Effect of tillage and nutrient management on seed cotton yield, yield contributing characters and total uptake by cotton

N. S. WAGH, R. N. KATKAR, V. K. KHARCHE

Abstract


The field experiment was conducted at the Research farm, Department of Soil Science and
Agricultural Chemistry, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola to study the effect
of integrated nutrient management on soil quality and cotton productivity under different
tillage practices in vertisol. The treatments thus involved two main treatments and eight sub
treatments. The experiment main plot comprised of two treatments i.e. conservation tillage
(CNS) and CNV. In which one harrowing and two weeding and in conventional tillage (CNV)
one ploughing and one harrowing, two hoeing and two hand weeding operations were carried
out in eight sub plot treatments of nutrient management. The seed cotton yield was slightly
higher under conservation tillage as compared to conventional tillage. Highest seed cotton
yield was recorded in the treatment receiving 100 % RDF (60:30:30 NPK kg ha-1 (15.57 q ha-1)
followed by 50 % RDF + 50% N (FYM) (14.84 q ha-1).Significantly highest bolls per plant in
conservation tillage (19.95 bolls per plant) than in CNV (17.51 bolls per plant) while bolls per
plant was recorded in the treatment receiving 100 % RDF (60:30:30 NPK kg ha-1 (20.38 bolls
per plant) followed by 50% RDF + 50% N (FYM) (T3) (19.47 bolls per plant).Significantly
higher uptake of major and micronutrients was recorded under conservation over conventional
tillage. Significantly higher content of macronutrients viz., N, P, K, S and Mg were recorded
in the treatment receiving 100 % RDF (60:30:30 NPK kg ha-1) followed by 50 % RDF + 50 % N
(FYM). The total uptake of macronutrients at boll development stage was found to be
significantly higher in the treatment receiving 100 % RDF (60:30:30 NPK kg ha-1) followed by
50 % RDF + 50 % N (FYM). It was also noticed that the total uptake of nutrients increased
from square initiation to boll development stage as the age of the crop advances towards
maturity.


Keywords


Conservation tillage,Yield, Uptake, Nutrient management

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