EurekaMag.com logo
+ Site Statistics
References:
47,893,527
Abstracts:
28,296,643
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

The optimal cotton field density


, : The optimal cotton field density. Rasteniev"dni Nauki 18(7): 77-85

During the 1978-1980 period, various densities, i.e., 100,000, 130,000, 160,000, 190,000, 220,000, 250,000, 280,000, 300,000 and 330,000 plants/ha, were tested in field and production trials. The trials were carried out without irrigation, at 80-cm interrow spacing, with application of mineral fertilizers N100P80 and with cv. no. 433. Along with the reduction in nutrient area per plant, plant height and bush width, number of sympodia and monopodia, number of bolls per plant and mean boll weight decreased. Number of infertile plants, number of bolls harvested per unit area and height of 1st sympodium formation increased. Along with raising the plant density up to 190,000 plants/ha, cotton earliness expressed by the Sept. picking increased by 12.9%. Further increase in plant density up to 330,000 plants/ha also raised the quantity of the Sept. picking by 6.6-7.8%. The greater number of plants up to 160,000-190,000 raised total yield by 5.3%, while above that density, up to 280,000, it did not lead to higher yield than that produced by 100,000-130,000 plants/ha. The all-around evaluation of cotton earliness, yield and quality, as well as the extent of harvest mechanization, indicated that the optimal number of plants per ha is 160,000-190,000.


Accession: 006728565

Submit PDF Full Text: Here


Submit PDF Full Text

No spam - Every submission is manually reviewed

Due to poor quality, we do not accept files from Researchgate

Submitted PDF Full Texts will always be free for everyone
(We only charge for PDFs that we need to acquire)

Select a PDF file:
Close
Close

Related references

Nikolov, G., 1981: Optimal cotton field density.. Rastenievudni nauki = Plant science8(7): 77-85

Anwar U.H.q ; Shaukat, S.S.; Afzal, M., 1981: Cotton yield and weed density and diversity in response to pre-emergence application of herbicides in cotton field. Application of 2 kg prometyne/ha increased seed cotton yields, boll dry wt. and boll yield of cotton cv. BS1 but 4 kg prometryne/ha reduced yields. Fluometuron had no effect on cotton yield.

Haq A.U.; Shaukat S.S.; Afzal M., 1981: Cotton gossypium hirsutum cultivar bs 1 yield and weed density and diversity in response to preemergence application of herbicides in cotton field. Weed density and diversity were measured at various periods of the growth of a cotton crop following preemergence application of 2 and 4 kg/ha prometryne and fluometuron. Application of 2 kg/ha prometryne resulted in decreased weed density (the mo...

Nikolov G., 1985: Optimal density of early garant type cotton cultivars. Plant densities of 10, 40, 70, 100, 130, 160, 190, 220, 250, 280 and 310 thousand plants per ha spaced 60 m between rows were tested in 1980-1983 in field trials with and without irrigation. The earliest cultivar of Garant type Bulgarian cotton br...

Nikolov, G., 1985: Optimal planting density for early Garant-type cotton cultivars. Cotton was grown at densities of 10 000-310 000 plants/ha at 60 cm interrow spacings in 1980-83 with or without irrigation. Increasing densities from 40 000 to 310 000 plants/ha reduced the area of nutrient uptake from 2420 to 325 cmsuperscript 2/...

Ren, X.; Zhang, L.; Du, M.; Evers, J.B.; van der Werf, W.; Tian, X.; Li, Z., 2013: Managing mepiquat chloride and plant density for optimal yield and quality of cotton. The growth regulator mepiquat chloride (MC) is used in cotton production across the globe to control plant growth and maximize yield and quality of cotton. With the conversion from hand picking to mechanical harvesting in China, plant densities ar...

Schaffer, G., 1976: Guide to the management of a field test on the determinaton of the optimal time for irrigation (optimal irrigation interval), optimal water distribution and optimal mineral fertilization, with a goal of optimal harvest yield (3 factorial test design). Zeitschrift fur Bewasserungswirtschaft: 11 (1) 59-65

Schuster, W.R.utzel, W., 1975: Tests for the optimal stand density for oats and field beans

Moon Y.B., 1981: Optimal density of initial inoculation of rotifer and optimal density of chlorella for sustainable daily harvest of rotifer. To obtain a daily supply of rotifers for feeding juvenile fish and/or larval crustaceans, such as shrimp, in seedling culture, the maximum daily increase using the food organism, Chlorella sp., was investigated in an experimental culture unit. The...

Focardi, S.; Marcellini, P.; Montanaro, P., 1996: Do ungulates exhibit a food density threshold? A field study of optimal foraging and movement patterns. 1. The behaviour of ungulates foraging in non-patchy habitats is studied with the help of a new model of optimal foraging based on a time minimization utility function. The model predicts that an animal uses a foraging station only if the biomass...