He said that boll
picked by the machine are exposed before sunlight to kill pink boll
-worm and larvae inside them.
Data on DCB seasonal incidence at weekly intervals was recorded from the five selected cotton plants; at the bottom, middle and top bolls
of unsprayed Bt and non-Bt varieties.
2] (12x15m) that was historically infested by cotton boll
Table 1: Effect of different Farmyard manure levels on Boll
weight with respect to different tillage technologies.
1995) and male sterility which cause more flower and boll
shedding (Fisher, 1975).
As the cotton gin was to removing seeds from the locks of cotton around 1800, so was the mechanical picker to the gathering of the valuable bolls
from the stalks.
01) for plant height, sympodial branches plant-1, bolls
weight, lint index and yield of seedcotton plant-1 and fiber strength.
Varieties of BT cotton are resistant against the attack of boll
formation stage has severely affected under CLCuD incidence.
Although population outbreaks of boll
weevil would be associated with agricultural expansion in the tropics, boll
weevil naturally occurs in South America since before the extensive cultivation of cotton in the region, their presence has been ignored until 1949, due to the scarce weevil collecting, especially in the native areas (Scataglini et al.
The observations were recorded for number of bolls
/plant, sympodial branches/plant, boll
weight (g), plant height (cm), fibre length (mm), seed cotton yield/plant (g), seed index (100 seeds weight, g), ginning outturn percentage (GOT %)/ lint %.
2005) conducted an experiment regarding the effect of sowing dates on the population of boll
weevils, they concluded that squares damage of boll
weevils were 44-56% more abundant in later planted treatments than in the earlier planted treatments.