EVALUATION OF CYLINDER CLEANER GRID BAR CONFIGURATION AND CYLINDER SPEED FOR CLEANING OF SEED COTTON, LINT, AND LINT CLEANER WASTE

2003 ◽  
Vol 19 (1) ◽  
Author(s):  
D. P. Whitelock ◽  
W. S. Anthony
Keyword(s):  
Seed Cotton ◽  
Cotton Lint

Procedures for Moisture Analytical Tests Used in Cotton Ginning Research

2018 ◽  
Vol 61 (6) ◽  
pp. 1985-1995 ◽  
Author(s):  
Paul A. Funk ◽  
Albert A. Terrazas ◽  
Kathleen M. Yeater ◽  
Robert G. Hardin ◽  
Carlos B. Armijo ◽  
...  
Keyword(s):  
Moisture Content ◽  
Statistical Power ◽  
Random Order ◽  
Controlled Environment ◽  
Seed Cotton ◽  
Foreign Matter ◽  
Cotton Lint ◽  
Oven Drying ◽  
Cotton Sample ◽  
Air Freight

Abstract. Cotton post-harvest processing research requires moisture content determination for seed cotton, cottonseed, and lint. Methods for determining moisture content have changed and are no longer consistent between laboratories. This research compared standard procedures documented in 1972 and those currently practiced for finding moisture content by oven drying, and quantified the variability. Seed cotton from four modern cultivars (ranging from 9.4% to 36.8% foreign matter), lint, and cottonseed were brought from dry conditions, blended, and then stored for more than 30 days in a controlled environment (21°C, 65% RH) to reach uniform moisture content. Additionally, 150 seed cotton samples were placed in plastic zipper bags and sent by air freight to a distant location and back or stored on-site. Drying baskets (652 cm3) were loaded, in random order, with 25, 35, 50, 71, and 100 g seed cotton or 10, 14, 20, 28, and 40 g lint. Cottonseed was placed in 45 cm3 aluminum cups (10 g) or 800 cm3 aluminum baskets (50 g). Wet weights were determined in the controlled environment. After drying, replicated sets of seed cotton, lint, and cottonseed samples were weighed inside a drying oven and then outside the oven while still hot. Some samples were dried for twice the recommended duration. Sample location in the ovens was tracked. Weighing hot seed cotton samples outside the oven after drying increased apparent moisture content by approximately 0.5% due to air buoyancy; weighing lint samples outside the oven increased apparent moisture content by 1%. Smaller differences in apparent seed cotton moisture content were found when halving or doubling the amount of material in drying baskets or doubling the drying duration. Foreign matter had a minor influence on apparent moisture content. Storage for three days and shipping by air freight in plastic zipper bags did not measurably change the apparent moisture content of seed cotton. Sample location within the drying oven made no difference. Current practices are satisfactory if dry weight location is taken into consideration. Measurement uncertainty has decreased compared to 50 years ago, but the recommended minimum number of samples per treatment was increased slightly for greater statistical power. Keywords: Cotton lint, Cottonseed, Moisture content, Oven drying, Seed cotton.

scholarly journals Development of Prototype Double Roller Gin with Improved Power Transmission and its Performance Evaluation

2010 ◽  
Vol 5 (4) ◽  
pp. 155892501000500 ◽  
Author(s):  
Prashantkumar Gulabrao Patil ◽  
Vaishali Patil
Keyword(s):  
Power Transmission ◽  
High Volume ◽  
Transmission System ◽  
Oil Contamination ◽  
Seed Cotton ◽  
Oil And Grease ◽  
Cotton Lint ◽  
Power Transmission System ◽  
Commercial Size

Double roller gins are commonly used in India for ginning seed cotton. International Textile Manufacturers Federation's survey 2005 reported that degree of grease and oil contamination in cotton lint is serious in India1. Study revealed that the source of this contamination is the gearbox (power transmission system) of double roller gin as it is filled with grease/oil measuring about 20 kg. Prototype double roller gin has been designed and developed with new power transmission system which minimizes the use of oil and grease to a great extent. High Volume Instrument's results on fiber parameters indicated that quality of lint is at par with existing double roller gin with no prospect of oil and grease contamination. Developed machine is useful for cotton breeders, ginners, farmers to ascertain the ginning percentage and purity of seeds could be maintained. This prototype double roller gin could be the basis for design of modified double roller gin of a commercial size.

