2 edition of Solar radiation and rice productivity found in the catalog.
Solar radiation and rice productivity
|Statement||B. Venkateswarlu and R.M. Visperas.|
|Series||IRRI research papers series -- No.129|
|Contributions||Visperas, R. M.|
Dr. Alexander's main area of interest is the study of the dynamic solar corona via the analysis and theoretical interpretation of thermal and non-thermal radiation. His primary contributions have been in the area of solar flare and CME physics where he has developed theoretical models for the production of gamma-rays, hard X-rays, and soft X. the phenomenon whereby the Earth's atmosphere traps solar radiation, caused by the presence in the atmosphere of gases such as carbon dioxide, water vapor, and methane that allow incoming sunlight to pass through, but absorb heat radiated back from the Earth's surface.
Instead, a constant daily amount of sunlight (11–12 hrs per day) provides more solar radiation, thereby, a longer period of time for plant growth. The annual rainfall in tropical wet forests ranges from cm to cm (50– in) with some monthly variation. Rate of crop dry matter accumulation is the product of total incident solar radiation (Q, MJ m-2 d-1), the absorptance of incident solar radiation by the crop canopy (I A ', %), and the efficiency of conversion of absorbed solar radiation into plant dry matter (Є, g dry matter MJ-1).File Size: KB.
Part of the Tasks for vegetation sciences 3 book series (TAVS, volume 3) Abstract Since the stand architecture is closely related to its radiation regime, a question arises as to what role the stand architecture plays in photosynthesis and productivity and to what extent the stand photosynthesis and productivity can be improved by purposely Cited by: 4. Monteith JL () Solar radiation and productivity in tropical ecosystems. J Appl Ecol – Google Scholar Monteith JL () Climate and efficiency of crop production in by:
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Solar radiation and rice productivity. Manila, Philippines: International Rice Research Institute, (OCoLC) Material Type: Government publication, International government publication: Document Type: Book: All Authors / Contributors: B Venkateswarlu; R M Visperas.
Radiation use efficiency (RUE) can be traced back to Wilson (b) as the relationship between the accumulation of biomass relative to the light intercepted by the crop.
Loomis and Amthor () stated that RUE would be a useful parameter to relate canopy photosynthesis to crop yield. The RUE is an important quantifier of crop production in relation to photosynthesis, as it.
On the surface of the sun, the intensity of solar radiation is estimated as 73 MW per squared meter surface. But, on the surface of the earth, it is reduced to maximum of W per squared meter at air-mass of and 25 degree Celsius.
History of solar energy. The history of solar energy is fascinating and awe inspiring. Solar Energy Conversion II presents the proceedings of the International Symposium on Solar Energy Utilization, held in Ontario, Canada on AugustThis book provides information on the utilization of solar energy and on the.
Solar radiation and the growth and productivity of upland rice (Oryza sativa) in West Africa. Cornell University, Ithaca, New York. (Ph.D. thesis) Rakotonjanahary, X.R. Rice research in Madagascar. Paper presented at the IRTP workshop, March ICIPE Conference Centre, Duduville, Kenya.
The high solar radiation, long summer days and low night temperature in countries under temperate and Mediterranean climates are favourable for high yields of rice.
The highest rice yield recorded under tropical conditions was tonnes/ha obtained from IR 8 planted at the experimental farm of IRRI, Philippines in the dry season (De. Genetic improvement of photosynthetic performance of cereal crops and increasing the efficiency with which solar radiation is converted into biomass has recently become a major focus for crop physiologists and breeders.
The pulse amplitude modulated chlorophyll fluorescence technique ([PAM]) allows quantitative leaf level monitoring of the utilization of Cited by: 9.
Rice is the seed of the grass species Oryza glaberrima (African rice) or Oryza sativa (Asian rice). As a cereal grain, it is the most widely consumed staple food for a large part of the world's human population, especially in Asia and is the agricultural commodity with the third-highest worldwide production (rice, million tonnes in ), after sugarcane ( billion tonnes Energy: kcal ( kJ).
