Cotton CO17- A short duration, high yielding compact variety suitable for high density planting system

Abstract

The cotton compact variety CO 17 (culture TCH 1819) is a short duration genotype (125-130 days) with synchronized boll maturity suitable for high density planting system (HDPS) was released by Tamil Nadu Agricultural University, Coimbatore during 2020. This variety was developed at Department of Cotton, TNAU, Coimbatore through hybridization involving Khandwa 2 and LH 2220 followed by pedigree breeding. The variety possesses zero monopodia with short sympodial length and is highly suited for high density planting system. It recorded an average seed cotton yield of 2361 kg/ha which is 18.9% increase over the check variety Suraj (National check entry identified for HDPS). Culture TCH 1819 recorded seed cotton yield of 3427 kg/ha which was 21.7 % increase over Suraj and 29.0 % increase over MCU 7 under rice fallow condition. It recorded seed cotton yield of 2051 kg/ha which was 13.8 % increase over Suraj under summer irrigated conditions and also recorded 1604 kg/ha of seed cotton yield under winter rainfed which was 20.1 % increase over the check Suraj. This culture was also evaluated in All India Coordinated Cotton Improvement Project trials for two years during 2016-17 and 2017-18 across ten locations. It registered seed cotton yield of 1850 kg/ha which was 37.9 % increase over Suraj.TCH 1819 culture recorded Upper Half Mean Length (UHML) of 27 mm with bundle strength of 26.9 g/tex. It can spin upto 40’s counts.

Keywords

• cotton
• gossypium hirsutum l.
• compact plant type
• high density planting system (hdps)