Infestation Of Crops Research Articles

Effect of Bio-Rational Approaches on the Larval Population and Pigeonpea Pod Damage by Exelastis atomosa (Wlsm.)

Effect of bio-rational approaches such as intercropping and application of bio-pesticide on the larval population, pod damage, grain damage and grain weight loss by plume moth (Exelastis atomosa (Wlsm.)) infesting pigeonpea (Cajanus cajan (L.) Millsp.) was studied. Pigeonpea intercropped with maize, pearl millet, sorghum, rice and black gram had significant effect on the larval population of plume moth when compared with pigeonpea sole crop infestation. The pigeonpea pod damage, grain damage and grain weight loss due to larval infestation in different pigeonpea intercrops and pigeonpea sole crop differed significantly however few exceptions were also recorded. The average larval population, pod damage, grain damage and grain weight loss in different intercrops varied from 0.25 to 0.39 larva/plant, 1.29 to 1.79%, 0.41 to 0.55% and 0.25 to 0.35%, respectively. The pigeonpea sole crop had recorded relatively higher larval population (0.39 larva/plant), pod damage (2.03%), grain damage (0.85%) and grain weight loss (0.59%) than the intercropped pigeon pea. The two sprays of NSKE 5% (first at flowering and pod formation stage and second after 20 days) were found superior in reducing larval population, pod damage, grain damage and grain weight loss. However, the plots devoid of any biopesticidal treatment had maximum larval population (0.68 larva/plant), pod damage (2.75%), grain damage (0.86%) and grain weight loss (0.60%) by E. atomosa.

INDIGENOUS CLIMATE CHANGE ADAPTATION STRATEGIES AS PRACTICED BY FARM HOUSEHOLDS IN UDI LGA OF ENUGU STATE, NIGERIA

The study is on the indigenous climate change adaptation practices among farm households in Udi Local Government Area; Enugu State. 60 respondents were randomly selected for the study. Primary data were collected using a set of well-structured questionnaire. Data were analyzed using descriptive statistics, likert scale and inferential statistics. Result of the study showed that majority of the respondents (65%) was males and majority (51.7%) from household size of between 5 to 10 persons. About 55% of the respondents had at least Secondary school education and 93.3% engaged in farming as major occupation. 81.7% of the respondents have been in farming for more than five years (81.7%). The respondents·awareness on climate change includes impact of high temperature (76.6%), drying up of rivers/streams (63.3%), increased. Pest infestation (63.3%), increased disease infestation (51.7%) and poor quality of stored crops (58.3%). Indigenous negative adaptation practices practiced by the farmers were increased use of chemical fertilizers (63.3%), increased use of pesticides and insecticides (61.7%), cutting down of trees (66.7%), bush burning (71.7%). Continuous grazing (53.3%) while positive practices identified were rain water harvesting (60%), multiple or inter-cropping (65%), tree planting on farm lands (65%) and on-farm construction of ridges and gullies (60%). However, the constraints identified in adoption of these practices were poor access to credit (86.7%), lack of efficient input (83.3%), lack of awareness (78.3%), and lack 9f land (57.7%). The study therefore recommends sensitization on indigenous adaptation practices to distinguish between positive and negative approaches of adaptation; there is need for integration of fertilizer trees such as Faidherbia albida on farm lands for nutrient supply, erosion control and domestic use; more access to credit facilities; improved awareness creation by the relevant officers on all the impacts, and the needed adaptation practices to help curb the menace of climate change on agricultural lands and its effects on farmers' livelihoods.

Influence of some forecrops on weed infestation in sugar beet crops

Influence of some forecrops on weed infestation in sugar beet crops

Ефективність сучасних фунгіцидів проти жовтої іржі (PUCCINIA STRIIFORMIS WEST. F. SP. TRITICI ERIKSS. ET HENN) на озимій пшениці у Південному степу України

Ефективність сучасних фунгіцидів проти жовтої іржі (PUCCINIA STRIIFORMIS WEST. F. SP. TRITICI ERIKSS. ET HENN) на озимій пшениці у Південному степу України

Planting density impact on weed infestation and the yield of Miscanthus grown on two soil types

The assessment of the weed infestation effect on biomass yield of Miscanthus × giganteus in the first year of its commercial yield was conducted on two types of soil with different productive ability – Luvic Chernozem and Calcic Gleysol. The formed mass of weeds was higher on Luvic Chernozem and the infestation had grown according to the stages of Miscanthus growth. The biomass of weeds depended on the planting density of Miscanthus as well as on the weather conditions during the studied years. Weed infestation of crops very significantly influenced the formation of aboveground biomass of Miscanthus, so that the yields in the first year of commercial harvesting in the control where the weeds were removed manually were significantly higher compared to the crops in which weeds were not removed. The obtained results showed that weeds significantly affect the initial growth and development of Miscanthus plants that are, in general, slow, especially in the year of the crop establishment. The study evaluates the impact of a manual method of suppression and weed infestation of crops on the commercial yield of Miscanthus.

