scholarly journals Irrigation Scheduling of Rice (Oryza sativa L.) Using CROPWAT Model in the Western Region of Bangladesh

2017 ◽  
Vol 15 (1) ◽  
pp. 19-27 ◽  
Author(s):  
MB Hossain ◽  
S Yesmin ◽  
M Maniruzzaman ◽  
JC Biswas
Keyword(s):  
Irrigation Scheduling ◽  
Water Requirement ◽  
Annual Rainfall ◽  
Western Region ◽  
Cropping Pattern ◽  
Climate Data ◽  
Wet Season ◽  
Irrigated Rice ◽  
The Western Region ◽  
Selection Of

Understanding of crop water requirement is essential for irrigation scheduling and selection of cropping pattern in any particular area. A study was conducted to estimate irrigation requirement and made irrigation scheduling of T. Aman (wet season) and Boro (dry season irrigated) rice in the western region of Bangladesh using CROPWAT model. Historical climate data from three weather stations in the region along with soil and crop data were used as input to FAO Penman-Monteith method to estimate reference evapotranspiration (ETo). Effective rainfall was calculated using USDA soil conservation method. The model estimated1408 mm annual ETo in the study area, of which the highest amounts of 175 mm was in April and the lowest (70 mm) in December. The average annual rainfall was 1592 mm of which 986 mm was effective for plant growth and development. The model estimated ETc of BRRI dhan49, which was 473 to 458 mm, depending on its transplanting dates from 15 July to 15 August. Rice transplanted on 15 July required no irrigation, whereas three supplemental irrigations amounting 279 mm were required for transplanting on 15 August. The CROPWAT model estimated seasonal irrigation water requirement of 1212 mm (12 spilt applications) for BRRIdhan28 transplanted on 15 January. This model has also a potentiality to make irrigation scheduling of other crops. The Agriculturists 2017; 15(1) 19-27

scholarly journals Selection of Standard Rice Cultivars for Evaluating Tolerance to Rice Kernel Cracking in the Western Region of Japan

2020 ◽  
Vol 89 (2) ◽  
pp. 143-150
Author(s):  
Koji Nakagomi ◽  
Hideki Sasahara ◽  
Akiko Shigemune ◽  
Osamu Ideta ◽  
Asako Kobayashi ◽  
...  
Keyword(s):  
Western Region ◽  
Rice Cultivars ◽  
The Western Region ◽  
Selection Of

scholarly journals Manajemen Irigasi Pembibitan Sawit (Elaeis guineensis) Presisi dengan Cropwat 8.0

2019 ◽  
Vol 8 (2) ◽  
pp. 97
Author(s):  
Lisma Safitri
Keyword(s):  
Soil Properties ◽  
Water Use ◽  
Palm Oil ◽  
Irrigation Scheduling ◽  
Water Requirement ◽  
Crop Water Requirement ◽  
Climate Data ◽  
Crop Water ◽  
Water Requirements ◽  
Crop Water Requirements

The accurate water use information at each stage of plant growth is important to better understand the efficient and precise crop water requirement for optimal plant productivity. Nurseries of palm oil are a phase where young palm oil requires extra maintenance, particularly in meeting the plant water needs. The palm oil in the nursery phase require the regular irrigation schedule due to the vulnerable root systems. The purpose of this study was to calculate the oil palm water requirement with Cropwat 8.0 toward the precise irrigation management and provide a scenario for irrigation scheduling in palm oil nursery. The study was conducted in palm oil main nurseries at KP2 Instiper Yogyakarta with site-specific climate data and soil properties. The method used is analyzing climate data and soil properties and simulating crop water requirements, actual water use and irrigation scheduling with Cropwat 8.0. Based on the results, the average of crop water requirement (ETP) of palm oil in main nursery is 3.4 mm / day. Based on the water deficit scenario from rainfall and crop water requirements, irrigation is scheduling in April for 1.4 mm, May for 18.3 mm, June for  3.5 mm, July for 44.1 mm and August for 42.8 mm. On a daily scale and taking into account the availability of soil moisture and the water retention of plant roots, the net irrigation scheduling is given at an average of 2.2 mm / day and gross irrigation of 6 mm / day which is given daily depending on rainfall and plant age.

scholarly journals Environmental Effects on Yield and Composition of Essential Oil in Wild Populations of Spike Lavender (Lavandula latifolia Medik.)

