Boron in papaya plant grown under various soil management of papaya farms in northeast Thailand
2004
Mongkon Ta-oun(Khon Kaen University, Khon Kaen (Thailand). Faculty of Agriculture. Department of Land Resources and Environment) | Patcharee Therajindakajorn(Khon Kaen University, Khon Kaen (Thailand). Faculty of Agriculture. Department of Land Resources and Environment) | Santibhab Panchaban(Khon Kaen University, Khon Kaen (Thailand). Faculty of Agriculture. Department of Land Resources and Environment) | Suttipong Pruangka(Rajabhat Udonthani University, Udon Thani (Thailand). Faculty of Science and Technology)
It was found, during the investigation of boron status under different water and soil management, that applying chemical fertilizer grades 15-15-15 or 16-16-8 or 13-13-21 associated with organic fertilizer and borax compound increased leaf and petiole of papaya grown in Northeast Thailand. Field survey associated with semi-structured interview was applied in this regard. The study revealed that papaya plant grown on loam and loamy sand soils contained boron in leave and petiole 47.57 and 29.85 ppm, respectively. In the case of nil application of borax compound, boron found were 20.42 and 18.11 ppm. However, applying only chemical fertilizers at the rates of very low, low, average, and high applications in loam soil showed the trend to decrease boron content in petiole. They were 31.90, 30.19, 18.11, and 16.68 ppm, respectively. Mulching effects did not show significant difference regarding boron content in petiole. Basin irrigation associated with sprinkler irrigation showed higher boron content in petiole (24.49 ppm) than sprinkler irrigation only (20.62 ppm). It was also found that, papaya grown under the condition of fallowed up cultivation of soil management showed lower contents of boron in leave and petiole than those grown under inter-cropping system (papaya plant and fruit tree) and those grown on paddy bund.
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