1. Response of cotton (Gossypium hirsutum L.) seeding the ultra-narrow grooves and high population density.
- Author
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MARTINEZ-LARA, Filiberto, CHINO-CANTOR, Araceli, MARTÍNEZ-SÁNCHEZ, Itzcóatl, and CIPRIANO-ANASTASIO, Juan
- Subjects
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COTTON , *LEAF area index , *PLANT spacing , *CROP growth , *PLANT biomass , *COTTON yields , *LEAF area , *COTTON fibers , *PLANT growth - Abstract
The cotton planting (Gossypium hirsutum L.) on narrow rows instead on conventional rows to 75 cm, show to be an alternative to increasing crop yield and to reduce production costs. The objective of this research was to study the effects of ultra-narrow rows and plant density on the biomass production and fiber quality. Three-row spacings and three plant densities were evaluated in the Comarca Lagunera, México. Ultra-narrow rows 50 and 35 cm, apart and conventional rows spaced to 75 cm, were used. The population densities were 80,000, 100,000 and 120,000 plants ha-1. The conventional variety Fiber max 98 was used. The nine treatments were assigned to a randomized complete block design with three replications in a split plot arrangement. Row spacings were assigned to main plots and the population densities to subplots. Seedcotton and lint yield were evaluated in kg ha-1, yield components (boll weight, lint percentage and seed index), fiber quality (length, resistance and fineness) and the plant growth indexes, leaf area index (LAI), net assimilation rate (NAR), crop growth rate (CGR), specific leaf area (SLA), leaf weight fraction (LWF) and leaf area ratio (LAR). Seed-cotton yield was different (P<0.01) to 75, 50 and 35 cm, row spacings, with 4,504, 5,377 and 6,259 (Kg ha-1 ), respectively. The highest yield was obtained in 35 cm, row spacing, which was higher 15 and 29% to the obtained on 50 and 75 cm, row spacings, respectively. The fiber quality was not affected by row spacings and plant density. Row spacing did not affected the plant growth indexes measured. The cotton production system on 35 cm rows with a plant density of 120,000 plants ha-1 can be an alternative to increasing yield and to reduce production costs, without yield reduction. Getting more profit for the producer. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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