Effects of storage methods, storage time and different agro-ecological zones on chemical components of stored sorghum grain in Hararghe, Ethiopia

2006 ◽  
Vol 42 (4) ◽  
pp. 445-456 ◽  
Author(s):  
Mashilla Dejene ◽  
Jonathan Yuen ◽  
Roland Sigvald
Keyword(s):  
Storage Time ◽  
Chemical Components ◽  
Ecological Zones ◽  
Storage Methods ◽  
Sorghum Grain ◽  
Agro Ecological Zones

scholarly journals EFFECTS OF STORAGE CONDITIONS FOR LARGE ROUND BALES ON QUALITY OF GRASS-LEGUME HAY

1989 ◽  
Vol 69 (4) ◽  
pp. 955-961 ◽  
Author(s):  
L. F. LAFLAMME
Keyword(s):  
Storage Time ◽  
Storage Conditions ◽  
Superficial Layer ◽  
Chemical Components ◽  
Sample Storage ◽  
Plastic Bag ◽  
Large Round ◽  
Storage Methods

Two experiments were conducted to assess the effects of storage conditions on the quality of large round bales (LRB). Samples were taken at 75-d intervals from LRB stored inside, outside single bales covered with a 15-mm black polyethylene plastic bag, outside uncovered as single bales, outside uncovered in a single row and outside uncovered in a double stacked row. Bales were sampled at depths of 0–15, 15–30 and 30–45 cm. Time, storage and depth factors had an influence on the chemical components of the LRB except for protein. Weathering had the most effect after 150 d of storage and with LRB stored uncovered and in the top 15-cm layer. Significant (P < 0.05) interactions in in vitro dry matter digestibilities were found for storage time × depth of sample, storage time × storage methods and for depth of sample × storage methods. Under the conditions of our experiments, weathering damages were limited to the superficial layer of LRB left uncovered. Key words: Large round bales, weathering, storage, moisture

Impact of environmental conditions and seed physico-chemical characteristics on the resistance of cowpea genotypes to Callosobruchus maculatus F. (Coleoptera: Chrysomelidae) infestation

2018 ◽  
Vol 109 (05) ◽  
pp. 595-603 ◽  
Author(s):  
D. Kosini ◽  
E.N. Nukenine ◽  
C. Saidou ◽  
J.-B.T. Noubissié ◽  
S. Dolinassou
Keyword(s):  
Callosobruchus Maculatus ◽  
Insect Pests ◽  
Chemical Components ◽  
Chemical Characteristics ◽  
Subsistence Farming ◽  
Insect Infestation ◽  
Breeding Programs ◽  
Ecological Zones ◽  
Physico Chemical ◽  
Agro Ecological Zones

AbstractThere is a need to improve research and extension documentation to assist farmers in making better use of the available resistant cowpea genotypes to insects attack during storage. A study was conducted to determine the resistance of ten cowpea genotypes [Vigna unguiculata (L.) Walp.] to Callosobruchus maculatus F. attack in the Sudano-Guinean and Sudano-Sahelian agro-ecological zones (SS) of Cameroon. Thereafter, seeds were analyzed for physical properties and chemical composition to determine the main parameters of their resistance against C. maculatus. The SS was more suitable for insect infestation. Genotypes were classified into resistant to highly susceptible. Results showed that the physical characteristics of seeds were less important than the chemical components for conferring resistance to C. maculatus. Two genotypes, Samira and Lade, consistently demonstrated high tolerance to infestation by C. maculatus, and therefore may be recommended for use in breeding programs as a source of resistance and then to minimize the dependence on insecticides for the control of insect pests under subsistence farming conditions in Cameroon.

scholarly journals Towards Understanding Variability in Droughts in Response to Extreme Climate Conditions over the Different Agro-Ecological Zones of Pakistan

2021 ◽  
Vol 13 (12) ◽  
pp. 6910
Author(s):  
Adil Dilawar ◽  
Baozhang Chen ◽  
Arfan Arshad ◽  
Lifeng Guo ◽  
Muhammad Irfan Ehsan ◽  
...  
Keyword(s):  
Pearson Correlation ◽  
Principal Component ◽  
Mitigation Strategies ◽  
Precipitation Extremes ◽  
Climate Mitigation ◽  
Mean Annual Temperature ◽  
Climate Extreme ◽  
Ecological Zones ◽  
The Mean ◽  
Agro Ecological Zones

