Search results

Search:
in the keywords: Biopesticides

Sort By:

Limit search:

Agronomic evaluation and economic profitability of biopesticide derived a neem (Azadirachta indica A. Juss) seed in leafy onion and African eggplant production

100%

Zongo K. F., Dabire K., Sogoba K. H., Zongo S. F., Sanon A., Guebre D., Hien E.

World News of Natural Sciences

2023

vol. 48

14-27

Leafy onion and African eggplant are two profitable crops whose yields are negatively impacted by insect pests, vectors and diseases. This study was undertaken to compare the agronomic efficacy and economic profitability of neem seed extract to the conventional vegetable crop in Louda village. A randomised complete block design with three replications including one treatment of Neem seed grain powder aqueous extract (TB); treatment of chemical pesticide of industrial synthesis (TP); and control treatment, without any phytosanitary treatment (TA) was implemented with farmers. The results showed that neem seed extracts had comparable effects to chemical pesticides in pest control. Indeed, compared to the TA treatment, the TP and TB treatments significantly reduced the number of perforated plants of Leafy onion and African eggplant. The number of diseased plants of African eggplant was significantly reduced by -239% under TB treatment compared to TA. The best yields were recorded with the TB and TP treatments significantly increases of 33 and 44% on leafy onion and 57 and 56% on African eggplant respectively compared to the TA treatment. Economically, the results showed that gross margins from production and marketing of leafy onion under TB and TP were 63% and 17% higher respectively; net margins 91% and 76%; and average labour productivity 91% and 80% higher than under TA. These results show that the use of biopesticides in leafy onion and African eggplant crops was relatively equal to and many times more agronomically and economically effective than industrial pesticide treatment. Thus, better pest management by vegetable growers and the production of healthy produce can be achieved by adopting organic production and by training garden farmers in the manufacture and use of biopesticides.

Efficiency of botanical extract against maize weevil Sitophilus zeamais (Motschulsky, 1855) (Coleoptera: Curculionidae)

86%

Khanal S., Adhikari A., Tiwari A., Singh N. B., Subedi R.

World News of Natural Sciences

2019

vol. 24

1-8

With the objective of studying the efficiency of locally available botanical extract on maize weevil, a lab experiment was conducted from Feb 3 to Feb 20 2017, at the entomology lab of Gokuleshwor Agriculture and Animal Science College, Gokuleshwor, Baitadi. The design setup was that of a completely randomized design, with 10 treatments, each treatment was replicated thrice. Two varieties of maize local and a commercial hybrid were treated with five locally available botanical extracts, i.e. Acorous, Rittha, Neem, Asuro and wood ash to examine the efficiency of these on maize weevil. One kilogram of maize grains adjusted to 14% MC was placed in 20 cm high × 8 cm diameter plastic buckets. 10 gram of the powdered botanical pesticides of each of the test materials was then thoroughly mixed with the grains in each bucket. The mortality rate was recorded at 24 hours interval. Herein, Acorous showed the highest mortality rate in both local and hybrid varieties. The order of efficiency was found to Bhojo, Ritha, Ash, Neem and Asuro.

Refine search results

2 World News of Natural Sciences

1 2023

1 2019

1 Adhikari A.

1 Dabire K.

1 Guebre D.

1 Hien E.

1 Khanal S.

1 Sanon A.

1 Singh N. B.

1 Sogoba K. H.

1 Subedi R.

1 Tiwari A.

1 Zongo K. F.

1 Zongo S. F.

Search results

Agronomic evaluation and economic profitability of biopesticide derived a neem (Azadirachta indica A. Juss) seed in leafy onion and African eggplant production

Efficiency of botanical extract against maize weevil Sitophilus zeamais (Motschulsky, 1855) (Coleoptera: Curculionidae)