The study was initiated to know the energy and nutrients utilization in wheat-weed ecosystem during the year 2016-17 and 2017-18 in 4 years old eucalyptus plantation in Randomized Block Design with three replications. The investigation was carried out at farmer field Village- Majitha Block-Shahpura District- Jabalpur (.). The result revealed that Launaea nudicaulis, Rumax dentatus, Melilotus indicus, Chenopodium album and Phalaris minor are major weed found in experiment area. Launaea nudicaulis, Rumax dentatus, and Melilotus indicus had highest weed dry weight. The significant reduction in dry matter accumulated by these weed species was recorded with the hand weeding and post-emergence application of 2, 4-D @ lit ha-1 and 2, 4-D @ lit ha-1 fb metribuzin @ Kg ha-1 . The maximum NPK content was observed by Rumax dentatus, Melilotus indicus and Chenopodium album in all the treatment combinations. Under hand weeded plot, the total weeds removed , , NPK kg ha-1 whereas, the maximum nutrients removal was noted in weedy check , and kg ha-1 . In wheat-weed ecosystem, the energy utilization by weeds was maximum in weedy check ( lakh k cal ha-1 ) while, the minimum utilization was under hand weeding ( lakh k cal ha-1 ) treatment. The energy utilization by the crop was higher with the application of hand weeding ( lakh k cal ha-1 ) whereas, the minimum energy was utilized by the crop under weedy check ( lakh k cal ha-1 ). The energy utilized by the wheat seed was maximum ( lakh k cal ha-1 ) in hand weeding. The lowest energy utilized by wheat seed was observed under weedy check ( lakh k cal ha-1 ). | Energy utilization and nutrients removal in wheat-weed ecosystem
