International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 4
First page : (980) Last page : (993)
Article doi: http://dx.doi.org/10.18782/2320-7051.4016
Simulating Date of Sowing in Maize (Zea mays L.) Under Irrigated Conditions Using CERES-Maize Model
Gurdeep Singh, B. A. Lone*, Zahoor Ahmad Dar, Purshotam Singh, Asma Fayaz, Sandeep Kumar, Sameera Qayoom and K. N. Singh
Division of Agronomy, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir (SKUAST), Kashmir, India
*Corresponding Author E-mail: alonebilal127@gmail.com
Received: 11.06.2017 | Revised: 20.06.2017 | Accepted: 22.06.2017
ABSTRACT
Field experiments was conducted at Shalimar Campus of Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir during 2012 and 2013 under irrigated conditions with the objective to study the growth and yield of maize at different planting dates and planting density and to simulate trends of maize production. Experiment was laid in split-plot design assigning four planting dates 15th April (D1), 30th April (D2), 15th May (D3) and 30th May (D4) to main plots and three planting density 50cm×20cm (S1), 60cm×20cm (S2) and 70cm×20cm (S3) to sub-plots. Genetic coefficients of maize variety C6 were verified/generated for calibration and validation of model CERES-Maize (DSSAT v 4.5). The planting date 15th April (D1) produced highest yield of 50.60 and 53.81 q ha-1 under irrigated conditions during 2012 and 2013, respectively. Growth characters like LAI, dry matter and yield attributes like cob length, grains per cob, harvest index and nutrient uptake was recorded highest with planting date 15th April (D1) which had longer vegetative phase than late planting dates. Among planting density 60cm×20cm (S2) recorded highest grain yield of 42.32 and 44.72 q ha-1 under irrigated conditions during 2012 and 2013, respectively. Growth and yield attributing characters also recorded highest value with planting density 60cm×20cm (S2). The simulation studies on growth and yield due to varied growth parameters under irrigated conditions were carried out by using soil and experimental data. The CERES-Maize simulation model was calibrated using field data and validated with anthesis, maturity, grain, biological yield and LAI.
Simulated studies indicated that early sowing i.e 15th April (D1) predicted highest grain yield during all the years from 1986-2013. Under irrigated conditions increasing levels of N predicted increased grain and stover yield from N levels up to 90 kg N ha-1. Under irrigated and mulched conditions increased level of N predicted increase in maize grain and stover yield upto 120 kg N ha-1. Maize yield was also simulated at different sowing dates and in combination with variable spacings and it was predicted that under irrigated condition closer spacing 40cm×20cm at 15th April sowing recorded highest grain and stover yield of maize. Soil water balance under simulation studies indicated that potential ET was recorded comparatively higher with early sowing date than late sowing date under irrigated conditions. Similar trend was recorded with respect to transpiration under conditions. Simulated soil evaporation was more in wider spacing than closer spacing. Similar trend was recorded with regard to simulated run-off. Predicted nitrate content (final) of irrigated soil decreased. It is concluded that DSSAT v 4.5CERES-Maize model is very robust in predicting the growth and yield of maize as influenced by agrotechniques and could be used in wider perspective.
Key words: Standard meteorological week, days after sowing, planting dates, planting density, simulation, yield attributes, yield.
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Singh, G., Lone, B.A., Dar, Z.A., Singh, P., Fayaz, A., Kumar, S., Qayoom, S. and Singh, K.N., Simulating Date of Sowing in Maize (Zea mays L.) Under Irrigated Conditions Using CERES-Maize Model, Int. J. Pure App. Biosci.5(4): 980-993 (2017). doi: http://dx.doi.org/10.18782/2320-7051.4016
