EFFECTIVE METHODS OF CARE FOR SUNFLOWER CROPS

Аннотация

Sunflower cultivation is relevant in the climatic conditions of Western Kazakhstan, characterized by
high heat supply and a long growing season. In order to obtain a high yield of sunflower in the system of adaptive
technologies, proper pre-sowing preparation of the soil and optimal sowing times are important. Weeds cause great
damage to the sunflower crop. Having a powerful underground and aboveground mass, sunflower competes with
weeds better than many other field crops. As the accounting data showed, in our studies of 2018-2020, the greatest
contamination of sunflower crops was in the variants without the use of herbicides. So, on average for 3 years
in the phase 2 of real leaves, when using the harrowing + pre-sowing cultivation (control) technology, there were
10.67 weeds per 1 m2
with a raw mass of 31.22 g/m2
. According to research data, on average for 2018-2020, the
highest oil harvest is set for the harrowing + pre-sowing cultivation option with roundup (2 l/ha) – 9.57 с/ha. When
using 1 and 2 inter-row treatments combined with harrowing and pre-sowing cultivation, the oil harvest increased to
7.16-7.95 с/ha, which is more than the control by 0.92-1.71 с/ha.