Effects of steel slag applications on CH4, N2O and the yields of Indonesian rice fields: a case study during two consecutive rice-growing seasons at two sites

2015 ◽  
Vol 61 (4) ◽  
pp. 704-718 ◽  
Author(s):  
Helena Lina Susilawati ◽  
Prihasto Setyanto ◽  
Abdul Karim Makarim ◽  
Miranti Ariani ◽  
Kimio Ito ◽  
...  
Keyword(s):  
Steel Slag ◽  
Rice Fields ◽  
Growing Seasons

scholarly journals Impact of Climate Change on Production and Productivity: A Case Study of Maize Research and Development In Nepal

2010 ◽  
Vol 11 ◽  
pp. 59-69 ◽  
Author(s):  
Janak Lal Nayava ◽  
Dil Bahadur Gurung
Keyword(s):  
Climate Change ◽  
Maize Yield ◽  
Maximum Temperature ◽  
Rainfall Distribution ◽  
Maize Production ◽  
Growing Seasons ◽  
Agriculture And Environment ◽  
Present Rate ◽  
Annual Maximum Temperature

The relation between climate and maize production in Nepal was studied for the period 1970/71-2007/08. Due to the topographical differences within north-south span of the country, Nepal has wide variety of climatic condition. About 70 to 90% of the rainfall occurs during summer monsoon (June to September) and the rest of the months are almost dry. Maize is cultivated from March to May depending on the rainfall distribution. Due to the availability of improved seeds, the maize yield has been steadily increasing after 1987/1988. The national area and yield of maize is estimated to be 870,166ha and 2159kg/ha respectively in 2007/08. The present rate of annual increase of temperature is 0.04°C in Nepal. Trends of temperature rise are not uniform throughout Nepal. An increase of annual temperature at Rampur during 1968-2008 was only 0.039°C. However, at Rampur during the maize growing seasons, March/April - May, the trend of annual maximum temperature had not been changed, but during the month of June and July, the trend of increase of maximum temperature was 0.03°C to 0.04°C /year.Key words: Climate-change; Global-warming; Hill; Mountain; Nepal; TaraiThe Journal of AGRICULTURE AND ENVIRONMENT Vol. 11, 2010Page: 59-69Uploaded Date: 15 September, 2010

scholarly journals Acque e colture irrigue in Terra di Lavoro tra XVII e XVIII secolo. Una riflessione sul paesaggio dell’acqua tra economia e tutela

2021 ◽  
pp. 3-17
Author(s):  
Pierluigi De Felice ◽  
Luisa Spagnoli
Keyword(s):  
Water Resources ◽  
Rice Fields ◽  
Problematic Relationship ◽  
Eighteenth And Nineteenth Centuries ◽  
Great Damage

In the archive of the Abbey of Montecassino there is a judicial affair between the monks of the Abbey and the Duke of Mignano stored. The quaestio of the dispute is for the sowing of rice by the Duke who, despite several orders of prohibitions (1661, 1665), persists in cultivating it, causing, according to the Benedictine monks, “great damage to the universities of St. Vittore, St. Pietro Infine, Mignano” because “it affects the wholesomeness of these lands”.  An unpublished large-scaled cartography is attached to this judicial dispute, whose graphic signs clarify and define the places of the diatribe also providing further information: we are in the Terra di Lavoro bathed by the river Peccia which is used and partly diverted to irrigate the Duke’s rice.  The case study offers a lot of food for thought starting from the problematic relationship between the values of the environment and water resources, defended by the Benedictine monks, and the economic and productive needs of a local aristocracy with an entrepreneurial vocation. This contrast connects, recalling and confirming it, to the wider one that developed during the eighteenth and nineteenth centuries linked to the spread of rice where doctors, agronomists, politicians have widely debated the problems raised by the spread of rice fields in the Peninsula.

