Harvesting Three A Year Times in the Field in the Climatic Conditions of the Southern Part of Uzbekistan

According to the scientific article, the number of farms and homestead plots per year:-as the first main crop, the second intermediate crop, and the third secondary crop, the types of crops grown in one place and their varieties, the correct placement of their predecessors, the sequence of planting methods and terms, the yield are recorded under the climatic conditions of Surkhandarya province, located in the southern zone of Uzbekistan. The studied data on the creation and importance of the convenience of growing them in a modern way are given based on the biology of the crop species

Influence of the Multiplicity of Varietal Cleaning on the Quality of Sunflower Seeds at Different Plant Density

In thearticleis shown the influence to sorts quality of seeds grown in primary nursery for the production of elite seeds of sunflower with the density of 20,4 thousand, 23,8 thousand, 28,6 thousand, 35,7 thousand and sorts cleanness one time before blossoming, one time in mass blossoming, two times in riping period, one time before harvesting totally five times

Productivity Of Early Varieties Of Sunflowers Sown At Different Times In Irrigated Conditions Of Uzbekistan

This article provides information on the growth and yield of varieties of sunflower grown in irrigated conditions of Uzbekistan - March 10, March 20, March 30, April 10 and April 20, the growing season is 80-85 days, 90-95 and 100-105 days. . Grasses formed from seeds sown in a very early period (March 1 and 10) are susceptible to fungal diseases in the early days of spring under the influence of excess moisture and low temperatures, and the bush numbers are reduced by 1.5–3.2%. Yield is less than 4.3–5.4 ts / ha. As the sowing period is delayed until April 20, during the flowering and ripening phases of sunflower, under the negative influence of high temperatures, the yield is reduced to 0.3-0.7 ts / ha and the oil content in the seeds to 0.3-0.6%. 31-33 ts / ha of early ripening varieties of sunflower grown as the main crop in Samarkand region. and 34.0-35 ts / ha.cha from early middle-aged varieties. It is advisable to sow in the period from March 30 to April 10 to achieve quality yield