Impact of Arbuscular Mycorrhizal Fungi on Growth and Productivity of Sugarcane Under Field Conditions
- PDF / 1,053,529 Bytes
- 9 Pages / 595.276 x 790.866 pts Page_size
- 45 Downloads / 215 Views
RESEARCH ARTICLE
Impact of Arbuscular Mycorrhizal Fungi on Growth and Productivity of Sugarcane Under Field Conditions Suchat Juntahum1 • Nuntawoot Jongrungklang2 • Wanwipa Kaewpradit2 Saisamorn Lumyong3 • Sophon Boonlue1
•
Received: 20 April 2019 / Accepted: 18 November 2019 Ó Society for Sugar Research & Promotion 2019
Abstract A field experiment was conducted to investigate the impact of native inoculum and inoculation with the arbuscular mycorrhizal fungus (AMF, Funneliformis mosseae KKU-BRP-KK6-2) on growth and productivity of sugarcane variety Khon Kaen 3 in the presence or absence of P fertilizer. Treatments included (1) control with native inoculum, (2) inoculation with F. mosseae with native inoculum (AMF), (3) inoculation with F. mosseae with native inoculum and with half dosage of P fertilizer (AMF ? 50%F) and (4) full dosage of fertilizer (100%F) with native inoculum. Mycorrhizal colonization was significantly higher in both AMF treatments compared to the uninoculated treatments, suggesting inoculum limitation in sugarcane fields. Both of inoculation and P fertilization increased plant nutrient uptake (NPK), plant biomass and productivity as compared to the control. The highest plant biomass and productivity were observed in the AMF ? 50%F treatment. Moreover, initial AMF colonization after 4 months was significantly correlated with soil properties, biomass and productivity. We conclude that inoculation with F. mosseae is an important factor to promote sugarcane productivity. Inoculum addition could also result in substantial P fertilizer reduction with 50% dose.
& Sophon Boonlue [email protected] 1
Department of Microbiology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
2
Department of Plant Science and Agricultural Resources, Faculty of Agriculture, Khon Kaen University, Khon Kaen, Thailand
3
Department of Biology, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand
Keywords Arbuscular mycorrhizal fungi Sugarcane Productivity Fertilizer savings Rhizosphere
Introduction Sugarcane (Saccharum species hybrids) is an important crop to human beings, both in terms of food (raw material for sugar) and for renewable energy (ethanol industries) which mainly grown in tropical and subtropical regions (Tukaew et al. 2016). Thailand is the world’s second largest sugar exporter after Brazil (Sen Nag 2017). Therefore, the sugar industry in Thailand plays a vital role towards national economic development to generate higher income and employment opportunities. The land area planted with sugarcane has expanded considerably in the northeast of Thailand (Sriroth et al. 2016). Sugarcane has a very high water and P demand in order to produce high productivity, while it can maintain a high productivity at relatively low leaf N concentrations. Farmers generally apply mineral fertilizer (usually in the form of NPK) to increase yields (Soomro et al. 2014) as the result of increased production costs and can have negative effects on the soil environment. Most sugarcane is grown und
Data Loading...