Productivity and Level of Weed Infestation of Legume Meadow Grasses Depending On Grass Species and Fertilization

The experiment was conducted in the period of 2013-2015 in the experimental field of RIMSA-Troyan. The influence of bio-fertilizers, such as boron humate and molybdenum humate at doses of 1600 ml/ha, was studied. They were applied in the beginning of bud-formation period on legumes, such as bird's-foot-trefoil, sainfoin, and red clover. The highest positive effect of studied bio-fertilizers over productivity was found in the treatment of grassland of sainfoin. Its yield increased, after the application of boron humate, in comparison with the control by 8.3%, and molybdenum humate increased the productivity of red clover by 4.0%. Both bio-fertilizers showed a negative effect in relation to dry matter yield of bird's-foot trefoil. Foliar treatment with boron and molybdenum humate of bird's-foot-trefoil, red clover and sainfoin decreased the level of weed infestation of crops and had an influence over the biological characteristics of grass species and meteorological conditions. As a result of the influence of bio-fertilizers, the stem height of sainfoin and red clover increased, which had a favorable influence over productivity of their grasslands.

ЗАСОРЕННОСТЬ И СТРУКТУРА УРОЖАЯ ПШЕНИЦЫ В ЗАВИСИМОСТИ ОТ ПРЕДШЕСТВЕННИКОВ

The purpose of research is to develop methods of increasing and stabilization of wheat production, providing improved phytosanitary condition of crops and crop structure in the conditions of Northern Kazakhstan. Experimental studies were conducted in Kostanai Scientific Research Institute of Agriculture (Republic of Kazakhstan). In the experiment evaluated wheat predecessors in field crop rotations with different structure and set of crops (legumes, oilseeds). On average for the period 2009-2014 less clogged were the first crops of wheat after a couple more clogged – wheat crops for peas and oilseed rape. When sowing the first crop of wheat after the pair number of annual weeds during the growing season has increased by an average of 3.3 times, perennial – 1.5 times. In the case of wheat after pea content of annual weeds has increased 1.4 times, the amount of perennial weeds on average remained at the same level. When sowing wheat after oilseed rape on the period of harvesting the number of annual weeds on average increased by 1.6 times, the amount of perennial weeds decreased by 2.0 times. Thus, the level of infestation of crops the main grain of spring wheat culture in the beginning of the growing season was determined by how effective weed control in crops of previous crops, and at the end of the growing season, before the harvest, and still protect the system in the year of sowing. In terms of the productivity of the average for 2009-2014, research has proved better option sowing wheat crop after the first couple. When plant density of 195 pcs./m2 was formed 294 productive stems, ie, productive tillering was 1.5, with the number of grains per ear – 24.7 pc. and mass of 1000 seeds – 32.3 g. Good crop structure indicators wheat variations showed after peas and oilseed rape. Productive tillering in these cases was 1.4, the mass of 1000 seeds after the pea – 31.9 g, after oilseed rape – 32.0 g.

Ovipositional preference, fidelity, and fitness of Drosophila suzukii in a co-occurring crop and non-crop host system

