Effect of inorganic NPK fertilizers under different proportions on growth, yield and juice quality of sugarcane (Saccharum officinarum L).

Abstract

Sugarcane variety Thatta-10 was sown. The experiment, was meant to observe the effect of inorganic NPK fertilizers under different proportions on growth, yield and juice quality of sugarcane; comprised different inorganic NPK fertilizer doses viz. Control (0-0-0 NPK kg ha-1), 100% recommended (225-112-168 NPK kg ha-1), 75% less than recommended (56.25-28.0-42.0 NPK kg ha-1), 50% less than recommended (112.5-56.0-84.0 NPK kg ha-1), 25% less than recommended (168.75-84.0-126.0 NPK kg ha-1) and 25% more than recommended (281.25-140.0-210.0 NPK kg ha-1). In the study agronomic, physiological, quality and nutrient uptake traits viz. tillers plant-1 , plant height, stem girth, internodes plant-1 ,millable canes, cane yield, leaf area plant-1 , leaf area index, crop growth rate, dry matter, brix, pol, purity, commercial cane sugar, NPK accumulation and uptake in plant and ratoon sugarcane crops were higher with the application of 100% recommended fertilizer at 225-112-168 NPK kg ha-1 and 25% more than recommended fertilizer at 281.25-140-210 NPK kg ha-1. The mean values of these both NPK levels were statistically non-significant. However, all inadequate applications beyond recommended applications significantly recorded less values of all traits of sugarcane plant and ratoon crop.

Effect of Consortium of Endophytic Nitrogen Fixing Bacteria on Yield Observations of Seasonal (Suru) Sugarcane under Drip Irrigation

“…These results are in conformity with those reported by Mehta et al (1996), Kumar (2012) and Soomro et al (2013). …”

Response of groundnut (Arachis hypogaea L.) to plant growth promoting Rhizobacteria in degraded soils

“…The grain yield was enhanced to 2.17 and 1.29% by FYM and gypsum, respectively. The increase in grain yield by FYM could be due to enhanced nutrient supply and their uptake by roots by using organic products in sustainable agricultural cropping system (Timsina and Conner, 2001) and organic amendments are effective in improving (Soomro et al, 2013). These results are in line with the findings of Haynes (2000) and Nayyar and Chhibba (2000).…”

Effect of Consortium of Endophytic Nitrogen Fixing Bacteria on Plant Nutrient Concentration of Seasonal (Suru) Sugarcane under Drip Irrigation.

“…The lowest potassium concentration (1.55%) was recorded in the treatment T 1 . The increase in stage wise total nitrogen, phosphorus and potassium content in sugarcane might be due to application of organic and inorganic recommended dose of fertilizer was also reported by (Soomro et al 2013., [12]). The increase in concentration in sugarcane might be due to better nutrient supply to plants due to application of nutrients either through soil application of fertilizers and consortium foliar spray.…”