Published in Scientific Papers. Series A. Agronomy, Vol. LXVII, Issue 1
Written by Minka KOLEVA, Neli VALKOVA, Spasimira NEDYALKOVA
Productivity and technological fiber properties of three new cotton varieties - Kristal, Orfey and Snejina, created by intraspecific (G. hirsutim L.) hybridization and included in varietal trials carried out at the Field Crops Institute in Chirpan, were studied. The three varieties, in seed cotton yield, on average over a three-year period, exceeded the standard cultivar Chirpan-539 by 9.1%, 12.8% and 23.0%, respectively. These varieties combined higher productivity with higher lint percentage, greater boll weight in Orfey and Snejina and higher 1st fruit branch in Kristal and Orfey. In the State Variety Test, Kristal variety in seed cotton yield was equal to the cultivar Chirpan-539, surpassed the cultivar Avangard-264 by 6.4%, and in lint yield exceeded both standards, respectively by 2.3% and 13.3%. Orfey variety in seed cotton yield and lint yield was equal to the standard cultivars. Snejina variety in seed cotton yield of 2155 kg.ha-1 and in lint yield of 876 kg.ha-1 exceeded both standards, Chirpan-539 by 3.5% and 3.2% respectively, Avangard-264 - by 6.1% and 4.4%. All three varieties had good fiber quality.
[Read full article] [Citation]