Drosophila suzukii (Matsumura) is a devastating pest of soft-skinned fruits including blackberries and raspberries. Management of this pest is focused on preventing infestation in crops, but non-crop hosts may play an important role in enabling D. suzukiito persist in the absence of cultivated hosts. Drosophila suzukii may also infest fruits of both crop and non-crop hosts concurrently. Our goals were to determine whether (1) D. suzukiiprefers to oviposit in cultivated blackberry, Rubus L. subgenus rubus Watson, or American pokeweed, Phytolacca americana, a non-crop host commonly found along field edges, (2) D. suzukii prefers to oviposit into the same host from which it emerged, and (3) performance differs between D. suzukii progeny that develop in blackberries or pokeweed berries. Although the pest was able to infest both hosts at the same rate, we found that D. suzukii females emerging from pokeweed preferred to oviposit into blackberries, while females emerging from blackberry had no preference. Progeny that developed in blackberries were more fit than progeny that developed in pokeweed berries based on several measures. In field locations, cultivated blackberries and pokeweed berries only overlapped in availability for a short period of time, and infestation rates were variable between blackberries and pokeweed berries collected during that period. Nonetheless, these results suggest that non-crop hosts may facilitate the invasion of D. suzukii and perpetuate infestation of cultivated hosts under certain circumstances.

Novel pathway of cypermethrin biodegradation in a Bacillus sp. strain SG2 isolated from cypermethrin-contaminated agriculture field.

Pesticides belonging to pyrethroid group are widely used in agricultural fields to check pest infestation in different crops for enhanced food production. In spite of beneficial effects, non-judicious use of pesticides imposes harmful effect on human health as their residues reach different food materials and ground water via leaching, percolation and bioaccumulation. Looking into the potential of microbial degradation of toxic compounds under natural environment, a cypermethrin-degrading Bacillus sp. was isolated from pesticide-contaminated soil of a rice field of Distt. Udham Singh Nagar, Uttarakhand, India. The bacteria degraded the compound up to 81.6 % within 15 days under standard growth conditions (temperature 32 °C pH 7 and shaking at 116 rpm) in minimal medium. Analysis of intermediate compounds of biodegraded cypermethrin revealed that the bacteria opted a new pathway for cypermethrin degradation. GC–MS analysis of biodegraded cypermethrin showed the presence of 4-propylbenzoate, 4-propylbenzaldehyde, phenol M-tert-butyl and 1-dodecanol, etc. which was not reported earlier in cypermethrin metabolism; hence a novel biodegradation pathway of cypermethrin with Bacillus sp. strain SG2 is proposed in this study.Electronic supplementary materialThe online version of this article (doi:10.1007/s13205-016-0372-3) contains supplementary material, which is available to authorized users.

Earlier activity of Drosophila suzukii in high woodland landscapes but relative abundance is unaffected

Natural habitats can affect the population dynamics of mobile insects, and the spatial and temporal effects on agricultural pest species may be especially relevant for tailoring management strategies to the farm context. Drosophila suzukii Matsumura (Diptera: Drosophilidae) is suspected to utilize woodland habitat for wild hosts and overwintering with possible adverse effects of woods on adjacent fruit crops. A two-year study in the Upper Midwest, USA examined if the amount of woodland in the landscape affects early season activity and relative abundance of D. suzukii in raspberry fields. Thirty-five farms were selected to span a gradient of low-to-high woodland area at the 1.5 km scale. The first capture of D. suzukii occurred earlier at farms in high woodland landscapes. However, woodland area was not correlated with metrics of D. suzukii abundance in raspberry (growth rate, peak, fall, or total fly catch) suggesting similar crop infestation risk across landscapes. However, woodland area was negatively correlated with fall fly catch in the adjacent woods and significantly more flies were captured in the woods than raspberry. This study suggests woodland landscapes affect early season crop risk and the high numbers of D. suzukii in the woods have implications for understanding overwintering.

Parthenium infestation and yield losses in agricultural crops

<i>Parthenium</i> infestation and yield losses in agricultural crops

Ability of Tuta absoluta (Lepidoptera: Gelechiidae) to develop on alternative host plant species

AbstractThe tomato leafminer, Tuta absoluta Meyrick (Lepidoptera: Gelechiidae), is a widespread devastating pest reported to develop on economically important solanaceous crops. The characterisation of its host range could help to understand and prevent the dispersion behaviour of the insect in the environment. In this study, the ability of T. absoluta to develop on 12 cultivated or non-cultivated plants including Solanaceae, Amaranthaceae, Convolvulaceae, Fabaceae, and Malvaceae species under laboratory conditions was assessed. For each plant species, we monitored the development times of immature stages, survival, sex ratios, and adult fecundity rates. All the six tested non-solanaceous plants, including Chenopodium Linnaeus (Amaranthaceae), Convolvulus Linnaeus (Convolvulaceae), and Malva Linnaeus (Malvaceae) species, were not able to sustain (i.e., allow growth and development) T. absoluta larvae. Solanum Linnaeus (Solanaceae) species were the most suitable host plants for the pest, but others could be opportunistically colonised with fewer incidences. Tuta absoluta appears to be strongly related to solanaceous plants that would predominantly support self-sustaining field populations. Preventing crop infestation by removing potential host plants in the immediate field vicinity and culture rotations with non-solanaceous crops is of primary importance.

