Effect of Varying Drip Irrigation Levels and Different Methods of NPK Fertilizer Application on Growth And Productivity of Broccoli (Brassica oleracea L.var. Italica)

摘要

The present study was conducted at experimental farm of CSK HPKV, Palampur, during the year 2012-2013 with the objectives of evaluating the effects of drip irrigation levels applied at CPE 0.4,0.6 and 0.8 and different methods of fertilizer application on growth, quality parameters, productivity and nutrient uptake of broccoli. The treatments comprised of (a) three drip irrigation levels viz., I_(0.4)- Drip at 40 per cent CPE, I_(0.6)-Dripat60 per cent CPE and l_(0.8)-Drip at 80 per cent CPE (b) three fertilizer application levels viz., F_(100),-100 per cent recommended dose of fertilizer through fertigation, F_(Fc25*F75)-25 percent recommended dose of fertilizer through conventional method as a basal dose and 75 per cent through fertigation and F_(CF)-l00 per cent of recommended dose of fertilizer through conventional method and fertilizers, (c) control -Flood irrigation of 4 cm at 8-10 days interval +100 per cent recommended dose of fertilizer and (d) absolute control- No recommended dose of fertilizer and flood irrigation of 4 cm at 8-10 days interval. The broccoli cv. Palam Samridhi was transplanted on October 31,2012. The results indicated that l_(0.8) and lRechad higher soil water content in comparison to l_(0.4) and l_(0.6). The l_(0.8) treatment due to favorable soil moisture regimes led to better root and shoot growth, higher leaf area index and marketable curd yield in comparison to l_(0.4), l_(0.6)and l_(Rec). The F_(100) and F_(0.25-F75)treatments had higher root and shoot growth andmarketable curd yield in comparison to F^ The marketable curd yield obtained under l_(0.4)F_(100) was at par with l_(0.8)F_(100) treatment, which resulted in saving of 20 per cent irrigation water.