• J. Satheesh
• S. Ramesh
• S. Manimaran
• P. Sudhakar

Field experiment was conducted at the Annamalai University, Experimental Farm, Department of Agronomy, Faculty of Agriculture, Annamalai Nagar to study the post harvest soil nutrient status and nutrient uptake by crop and weed as influenced by the pre and post emergence herbicides application in maize during (Feb - June) 2015. The experiment was laid out in randomized block design with three replications and nine treatments. The treatment details are viz., Weedy check (T1), Lumax 440 ZC W/V @ 2.5 lit ha-1 on 3 DAS (T2), Lumax 440 ZC W/V @ 3 lit ha-1 on 3 DAS (T3), Lumax 440 ZC W/V @ 3.5 lit ha-1 on 3 DAS (T4), S-metolachlor 96% EC @ 1lit ha-1 on 3 DAS (T5), Mesotrione 48% SC @ 208 ml ha-1 on 3 DAS (T6), Atrazine 50 WP @ 2 Kg ha-1 on 3 DAS (T7), Paraquat dichloride 24% SL @ 2 lit ha-1 on 10 DAS (T8) and twice hand weeding at 20 and 40 DAS (T9). All the treatments were found to be significantly influenced the grain and stoves yield of maize, nutrient uptake by maize and weeds and post harvest soil nutrient status. The result of the study clearly showed that pre-emergence application of Lumax 440 ZC W/V @ 3.5 lit ha-1 on 3 DAS (T4) significantly registered higher grain and stover yield of maize, more uptake of nutrients by maize and lesser uptake of nutrients by weeds and higher availability of post harvest soil nutrient status. However, it was on par with twice hand weeding at 20 and 40 DAS (T9). Weedy check (T1) recorded the higher weed population resulting in lesser grain yield, which inturn lesser uptake of nutrients by maize crop.

Post harvest soil nutrient status and nutrient uptake by crop and weed as influenced by the pre and post emergence herbicides application in maize

"Post harvest soil nutrient status and nutrient uptake by crop and weed as influenced by the pre and post emergence herbicides application in maize", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 2, page no.1156-1162, February-2018, Available :http://www.jetir.org/papers/JETIR1802242.pdf

"Post harvest soil nutrient status and nutrient uptake by crop and weed as influenced by the pre and post emergence herbicides application in maize", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 2, page no. pp1156-1162, February-2018, Available at : http://www.jetir.org/papers/JETIR1802242.pdf