Suitable Hosts of Root Knot Nematode Attack: An Assessment on the Basis of Morphological Size Variations and Population Density under Field Conditions

Root knot nematodes (Meloidogyne species) are major pests of vegetable crops causing serious losses in quantity and quality of crop yield. This study involves an assessment of their suitable hosts on the basis of variations in their population densities and body sizes in different vegetable crop plants under field conditions. A random survey of root knot nematode infestation in vegetable crops was conducted in 9 villages of Abhanpur block, Chhattisgarh state, Central India, from January 2012 to March 2012. Diseased plants were identified on the basis of above ground symptoms and soil and root samples collected by digging. Extraction of nematodes was done by Cobb’s sieving and decantation method and Baerman’s funnel technique. Identification was done microscopically by morphological examination of perineal patterns of female nematodes. Body sizes were measured by using an eyepiece/ocular micrometer. Twenty nine percent of the total farm area surveyed suffered from root knot nematode attack. Among the several genera of vegetable crop plants surveyed, Lycopersicon esculentum, Dolichos lablab, Solanum melongena, Momordica charantia, Daucus carota,Capsicum annum,Cucumis sativus had root galls. Three species of root knot nematodes Meloidogyne incognita, M. javanica, M. areneria were identified from the above hosts and a comparative morphometric analysis of the body, head and neck size ratios of females were done. Non-significant body and head size variations existing between the females from D. lablab, S. melongena, C. annum, D. carota, L. esculentum showed that all the crops are equally susceptible to root knot nematode attack. However, on the basis of nematode population density, D. carrota appears to be the best suitable host of the Meloidogyne species other than L. esculentum and S. melongena.

Downregulation of transcription factor aflR in Aspergillus flavus confers reduction to aflatoxin accumulation in transgenic maize with alteration of host plant architecture.

We report success of host-induced gene silencing in downregulation of aflatoxin biosynthesis in Aspergillus flavus infecting maize transformed with a hairpin construct targeting transcription factor aflR. Infestation of crops by aflatoxin-producing fungi results in economic losses as well as negative human and animal health effects. Currently, the control strategies against aflatoxin accumulation are not effective to the small holder farming systems in Africa and this has led to widespread aflatoxin exposure especially in rural populations of sub-Saharan Africa that rely on maize as a staple food crop. A recent strategy called host-induced gene silencing holds great potential for developing aflatoxin-resistant plant germplasm for the African context where farmers are unable to make further investments other than access to the germplasm. We transformed maize with a hairpin construct targeting the aflatoxin biosynthesis transcription factor aflR. The developed transgenic maize were challenged with an aflatoxigenic Aspergillus flavus strain from Eastern Kenya, a region endemic to aflatoxin outbreaks. Our results indicated that aflR was downregulated in A. flavus colonizing transgenic maize. Further, maize kernels from transgenic plants accumulated significantly lower levels of aflatoxins (14-fold) than those from wild type plants. Interestingly, we observed that our silencing cassette caused stunting and reduced kernel placement in the transgenic maize. This could have been due to "off-target" silencing of unintended genes in transformed plants by aflR siRNAs. Overall, this work indicates that host-induced gene silencing has potential in developing aflatoxin-resistant germplasm.

Zmiany w zachwaszczeniu kukurydzy w południowo-zachodnim rejonie Polski w latach 1963–2013