Ever since the Green Revolution first staved off famines in the s, Indian rice and wheat systems have grown over the past half century to play critical roles in the world food economy: India’s billion people depend primarily on food produced within the country, and other Asian and African nations rely heavily on imports of Indian by: Plant density and crop productivity 1 Plant distribution 7 Environmental factors affecting growth and yield 8 Strategies for maximizing solar energy utilization, leaf area, interception of solar radiation and crop growth 11 Photosynthesis 29 Factors essential for photosynthesis 37 Physiological limitations to crop growth 41File Size: 5MB.
Rice and its environment The different environmental factors that influence rice production are analyzed, including: temperature (high, critical low, water, and air); solar radiation; solar energy and photosynthesis; water; precipitation; transpiration; water/soil ratio; wind; and relative : José Patricio Vargas.
They trap solar radiation, which is converted into thermal radiation on the Earth’s surface of which some is reradiated back into the atmosphere. The Medieval Climate Anomaly occurred between and AD.
Solar radiation (without which life will not exist) • From germination to harvest and even post harvest crops are affected by solar radiation.
• Biomass production by photosynthetic processes requires light. • All physical process taking place in the soil, plant and environment are File Size: 44KB.
As Keith himself summarizes, “Solar geoengineering is an extraordinarily powerful tool. But it is also dangerous.” Studies have shown that solar radiation management could be accomplished and that it would cool the planet. Last fall, Keith published a book, A Case for Climate Engineering, that lays out the practicalities of such a scheme.
III. Climate Change Impact Modeling. For this study, we have chosen to use climate change predictions produced for the 4 th Assessment Report of the United Nation’s Intergovernmental Panel on Climate Change (IPCC 9), released in (Rex Victor Cruz et al.
).We use an “ensemble-mean” 10 output of multiple, internationally reputable coupled Atmospheric Cited by: I have completed PhD from UPLB, Philippines. Major subject was soil science and minor on microbiology.
I have served BRRI for about 33 years in different categories. Acted as PI &. Despite deforestation, the Amazon basin rainforest is the largest tropical forest in the world. In Brazil, the largest Amazon country, approximately million square kilometers, or million hectares remain.
million hectares are designated indigenous reserves and 25 million hectares as sustainable development reserve and extractive reserves for rubber; all of this forest area is. on Rice Production in Mainland China. Lili Xia and Alan Robock. reduction of solar radiation, and reduction of precipitation, which are all important factors Chinese Agriculture Year Book(Ministry of Agriculture of the People ’s Republic of China ), which provides yields, productions and planting areas of rice from to This paper presents the solar radiation climate in Korea, analyzed by the global radiation data on the horizontal surface collected for 24 years () and normal incidence beam radiation.
solar radiation, air temperature, humidity, and pre-cipitation. The day-to-day variability of these across the landscape can be described as weather. Weather extremes at critical periods of a crop’s development can have dra-matic influences on productivity and yields.
The long-term average temperature and humidity and the total solar ra-File Size: KB. submitted papers for the book Advances in temperate rice research, which I believe will be an important document for temperate rice improvement.
Several constraints limit rice production and productivity in temperate rice-growing countries and high-altitude regions in the tropics. Several million hectares of greater solar radiation than in the.
Possibly the most graphic treatment of global warming that has yet been published, Six Degrees is what readers of Al Gore's best-selling An Inconvenient Truth or Ross Gelbspan's Boiling Point will turn to next.
Written by the acclaimed author of High Tide, this highly relevant and compelling book uses accessible journalistic prose to distill what environmental 4/5().A greenhouse gas (sometimes abbreviated GHG) is a gas that absorbs and emits radiant energy within the thermal infrared range.
Greenhouse gases cause the greenhouse effect on planets. The primary greenhouse gases in Earth's atmosphere are water vapor (H 2 O), carbon dioxide (CO 2), methane (CH 4), nitrous oxide (N 2 O), and ozone (O 3).Without greenhouse gases, the .