Study on rice and CO2-C emission under differnt temperature regime in mid-hill conditon / Ghanashyam Malla    

Public ISBD in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. I / Giri, Y.P.     Title : Study on rice and CO2-C emission under differnt temperature regime in mid-hill conditon Material Type: printed text Authors: Ghanashyam Malla ; Gautam, Anand Kumar, Author ; Amit Timilsina, Author Pagination: 247-249 p. Languages : English (eng) Keywords: CO2-C  emission  ;  open  top  chamber  (OTC)  planting  dates  rainfall  pattern Abstract: Elevated temperature and unusual rain is adversely affecting agricultural crops. Threats in the rice crop due to temperature rise are: change in crop phenology, physiology, grain yield and even crop success along with moisture and nutrient availability. An experiment was carried out in field and open top chamber (OTC) to study the response of rice variety (Khumal 4), C02-C emission under different temperature regime and different dates of transplanting (19th June, 29th June, 9th July) in 20 I 0 and 2012. Experiment showed that heading and maturity were 4-7 and I 0-12 days earlier in OTC .Average grain yield was higher by 9.2% in OTC. Higher average grain yield was recorded in 3'd date of planting under both conditions. Average daily temperature was 4-5°C higher in OTC. C02-C emission under OTC was nearly 24% higher compared to field, whereas organic carbon in OTC was lower compared to field. Thus, yield can be increased under elevated temperature and unusual rainfall with proper water management practices. Therefore, a strong monitoring system on climatic parameters and their impact on crop have to be regulated to increase rice crop production. Link for e-copy: http://elibrary.narc.gov.np/?r=904 in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. I / Giri, Y.P.     Study on rice and CO2-C emission under differnt temperature regime in mid-hill conditon [printed text] / Ghanashyam Malla ; Gautam, Anand Kumar, Author ; Amit Timilsina, Author . - [s.d.] . - 247-249 p. Languages : English (eng) Keywords: CO2-C  emission  ;  open  top  chamber  (OTC)  planting  dates  rainfall  pattern Abstract: Elevated temperature and unusual rain is adversely affecting agricultural crops. Threats in the rice crop due to temperature rise are: change in crop phenology, physiology, grain yield and even crop success along with moisture and nutrient availability. An experiment was carried out in field and open top chamber (OTC) to study the response of rice variety (Khumal 4), C02-C emission under different temperature regime and different dates of transplanting (19th June, 29th June, 9th July) in 20 I 0 and 2012. Experiment showed that heading and maturity were 4-7 and I 0-12 days earlier in OTC .Average grain yield was higher by 9.2% in OTC. Higher average grain yield was recorded in 3'd date of planting under both conditions. Average daily temperature was 4-5°C higher in OTC. C02-C emission under OTC was nearly 24% higher compared to field, whereas organic carbon in OTC was lower compared to field. Thus, yield can be increased under elevated temperature and unusual rainfall with proper water management practices. Therefore, a strong monitoring system on climatic parameters and their impact on crop have to be regulated to increase rice crop production. Link for e-copy: http://elibrary.narc.gov.np/?r=904

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Study on rice at different planting dates under changing rainfall pattern at Khumaltar / Ghanashyam Malla    

Public ISBD in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. I / Giri, Y.P.     Title : Study on rice at different planting dates under changing rainfall pattern at Khumaltar Material Type: printed text Authors: Ghanashyam Malla ; Gautam, Anand Kumar, Author ; Alok Sharma, Author ; Amit Timilsina, Author Pagination: 205-209 p. Languages : English (eng) Keywords: Climate  ;  Planting  dates  Rainfall  pattern  rice  and  variety Abstract: Rice is a major crop in the country, playing a vital role in national economy. Unusual rain is mainly affecting the rice than the other crops with main impact on transplanting time. To find out the solution of this problem, an experiment was carried out in split plot design with two varieties as main plot and three dates of transplanting as sub plot factor with three replications in 2010 and 2011 at Khumaltar. Variety Khumal 13 produced higher grain yield compared to Kimma! 4 in both years. Significantly higher grain yield (6.6 t/ha) was found under tlurd date of transplanting in 20 I 0 compared to frrst date of transplanti11g and statistically comparable grain yield to second date. First date of transplanting resulted significantly higher grain yield (7 .3 t/ha) compared with other dates in 2011. Onset and intensity of rainfall was erratic with late rainfall in 20 I 0 and 87% more rainfall in 2011. Thus, development of wide adaptable varieties and well advanced climate forecasting system is required to minimize the threats of rainfall uncertainty for the food security and livelihood of country. Link for e-copy: http://elibrary.narc.gov.np/?r=897 in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. I / Giri, Y.P.     Study on rice at different planting dates under changing rainfall pattern at Khumaltar [printed text] / Ghanashyam Malla ; Gautam, Anand Kumar, Author ; Alok Sharma, Author ; Amit Timilsina, Author . - [s.d.] . - 205-209 p. Languages : English (eng) Keywords: Climate  ;  Planting  dates  Rainfall  pattern  rice  and  variety Abstract: Rice is a major crop in the country, playing a vital role in national economy. Unusual rain is mainly affecting the rice than the other crops with main impact on transplanting time. To find out the solution of this problem, an experiment was carried out in split plot design with two varieties as main plot and three dates of transplanting as sub plot factor with three replications in 2010 and 2011 at Khumaltar. Variety Khumal 13 produced higher grain yield compared to Kimma! 4 in both years. Significantly higher grain yield (6.6 t/ha) was found under tlurd date of transplanting in 20 I 0 compared to frrst date of transplanti11g and statistically comparable grain yield to second date. First date of transplanting resulted significantly higher grain yield (7 .3 t/ha) compared with other dates in 2011. Onset and intensity of rainfall was erratic with late rainfall in 20 I 0 and 87% more rainfall in 2011. Thus, development of wide adaptable varieties and well advanced climate forecasting system is required to minimize the threats of rainfall uncertainty for the food security and livelihood of country. Link for e-copy: http://elibrary.narc.gov.np/?r=897

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http://nkcs.org.np/narc/dl/?r=897 URL