PNABD246.pdf

incubator at 25 [plus or minus] 2 C. The number of cowpea weevils
(Callosobruchus chinensis L.) per bag, no. of riddled seeds per 100 seeds, and
no. of eggs of the weevil per 30 seeds in the irradiated bags were
significantly less than those in the untreated ones. The cooking quality and
mungbean sprouts produced from the beans treated at 100 Gy were not different
from the untreated. [AS]
*0796 Sujatha, A. ; Punnaiah, K.C. 1985. Effect of coating stored seed of
greengram with vegetable oils on the development of pulse beetle. INDIAN
JOURNAL OF AGRICULTURAL SCIENCES, v.55(7):475-477. [En] [En Abst]
(REP.MB-2888)
Stored seed of mungbean [Vigna radiata (Linn.) Wilczek] could be
effectively protected from the pulse beetle, Callosobruchus chinensis (Linn.),
when the seed was treated with 0.25% coaicentration of the oils of sesamum
(Sesamum indicum Linn.), capol (cottonseed oil), oilpalm (Elaeis guineensis
Jacq.) and neem (Azadirachta indica A. Juss.). When the oils of groundnut
(Arachis hypogaea Linn.) and coconut (Cocos nucifera Linn.) were used, the
effective concentration was found to be 0.5%. All the oils recorded lesser
infestation at 0.125% than the control. The groundnut or coconut oil at 0.5%
and gingelly sesamum, capol, oilpalm or neem oil at 0.25% were found to be
effective in protecting the mungbean against the pulse beetle. [AS]
*0797 Chandrakantha, J. ; Mathavan, S. 1986. Changes in developmental rates
and biomass energy in Callosobruchus maculatus (F.) (Coleoptera: Bruchidae)
reared on different foods and temperatures. JOURNAL OF STORED PRODUCTS
RESEARCH, v.22(2):71-75. [EnJ [En Abstj (REP.MB-2860)
The developmental rates and corresponding changes in the biomass of life
stages of Callosobruchus maculatus were studied as functions of food type and
temperature. The growth rate of C. maculatus was faster when reared on stored
seeds of Vigna unguiculata (cowpea) followed by V. radiata (mungbean) and
Dolichos lablab (lablab bean). Larval periods were longer when C. maculatus was
reared on D. lablab than when reared on V. radiata and V. unguiculata. Survival
and the growth iesponse of C. maculatus were observed at 20-35 C and were the
greatest at 30 C and the least at 35 C. Cowpea, V. unguiculata, and
environmental temperature of 30 C appear to be the optimal factors of those
studied for the build up of C. maculatus populations. [AS]
*0798 Slamet, M. ; Sosromarsono, S. ; Wardojo, S. ; Koswara, J. 1986.
Biology of the southern covpea weevil Callosobruchus chlnensis
(Coleoptera:
(L),
Bruchidae) on mungbean. AGRIKAM: BULETIN PENELITIAN
MAROS
PERTANIAN
(MAROS AGRICULTURAL RESEARCH BULLETIN), v.1(1):22-26. [In] [En] [En
Abstj (REP.MB-2839)
The biology of Callosobruchus chinensis was studied using the mungbean
cultivar Bhakti. The temperature during the study ranged from 24.6 to 30.8 C
and the relative humidity from 67.8 to 82.6%. The results showed that a pair
laid an average of 73.2 eggs, with a maximum of 142 eggs. The eggs'
hatchability was 86.5% and the mortality of larvae, pupae and adults in the
seed was less than 3% each. The life cycle of C. chinensis ranged from 21 to 31
days with an average of 22.9 days. The duration of egg, larvae, pupae and imago
in seed was 4.5, 12.2, 5.9, and 4.9 days, respectively. Lifespan of mated
210