Vol. 8, Issue 1 (2019)

Author(s):
Pratima Gupta, Devi Singh, VM Prasad and Vidhur Kumar

Abstract:
The present investigation entitled, “Integrated nutrient managemnt on yield and quality of guava (psidium guajava L.) cv. Allahabad Safeda under high density planting” was conducted at Department of Horticulture, Allahabad School of Agriculture, Sam Higginbottom University of Agriculture, Technology and Sciences, Allahabad during 2016-17 and 2017-18. The experiment laid out in Randomized Block Design (RBD) with three replications. The experiment consisted of ten treatments viz. (T₀) 100% RDF (NPK-180,90,90g), (T₁) 75% RDF+2.5 kg Vermicompost, (T₂) 50% RDF+2.5 kg Vermicompost, (T₃) 75% RDF+10 kg FYM, (T₄) 50% RDF+10 kg FYM, (T₅) T₃ + Micronutrients (Zn+B+Mn (0.5,0.2,0.1%), (T₆) T₄ + Micronutrients (Zn+B+Mn (0.5,0.2,0.1%), (T₇) 50% RDF+10 kg FYM+Azotobactor, (T₈) 50% RDF+10 kg FYM+ Azotobactor+ PSB (100g/P), (T₉) 50% RDF+10 kg FYM+ VAM, (T₁₀) 50% RDF+10 kg FYM+ Azotobactor+ VAM. The application of integrated nutrient management had significant effect on yield and quality of guava fruits in both rainy and winter season. The treatment T5, 75% RDF+10 kg FYM + Micronutrients (Zn+B+Mn (0.5,0.2,0.1%), recorded maximum number of flowers (70.80 and 80.75), higher fruit diameter (6.32 and 6.69 cm), maximum fruit length (5.98 and 6.12 cm), more number of fruits (39.20 and 37.25), fruit volume (119.25 and 124.25 ml), average fruit weight (136.35 and 169.32 g), fruits yield per plant (5348.77 and 6310.41 g) and highest yield (82.36 and 116.76 q/ha) whereas To (100% RDF) recorded lowest value of these characters during rainy and winter season, respectively. The regarding quality characters of fruits treatment 75% recommended dose of NPK with FYM (10 kg) and micronutrient recorded minimum acidity (0.398 and 0.405%), maximum total sugar (0.7.98 and 7.80 %), TSS (11.49 and 11.88 brix), ascorbic acid (247.55 and 228.10), and higher pectin content (1.19 and 1.24%) while minimum in control.