International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 6
First page : (496) Last page : (500)
Article doi: http://dx.doi.org/10.18782/2320-7051.5883
Nutrient Uptake of Maize and Its Associated Weeds As Influenced by Sequential Application of Herbicides
Shaik Nazreen1*, D. Subramanyam1, N. Sunitha2 and V. Umamahesh3
1Department of Agronomy, S.V. Agricultural College, Tirupati, ANGRAU, 517 502
2Department of Agronomy, Regional Agricultural Research Station, Tirupati, ANGRAU
3Department of Crop Physiology, S.V. Agricultural College, Tirupati, ANGRAU, 517 502
*Corresponding Author E-mail: nazreennaz57@gmail.com
Received: 12.10.2017 | Revised: 16.11.2017 | Accepted: 21.11.2017
ABSTRACT
An experiment was carried out during the kharif season of 2016 at Tiruapti with 10 weed management practices to study the nutrient depletion patterns by kharif maize ( Zea mays L.) and associated weeds. Amongst the weed management practices, nutrient depletion by weeds was minimum under hand weeding and maximum (34.22 kg N, 13.67 kg P2O5 and 16.17 kg K2O/ha) in weedy condition, whereas total nutrient uptake by kharif maize was maximum (166.6 kg N, 63.5 kg, P2O5 and 191.7 kg K2O/ha) under the treatment pre-emergence application of alachlor 1000 g/ha fb post-emergence application of halosulfuron-methyl 67.5 g/ha + tembotrione 100 g/ha followed by hand-weeding (165.3 kg N, 62.2 kg P2O5 and 118.2 kg, K2O/ha). The nutrient uptake by crop in weedy condition was least. Chemical weeding checked nutrient drain by weeds significantly compared with weedy check. The reduction in yield due to weeds in unweeded check was 53.62 per cent.
Key words: Maize, Nutrient uptake, Pre-emergence, Post-emergence, Weed management practices.
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Nazreen, S., Subramanyam, D., Sunitha, N. and Umamahesh,V., Nutrient Uptake of Maize and Its Associated Weeds As Influenced by Sequential Application Of Herbicides, Int. J. Pure App. Biosci.5(6): 496-500 (2017). doi: http://dx.doi.org/10.18782/2320-7051.5883
