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Effect of Tillage, Residue and Fertilizer on Yields within a Wheat-Maize Cropping System

Effect of Tillage, Residue and Fertilizer on Yields within a Wheat-Maize Cropping System

Aqila Shaheen and Nadia Sabir

Department of Soil and Environmental Sciences, The University of Poonch, Rawalakot Azad Jammu and Kashmir-Pakistan.

aqeela.shaheen@gmail.com  

ABSTRACT

The field study was carried out to determine the effect of tillage with and without residues and organic and inorganic fertilizers on yield of wheat-maize cropping systems in the erosion-vulnerable sub-humid area. Treatments included tillage levels i.e. ST (shallow tillage), STR (shallow tillage with residues), DT (deep tillage) and DTR (deep tillage with residues). Sub plots had three fertilizer’s levels viz. F1 (control), F2 (inorganic fertilizers) and F3 (farm yard manure; FYM+ inorganic fertilizers). Deep tillage increased wheat yield by 60%, 37% and 29% over ST, STR and DTR, respectively. F2 and F3 increased grain and straw yield compare to F1. In the case of maize, DT increased grain yield by 53%, 20% and 15%, over ST, STR and DTR, respectively. Deep tillage showed statistically higher water use efficiency (WUE) of 4.56 kg ha-1 mm-1 and 4.02 kg ha-1 mm-1 for both wheat and maize, respectively. However, similar WUE of wheat and maize was recorded for F2 and F3. Soil nitrogen, phosphorus and potassium after wheat-maize cropping rotations significantly responded to tillage, residues and organic and inorganic fertilizers. These results suggest that deep tillage has the potential to increase crop yield and WUE of wheat-maize cropping system in mountainous and sub-humid conditions.

 

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Sarhad Journal of Agriculture

September

Vol. 35, Iss. 3, Pages 663-1019

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