STUDIES ON CHOCOLATE SPOT DISEASE OF BROAD BEAN AND LOSS OCCURRENCE
Nagwa Mohamed Ahmed Mahmoud;
Abstract
Faba bean (Vicia faba L.) is one of the most important• food legume crops in Egypt, because of high protein content, about 28% and
low. price compared with other protein sources. The national area over the
. I
last ten years (1986-1995) was 127,000 ha with an average seed yield of
2.51 tlha. Losses due to chocolate spot disease was considered as high as more than 50% especially under certain conditions.
This work was carried out to evaluate the amount of losses in seed yield of the three faba bean cultivars Giza 461, Giza 3 and Giza 402 under different levels of inoculum. Also, the effect of sowing date and N-P fertilizer levels were studied. Some physiological studies were undertaken on the causal organism. The following is a summary of the main results :
1- Isolation of the pathogen from different samples collected from three governorates indicated that both Botrytis jabae and B. cinerea were occurred.
2- Botrytis fabae is more pathogenic (virulent), than B. cinerea on the three tested cultivars, with Giza402 as highly susceptible to the three tested isolates.
3- The optimum temperature for mycelial growth and sporulation was
20 oc for B. fabae and B. cinerea .
low. price compared with other protein sources. The national area over the
. I
last ten years (1986-1995) was 127,000 ha with an average seed yield of
2.51 tlha. Losses due to chocolate spot disease was considered as high as more than 50% especially under certain conditions.
This work was carried out to evaluate the amount of losses in seed yield of the three faba bean cultivars Giza 461, Giza 3 and Giza 402 under different levels of inoculum. Also, the effect of sowing date and N-P fertilizer levels were studied. Some physiological studies were undertaken on the causal organism. The following is a summary of the main results :
1- Isolation of the pathogen from different samples collected from three governorates indicated that both Botrytis jabae and B. cinerea were occurred.
2- Botrytis fabae is more pathogenic (virulent), than B. cinerea on the three tested cultivars, with Giza402 as highly susceptible to the three tested isolates.
3- The optimum temperature for mycelial growth and sporulation was
20 oc for B. fabae and B. cinerea .
Other data
| Title | STUDIES ON CHOCOLATE SPOT DISEASE OF BROAD BEAN AND LOSS OCCURRENCE | Other Titles | دراسات على مرض التبقع البنى فى الفول البلدى والخسائر الناتجة عنه | Authors | Nagwa Mohamed Ahmed Mahmoud | Issue Date | 1996 |
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