Assessment of native nutrient supplying capacity of soil for site specific nutrient management to increase early rice (Oryza sativa L.) productivity in Morang, Nepal

Crop Research ◽  
2019 ◽  
Vol 54 (1&2) ◽  
Keyword(s):  
Oryza Sativa ◽  
Nutrient Management ◽  
Oryza Sativa L ◽  
Site Specific ◽  
Early Rice

scholarly journals Farmers’ Participatory Site Specific Nutrient Management in Gangetic Tidal Floodplain Soil for High Yielding Boro Rice (Oryza Sativa L.)

2013 ◽  
Vol 11 (1) ◽  
pp. 8-14 ◽  
Author(s):  
DK Nath ◽  
F Haque ◽  
F Amin ◽  
M Sh Islam ◽  
MA Saleque
Keyword(s):  
Oryza Sativa ◽  
Nutrient Management ◽  
Oryza Sativa L ◽  
Block Design ◽  
Yield Response ◽  
Management Approach ◽  
Nitrogen And Phosphorus ◽  
Floodplain Soil ◽  
Site Specific ◽  
A Site

Site Specific Nutrient Management (SSNM) trials were conducted for irrigated, transplanted and high yielding rice (Oryza sativa L.) during Boro season 2012. Four treatments (NPK, PK, NK, and NP) were applied in a randomized complete block design to assess the effects of indigenous nutrient elements on rice yield and yield components. The trials were conducted so as to develop a site specific nutrient management approach for the farmers of Gangtic Tidal Floodplain ecosystem. The highest grain-yield of 5.64 t ha-1 was observed in NPK treatment, which gave 9.0, 34.4 and 50.7% higher yields than those of NP, NK and PK, respectively. The response to indigenous K was remarkable and it gave the second highest yield (5.13 t ha-1). The yield response to indigenous N was very poor and the lowest yield was found in N omission treatment (2.78 t ha-1). The response to indigenous P was also poor (3.7 t ha-1). This result shows that nitrogen and phosphorus are the most vibrant factors to increase yield since omission of N and P had significant impact on yield during Boro season. Use of N, P and K at 128.7, 8.08 and 12.78 kg, respectively could be recommended for growing BRRI dhan47 in Boro season. It could save P and K nutrient by 55.11 and 75.89 % compared to that of NPK treatment, respectively. DOI: http://dx.doi.org/10.3329/agric.v11i1.15236 The Agriculturists 2013; 11(1) 8-14

Salinity Results in Polyamine Accumulation in Early Rice (Oryza sativa L.). Seedlings

1988 ◽  
Vol 15 (6) ◽  
pp. 777 ◽  
Author(s):  
R Basu ◽  
N Maitra ◽  
B Ghosh
Keyword(s):  
Oryza Sativa ◽  
Amino Acid ◽  
Potent Inhibitor ◽  
Oryza Sativa L ◽  
Arginine Decarboxylase ◽  
Nacl Stress ◽  
Leucine Incorporation ◽  
Polyamine Content ◽  
Early Rice

Saline (NaCl) stress in germinated seedlings of rice cv. Rupsail causes an increase in polyamine content and concomitantly an enhancement of arginine decarboxylase (ADC) activity; in the case of putrescine, the increase is 100%. The responsiveness of coleoptiles and roots is different; ADC activity is maximum in roots and coleoptiles at 50 mM and 100 mM respectively. Difluoromethyl arginine, a potent inhibitor of ADC, reduces both polyamine accumulation and ADC activity. NaCl can enhance the activity of ADC by 1.6-fold in vitro. [14C]leucine incorporation into protein at 400 mM NaCl is decreased 4- and 10-fold in coleoptiles and roots, respectively. Efflux of sugar, amino acid, polyamines and total electrolytes increased gradually with the increase in concentration of salt. Influx of Na+ and Cl- and efflux of K+ in coleoptiles and roots are directly proportional to the concentration of NaCl applied.

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