suitable practice for maize production in clay loam soils at Phetchabun Province. |
