The advanced cultures viz., TR2003-025, TR-204-008, TR2004-08, TR200-003, V-43-10,V-80, F6-001, B2, CSTVT-34 and V-1P were free from white ear damage and found to be resistance.

 

The accessions viz., M-6-4 and TR2003-082 recorded the lowest leaf folder damage of 7.04 and 13.28 % respectively, while the check variety TRY1 recorded 16.88% damage.

 

The pre-release culture,TR2001-003 registered the lowest mite damage (9.85%) against the check TRY1 (20..35%) and BPT (25.15%).

 

Spraying of monocrotophos 0.05% or malathion 0.05% at milky stage and early harvest at physiological maturity significantly reduced the carry over of the Angoumois gain moth Sitotroga

cerealella and these treatments recorded less grain damage, weight loss and moth population.

 

Surface treatments of gunny bags with malathion 0.5% significantly reduced the incidence of Sitotroga.

 

Spraying of Metoministrobin (Met 20) @ 1 ml/ lit. recorded the least mean severity of rice blast (21.7%), brown spot (31.7%),sheath blight (19.1%) and grain discolouration (18.0%)

coupled with highest grain yield (4390 kg/ha) where as the untreated control registered the highest severity of blast (46.1%), brown spot (62.3%), sheathblight (46.1%) and grain

discolouration (37.2%) with lowest grain yield 3250 kg/ha).

 

In a pot culture study, determination of biochemical constituents (total free amino acids, pyruvic acid and total phenol),specific activity of amylase and biometric observations showed that the rice

variety TRY2 with ESP level of 28 performed well compared to salt susceptible variety ADT43.

 

Promising salt tolerant cultures TR2005-041 and 025 have been developed with medium slender grain quality.

 

RESEARCH

Text Box: ANBIL DHARMALINGAM 
AGRICULTURAL COLLEGE AND RESEARCH INSTITUTE
TRICHIRAPALLI 620 009