The Sugarcane Borer (Lepidoptera: Crambidae) Infests Rice at Low Population Levels in Florida

2019 ◽  
Author(s):  
Erik L Roldán ◽  
Julien M Beuzelin ◽  
Matthew T Vanweelden ◽  
Ronald H Cherry
Keyword(s):  
Oryza Sativa L ◽  
Stem Borer ◽  
Pheromone Trap ◽  
Rice Fields ◽  
Stem Borers ◽  
Production Region ◽  
Early Maturation ◽  
Sugarcane Borer ◽  
Growing Seasons ◽  
Southern Florida

Abstract The sugarcane borer, Diatraea saccharalis (F.), rice stalk borer, Chilo plejadellus Zincken, and Mexican rice borer, Eoreuma loftini (Dyar), are stem borers (Lepidoptera: Crambidae) that infest rice (Oryza sativa L.) in the southern United States. A 2-yr study was conducted to determine stem borer injury, infestation, and parasitism levels in Florida. Thirty commercial rice fields were selected during the 2017 and 2018 growing seasons throughout the rice production region in southern Florida. Sampling for stem borer injury and infestations was conducted in each field between the milk and early maturation stages by observing plants at 10 locations, with three 1-m2 quadrats per location. In addition, monitoring for E. loftini adults was conducted using one pheromone trap adjacent to each field. In 2017, the number of rice tillers exhibiting stem borer injury averaged 0.024 tillers/m2 and infestation levels averaged 0.008 stem borers/m2, with only D. saccharalis being observed. In 2018, injury and infestation levels averaged 0.062 injured tillers/m2 and 0.023 D. saccharalis larvae or pupae/m2, respectively. The solitary parasitoid Alabagrus stigma Brullé (Hymenoptera: Braconidae) parasitized 33 and 40% of the collected D. saccharalis in 2017 and 2018, respectively. In addition, pheromone traps did not capture E. loftini adults. This study shows that D. saccharalis infests rice in Florida but at relatively low levels not threatening production and that rice fields are habitats for D. saccharalis parasitoids. This study also suggests that C. plejadellus and E. loftini do not occur in southern Florida.

scholarly journals Additional Burden of Diseases Associated with Cadmium Exposure: A Case Study of Cadmium Contaminated Rice Fields in Mae Sot District, Tak Province, Thailand

2015 ◽  
Vol 12 (8) ◽  
pp. 9199-9217 ◽  
Author(s):  
Nisarat Songprasert ◽  
Thitiporn Sukaew ◽  
Khanitta Kusreesakul ◽  
Witaya Swaddiwudhipong ◽  
Chantana Padungtod ◽  
...  
Keyword(s):  
Rice Fields ◽  
Cadmium Exposure ◽  
Additional Burden ◽  
Tak Province ◽  
Burden Of Diseases

scholarly journals Ritual Pethik Pari sebagai Pembentukan Ulang Individualitas Petani : Studi tentang Budaya Pethik Pari di Desa Dukuh Dempok, Wuluhan, Kabupaten Jember

2021 ◽  
Vol 21 (1) ◽  
pp. 22
Author(s):  
Fitrotin Nisa ◽  
Sofia Nabilla Bayani ◽  
Adellisa Wardani ◽  
Dinda Clarita Salsadillah
Keyword(s):  
Qualitative Method ◽  
Rice Fields ◽  
Case Study Approach ◽  
Study Approach ◽  
Farming Community ◽  
Peasant Community ◽  
Depth Interviews ◽  
Descriptive Qualitative

The Pethik Pari tradition is a tradition of the Javanese farming community. This tradition is in the form of a series of selamatan ritual performed as a form of gratitude of the farmers to God Almighty for abundant sustenance through good harvests. The Pethik Pari ritual used to be carried out by Dukuh Dempok Village farmers individually in their homes by simply carrying out a simple slametan. But now, the ritual procession is changing and carried out jointly by farmers in the fields by carrying out slametan, Wayang’s performances, and fishing together in the rice fields. With the change in the implementation of the ritual procession, making the Pethik Pari ritual a re-establishment of the individuality of peasants in Dukuh Dempok Village. The ritual tradition of Pethik Pari itself, is also a symbol of the Javanese peasant community that there is a belief in the existence of Dewi Sri as a goddess of prosperity. This research uses descriptive qualitative method with a case study approach. Data was collected through in-depth interviews with informants from the head of the farmers' groups and Dukuh Dempok Village farmers. The focus of this study was to determine the re-establishment of the individuality of farmers in Dukuh Dempok village, Wuluhan, Jember, East Java.  

