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  1. KRISHI Publication and Data Inventory Repository
  2. Crop Science A5
  3. ICAR-Indian Institute of Maize Research G3
  4. CS-IIMR-Publication
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Please use this identifier to cite or link to this item: http://krishi.icar.gov.in/jspui/handle/123456789/31494
Title: Soil water dynamics, water productivity and radiation use efficiency of maize under multi-year conservation agriculture during contrasting rainfall events
Other Titles: Not Available
Authors: Parihar CM
Nayaka HS
Rai VK
Jat SL
Parihar N
Aggarwal P
Mishra AK
ICAR Data Use Licennce: http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf
Author's Affiliated institute: ICAR::Indian Institute of Maize Research
ICAR::Indian Agricultural Research Institute
Published/ Complete Date: 2019-09-01
Project Code: Not Available
Keywords: Maize
soil water dynamics
radiation use efficiency
Publisher: Elsevier
Citation: Parihar CM, Nayaka HS, Rai VK, Jat SL, Parihar N, Aggarwal P and Mishra AK (2019) Soil water dynamics, water productivity and radiation use efficiency of maize under multi-year conservation agriculture during contrasting rainfall events. Field Crops Research, 241:1075570. 10.1016/j.fcr.2019.107570
Series/Report no.: Not Available;
Abstract/Description: Increasing resource degradation (soil) and resource scarcity (water) in Indo Gangetic Planes (IGP) had popularized the concept of conservation agriculture (CA). CA practices can alter the soil hydraulic properties by improving soil physical environment and hence water productivity (WP). Since CA practices are highly site - specific in nature, its worthiness under different cropping systems, soil types and agro - climatic zones must be studied. In the context of above - mentioned scenario of crop management practices, Hydrus - 2D model was used to evaluate most suitable CA - based practice for north western (NW) IGP to understand the process of water transport. The experiment had 3 - tillage and crop establishment practices [ZT - zero tillage; PB - permanent raised bed and CT - conventional tillage] in main plot and 4 - cropping systems [MWMb - maize - wheat - mungbean; MCS - maize - chickpea - Sesbania; MMuMb - maize - mustard - mungbean and MMS - maize - maize - Sesbania] in sub - plot. The validation of Hydrus - 2D showed that nRMSE was observed between 0.19 - 0.25 and R2 value between 0.80 - 0.87 at P<0.01. This indicates model is performing efficiently. The R2 value (0.87) was observed highest and RMSE (0.03) and nRMSE (0.15) was observed least in the CA - based PB plots. CA - based plots had 23%–37% less evaporation than CT plots. Cumulative root water uptake (CRWU) under PB was 11% and 15% lower, whereas CRWU under ZT was 20% and 30% higher than CT plots in 2012 and 2013, respectively. Cumulative deep drainage (CDD) in 2013 in PB was higher by 3.64 and 5.88 cm than ZT and CT, respectively. With 10 - cm higher rainfall during 2013, variability in the soil water content (SWC) was increased by 22% in CT and 2% in ZT plots. PB had 14–35% and 30–36% higher water productivity than ZT and CT plots, respectively. Radiation use efficiency (RUE) for dry - matter was observed higher under CA based plots. However, RUE for grain yield was observed similar among CA and CT plots during 2012, but in 2013, ZT outperformed than CT plots. The outcome of this study is, the higher rainfall during 2013 mainly contributed to more CDD. Highly variable SWC was observed in the CT plots. With lesser deep drainage in ZT, root water uptake (RWU) was higher and WP was lower, whereas PB plots had comparatively less - moist soil profile and per unit of RWU + evaporation, a proportionately higher dry - matter was produced. In a well - drained soil profile of PB plots frequent and light irrigation may be advocated, whereas in ZT with better profile storage and lesser variability of SWC during both the year irrigation may be required less frequently. Therefore, adoption of CA - based practices leads to higher crop productivity and resource use efficiency, because of favorable soil hydrological propertywith less fluctuation in soil water content in maize under diversified cropping systems of IGP of south Asia.
Description: Not Available
ISSN: Not Available
Type(s) of content: Research Paper
Sponsors: Not Available
Language: English
Name of Journal: Field Crops Research
NAAS Rating: 10.31
Volume No.: 241
Page Number: 1075570
Name of the Division/Regional Station: Not Available
Source, DOI or any other URL: https://www.sciencedirect.com/science/article/abs/pii/S0378429018319750
10.1016/j.fcr.2019.107570
URI: http://krishi.icar.gov.in/jspui/handle/123456789/31494
Appears in Collections:CS-IIMR-Publication

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