scholarly journals Comparing the Seed Cotton and Wheat Marketing Chains in Sindh

1998 ◽  
Vol 37 (1) ◽  
pp. 53-75 ◽  
Author(s):  
Hari Ram Lohano ◽  
Laurence E D Smith ◽  
Mike Stockbridge
Keyword(s):  
Transport Infrastructure ◽  
Seed Cotton ◽  
Cotton Lint ◽  
Domestic Prices ◽  
Marketing Systems ◽  
The Government ◽  
The Many ◽  
Marketing Chains ◽  
The Impact ◽  
Marketing Chain

This paper contrasts the operation of seed cotton and wheat marketing systems in Sindh. Analysis of marketing margins indicates that the private sector cotton marketing chain appears to be working efficiently, given the many adverse aspects of its socioeconomic environment. There is evidence that higher domestic prices resulting from alignment with world markets have been transmitted through the marketing chain to producers, and that production has increased. In contrast to cotton, the government continues to be heavily involved in wheat procurement and storage, with private traders usually acting as intermediaries between the Food Department and the grower. Despite expensive involvement of the same private traders as in cotton, the wheat market is characterised by bureaucratic failure and rent-seeking behaviour, leading to stagnation of incentives and production. For cotton, the primary recommendations are to sustain liberalisation of the market and to support the developing beneficial model of private competition through improvements in communications and transport infrastructure. The practical means to improve the grading of cotton lint and seed cotton should also be developed and promoted to provide incentives for higher quality output. For wheat, the main recommendations are to liberalise farmgate prices, reduce the state’s role in procurement, and privatise government godowns. Research is needed on how this might best be achieved, with attention to the conditions necessary for private financing of storage activities, and to ways of minimising price and supply fluctuations. The impact of higher flour prices on poor consumers also needs to be addressed

Factors influencing the Control of Cotton-Stainers (Dysdercus spp.)

1924 ◽  
Vol 15 (2) ◽  
pp. 171-171 ◽  
Author(s):  
C. L. Withycombe
Keyword(s):  
West Indies ◽  
The West ◽  
Cotton Lint ◽  
Factors Affecting ◽  
Factors Influencing ◽  
Cotton Stainers

Cotton-stainers, Dysdercus spp., are most important factors affecting the growing of cotton in the West Indies and elsewhere, on account of the fact that they convey certain bacteria and the spores of various internal boll fungi which cause staining and rotting of the cotton lint.

Soybean Response to Residual and In-Season Treatments of Trifloxysulfuron

2006 ◽  
Vol 20 (2) ◽  
pp. 384-388 ◽  
Author(s):  
Dunk Porterfield ◽  
Wesley J. Everman ◽  
John W. Wilcut
Keyword(s):  
Cotton Lint

Experiments were conducted from 1998 to 2000 at Rocky Mount, NC, in weed-free environments to determine soybean tolerance to preplant (PP) applications of trifloxysulfuron and the potential for trifloxysulfuron applied preemergence (PRE) and postemergence (POST) to cotton to injure soybean grown in rotation the following year. Trifloxysulfuron at 3.75 and 7.5 g ai/ha applied PP 2 wk before seeding injured conventional soybean less than 5%, whereas no injury was observed when seeding was delayed 4 or 6 wk after PP treatment. No injury to sulfonylurea-resistant soybean (SR) was observed for any treatment. Soybean yields were not influenced by trifloxysulfuron treatment. Cotton injury was 7% or less with trifloxysulfuron applied PRE or POST at 3.75 and 7.5 g/ha. Trifloxysulfuron at 15 g/ha PRE or POST injured cotton a maximum of 14 to 18%. Trifloxysulfuron did not reduce cotton lint yields regardless of method or rate of application. Both conventional and SR soybean were not injured nor were yields influenced by trifloxysulfuron applied PRE or POST the previous year to cotton.

