International Journal of Agricultural Sciences

Mandeep Kaur ¹, Rajesh Tiwari ¹, B. R. Kumawat ¹

Affiliations
1 Department of Fruit Science, College of Horticulture (R.V.S.K.V.V.) Mandsaur, M.P., IN

Abstract

An experiment was conducted during 2011-2012 at the Department of Fruit Science, K.N.K. College of Horticulture, Mandsaur (M.P.) on seven year old guava tree cv. L-49 with two levels of nitrogen i.e., 600 g N (100% N) and 450 g N (75% N), two levels of phosphorus i.e., 400 g P₂O₅ (100% P₂O₅) and 300 g P₂O₅ (75% P₂O₅) and a common dose of potassium i.e., 300 g K₂O and 30 g each of Azospirillium and PSB inoculation and 10 kg Vermicompost. The results revealed that the age fruit weight (220.37 g), number of fruits per tree (384), TSS (11.67 0Brix), total sugar (8.06%), reducing sugar (4.17%), non-reducing sugar (3.89%), pectin (0.81%), ascorbic acid (207.90 mg/100 g pulp) and lowest acidity (0.20%) were obtained with treatment T₉. The combined application of recommended dose of NPK with vermicompost (10 kg) and biofertilizers (30 g /plant) gave significantly higher fruit yield per tree (84.66 kg) with higher B: C ratio (1:5.27).

Keywords

Guava, L-49, Integrated Nutrient Management, Yield, Quality

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R. S. Waskela ¹, R. N. Kanpure ¹, B. R. Kumawat ¹, B. K. Kachouli ¹

Affiliations
1 Department of Fruit Science, College of Horticulture, Mandsaur (M.P.), IN

Abstract

A field experiment was conducted at Instructional cum Research Fruit Orchard, Department of Fruit Science, College of Horticulture, Mandsaur Madhya Pradesh, to study the effect of micronutrients on growth, yield and quality of guava. Foliar application of zinc sulphate @ 0.75%, significantly increased the shoot length (13.44 cm), leaves per shoot (11.65), shoot diameter (0.52 cm), leaf area (71.60 cm²), fruit length (7.06 cm), fruit width (7.09 cm), number of fruit /plant (164.80), fruit weight (187.18 g), yield per plant (30.90 kg), yield per hectare (85.89 q/h) and all the physico chemical parameters of guava fruits over to other levels of zinc sulphate and control, followed by ZnSo₄ @ 0.50%. Magnesium sulphate at 0.75% shows significantly increased the shoot length (12.95 cm), leaves per shoot (11.48), shoot diameter (0.50cm), leaf area (70.81 cm²), fruit length (6.96 cm), fruit width (6.93 cm), fruit volume (175.05 ml), specific gravity (1.040), pulp (96.91%), pulp : seed ratio (32.09), TSS (11.04 ^oBrix), acidity (0.65%), ascorbic acid (158.24 mg/100g), TSS : acid ratio (16.73), pectin content (0.84%), reducing sugar (3.45%), non reducing sugar(3.45), Total sugar (6.90%), minimum seed (3.09%) and all the yield attributing parameters of guava as over to other level of magnesium sulphate and control. However, magnisium sulphate at 0.50% showed the non significant effects for most of the physico chemical and yield attributing parameters of guava fruits. The combined spray of zinc sulphate @ 0.75% and magnesium sulphate @ 0.75% prove the best for the most of the physico chemical and yield parameters of guava fruits, followed by zinc sulphate @ 0.75% and magnesium sulphate @ 1.0%.

Keywords

Zinc Sulphate, Magnesium Sulphate, Growth, Yield, Quality, Guava

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