Vol. 6 (4) : July-August 2015 issue
Green Farming Vol. 6 (4) : 744-747 ; July-August, 2015
Tillage residual effects on soil moisture dynamics after wheat during intervening period of rice-wheat sequence in South-Asia
RAJAN BHATT1* and S.S. KUKAL2
Department of Soil Science, Punjab Agricultural University, Ludhiana - 141 004 (Punjab)
Designation : 1Ph.D Research scholar *(rajansoils@gmail.com), 2Professor
Subject : Agronomy and Crop Production
Paper No. : P-2777
Total Pages : 4
Received : 25 October 2014
Revised accepted : 13 June 2015
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Citation :
RAJAN BHATT and S.S. KUKAL. 2015. Tillage residual effects on soil moisture dynamics after wheat during intervening period of rice-wheat sequence in South-Asia. Green Farming Vol. 6 (4) : 744-747 ; July-August, 2015
ABSTRACT
An experiment was conducted with an objective was to evaluate the residual tillage treatmental effects viz., conventionally (CT) and zero tilled plots (ZT) on soil moisture dynamics, for which time domain reflectrometer (using 7.5 cm and 20 cm probes), tensiometers (at 10, 20 and 30 cm soil depths), soil thermometers (upto 5 cm soil depth) and lysimeters (in selected treatments) were used. The CT plots conserved more moisture than ZT plots (with 2 t ha-1) after wheat. On an average, during the intervening period after wheat, soil matric tension reported to be 28%, 18% and 18 % higher in ZT plots than CT plots in 10, 20 and 30 cm soil depths respectively while soil temperature was 2.2% higher in the ZT plots. Recorded water depths upto 7.5 cm of soil surface was 10.3% higher in CT plots in comparison to the ZT during the intervening periods. Evaporation losses pragmatic to be higher (7.6%) in ZT plots, because of recorded lower mulch loads, higher surface temperature and continuity of soil pores in compare to CT plots and this conserved soil moisture helps in cultivating intervening green manuring crops which further improves the declining soil health, water productivity and finally livelihoods in the region.
Key words :
Intervening moisture retention, Lysimeter, Soil thermometer, Tensiometer, Time domain reflectrometer.