: The present investigation was carried out to determine the suitable and optimum concentration of boron and plant growth regulators for maximum productivity and quality of guava cv. during Kharif season. From the present study it can be concluded that the treatment T 10 (0.2% boron + GA 3 60 ppm+ NAA 150 ppm + ethrel 750 ppm) was found best for physical parameters and treatment T 5 (0.2% boron + NAA 150 ppm) for yield point of view, while for quality point of view the treatment T 9 (0.2% boron + ethrel 1000 ppm) was found best. As far as the relative economics of the treatment is concerned, the maximum net realization of Rs. 1,72,807 per hectare with highest 1:6.6 cost benefit ratio (CBR) was obtained by the treatment T 5 (0.2% boron + NAA 150 ppm) as compared to other treatments. Therefore, the treatment T 5 (0.2% boron + NAA 150 ppm) is best among all treatment for higher production.
SUMMARY :The present investigation was carried out to study the response of different chemical treatment on shelf-life and quality of tomato fruits. The fruit samples were drawn and analysed periodically for various physical and bio-chemical changes. In summer results revealed that tomato fruits treated with post harvest treatments of KMnO 4 + BLE reduce ripening and gave maximum marketable fruits with increased shelf-life of tomato fruits. The minimum loss in weight was noted when tomato fruits treated with 2 per cent bael leaf extract. The fruits treated with KMnO 4 3000 ppm + 2 per cent BLE increased the per cent marketable fruits with increase in storage period. Maximum shelf-life (10 days) was observed in fruits treated with KMnO 4 2000 ppm + 2 per cent BLE and KMnO 4 2000 ppm alone. Maximum acidity was recorded in T 1 with 2 per cent bael leaf extract. Ascorbic acid content was highest with the post harvest application of GA 3 400 ppm in combination with 2 per cent bael leaf extract. The fruits treated with GA 3 increases TSS, reducing sugar and total sugar at initial and later stage of storage, but acidity was increased at later stage of storage. Maximum percentage of reducing and total sugar was recorded in control condition.
The present experiment entitled "Effect of pre-plant soaking of corms in bio-regulators on growth, flowering, yield and quality in gladiolus (Gladiolus grandiflorus L.) cv. Rani." was carried out at the Jambuvadi Farm, Department of Horticulture, J. A.U., Junagadh (Gujarat) during 2019 to 2020. The results of the study indicated that, the pre-plant soaking of corms in bio-regulator GA3 (150 ppm) was found effective for earlier sprouting (6.90 days), maximum plant height (78.74 cm) and number of leaves (13.62). Regarding flowering characters, the GA3 150 ppm responded best especially in commercial traits like spike length (86.82 cm), rachis length (40.30 cm), number of floret/spike (10.63), diameter of 2 nd floret (13.09 cm) and duration of flowering (22.34 days).
A field experiment was conducted at the Agricultural Research Station (fruit crops), Junagadh Agricultural University, Mahuva during the year 2004-2009 to study the nutrient management in coconut garden through organic and inorganic manuers. The experiment was laid out in Randomized Block Design with three replications. There were 10 treatments. The analysis of five year pooled data revealed that the treatment T 7 (50 % RDF + 50 % N from castor cake) recorded significantly higher nut yield (78.33 nut/palm/year). Nut quality and soil properties were also improved by T 7 .
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