Effects of water and nitrogen on root/shoot ratio and water use efficiency of winter wheat

2013 ◽  
Vol 21 (3) ◽  
pp. 282
Author(s):  
YanZhe WANG ◽  
XiuWei LIU ◽  
HongYong SUN ◽  
XiYing ZHANG ◽  
LianRui ZHANG
2010 ◽  
Vol 115 (2) ◽  
pp. 158-164 ◽  
Author(s):  
Shou-Chen Ma ◽  
Feng-Min Li ◽  
Bing-Cheng Xu ◽  
Zhan-Bin Huang

2020 ◽  
Vol 57 (1) ◽  
pp. 79-83
Author(s):  
RA Aparna ◽  
V Jayakrishnakumar

The field experiment was conducted in the farmer's field, Peringammala, Kalliyoor, Thiruvananthapuram during the Virippu 2017 to study the effect of irrigation scheduling and live mulching with cowpea on root and soil moisture characteristics of upland rice. The results revealed that root characters like root volume, root dry weight and root shoot ratio significantly increased under the irrigation treatment I1 [irrigation at 3 cm depth at 10 mm cumulative pan evaporation (CPE)]. The root length was the highest for rain fed control (I7). Among the mulches, live mulching with cowpea (M2) recorded the highest root length and root shoot ratio. The treatments and their interaction had a significant influence on soil moisture. Irrigation at 3 cm depth at 10 mm CPE, live mulching with cowpea and their interaction recorded the highest consumptive use. The highest water use efficiency was recorded by the treatment irrigation at 2 cm depth at 20 mm CPE (I5) and live mulching with cowpea (M2).


Plant Disease ◽  
2010 ◽  
Vol 94 (6) ◽  
pp. 766-770 ◽  
Author(s):  
J. A. Price ◽  
F. Workneh ◽  
S. R. Evett ◽  
D. C. Jones ◽  
J. Arthur ◽  
...  

Greenhouse and field studies were conducted to determine the effects of Wheat streak mosaic virus (WSMV), a member of the family Potyviridae, on root development and water-use efficiency (WUE) of two hard red winter wheat (Triticum aestivum) cultivars, one susceptible and one resistant to WSMV. In the greenhouse studies, wheat cultivars were grown under three water regimes of 30, 60, and 80% soil saturation capacity. After inoculation with WSMV, plants were grown for approximately 4 weeks and then harvested. Root and shoot weights were measured to determine the effect of the disease on biomass. In all water treatments, root biomass and WUE of inoculated susceptible plants were significantly less (P < 0.05) than those of the noninoculated control plants. However, in the resistant cultivar, significance was only found in the 30 and 60% treatments for root weight and WUE, respectively. Field studies were also conducted under three water regimes based on reference evapotranspiration rates. Significant reductions in forage, grain yield, and crop WUE were observed in the inoculated susceptible plots compared with the noninoculated plots. Both studies demonstrated that wheat streak mosaic reduces WUE, which is a major concern in the Texas Panhandle because of limited availability of water.


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