Rice leaf folder attack reported in samba paddy in Tiruchi

With incidence of atom leafage folder pest onslaught being reported successful samba paddy harvest successful definite pockets of Tiruchi district, the Agriculture Department has advised farmers to initiate power measures to bounds damage.

The pest onslaught was noticed connected the harvest planted successful aboriginal October successful Musiri, Pullambadi, Tiruverumbur and different areas, officials said and attributed it to the intermittent rainfall and overcast conditions that prevailed during past 2 weeks. High humidity levels and excessive exertion of urea arsenic apical dressing could person besides contributed to the attack. Normally atom leafage folder incidence would beryllium seen successful paddy betwixt October and January.

Accordign to the officials, big moths of leafage folder are smaller successful size with dull yellowish brownish wings with acheronian wavy lines the centre and achromatic bands connected the helping margins. Larvae are airy greenish and translucent. Each big moth lays 150 to 200 eggs successful its beingness rhythm and they laic the eggs successful clusters of 15 to 20 nether the leafs. Eggs hatches successful 5 days and the larvae folds the leaves longitudinally and feeds connected the tissues of the leaves. This leaves agelong achromatic patches connected the leafs, which aboriginal withers. During terrible incidence the full tract bears a scorched look and the harvest maturation is stunted.

The economical threshold level (ETL) to commence power measurement for this pest is 10% leafage harm during progressive tillering signifier and 5 percent leafage harm during flowering signifier of the crop.

Botanical insecticides specified arsenic azadiractin and neem effect kernel effect extract spraying is recommended during the archetypal stages of infestation. Excessive usage of urea should beryllium avoided and exertion of urea with gyspum and neem barroom successful the ratio of 5:4:1 for apical dressing during the progressive tillering signifier is recommended. Foliar spraying of chlorantraniliprole, cartap hydrochloride oregon flubendiamide is effectual for the power of atom leafage folder, the officials said.