Effects of Cultivation after Planting on Yields of Seed Cotton

1971 ◽  
Vol 17 (4) ◽  
pp. 484-485
Author(s):  
P. V. M. Richards ◽  
P. E. L. Thomas
Keyword(s):  
Seed Cotton

Cover Crops Suppression of Palmer Amaranth (Amaranthus palmeri) in Cotton

2017 ◽  
Vol 32 (1) ◽  
pp. 60-65 ◽  
Author(s):  
Matheus G. Palhano ◽  
Jason K. Norsworthy ◽  
Tom Barber
Keyword(s):  
Cover Crops ◽  
Cover Crop ◽  
Field Experiments ◽  
Palmer Amaranth ◽  
Cotton Yield ◽  
Cotton Production ◽  
Seed Cotton ◽  
Cereal Rye ◽  
Seed Cotton Yield ◽  
Weed Emergence

AbstractWith the recent confirmation of protoporphyrinogen oxidase (PPO)-resistant Palmer amaranth in the US South, concern is increasing about the sustainability of weed management in cotton production systems. Cover crops can help to alleviate this problem, as they can suppress weed emergence via allelochemicals and/or a physical residue barrier. Field experiments were conducted in 2014 and 2015 at the Arkansas Agricultural Research and Extension Center to evaluate various cover crops for suppressing weed emergence and protecting cotton yield. In both years, cereal rye and wheat had the highest biomass production, whereas the amount of biomass present in spring did not differ among the remaining cover crops. All cover crops initially diminished Palmer amaranth emergence. However, cereal rye provided the greatest suppression, with 83% less emergence than in no cover crop plots. Physical suppression of Palmer amaranth and other weeds with cereal residues is probably the greatest contributor to reducing weed emergence. Seed cotton yield in the legume and rapeseed cover crop plots were similar when compared with the no cover crop treatment. The seed cotton yield collected from cereal cover crop plots was lower than from other treatments due to decreased cotton stand.

Genetic progress in cotton lint and yield components in Argentina

2022 ◽  
Vol 275 ◽  
pp. 108322
Author(s):  
Gonzalo J. Scarpin ◽  
Pablo N. Dileo ◽  
H. Martin Winkler ◽  
Antonela E. Cereijo ◽  
Fernando G. Lorenzini ◽  
...  
Keyword(s):  
Yield Components ◽  
Genetic Progress ◽  
Cotton Lint

Microwave carbonization of cotton fiber for the production of carbon materials

2021 ◽  
Vol 11 ◽  
pp. 54-68
Author(s):  
E. V. Matveev ◽  
◽  
A. I. Gajdar ◽  
B. A. Lapshinov ◽  
A. V. Mamontov ◽  
...  
Keyword(s):  
Adsorption Capacity ◽  
Fiber Surface ◽  
Thermal Method ◽  
Surface Layers ◽  
Cotton Lint ◽  
Microwave Exposure ◽  
Carbonization Process ◽  
Fiber Wall ◽  
Physico Chemical ◽  
Transverse Fractures

This article presents the results of comparative studies of the structural and physico-chemical features of cotton lint samples carbonized by the microwave method and the standard (thermal) method. The dependences of the temperature change of the samples during the microwave carbonization process are obtained. The heterogeneity of the morphology of the fiber surface along the cross-section of the microwave carbonized sample was revealed. It is shown that the structure of the surface layers is characterized by two mechanisms of fiber destruction: numerous brittle transverse fractures and coloring of the fibers in places of swellings (a sharp increase in their diameter) and fluffing of the surface into convoluted fibrils with a transverse size of 50 – 300 nm due to the destruction of the outer layers of the secondary fiber wall. In the central region, the destruction of fibers occurs by the formation of longitudinal interfibrillary slits and the delamination of the secondary fiber wall, which leads to the formation of pores with dimensions of 50 – 200 nm. It is established that during the microwave carbonization process, the central part of the sample is almost completely freed from impurities that are deposited on the fibers of the surface layers. It is shown that the integral adsorption capacity of the microwave carbonized sample is higher than the adsorption capacity of the sample carbonized by the thermal method (126 mg/g and 47 mg/g, respectively). It was found that during microwave exposure more than 10 minutes, regions with an adsorption capacity of ~ 350 – 450 mg/g appear in the carbonized material, that is comparable to the capacity of samples activated by the standard method.

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