Abstract
Nitrogen plays a significant role to improve the growth and yield of cotton. Plant growth,
assimilation, morpho-physiological expressions and photosynthate translocation are closely related to
nutrients availability. A field trial to evaluate the response of different nitrogen splits on growth and
yield components of cotton was conducted under the agro climatic conditions of Dera Ghazi Khan,
Pakistan during 2012. Fuzzy seed (@ 20 kg ha-1 of cotton genotype (BT-MNH 886) was sown under
Randomized Complete Block Design (RCBD) with three replications. Fixed nitrogen (N) dose (375
kg ha-1) which (375 kg ha-1), was applied in four treatments as a source of nitrogen; T1=5 N splits
(@75.00 kg ha-1 per split), T2=6 N splits (@62.50 kg ha-1 per split), T3=7 N splits (@53.57.00 kg ha-1
per split), and T4=8 N splits (@46.87 kg ha-1 per split). The data were recorded on the basis of yield
and yield attributes of cotton crop that included plant height, leaf area index (LAI), number of bolls
per plant, bolls weight and seed cotton yield. On increasing N splits, vegetative characteristic of
cotton i.e., plant height was improved while, features like leaf area index, bolls weight and seed cotton
yield increased up to certain level of N splits, T3 (7 splits). Further, N split (8 splits in T4) caused
decrease in all these features except for plant height. So the growth and yield performance of cotton
genotype (BT-886) was significantly influenced up to 7 splits of nitrogen fertilizer, improving
morphological characteristics of cotton crop ultimately enhancing the seed cotton yield.
Shuaib Kaleem, M. Shabbir, M. N. Abbas. (2015) MORPHOLOGICAL CHARACTERS IN BT COTTON AS INFLUENCED BY THE SPLIT APPLICATION OF NITROGEN APPLIED AT DIFFERENT GROWTH STAGES UNDER THE AGRO-CLIMATIC CONDITION OF DERA GHAZI KHAN, PAKISTAN, Asian Journal of Agriculture and Biology, Volume 3, Issue 2.
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