Effect of soil application and foliar spray of fertilizers on growth, yield and quality of Bt-cotton and non- Bt-cotton (Gossypium hirsutum L.)
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Date
2017
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CCSHAU
Abstract
A field experiment entitled, “Effect of soil application and foliar spray of fertilizers on growth,
yield and quality of Bt-cotton and non Bt-cotton (Gossypium hirsutum L.)” was conducted at Cotton
Research Station Farm, Sirsa, CCS Haryana Agricultural University, Hisar during Kharif 2013 and
2014. There were 16 treatments having two basal application of RDF at 75 and 100% with foliar
application of water, urea (2.5%), DAP (2.0%), KNO3 (2.0%), NPK (19:19:19) (2.0%), urea (2.5%) +
ZnSO4 (0.5%), urea (2.5%) + DAP (2.0%) + NPK (19:19:19) (2.0%) were applied at flower initiation
stage, boll formation stage and boll development stages, of both Bt-cotton and non Bt-cotton
experiments separately with three replications.
Soil applied 100% RDF + foliar applied urea (2.5%) & ZnSO4 (0.5%) (T15) produced
significantly higher growth parameters viz. plant height, leaf, stem and total dry weight, and sympodial
branches per plant (176.9 & 154.8 cm, 106.5 & 74.6, 417.9 & 307.3, 741.1 & 553.0 g plant-1 and 16 &
14 in Bt-cotton, and 157.9 & 153.2 cm, 61.4 & 57, 183.3 & 118.3, 273.2 & 260.9 g plant-1 and 14 & 12
in non Bt-cotton during 2013 and 2014, respectively) but was at par with 100% RDF along with foliar
applied NPK (19:19:19) and with KNO3 (2.0%). Application of 100% RDF + foliar applied of NPK
(19:19:19) (2.0%) recorded considerably higher yield parameters viz. number of opened bolls and total
number of bolls per plant (46 & 39 and 46 & 40 in Bt-cotton, and 27 & 26 and 28 & 26 in non Btcotton
during 2013 and 2014, respectively) and seed cotton yield (155.8 & 142.6 g plant and 3462 &
3168 kg ha-1 in Bt-cotton, and 59.4 & 57.9 g plant and 2641 & 2521 kg ha-1 in non Bt-cotton during
2013 and 2014, respectively) as compared to other treatments but it was statistically at par with 100%
RDF + foliar applied KNO3 plots. Similarly, the same superior treatment recorded significantly higher
net returns (`56074 & `42993 ha-1 in Bt-cotton, and `28958 & `22160 ha-1 in non Bt-cotton, in the
respective crop seasons) and B:C (1.61 & 1.47 in Bt-cotton and 1.34 & 1.26 in non Bt-cotton, during
2013 and 2014, respectively) as compared to other treatments. Soil applied 100% RDF + foliar applied
of NPK (19:19:19) (2.0%) resulted significantly higher ginning out turn and 2.5% span length (34.8 &
34.2 and 33.2 & 31.3 in Bt-cotton, and 41.8 & 39.7 and 26.3 & 24.8 in non Bt-cotton during 2013 and
2014, respectively) than other treatments. N, P and K uptake of 220.7 & 179.1, 53.2 & 44.5 and 140.7
& 126.5 kg ha-1 in Bt-cotton, and 128.2 & 137.3, 35.6 & 36.3 and 100.2 & 127.4 kg ha-1 in non Btcotton
were also significantly higher with 100% RDF + foliar applied of NPK (19:19:19) plots.
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