Agriculture ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 626
Author(s):  
Montserrat Fernández-Sestelo ◽  
José M. Carrillo
Keyword(s):  
Essential Oil ◽  
Geographic Location ◽  
Lower Latitude ◽  
Annual Rainfall ◽  
Climate Data ◽  
Wild Populations ◽  
Average Yield ◽  
Yield And Quality ◽  
Lavandula Latifolia ◽  
Selection Of

Spike lavender, Lavandula latifolia Medik., is a species of economic importance for its essential oil (EO). The purpose of this study was to estimate the effect of the variable climate and fixed factors such as soil and geographic location on EO yield and quality. The study material was collected in 34 populations from four different Spanish bioregions for three years. The EO extraction from spike lavender leaves and flowers was done with simple hydrodistillation, in Clevenger. Soil samples were also collected. Climate data were provided by the State Meteorological Agency. The EO average yield was obtained for the bioregion mean and in each bioregion. The higher EO yield is related clearly to the climate condition. A greater amount of annual rainfall produced a higher EO yield in the four bioregions and of better quality. Soils richer in organic matter and minerals produced higher EO yield but with less quality. The altitude had little effect on EO yield. Higher altitude favored obtaining higher EO quality. At lower latitude, further south, the populations obtained a higher EO yield. The evaluation of the environmental effect on the EO yield and quality could allow better natural conservation and more accurate selection of the best populations for breeding and spike lavender cultivation protocols.

scholarly journals Groundwater characterization and selection of suitable water type for irrigation in the western region of Bangladesh

2014 ◽  
Vol 7 (1) ◽  
pp. 233-243 ◽  
Author(s):  
Mirza A. T. M. Tanvir Rahman ◽  
A. H. M. Saadat ◽  
Md. Safiqul Islam ◽  
Md. Abdullah Al-Mansur ◽  
Shamim Ahmed
Keyword(s):  
Western Region ◽  
Water Type ◽  
The Western Region ◽  
Groundwater Characterization ◽  
Selection Of

scholarly journals Malaria Burden and Trend Among Clients Seeking Healthcare in the Western Region: A 4-Year Retrospective Study at the Sefwi-Wiawso Municipal Hospital, Ghana

2018 ◽  
Vol 12 (1) ◽  
pp. 404-411
Author(s):  
John G. Deku ◽  
Sylvester Y. Lokpo ◽  
Kenneth K. Kye-Amoah ◽  
Verner N. Orish ◽  
Francis A. Ussher ◽  
...  
Keyword(s):  
Demographic Data ◽  
Secondary Data ◽  
Gender Disparity ◽  
Vulnerable Groups ◽  
Western Region ◽  
Municipal Hospital ◽  
Wet Season ◽  
Malaria Burden ◽  
The Western Region ◽  
And Gender

Background: Malaria cases continue to rise despite sustained efforts directed at eliminating the burden among Ghanaians. This study was aimed at describing the spectrum of malaria burden in a four-year (2013-2016) retrospective review among clients seeking care at the Sefwi-Wiawso Municipal Hospital in the Western Region of Ghana. Materials and Methods: The study analyzed secondary data extracted on 32,629 patients who were referred to the Laboratory for malaria testing from January 2013 to December 2016. Socio-demographic data included age and gender, department of test requisition and malaria results were obtained from the archived Daily Malaria Logbook records. Approval for the study was granted by the authorities of the Sefwi-Wiawso Municipal Hospital. Results: The overall confirmed malaria case was 8629 (26.5%), among under five 1,384 (58.7%), pregnant women 4451 (20.3%) and 14.1% among asymptomatic population. Significant gender disparity in the confirmation of suspected malaria cases was observed with males recording higher rate (45.8%) than females (36.7%). The peak of the malaria epidemic was observed in the wet season (195 cases per month), compared to the dry season (133 cases per month). Conclusion: Cases of malaria is increasing with high rates among vulnerable groups in the Western Region. There is the need to intensify efforts to reduce the burden in the study area especially among vulnerable groups.

scholarly journals Ghana's New Forest National Park

Oryx ◽  
1975 ◽  
Vol 13 (1) ◽  
pp. 34-36 ◽  
Author(s):  
Sonia M. Jeffrey
Keyword(s):  
West Africa ◽  
National Park ◽  
Annual Rainfall ◽  
Western Region ◽  
Forest Reserve ◽  
Large Numbers ◽  
New Forest ◽  
The Western Region

In May 1974 Ghana created its first high forest national park. This is a forest reserve in the Bia tributaries area of the Western Region, comprising 118 square miles of some of the highest forest in West Africa, including primary unlogged forest, with an annual rainfall of 57 inches spread over ten to eleven months. The area was chosen partly for the large numbers of elephants and monkeys. The possibility of a forest national park in this region has been under consideration for at least five years; success was achieved after lengthy negotiations under the keen direction of the Chief Game and Wildlife Officer, Dr E. O. A. Asibey.

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