📄 Abstract
<p>The field experiments were made in irrigated sunflower to optimise the integrated nutrient and weed management practices for augmenting sunflower productivity, at Annamalai University Experimental Farm, Annamalai Nagar, Tamilnadu, India. The experiment was laid out in split plot design with three replications. The details of the treatment in mainplots are M<sub>1</sub>-Control, M<sub>2</sub>-RDF(40:20:20 kg NPK ha<sup>-1</sup>) FYM @ 12.5 t ha<sup>-1</sup>, M<sub>3</sub>-RDF Vermicompost @ 5 t ha<sup>-1</sup>? treatment with Azospirillum (600 g ha<sup>-1</sup>) ZnSO<sub>4</sub> @ 25 kg ha<sup>-1</sup> foliar spray of 1% KH<sub>2</sub>PO<sub>4</sub> (twice at 25 and 55 DAS), M<sub>4</sub>- RDF FYM @ 12.5 t ha<sup>-1</sup>? treatment with Azospirillum (600 g ha<sup>-1</sup>) ZnSo<sub>4</sub> @ 25 kg ha<sup>-1</sup> foliar spray of 1% KH<sub>2</sub>PO<sub>4</sub> (twice at 25 and 55 DAS) M<sub>5</sub>- RDF Vermicompost @ 5 t ha<sup>-1</sup>? treatment with Azospirillum (600 g ha<sup>-1</sup>) ZnSo<sub>4</sub> @ 25 kg ha<sup>-1</sup> and M<sub>6</sub>- RDF FYM @ 12.5 t ha<sup>-1</sup>? treatment with Azospirillum (600 g ha<sup>-1</sup>) ZnSo<sub>4</sub> @ 25 RDF FYM @ 12.5 t ha<sup>-1</sup>? treatment with Azospirillum (600 g ha<sup>-1</sup>) ZnSO<sub>4</sub> @ 25 kg ha<sup>-1</sup>and the subplots are S<sub>1</sub>- Unweeded control, S<sub>2</sub>- Pre emg. Oxyflourfen @ 0.1 kg ha<sup>-1</sup> HW at 30 DAS, S<sub>3</sub>- Pre sowing fluchloralin @ 1 kg ai ha<sup>-1</sup> HW at 30 DAS, S<sub>4</sub>- Pre emg. Pendimethalin @1 kg ai ha<sup>-1</sup> HW at 30 DAS and S<sub>5</sub>- HW twice at 15 and 30 DAS. The results of the study evidently proved that application of recommended NPK vermicompost ???? ZnSo<sub>4</sub> foliar spray of KH<sub>2</sub>PO<sub>4</sub> along with fluchloralin HW at 30 DAS (M<sub>3</sub>S<sub>5</sub>) as an agronomically efficient, eco-friendly and economically viable technology for improving sunflower yield and quality. This treatment (M<sub>3</sub>S<sub>5</sub>) combination registered lowest values for weed density, nutrient removal by weeds, weed biomass and maximum weed control index and maximum values for growth and yield attributes and yield, quality and nutrient uptake of sunflower in both the crops.</p> <p><strong>KEYWORDS:</strong> sunflower, seed, inorganic fertilizer, biofertilizers, soil</p>
📚 How to Cite:
Kalaiyarasan, C , Volume 6 , Issue 10, october 2018, EPRA International Journal of Economic and Business Review(JEBR) ,