Detail:

To prevent insects while storing gram (Cicer arietimum) and green gram (Vigna radiata), at the time of filling the barn, chaste tree (Vitex negundo) leaves are put into the storage area. Apart from this, if the grain is stored for a longer period, worms also infest the grains and damage them. To prevent this, gram and red gram (Cajanus cajan), which is being stored, are coated with cows urine and dried in shade and then stored in the barn. The bottom of the barn is filled with chaste tree seeds and leaves. After filling the barn with grains, the chaste tree seeds and leaves are again filled at the topmost layer. This is a traditional method learnt from forefathers. The practice is in use for the last 30 to 35 year.

Knowledge Provider / Innovator: Lakhmanbhai Bhagwanbhai Pagi
Agro-Ecological Zone: North West Zone (GJ-5)North Saurashtra (GJ-6)
Address: Mu. Khara, Godha, Patdi, Surendranagar
District: Surendranagar
State: Gujarat
PIN Code 382760

Formulation: Chaste tree (Vitex negundo) leaves
Ingredients: Chaste tree (Vitex negundo) leaves and seeds

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PAS 1:

"The insecticidal property of dry leaves of Vitex negundo against the Sitophilus granarius in the laboratory at (28±3) 0C and (78±3) % r. h. with Soxhlet extracted extracts of V. negundo leaves in ethanol, methanol, chloroform, acetone and n-Hexane were tested and found very effective to control the store grain insect pest. The biopesticidal effects of extracts in different solvents were compared by calculating LD10, LD50, LD90 and LD99 values for 96 hrs. The Probit analysis of data demonstrated that LD values for ethanol, methanol, chloroform, acetone and n-Hexane extracts were LD10 – 1.216, 1.141, 0.9298, 1.265, 0.5398 ml/Kg; LD50 – 2.997, 3.106, 2.490, 3.727, 1.302 ml/Kg; LD90 – 7.392, 8.457, 6.667, 10.98, 3.142 ml/Kg and LD99 –15.43, 19.14, 14.88, 26.50, 6.439 ml/Kg respectively, for 96 hrs." [Nilesh Jawalkar, Sureshchandra Zambare. Bioinsecticidal activity of Vitex negundo L. (
Family: Verbenaceae) leaf extracts against Sitophilus granarius L. in stored maize grains. J Entomol Zool Stud 2020;8(2):1532-1538.
DOI: 10.22271/j.ento.2020.v8.i2z.6643]
https://www.entomoljournal.com/archives/?year=2020&vol=8&issue=2&ArticleId=6643

PAS 2:

"The insecticidal property of dry leaves of Vitex negundo against the Sitophilus granarius in the laboratory at (28±3) 0C and (78±3) % r. h. with Soxhlet extracted extracts of V. negundo leaves in ethanol, methanol, chloroform, acetone and n-Hexane were tested and found very effective to control the store grain insect pest. The biopesticidal effects of extracts in different solvents were compared by calculating LD10, LD50, LD90 and LD99 values for 96 hrs. The Probit analysis of data demonstrated that LD values for ethanol, methanol, chloroform, acetone and n-Hexane extracts were LD10 – 1.216, 1.141, 0.9298, 1.265, 0.5398 ml/Kg; LD50 – 2.997, 3.106, 2.490, 3.727, 1.302 ml/Kg; LD90 – 7.392, 8.457, 6.667, 10.98, 3.142 ml/Kg and LD99 –15.43, 19.14, 14.88, 26.50, 6.439 ml/Kg respectively, for 96 hrs." [Nilesh Jawalkar, Sureshchandra Zambare. Bioinsecticidal activity of Vitex negundo L. (
Family: Verbenaceae) leaf extracts against Sitophilus granarius L. in stored maize grains. J Entomol Zool Stud 2020;8(2):1532-1538.
DOI: 10.22271/j.ento.2020.v8.i2z.6643]
https://www.entomoljournal.com/archives/?year=2020&vol=8&issue=2&ArticleId=6643