Effect of bio-fertilizer on growth, yield and quality of strawberry (Fragaria × ananassa Duch.) cv. Camarosa
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Date
2017-07
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Department of Horticulture (Fruit & Fruit Technology), BAU, Sabour
Abstract
The present investigation was carried out during 2016-17 at the Horticulture Garden, Department of Horticulture (Fruit & Fruit Technology), BAC, Sabour to study the effect of bio-fertilizer on growth, yield and quality of strawberry (Fragaria × ananassa Duch.) cv. Camarosa. The experimental finding revealed that the sole inoculation of Azospirillium and Azotobacter and in combination with PSB significantly influenced the plant height, leaf number, leaf area, specific leaf weight and leaf relative water content as compared to control and 100% RDF treatment. Through the application of biofertilizer, precocity in flowering and fruiting was observed with earliest flowering and fruiting in 75% RDF + Azospirillium @ 2g/plant + PSB @ 2g/plant + topdressing of 25% K (42 and 50.67 DAT, respectively) followed by 75% RDF + Azotobacter @ 2g/plant + PSB @ 2g/plant + topdressing of 25% K treatment (45.72 and 52.22 and DAT, respectively). Number of fruits/plant and total fruit yield was also increased significantly under these two treatments (20.44 and 18.11 fruits/plant, respectively and 357.67 and 313.33 g fruits/plant, respectively). In addition, juice content (89.55%), TSS (10.35 ºB), TSS: Acid ratio (10.97), total sugar (6.69%), ascorbic acid (43.80 mg/100g), anthocyanin content (81.05 mg/100g), total phenol (5.97 mg Gallic acid equiv./g), flavonoids (0.1228 mg/g) and antioxidant capacity (2.13 µmol. Trolox equiv./100g) was estimated maximum in 75% RDF + Azospirillium @ 2g/plant + PSB @ 2g/plant + topdressing of 25% K treatment with par results in 75% RDF + Azotobacter @ 2g/plant + PSB @ 2g/plant + topdressing of 25% K treatment. The soil fertility status was also improved significantly in all the treatment. The available N and K content were improved significantly in 75% RDF + Azospirillium @ 2g/plant + PSB @2g/plant + topdressing of 25% K treatment (200.10 and 211.70 kg ha-1, respectively) as compared to control (167.85 and 201.80 kg ha-1). In addition, viable count of soil microorganisms (Bacteria, actinomycetes and fungi) was also estimated maximum (4066, 190 and 11.33 ×104 cfu g-1 soil, respectively) in 75% RDF + Azospirillium @ 2g/plant + PSB @ 2g/plant + topdressing of 25% K treatment with par results in 75% RDF + Azostobacter @ 2g/plant + PSB @2g/plant + topdressing of 25% K treatment.
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