Showing posts with label CRAFT. Show all posts
Showing posts with label CRAFT. Show all posts

Thursday, December 26, 2019

Paddy production likely to drop

The total paddy production is estimated to be 5,431,549 Metric Tonne (MT) this year – representing some 1.7 per cent decrease compared last year, when the paddy production posted some 5.6 million MT. “The total area of paddy planted also decreased slightly compared to the last year, as it has been estimated to be 1,480,288 hectares this year against 1,491,744 hectares in 2018,” according to a publication that is a joint product of the Ministry of Agricultural and Livestock Development, the World Food Programme, and the CGIAR Research Programme on Climate Change, Agriculture and Food Security (CCAFS) as part of the Nepal Food Security Monitoring System (NeKSAP).
“However, the forecasted land productivity is estimated to be 3.67 MT per hectare. The yield estimates have a prediction uncertainty of ±7.5 per cent,” it reads. “Although the onset of the monsoon was delayed – late mid-June – average rainfall across the country before the onset of the monsoon was close to normal.”
Heavy rainfall across the country’s Terai lowlands on July 11-12 led to extensive flooding, which damaged large areas of cultivation thereby slightly decreasing paddy production,” it reads.
According to the real time stations data provided by the Department of Hydrology and Meteorology, pre-monsoon rainfall exceeded 30-years-of-normal in the eastern and central parts of Nepal, while it was lower than average in the Western part of the country. “Eastern Terai received above average rainfall during the monsoon period that was mainly concentrated during the mid-July leading to excessive flooding,” it reads, adding that Central and Eastern regions received rainfall lower below their 30-year averages during the monsoon months.
Under the research theme on Climate Risk Management, the CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS) developed a crop yield-forecasting tool customised for the South Asia Region known as the CCAFS Regional Agriculture Forecasting Toolbox (CRAFT). CCAFS is a strategic partnership of CGIAR and Future Earth, led by the International Center for Tropical Agriculture (CIAT), which conducts research to identify and address the most important interactions, synergies and tradeoffs between climate change, agriculture and food security.
CRAFT uses historical databases of weather and crop yields and current weather to estimate yields of various crops. The yield forecasting depends on data from various sources such as meteorological data – rainfall, temperature, humidity, bright sunshine hours, wind speed, wet spell etc – agro-meteorological data (phenology), soil data (water holding capacity), remote sensing data and agricultural statistics.
CRAFT simulates plant-weather-soil interactions in quantitative terms and predicts the crop yield over a given area, prior to harvest, provided no extreme (statistically infrequent) conditions occur. These models are based on a ‘common sense’ assumption that weather conditions are the main factor behind the inter-annual (short term) variations for the de-trended crop yield series.

Friday, March 18, 2016

Wheat production set to drop by 20.5 per cent

Nepal's wheat production is estimated to drop by 20.5 percent in the current fiscal year.
Wheat production forecast for 2015-16 is 1,570 metric tons, a 20.5 per cent decrease compared to the production level of 1,975 metric tons in 2014-15, according to CCAFS Regional Agricultural Forecasting Toolbox (CRAFT).
The first advance estimate of 2015-16 wheat production in Nepal, which has been conducted using CRAFT, has also forecast that the current fiscal year's figure is a 16 per cent decline from average production over the last five years.
The significant drop in production is attributed to an estimated five percent decrease in wheat cultivation area nationwide as compared to the 2014-15 season. "Wheat grown area decreased because of two main reasons – severe shortage of fuel for irrigation and land preparation, and limited availability and use of fertilizers – both of which were caused by the political crisis in the Tarai and restricted cross-border trade with India from September 2015 to February 2016," the study report says.
In addition, according to the International Centre for Integrated Mountain Development, cumulative rainfall during this winter season – from November 2015 to January 2016 – was far below the 30-year average.
Official reports from the Department of Hydrology and Meteorology, however, are yet to be published. "Because of inadequate soil moisture due to delayed and poor rains and limited irrigation due to the shortage of fuel, it was assumed in the CRAFT model run that the irrigated area decreased by 25 per cent and wheat plantation was late by 10 days," the report further added.
The preliminary estimate, which will be revised with updated data as the season progresses, has been jointly produced by the Ministry of Agricultural Development (MoAD), World Food Programme (WFP), and the CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS) as part of the Nepal Food Security Monitoring System (NeKSAP).
CRAFT incorporates a crop simulation model (DSSAT), weather and seasonal forecast module (CPT) and a GIS mapping module, and it provides the support for spatial input data, spatial crop simulations, integration of seasonal climate forecasts, spatial aggregation, probabilistic analysis of forecast uncertainty, and calibration of model predictions from historical agricultural statistics, analysis and visualization that increase the authenticity of the estimation and correctness of the forecast.
"The tool helps to provide advance information to farmers, extension agents and policy makers allowing them to manage within-season climate risks to agriculture," the report said, adding that the model has been used in Nepal for a pilot study and is being currently used in Bangladesh, Sri Lanka and India as well.