Growth, nutrient accumulation and crop yields as influenced by crop residues recycling and Trichoderma inoculation in rice (Oryza sativa)wheat (Triticum aestivum) and sugarcaneratoonwheat cropping systems in subtropical India

S.K. SHUKLA; SWAHA SHEE; S.K. MAITY; S.K. AWASTHI; ASHA GAUR

doi:10.59797/ija.v65i1.2951

Authors

S.K. SHUKLA
SWAHA SHEE
S.K. MAITY
S.K. AWASTHI
ASHA GAUR

DOI:

https://doi.org/10.59797/ija.v65i1.2951

Keywords:

Available N, Cane equivalent yield, Dry-matter accumulation; Leaf area N uptake

Abstract

A field experiment was conducted during 2013-15 at the ICAR-Indian Institute of Sugarcane Research, Lucknow, Uttar Pradesh study the effect of crop-residues recycling and Trichoderma inoculation on growth, nutri- ent accumulation and crop yields in 2 cropping systems, viz. rice (Oryza sativa L.)wheat (Triticum aestivum L.) ricewheat and sugarcaneratoonwheat. The experiment was laid out in a split-plot design, with cropping sys- tems in main plots and residues management practices in subplots. Among the different crop residue treatments, the highest available N (222.8 kg N/ha and 164.8 kg/ha at 015 and 1530 cm depth, respectively) was recorded in the treatment where full residue was recycled along with Trichoderma. The leaf-area index was higher in wheat (3.97) than rice crop (3.07) at the maximum growth stage. Wheat crop grown in sugarcane-based system accumu- lated higher dry matter (8.02 t/ha) than wheat grown in ricewheat system (7.71 t /ha). A significant increase in cane-equivalent yield was obtained in sugarcane-based system as compared to ricewheat system. Cane-equiva- lent yield ranged from 103.3 to 138.3 t/ha in sugarcaneratoonwheat system, considering yields of ratoon-cane and wheat crops. Residue recycling + Trichoderma resulted in higher cane-equivalent yields in both the cropping systems. The residue burning/ removal caused significantly low yields in succeeding crop and cane-equivalent yields in both the cropping systems. The benefit: cost ratio (2.96) was the highest with sugarcaneratoonwheat cropping system under residue recycling + Trichoderma. Thus, residue recycling along with application of Tricho- derma proved effective in both the cropping systems, but higher benefits could be achieved under sugarcanera- toonwheat cropping system.

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