Productivity, economics and energetics of potato (Solanum tuberosum)-based systems as an alternative to rice (oryza sativa)–wheat (triticum aestivum) in doaba region of Punjab

摘要

© 2020, Indian Society of Agronomy. All rights reserved.A field experiment was conducted on potato (Solanum tuberosum L.)-based cropping systems as an alternate to rice (Oryza sativa L.)–wheat (Triticum aestivum L.) cropping system at Jallowal (Jalandhar), Punjab, during 2016–17. Eight cropping systems, viz. potato–spring maize (Zea mays L.)–basmati rice, potato (Solanum tubersoum L.)–okra [Abelmoschus esculentus (L.) Moench]–basmati rice, potato–bottle gourd [Lagenaria siceraria (Molina) Standl.]–maize, potato–bitter gourd (Momordica charantia L.)–maize, potato–onion (Allium cepa L.)– maize, potato–summer greengram [Vigna radiata (L.) R. Wilezek]–maize, potato–summer greengram–basmati rice and rice–wheat, were laid out in randomized complete-block design with 3 replications. Rice-equivalent yield was higher in potato–onion–maize system (32.4 t/ha), being significantly higher than all the other systems. Potato–on-ion–maize system also resulted in the highest net returns of 293,000/ha followed by potato–bitter gourd–maize (260,000/ha) and potato–okra–basmati rice ( 249,000/ha) compared to rice–wheat systems (113,000/ha). The highest benefit: cost ratio of 1.32 was obtained in potato–onion–maize system. The production efficiency was also recorded higher in the same system. Both, energy-use efficiency and specific energy were the highest in rice– wheat system, which was statistically at par with potato–summer greengram–maize and potato–spring maize– basmati rice.