Jaidee, R. and Polthanee, A. and Saenjan, P. (2012) Growth and yield of soybean cultivars as affected by ground water levels and phosphorus rates grown under greenhouse and field conditions. Australian Journal of Crop Science, 6 (1). pp. 81-92.
![[img]](http://eprints.icrisat.ac.in/style/images/fileicons/application_pdf.png)
|
PDF
- Published Version
| Preview |
Abstract
Experiments were conducted under greenhouse and field conditions to investigate the effects of P application rates and the responses of soybean cultivars to different ground water levels. The results of the greenhouse experiment showed that ground water level recession reduced root dry weight, root length density, shoot growth, yield components, and consequently, the grain yields of KKU74 and SJ5cultivars. Rapid ground water recession affected soybean yield reduction more than slow recession. P application increased both root and shoots growth, and tended to produce higher grain yields than the absence of P application. With P application, KKU74 had a higher grain yield than SJ5. The results of field conditions showed that P application rates had no significant effect on leaf area, LAI, shoot dry weight and the grain yields of the three soybean cultivars. However, KKU74 with P applications at the maximum rate of 58 kg p2o5ha-1 tended to produce the highest grain yields. Under both greenhouse and field conditions, KKU74 with P application had the highest grain yields, shoot growth and root length density (lower than the 75-cm depth from the soil’s surface) with ground water level recession. These results indicate that this cultivar is better adapted to water stress and appropriate to growing after rice in a paddy field without irrigation. However, it is suggested that the ground water level before planting should be higher than 80 cm depth from the soil’s surface
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Ground water level, phosphorus, root length density, leaf water potential, stomatal resistance, soybean, yield. |
| Author Affiliation: | 1Department of Plant Science and Agricultural Resources, Faculty of Agriculture, Khon Kaen University, 40002, Thailand |
| Subjects: | Plant Protection Statistics and Experimentation > Experimentation |
| Divisions: | Soyabean |
| Depositing User: | Mr. SanatKumar Behera |
| Date Deposited: | 11 Mar 2012 14:13 |
| Last Modified: | 11 Mar 2012 14:13 |
| Official URL: | http://www.cropj.com/january2012.html |
| URI: | http://eprints.icrisat.ac.in/id/eprint/3774 |
Actions (login required)
 |
View Item |
