PNABD246.pdf

*0423 Prasad, K.S. ; Rao, P.R. ; Wadia, K.D.R. 1983. Protomycopsis leaf
spot of green gram. INDIAN PHYTOPATHOLOGY, v.36(1):178. [En] (A:PS)
The causal agent of a severe leaf spot disease of mungbeans in Andhra
Pradesh was identified as Protomycopsis phaseoli Ramakr. and Subram. (IMI
258510). [THH]
*0424 Telan, I.F. ; Lapis, D.B. 1983. Chemical control of Cercospora leaf
spot of mungbean [Abst.j. PHILIPPINE PHYTOPATHOLOGY, v.19(1/2):9. [En]
(A:PS)
Bayleton 25% WP at concentration of 62.5, 125.0 and 187.5; Baycor at 90,
180 and 270 gram a.i./ha were evaluated against Cercospora leaf spot with
Benlate as standard chemical. The results showed that fungicide treatments at
different concentrations effectively controlled the disease. Disease severity
was effectively reduced and the number of pods and weights of harvested seeds
from chemically treated plots were considerably increased as compared to those
of the control. [AS]
*0425 Maroon, C.J.M. ; Opina, O.S. ; Molina, A.B.,Jr. 1984. Evaluation of
crude plant extracts as fungicides for the control of Cercospora leafspot of
mungbean [Vigna radiata (L.) Wilczek]. PHILIPPINE PHYTOPATHOLOGY,
v.20(1/2):27-38. [EnJ (En Abst] (A:PS)
Crude water extracts of 12 out of 43 plant species screened for their
fungicidal properties in vitro showed inhibitory activity against Cercospora
cruenta Sacc. the pathogen of Cercospora leafspoc of mungbean. The crude
extracts of cassava (Manihot esculenta Crantz), spiny amaranth (Amaranthus
spinosus L.), poinsettia (Euphorbia pulcherrima Willd.), ipil-ipil (Leucaena
leucocephala (Lam.) de Wit.) and alas cuatro (Mirabilis jalapa L.) applied
either as protectants or eradicants controlled the disease under screenhouse
conditions. Tagetes (Tagetes erecta L.) extract was effective as protective
spray while garlic (Allium sativum L.), mayana (Coleus scutellarioides L.),
comfrey (Symphytum officinale L.) and ginger (Zingiber officinale Roxb.)
extracts showed eradicative effects when applied after disease onset. Spiny
amaranth and ipil-ipil extracts significantly reduced the development of the
disease in the field but the former was more effective than the latter. Both
plant extracts, however, were inferior to benomyl in controlling the disease.
[AS]
*0426 Sud, V.K. ; Singh, B.M. 1984. Effect of sowing date and row spacing
on the d-;,4opment of leaf spot (Cercospora canescens) in urdbean. INDIAN
PHYTOPATHULOGY, v.37(2):288-293. [En] [En AbstJ (A:PS)
Leaf spot caused by Cercospora canescens developed rapidly in plots of
blackgram cv. Kulu-4 and HPU-6 with close row spacing (20 cm). Infection rates
and disease severities were higher in the early sown crop than in the later
sown crop. The early sown crop with close plant spacing (20 cm) developed more
disease than wide plant spacing (30 cm and 40 cm). The late sown crop, even at
wide spacing, produced more grain yield due to less disease than the early sown
crop at close plant spacing. [AS]
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