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Xinluzhong 73
This is a glyphosate-tolerant, bollworm-resistant, high temperature-tolerant,
high-yield and high-quality conventional cotton variety.
Main Characteristics and Traits
Agronomic traits
The growth period is about 122-123 days. The plant is tower-shaped with Type II fruiting branches. The node of the first fruiting branch is 6.2. It has a stiff stem, dark green leaves,duck-foot-shaped medium-sized leaves and sparse stem pubescence.The variety shows strong seedling vigor and steady growth during flowering and boll-setting stage.Fruiting branches are upright, with a tidy plant type and good ventilation and light penetration.
Yield traits
Average single boll weight is about 7.0-7.8g, saw-gin lint percentage is 44.8%.
It has strong and concentrated boll-setting ability, with large, white and well-retained lint.
Fiber Quality Traits
Fiber length: 31.5mm Breaking strength: 32.7 cN/tex Micronaire value: 4.5
Stress Resistance
Good low temperature tolerance at seedling stage; drought tolerance and high temperature resistance;
lodging resistance; bollworm resistance; glyphosate tolerance;
Fusarium wilt resistance and Verticillium wilt tolerance.
Key Cultivation and Management Measures
● Sowing Date: Sow when the soil temperature at 5cm depth remains steadiy above 12°C for 3 consecutive days Seding density, 210,000-225,000 plants/ha Harvest densiy;approx. 180 000- 195,000 plants/ha
● Fertilization: Apply sufficient basal fertilizer dominated by organic fertilizer. Topdress with a combination of potassium fulvate, bio-fertilizer and N-P-K compound fertilizer.Apply light seedling fertilizer, stable bud fertilizer and heavy flowering&boll-setting fertilizer.Increase phosphorus and potassium application after full flowering.Foliar fertilizers are mainly zinc fertilizer,boron fertilizer and potassium dihydrogen phosphate.Total fertilizer input is determined by target yield and applied in coordination
● Irrigation: For drip-irrigated cotton fields,drip irrigated is applied once every 7-10 days based on soil moisture conditions, with a water aplication volume of 300-525m³ per hectare per irrigation event.The irrigation interval shall be shorteneed during high-temperature periods.
● Chemical Regulation: implement full-season chemical regulation by combining early,frequent and light applications.Adjust the dosage accordingf to cotton seeding growth
● Pest and Disease Control: Attach importance to pest and disease contorl,adhering to the principle of prevention frist and integrated management
● Topping: Follow the principle When time comes, top regardless of branches when branchese are sufficient,top regardless of time.For machine-picked cotton fields with high density,control plant height at about 70-80cm,For the planting patterm of one mulch film with three rows,plant height of 100-200cm is suitable
● Defoliation:This variety is sensitive to defoliants. For machine-picked cotton fields, flexibly adjust the applicaation time and dosager of defoliants according to field density,crop growth and air temperature.