The Effects of Drought on Crop Yields and Yield Variability: An Economic Assessment

Boubacar, Inoussa

doi:10.5539/ijef.v4n12p51

Cited by 34 publications

(29 citation statements)

References 24 publications

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“…It is notable that; 1993 and 2000 were the driest years during the MAM at both Rumuruti and Ndaragwa; while 1998 was the wettest year in both stations during the same season. The recent The findings supports the earlier argument by [26] that revealed that in United…”

Section: Drought Characteristics In Laikipia West Sub-county (1984-2014)supporting

confidence: 81%

Analysis of Temporal Drought Characteristic Using SPI Drought Index Based on Rainfall Data in Laikipia West Sub-County, Kenya

Karanja¹,

Ondimu²,

Recha³

2017

OALib

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Severe drought has affected Kenya in the past decades reducing crop yields leaving millions of people in dire need of food. Drought cycle in Kenya has reduced increasing drought frequency in the recent decades. This study assessed drought characteristics in Laikipia West sub-County which lies in a region classified as arid and semi arid. The specific objective of the study was to analyze seasonal and annual drought characteristics in Laikipia West subCounty between 1984 and 2014. The study adopted documentary review design in the data collection. Standard Precipitation Index was used during the data analysis process. The drought years identified in Laikipia West subCounty were : 1984, 1985, 1987, 1991, 1995, 1999, 2000, 2005, 2008 and 2009. The seasonal drought events shows that for the period under study Laikipia West sub-County has never experience drought during the MAM and OND seasons in the same year. This explains the importance of seasonal climate forecast to crop farmers. The study also established that the average drought cycle in the study area is 3 years. The study recommends construction of mega water reservoirs which could collect water during the wet season to be utilized during the dry seasons. The study also recommends channeling of drought information through the government agencies at the beginning of every season.

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Section: Drought Characteristics In Laikipia West Sub-county (1984-2014)supporting

confidence: 81%

Analysis of Temporal Drought Characteristic Using SPI Drought Index Based on Rainfall Data in Laikipia West Sub-County, Kenya

Karanja¹,

Ondimu²,

Recha³

2017

OALib

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“…CV in the de-trended time series crop yield was taken as a proxy to drought sensitivity. Higher the CV means more is the sensitivity of crop to weather affects (Boubacar, 2012). Since the yield data at Mandal level is not available, district wise data for all the major crops of the district collected from www.agricoop.gov.in, 1998-2012, were analysed.…”

Section: Methodsmentioning

confidence: 99%

Analysing agricultural drought vulnerability at sub-district level through exposure, sensitivity and adaptive capacity based composite index

Murthy

Laxman

Sai

et al. 2014

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:Information on agricultural drought vulnerability status of different regions is extremely useful for implementation of long term drought management measures. A quantitative approach for measuring agricultural drought vulnerability at sub-district level was developed and implemented in the current study, which was carried-out in Andhra Pradesh state, India with the data of main cropping season i.e., kharif. The contributing indicators represent exposure, sensitivity and adaptive capacity components of vulnerability and were drawn from weather, soil, crop, irrigation and land holdings related data. After performing data normalisation and variance based weights generation, component wise composite indices were generated. Agricultural Drought Vulnerability Index (ADVI) was generated using the three component indices and beta distribution was fitted to it. Mandals (sub-district level administrative units) of the state were categorised into 5 classes -Less vulnerable, Moderately vulnerable, Vulnerable, Highly vulnerable and Very highly vulnerable. Districts dominant with vulnerable Mandals showed considerably larger variability of detrended yields of principal crops compared to the other districts, thus validating the index based vulnerability status. Current status of agricultural drought vulnerability in the state, based on ADVI, indicated that vulnerable to very highly vulnerable group of Mandals represent 54% of total Mandals and about 55% of the agricultural area and 65% of the rainfed crop area. The variability in the agricultural drought vulnerability at disaggregated level was effectively captured by ADVI. The vulnerability status map is useful for diagnostic analysis and for formulating vulnerability reduction plans.

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“…Meanwhile, over the next 30 to 50 years with an estimated population of 9-10 billion people, the biggest problem that arises is the food security for growing population, especially in the least developed countries (Beddington 2010). The dilemma is increased when field crops are subjected to numerous inconsiderate climatic hazards like flood, drought, extreme temperature, salinity, pollutants and heat that negatively affect physiological processes, growth and yield of crops (Boubacar 2012). Among these drought stress is one of the most dev-*Corresponding author; E-mail: uafanser@gmail.com;Phone: 0092 3017175236 astating stressful environments for plant growth and production (Farooq et al 2008;Peleg et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Silicon fertilization improves the maize (Zea maysL.) performance under limited moisture supply

Amin

Ahmad

Ali

et al. 2016

Cereal Research Communications

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Field crops are subjected to numerous inconsiderate climatic hazards that negatively affect physiological processes, growth and yield. Drought is one of the major abiotic factors that limits the agricultural productivity especially in the arid and semi-arid areas of the globe. Silicon (Si) is a naturally occurring beneficial nutrient which modulates plant growth and development events and has been known to improve the crop tolerance to abiotic stresses. With the objective to investigate the role of silicon nutrition on maize hybrids under limited moisture supply, a two year field study was conducted during 2010-11 at Post Graduate Research Station (PARS), University of Agriculture Faisalabad, Pakistan. We evaluated growth of two maize hybrids P-33H25 and FH-810 under well watered (100% field capacity) and water deficit situation (60% field capacity) as affected by Si application. Silicon was added in soil @ 100 mg/kg using Calcium Silicate as source. Water deficit condition significantly reduced agro-morphological and physiological attributes of maize plants. Silicon application significantly increased the plant height, leaf area index, yield and related attributes along with improvement in photosynthetic rate, leaf water status and osmotic adjustment under limited moisture supply. It was concluded that silicon application to droughtstressed maize enhanced its growth and yield owing to improved photosynthetic rate, higher osmotic adjustment, increased water status and lowered transpiration.

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The Effects of Drought on Crop Yields and Yield Variability: An Economic Assessment

Cited by 34 publications

References 24 publications

Analysis of Temporal Drought Characteristic Using SPI Drought Index Based on Rainfall Data in Laikipia West Sub-County, Kenya

Analysis of Temporal Drought Characteristic Using SPI Drought Index Based on Rainfall Data in Laikipia West Sub-County, Kenya

Analysing agricultural drought vulnerability at sub-district level through exposure, sensitivity and adaptive capacity based composite index

Silicon fertilization improves the maize (Zea maysL.) performance under limited moisture supply

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