The effect of soil treatment methods against dodder (Cuscuta sp.) in soybean cultivating field

¹ Tashkent State Agrarian University, Tashkent, 100140, Uzbekistan
² Osh State University, Osh, 723500, Kyrgyzstan

^* Corresponding author: ahmurzaev76@mail.ru

Abstract

In the paper, it was described the effectiveness of different tillage methods against dodder in soybean field. In the conditions of typical sierozem and sierozem-meadow soils, it was determined that the fight against the dodder gave good results when the soil was plowed with a two- tier plug at a depth of 0-40 cm in the 1st year, 0-24 in the 2nd year, and 0- 32 cm in the 3rd year. In this case, it was observed that the spread of dodder was reduced by 45.3-50.2 % compared to the control in proportion to the soil types, and the efficiency was 95.2-94.7 %. Organic amendments improved soil health parameters but were less effective in controlling dodder, achieving only a 50% reduction. Mechanical tillage was the least effective, with a 30% reduction in dodder density. Soybean yield was highest in chemically treated plots, followed by solarized plots, with organic amendments and mechanical tillage showing marginal yield improvements over the control.