scholarly journals Floral Impotency Due to Cool Weather in Paddy Rice Plants in the Early-Season Culture Area. II. Countermeasure to the damage by fertilizer application.

1991 ◽  
Vol 60 (3) ◽  
pp. 355-364
Author(s):  
Tomio WATANABE ◽  
Yoshio TAKEICHI
Keyword(s):  
Fertilizer Application ◽  
Paddy Rice ◽  
Early Season ◽  
Rice Plants ◽  
Culture Area

scholarly journals Floral Impotency Due to Cool Weather in Paddy Rice plants in the Early-Season Culture Area.

1991 ◽  
Vol 60 (2) ◽  
pp. 225-233 ◽  
Author(s):  
Tomio WATANABE ◽  
Yoshio TAKEICHI
Keyword(s):  
Paddy Rice ◽  
Early Season ◽  
Rice Plants ◽  
Culture Area

Carbon footprint of crop production in China: an analysis of National Statistics data

2014 ◽  
Vol 153 (3) ◽  
pp. 422-431 ◽  
Author(s):  
K. CHENG ◽  
M. YAN ◽  
D. NAYAK ◽  
G. X. PAN ◽  
P. SMITH ◽  
...  
Keyword(s):  
Carbon Footprint ◽  
Crop Production ◽  
Management Practices ◽  
Fertilizer Application ◽  
N Fertilization ◽  
Paddy Rice ◽  
N Fertilizer ◽  
Carbon Equivalent ◽  
Ghg Mitigation ◽  
Application Rates

SUMMARYAssessing carbon footprint (CF) of crop production in a whole crop life-cycle could provide insights into the contribution of crop production to climate change and help to identify possible greenhouse gas (GHG) mitigation options. In the current study, data for the major crops of China were collected from the national statistical archive on cultivation area, yield, application rates of fertilizer, pesticide, diesel, plastic film, irrigated water, etc. The CF of direct and indirect carbon emissions associated with or caused by these agricultural inputs was quantified with published emission factors. In general, paddy rice, wheat, maize and soybean of China had mean CFs of 2472, 794, 781 and 222 kg carbon equivalent (CE)/ha, and 0·37, 0·14, 0·12 and 0·10 kg CE/kg product, respectively. For dry crops (i.e. those grown without flooding the fields: wheat, maize and soybean), 0·78 of the total CFs was contributed by nitrogen (N) fertilizer use, including both direct soil nitrous oxide (N2O) emission and indirect emissions from N fertilizer manufacture. Meanwhile, direct methane (CH4) emissions contributed 0·69 on average to the total CFs of flooded paddy rice. Moreover, the difference in N fertilizer application rates explained 0·86–0·93 of the provincial variations of dry crop CFs while that in CH4 emissions could explain 0·85 of the provincial variation of paddy rice CFs. When a 30% reduction in N fertilization was considered, a potential reduction in GHGs of 60 megatonne (Mt) carbon dioxide equivalent from production of these crops was projected. The current work highlights opportunities to gain GHG emission reduction in production of crops associated with good management practices in China.

scholarly journals Some Considerations upon the Reason of Increase of Panicles in Number, in Early Season Cultivation of Paddy Rice.

1959 ◽  
Vol 27 (2) ◽  
pp. 182-184 ◽  
Author(s):  
Keichi SAMOTO ◽  
Katsuo SUGIMOTO ◽  
Masayoshi UDA ◽  
Kaichiro SUZUKI
Keyword(s):  
Paddy Rice ◽  
Early Season
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