The changes presented in the floristic list revealed that in the years 1963–1972 the following weed species dominated in the studied corn crops: Chenopodium album, Echinochloa crus-galli, Elymus repens, Cirsium arvense, Sinapis arvensis, Galinsoga parviflora and Polygonaceae. This weed composition was mainly affected by a rotation and perennial cultivation of corn for silage. A similar infestation occurred in the years 1973 to 1982, but cover indexes were higher for Ch. album, E. crus-galli, and Amaranthus retroflexus and lower for perennial species. Large-area cultivation of maize and widespread use of herbicides were the major factors that affected that situation. In the years 1983 to 1992 A. retroflexus appeared also fairly frequently in the list of segetal flora. More species diversity compared to previous periods was recorded and it was caused by transformation of ownership in agriculture. In the years 1993–2002 simple tillage systems, application of monocultures and restoring fallow land affected on weed infestation of corn crops. This pattern of weed composition continued in the years 2003–2013 but with greater intensity of thermophilic species. Zmiany na liście florystycznej uprawy kukurydzy w latach 1963–1972 wykazały dominację: komosy białej, chwastnicy jedno-stronnej, perzu właściwego, ostrożenia polnego, gorczycy polnej, żółtlicy drobnokwiatowej oraz rdestów, na którą głównie wpływało stosownie płodozmianów oraz wieloletnia uprawa kukurydzy w użytkowaniu kiszonkowym. Podobny stan zachwaszczenia występował w latach 1973–1982, jednak współczynniki pokrycia dla komosy białej, chwastnicy jednostronnej i szarłatu szorstkiego były wyższe, a niższe dla gatunków wieloletnich, co wynikało z wielkoobszarowej uprawy kukurydzy i powszechnego stosowania herbicydów. W latach 1983–1992 na liście flory segetalnej dominował również szarłat szorstki. Notowano większe zróżnicowanie gatunkowe na co głównie oddziaływały przekształcenia własnościowe. W latach 1993–2002 na stan zachwaszczenia upraw kukurydzy wpłynęło stosowanie uproszczeń uprawowych, monokultury oraz zagospodarowywanie odłogów. Podobny stan zachwaszczenia utrzymywał się w latach 2003–2013, jednak z większym udziałem gatunków ciepłolubnych.

Striga species distribution and infestation in cereal food crops of northern Côte d’Ivoire

Most cereal food crops in Côte d'Ivoire are infested by Striga species. In this study the distribution, abundance and degree of infestation of Striga species were determined. Infested areas under cereal crops were estimated. Data was collected through extensive and intensive surveys and field visits. According to the updated map of Striga infestation, infested areas covered all the north of the country between latitudes 8°47.17' N to 10°38.84' N and longitudes 2°47.68' W to 7°55.20' W. The infested zone covered 3,191,850 hectares of farmland. 71.8% of the villages located in the region were infested by Striga species. The hypothesis of an extension of Striga infestations according to a north-south gradient was confirmed. Infestations began in the Sudan Savannah zone and have now reached half of the sub-Sudanian Savannah zone. Striga hermonthica, with a frequency of 97.1%, was the most abundant species under cereal crops, followed by Striga aspera (2.0%) and Striga asiatica (0.9%). Striga gesnerioides was not recorded on cowpea. Mutants of S. hermonthica and S. aspera with white flowers were identified. Red-flowered morphotypes of S. asiatica were found parasitizing upland rice. S. hermonthica is a major threat to cereal crop production in northern Côte d'Ivoire where it severely infested 57.2% (268,250 ha) of lands under maize (108,160 ha), millet (38,300 ha), sorghum (30,360 ha) and upland rice (91,430 ha). The infestation rates under millet, maize, sorghum and upland rice were 65.9%, 56.5%, 51.0% and 40.5%, respectively. Striga has today become a major national threat to the production of these cereals as well as to food security in endemic areas.

Effect of ploughing depth and mechanical soil loading on soil physical properties, weed infestation, yield performance and grain quality in sole and intercrops of pea and oat in organic farming

