scholarly journals Seedling Emergence and Establishment of Direct-sown Paddy Rice in Soils Incorporated with Substances Produced in Reductive Paddy Soil.

1993 ◽  
Vol 62 (4) ◽  
pp. 609-613 ◽  
Author(s):  
Motoyuki HAGIWARA ◽  
Mitsuo IMURA
Keyword(s):  
Paddy Soil ◽  
Seedling Emergence ◽  
Paddy Rice

Importance of contact between rice roots and co-situs applied fertilizer granules on iron absorption by paddy rice in a calcareous paddy soil

2008 ◽  
Vol 54 (3) ◽  
pp. 467-472 ◽  
Author(s):  
Claudio Kendi Morikawa ◽  
Masahiko Saigusa ◽  
Naoko Kishi Nishizawa ◽  
Satoshi Mori
Keyword(s):  
Paddy Soil ◽  
Iron Absorption ◽  
Paddy Rice ◽  
Rice Roots

Two new selenite reducing bacterial isolates from paddy soil and the potential Se biofortification of paddy rice

Ecotoxicology ◽  
2020 ◽  
Author(s):  
Chunlei Huang ◽  
Helin Wang ◽  
Xinyan Shi ◽  
Yanhong Wang ◽  
Ping Li ◽  
...  
Keyword(s):  
Paddy Soil ◽  
Paddy Rice ◽  
Bacterial Isolates

Genetic variation for rate of establishment in caucasian clover

1998 ◽  
pp. 213-217
Author(s):  
K.H. Widdup ◽  
T.L. Knight ◽  
C.J. Waters
Keyword(s):  
Genetic Variation ◽  
Root Growth ◽  
Seedling Growth ◽  
White Clover ◽  
Seedling Emergence ◽  
Red Clover ◽  
Dry Weight ◽  
Cool Season ◽  
Trifolium Ambiguum ◽  
Root Dry Weight

Slow establishment of caucasian clover (Trifolium ambiguum L.) is hindering the use of this legume in pasture mixtures. Improved genetic material is one strategy of correcting the problem. Newly harvested seed of hexaploid caucasian clover germplasm covering a range of origins, together with white and red clover and lucerne, were sown in 1 m rows in a Wakanui soil at Lincoln in November 1995. After 21 days, the caucasian clover material as a group had similar numbers of emerged seedlings as white clover and lucerne, but was inferior to red clover. There was wide variation among caucasian clover lines (48-70% seedling emergence), with the cool-season selection from cv. Monaro ranked the highest. Recurrent selection at low temperatures could be used to select material with improved rates of seedling emergence. Red clover and lucerne seedlings produced significantly greater shoot and root dry weight than caucasian and white clover seedlings. Initially, caucasian clover seedlings partitioned 1:1 shoot to root dry weight compared with 3:1 for white clover. After 2 months, caucasian clover seedlings had similar shoot growth but 3 times the root growth of white clover. Between 2 and 5 months, caucasian clover partitioned more to root and rhizome growth, resulting in a 0.3:1 shoot:root ratio compared with 2:1 for white clover. Both clover species had similar total dry weight after 5 months. Unhindered root/ rhizome devel-opment is very important to hasten the establishment phase of caucasian clover. The caucasian clover lines KZ3 and cool-season, both selections from Monaro, developed seedlings with greater shoot and root growth than cv. Monaro. KZ3 continued to produce greater root growth after 5 months, indicating the genetic potential for improvement in seedling growth rate. Different pasture estab-lishment techniques are proposed that take account of the seedling growth characteristics of caucasian clover. Keywords: establishment, genetic variation, growth, seedling emergence, Trifolium ambiguum

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