Effect of Intercropping and Compost Application for the Management of Common Bean Anthracnose (Colletotrichum lindemuthianum) in North Shewa, Central Ethiopia
Issue:
Volume 7, Issue 3, June 2019
Pages:
54-62
Received:
2 May 2019
Accepted:
5 June 2019
Published:
4 July 2019
Abstract: Common bean is grown for its high nutritive, medicinal and market value in Ethiopia. Anthracnose is among the major production constraint within central common bean producing regions of Ethiopia. Field experiments were conducted on two common bean varieties Awash Melka and Mexican 142 at Shewarobit and Ataye in 2016 and 2017 main cropping seasons with the objective of evaluating the effects of row intercropping, compost plus their integration on disease severity of common bean anthracnose. Field experiments revealed maximum disease severity on highly susceptible variety Mexican 142 than Awash Melka at both locations and during both cropping seasons. Significantly, the lowest (26.9%) mean final anthracnose severity was obtained from the integration of intercropping with compost application at Ataye during 2017 and (562% day) mean area under disease progress curve was obtained from the integration of intercropping with compost application at Shewarobit during 2017. Whereas significantly the highest (39%) mean final disease, severity and (849% day) mean AUDPC were recorded from the sole planting control plots in 2016 at Shewarobit. Integration of intercropping with compost application as ecofriendly disease management option was the appropriate management option of common bean anthracnose in the study area. Further studies of integrating management options need to be conducted to reduce the residual effects of agrochemicals.
Abstract: Common bean is grown for its high nutritive, medicinal and market value in Ethiopia. Anthracnose is among the major production constraint within central common bean producing regions of Ethiopia. Field experiments were conducted on two common bean varieties Awash Melka and Mexican 142 at Shewarobit and Ataye in 2016 and 2017 main cropping seasons w...
Show More
Integrated Management of Tomato Late Blight (Phytophtra infestans Mont.) of Tomato (Lycopersicon esculentum MILL.) at Ataye and Shewarobit Districts, Eastern Amhara, Ethiopia
Daniel Keskse,
Negash Hailu,
Eshetu Belete
Issue:
Volume 7, Issue 3, June 2019
Pages:
63-71
Received:
24 January 2019
Accepted:
21 March 2019
Published:
10 July 2019
Abstract: Field experiments were conducted at Ataye and Shewarobit districts during 2017/18 main cropping season to evaluate the fungicide against late blight on tomato varieties under natural conditions and to assess the integrated effect of fungicides (Ridomil MZ 68%WP, Metalaxy (0.25%), More720Wp and Mancozeb) and tomato varieties (Margoble and Melkasalsa) against late blight and yield. The experiments were arranged randomized complete block design in factorial with three replications. Fungicides were applied two weeks intervals starting from the onset of the disease. The integration of varieties and fungicides exhibited significant difference at (p<0.05) in disease parameters, and yield. Significantly, the lowest Percentage severity index (PSI) (28%) with AUDPC (592.67%-days) and the highest yield (50.3 t/ha) were recorded from Melkasalsa variety treated with Ridomil MZ 68% WP at Ataye while the lowest PSI (35%) with AUDPC (630%-days) and the highest yield (43 t ha-1) were recorded from Melkasalsa variety treated with Ridomil MZ 68% WP at Shewarobit. On the contrary the highest PSI (60.7%) with highest AUDPC (1373.17%-days) and the lowest yield (27 t ha-1) were obtained from untreated Margoble at Ataye, while the highest severity (69.3%) with highest AUDPC (1248.33%-days) and the lowest yield (22 t ha-1) were obtained from untreated Margoble at Shewarobit. As compared to yield losses from protected plots with Ridomil MZ 68%WP, the highest fruit yield loss of 44.9% at Ataye and 47% at Shewarobit were recorded from unsprayed Margoble variety. The best management of late blight and the higher yield were obtained from integration of two varieties treated with Ridomil MZ 68% WP. Thus, it is recommended to use tomato varieties with sprays Ridomil MZ 68% gave the highest protection against late blight and the highest yield benefit. However, further extensive studies have to be undertaken for late blight management options through integration of varieties and frequency of fungicide applications that may contribute to sustainability of tomato production in the country.
Abstract: Field experiments were conducted at Ataye and Shewarobit districts during 2017/18 main cropping season to evaluate the fungicide against late blight on tomato varieties under natural conditions and to assess the integrated effect of fungicides (Ridomil MZ 68%WP, Metalaxy (0.25%), More720Wp and Mancozeb) and tomato varieties (Margoble and Melkasalsa...
Show More