The effect of ploughing depth and mechanical soil loading on the performance of pea sole crops, oat sole crops and pea–oat intercrops was investigated in field experiments under organic farming conditions at two sites in Germany in 2009 and 2010. The two ploughing depths were short-term shallow ploughing to a soil depth of 7–10cm and deep ploughing to 25–30cm. Wheel loads of 26 and 45kN, which correspond to typical rear wheel loads of field machinery used during sowing operations, were compared to an uncompacted control. Shallow ploughing resulted in a greater penetration resistance in the 14–28cm soil layer compared to deep ploughing. An increase in mechanical soil loading intensity increased the bulk density and decreased the air capacity in the 10–15cm soil layer, whereas the penetration resistance was not affected. The annual weed infestation in pea sole crops was higher after shallow than after deep ploughing at both sites. Pea–oat intercrops compensated for the higher weed infestation after shallow ploughing at one site due to their excellent weed suppressive ability. Dependent on oat productivity, pea–oat intercrops produced comparable or higher grain and protein yields than pea sole crops. Intercropped pea yield components and grain protein yields were significantly lower than those of sole cropped peas. The ploughing depth did not affect pea grain yields in either year and oat yields in 2009. Due to a better emergence, the grain and protein yield of sole and intercropped oats were significantly higher after shallow ploughing in 2010. Mechanical soil loading did not have any effect on the yield performance of pea sole crops, oat sole crops and pea–oat intercrops in 2009. In 2010, mechanical soil loading of 26kN and 45kN decreased the pea grain yield by 12.1% and 20.8% respectively, regardless of sole or intercropped. Neither the grain yield nor the grain quality of sole and intercropped oats was affected by the mechanical soil loading in 2010. Grain and crude protein yields of total crop stands decreased with increasing mechanical soil loading after deep ploughing, whereas no significant differences were revealed after shallow ploughing. The present study confirms the positive qualities of pea–oat intercrops with regard to weed suppression and plant performance. Shallow ploughing mitigates the risk of a decrease in crop performance caused by heavy field traffic and provides an alternative to deep ploughing even in low weed competitive organically farmed grain legumes.

Seed loss and volunteer seedling establishment of rapeseed in the northernmost European conditions: potential for weed infestation and GM risks

Rapeseed soil seed bank development and volunteer plant establishment represent substantial risk for crop infestation and GM contamination. This study was designed to complement such investigations with novel understanding from high latitude conditions. Four experiments were designed to characterise seed loss at harvest, persistence, viability and capacity for volunteer seedling establishment, as well as impact of management measures on soil seed bank dynamics. Oilseed rape was the primary crop investigated due to the availability of GM cultivars and because of the increasing importance. Harvest losses and soil seed bank development were significant. Volunteer seedlings emerged at reasonably high rates, especially in the first autumn after harvest, but about 10% of buried seeds maintained their viability for at least three years. Soil incorporation methods had no major effect on numbers of volunteer seedlings, but herbicide treatments controlled volunteer seedlings efficiently, though not completely, due to irregular timing of seedling emergence.

Abundância sazonal de percevejo-do-colmo do arroz

A população de percevejo-do-colmo (Tibraca limbativentris) vem elevando-se, nos últimos anos, posicionando-o como uma das principais pragas da cultura do arroz irrigado, na região do Planalto da Campanha do Rio Grande do Sul. Fatores favoráveis ao longo do ano propiciam condições para sua infestação nas lavouras e posterior hibernação. O presente estudo objetivou verificar a variação populacional do percevejo do-colmo, em condições de lavoura comercial de arroz irrigado e sítios de hibernação. Para tanto, realizou-se levantamento populacional de ninfas e adultos. Verificou-se que o fotoperíodo e a temperatura foram os fatores que mais afetaram a população do inseto, levando a um período de hibernação de 10 meses. As operações de manejo também influenciaram na redução da população.

Assessing the farmers perception of climate variability and change: A case study of Miesso-Assebot Plain, Eastern Ethiopia

Assessment of farmers’ perception and adaptation mechanisms at local level has enormous advantages in Ethiopia, where the driver of the economy is agriculture. This study was conducted to assess the perceptions of farmers to climate change and increased climate variability, and to identify the potential adaptation options. Most farmers noted an increase in temperature and decrease in precipitation in the last fifty years. The farmers’ perception of increasing temperature was in accordance with the statistical climate data record; however, the farmers could not differentiate between consistent changes in climate and yearly rainfall fluctuation. Moreover, majority of the farmers were aware of frequent drought occurrence, shift in onset date and early withdrawal of rainfall. As a result, the farmers indicated decreased diversity of cultivated crops, changes in farming practices, new patterns of diseases, crop infestations with new weed species and frequent total crop failures. Furthermore, the majority of the respondents perceived water shortage, great loss of biodiversity and forest resources, and decline in soil fertility as the most serious impact of climate change. Use of different planting dates, on farm soil and water conservation, use of local and early maturing varieties were the major adaptation strategies practiced by farmers to mitigate climate change impacts at Miesso. However, production of drought tolerant cultivars with optimum maturity periods, introduction of new crops, varieties and crop management practices that go in line with the changing climate are recommended to offset climate change impacts on crop production at Miesso-Assebot plain, Eastern Ethiopia. Key words: Climate variability and change, perception, adaptation options, Miesso-Assebot Plain.