Application of large- and medium-scale aerial photographs to forest vegetation management: A case study

2000 ◽  
Vol 76 (6) ◽  
pp. 903-913 ◽  
Author(s):  
Douglas G. Pitt ◽  
Ulf Runesson ◽  
F. Wayne Bell
Keyword(s):  
Life Forms ◽  
Vegetation Management ◽  
Aerial Photographs ◽  
Herbaceous Species ◽  
Growing Seasons ◽  
Forest Classification ◽  
Vegetation Complexes ◽  
Product Verification ◽  
Selection Of

Five experimental conifer release treatments applied to each of four, three- to seven- year-old spruce plantations resulted in a mosaic of woody and herbaceous vegetation complexes after two growing seasons. A combination of 1:5000-scale overview and 1:500-scale sample photographs were evaluated as a means of mapping and quantifying cover in each of eight vegetation and two non-vegetation categories. On 23-cm format, 1:5000-scale photographs, blocks were stereoscopically stratified into areas (> 25 m2) of uniform vegetation. A random selection of eighty 70-mm format, 1:500 photo samples were then used as "training sites" to calibrate strata assessment on the 1:5000 photographs. Remaining sample plots were used to verify the accuracy of the final map product. Verification plots suggested that principle vegetation components such as tall, mid, and low shrub, grass, and herbaceous species were estimated to within 5–10% cover, at least 70% of the time. Errors for lesser components, such as dead shrub, conifer, bare ground and slash were 2–5% cover. Ferns could not be discerned at the 1:5000 scale and there was evidence of occasional confusion between herbaceous species and other life forms, including mid shrub, low shrub, and grass categories. Operational applications of the methodology are discussed. Key words: remote sensing, digitized aerial photographs, vegetation management, forest classification

scholarly journals Malezas asociadas a canales de riego y terrenos colindantes de arroz anegado en Finca El Cerrito, Guanacaste, Costa Rica.

2016 ◽  
Vol 7 (1) ◽  
pp. 9 ◽  
Author(s):  
Manuel Rojas ◽  
Renán Agüero
Keyword(s):  
Costa Rica ◽  
Plant Species ◽  
Weather Conditions ◽  
Oryza Rufipogon ◽  
Rice Fields ◽  
Percent Cover ◽  
Irrigation Canals ◽  
Crop Fields ◽  
Growing Seasons ◽  
Participation Index

A weed survey was conducted on irrigation canals and neighboring inundated rice fields, at Finca El Cerrito, Liberia, Guanacaste, Costa Rica. Sampling was performed on two growing seasons contrasting in weather conditions (rainy and dry) during 1992. Each surveying point was subdivided in five habitats (levee, internal slope, external slope, bottom of canal, and neighboring rice field). Plant species, percent cover and phenological stage were recorded at each habitat. In addition, for each species the next parameters were estimated: Frecuency-Cover Index (IFC), and Relative Participation Index (IPR). IPR at the family level was also calculated. 131 species during the dry season, and 144 species during the rainy season were recorded, showing that there is a significant plant diversity associated to these irrigation canals. The levee showed the greatest amount of plant species, while crop fields the least. Poaceae was the most important family, followed by Cyperaceae, based on IPR. Echinochloa colonum showed high IFC values and appeared in all habitats; this species together with others such as Oryza rufipogon, O. latifolia, Cyperus iria, and several broadleaf weeds are carefully controlled in rice fields, but reproduce heavily on irrigation canals, and shed their seeds in irrigation water, thus reinfesting commercial fields.

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