1Scientist, IISSR, Bhopal, Madhya Pradesh-462 038
2Principal Scientist, DMR, New Delhi-110 012
3Scientist, ARS, Hanumangarh, Rajasthan-335 523
4Senior Scientist, Division of Agronomy, Indian Agricultural Research Institute, New Delhi-110 012
5Principal Scientist, Division of Agronomy, Indian Agricultural Research Institute, New Delhi-110 012
6Professor, Division of Agronomy, Indian Agricultural Research Institute, New Delhi-110 012
Indian Agricultural Research Institute, New Delhi-110 012
*Corresponding author Email: ashok_agro@iari.res.in
Online published on 13 February, 2014.
A field experiment was conducted during 2008–09 and 2009–10 at New Delhi, to study the effect of organic sources of nutrients on growth, yield and yield attributes of pop porn (Zea mays averta Sturt)-potato (Solanum tuberosum L.) cropping system. The experiment consisted of 24 treatment combinations with 8 treatments in pop corn [control, recommended dose of fertilizers (RDF) (N120P25K35 kg/ha), farmyard manure equivalent to 120 kg N/ha (FYM120), leaf compost equivalent to 120 kg N/ha (LC120), vermicompost equivalent to 120 kg N/ha (VC120), farmyard manure equivalent to 90 kg N/ha (FYM90), leaf compost equivalent to 90 kg N/ha (LC90) and vermicompost equivalent to 90 kg N/ha (VC90)] and 3 treatments in potato crop [control, farmyard manure equivalent to 60 kg N/ha (FYM60) and farmyard manure equivalent to 90 kg N/ha (FYM90)]. The application of RDF (N120P25K35 kg/ha) recorded significantly highest plant height, leaf-area index and dry matter with higher values of yield attributes, viz. cob length and girth, cobs/ha over the control. Application of vermicompost equivalent to 120 kg N/ha was the best source and remained at par with VC90, FYM120, FYM90 and N120P25K35 kg/ha for growth and yield attributes of pop corn. Similar trend in respect of grain and stover yield was also found. Due to residual fertility of FYM (equivalent to 120 kg N/ha) potato recorded the highest plant height, LAI, number of haulms and dy matter in haulms. Both FYM (equivalent to 90 kg/ha) and vermicompost (equivalent to 120 kg N/ha) exhibited the effects similar to FYM @ 120 kg N/ha. The yield and yield attributes of potato, viz. tubers/hill, fresh and dry weight of tubers, tuber yield and haulm yield also exhibited similar trend. Regarding direct effects of FYM, application of FYM equivalent to 90 kg N/ha in potato recorded the higher plant height, LAI, haulms/hill, dry matter in haulms; and yield and yield attributes compared to FYM equivalent 60 kg N/ha and control.
Crop production, Farmyard manure, Leaf compost, Pop corn, Potato, Vermicompost