Here, we provided a comprehensive analysis of long-term drought and climate extreme patterns in the agro ecological zones (AEZs) of Pakistan during 1980–2019. Drought trends were investigated using the standardized precipitation evapotranspiration index (SPEI) at various timescales (SPEI-1, SPEI-3, SPEI-6, and SPEI-12). The results showed that droughts (seasonal and annual) were more persistent and severe in the southern, southwestern, southeastern, and central parts of the region. Drought exacerbated with slopes of −0.02, −0.07, −0.08, −0.01, and −0.02 per year. Drought prevailed in all AEZs in the spring season. The majority of AEZs in Pakistan’s southern, middle, and southwestern regions had experienced substantial warming. The mean annual temperature minimum (Tmin) increased faster than the mean annual temperature maximum (Tmax) in all zones. Precipitation decreased in the southern, northern, central, and southwestern parts of the region. Principal component analysis (PCA) revealed a robust increase in temperature extremes with a variance of 76% and a decrease in precipitation extremes with a variance of 91% in the region. Temperature and precipitation extremes indices had a strong Pearson correlation with drought events. Higher temperatures resulted in extreme drought (dry conditions), while higher precipitation levels resulted in wetting conditions (no drought) in different AEZs. In most AEZs, drought occurrences were more responsive to precipitation. The current findings are helpful for climate mitigation strategies and specific zonal efforts are needed to alleviate the environmental and societal impacts of drought.

Stock and stability of organic carbon in soils under major agro-ecological zones and cropping systems of sub-tropical India

2021 ◽  
Vol 312 ◽  
pp. 107317
Author(s):  
Nirmalendu Basak ◽  
Biswapati Mandal ◽  
Ashim Datta ◽  
Manik Chandra Kundu ◽  
Arvind Kumar Rai ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Cropping Systems ◽  
Ecological Zones ◽  
Agro Ecological Zones

scholarly journals Comparative Experimental Effects of Intercropping and Cypermethrin on Insect Pest Infestation and Yield of Maize, Cowpea and Okra in Two Cameroonian Agro-Ecological Zones

2021 ◽  
Vol 3 (2) ◽  
pp. 383-393
Author(s):  
Patient Farsia Djidjonri ◽  
Nukenine Elias Nchiwan ◽  
Hartmut Koehler
Keyword(s):  
Field Experiments ◽  
Insect Pests ◽  
Cropping Systems ◽  
Insect Pest ◽  
Maize Yield ◽  
Ecological Zones ◽  
Pest Infestation ◽  
Final Yield ◽  
Cropping Seasons ◽  
Agro Ecological Zones

The present study investigates the effect of intercropping (maize-cowpea, maize-okra, maize-okra-cowpea, okra-cowpea) compared to insecticide application on the level of infestation of insect pests and the final yield of maize, cowpea and okra. Field experiments were conducted during the 2016 and 2017 cropping seasons in the Guinean Savannah (Dang-Ngaoundere) and Sudano Sahelian (Gouna-Garoua) agro-ecological zones in Cameroon. Our experimental design was a split plot arrangement in a randomized complete block with four replications. The main factor was assigned to the use of insecticide (Cypermethrin) and sub plots were devoted for cropping systems. We compared the efficiency of intercropping to that of Cypermethrin application on the Yield of maize, cowpea and okra as influenced by insect pest damages. The comparison of monocropped sprayed by Cypermethrin to unsprayed showed that, in Dang, insect pests reduced maize yield by 37% and 24% in 2016 and 2017, respectively, whereas in Gouna, it was lower than 8% during the both years. Reduction in seed yield by insect pests on cowpea in Dang represented 47% and 50% in 2016 and 2017, respectively, whereas in Gouna, it was 55% and 63% in 2016 and 2017, respectively. For okra, insect pests reduced okra fruit yield by 25% and 44% in Dang and 23% and 28% in Gouna, respectively, in 2016 and 2017. Crop yield was lower in intercropping compared to monoculture due to competition of plants in association on different resources. Considering the total yields obtained from each intercropping, intercropping trials resulted generally in higher yields compared to mono-culture (LER > 1) in both sites and years but the respective yields were quite different. On the basis of the results obtained, we recommend maize-cowpea intercropping as a sustainable solution to reduce the infestation level of their pest insects.

Evaluation of potential crop productivity based on remote sensing and agro-ecological zones around the world

2017 ◽  
Vol 33 (7) ◽  
pp. 713-722
Author(s):  
Hongyan Wang ◽  
Qiangzi Li ◽  
Xin Du ◽  
Longcai Zhao ◽  
Na Wang
Keyword(s):  
Remote Sensing ◽  
Crop Productivity ◽  
Ecological Zones ◽  
The World ◽  
Agro Ecological Zones

Evaluation of GRACE derived groundwater storage changes in different agro-ecological zones of the Indus Basin

2021 ◽  
pp. 127369
Author(s):  
Fazlullah Akhtar ◽  
Rana Ali Nawaz ◽  
Mohsin Hafeez ◽  
Usman Khalid Awan ◽  
Christian Borgemeister ◽  
...  
Keyword(s):  
Indus Basin ◽  
Groundwater Storage ◽  
Ecological Zones ◽  
Agro Ecological Zones
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