Optimal nutrient management is critical for optimizing flowering, yield, quality and improving soil health. A key approach for making chrysanthemum crop cultivation profitable is balanced fertigation at the right time. This is possible by fertigation through drip. The present study was designed in 2019–2021 at a model floriculture center, Pantnagar, to investigate the response of split application of NPK through drip fertigation on flowering attributes, yield, biochemical activity and soil nutrient status of chrysanthemum. Plants received application of NPK with five treatment combinations: T1-NPK @ 100:150:100 kg/ha/year, T2-NPK @ 100:150:100 kg/ha/year, T3-NPK @ 100:150:100 kg/ha/year, T4-NPK @ 75:112.5:75 kg/ha/year and T5-NPK @ 75:112.5:75 kg/ha/year at vegetative, bud and flowering stages. The results reveal that the plants treated with treatment T3 (NPK @ 100:150:100 kg/ha/year) exhibited maximum increases in floral bud diameter (31.45%), number of inflorescences per branch (24.44%), diameter of inflorescence (15.32–28.44%), weight of inflorescence (24.30%), stem diameter, inflorescence stem length, number of inflorescences per plant (6.16%), number of inflorescences per hectare (53.46%), chlorophyll a content, chlorophyll b content, total chlorophyll content (40.20%), carotene content of inflorescence (69.56%), organic carbon (1.22-fold), available nitrogen content (7.46%), available phosphorus and available potassium (1.14-fold) compared to the control. Conclusively, the results suggest that split application of NPK through drip fertigation may improve the inflorescence attributes, yield, biochemical activity and soil nutrient status of chrysanthemum.
Background: Garden pea is one of the most important legume crop which require proper crop management practices. Crop regulation is an important practices which enhancing the productivity of garden pea with higher economic return. This can be done by adopting proper application of PGRs. Therefore, the present study was designed to assess the effect of PGRs on growth and yield of garden pea. Methods: The present study was laid out on garden pea (Pisum sativum subsp. hortense) cv. Azad Pea-3 in a randomized block design with three replications and ten treatments comprising different levels NAA, GA3 and Salicylic acid at various stages. The data on growth and yield were recorded and analyzed statistically applying the analysis of variance technique. Result: Results revealed that the plants treated with 120 ppm gibberellic acid showed 45.39% 38.55%, 40.60% and 32.84% increment in plant height, length of pod, width of pod and number of seeds per pod and taken lowest number of days to 50% flowering over control, respectively. The use of 40 ppm NAA exhibited maximal enhancement in number of pods per plant (57.43-68.02%), seed weight per pod and Pod yield per hectare (50.62-60.26%) over remaining treatments. Conclusively, the results suggest that foliar application of PGRs favors the growth and yield of garden pea.
Delayed transplanting and insufficient nutrient application are the major factors responsible for reducedonion yield. Proper planting time is critical for getting optimal bulb yield. Selection of right cultivar is one of themost important variables in getting higher growth and yield attributes for a particular agro-climatic condition. Anexperiment was conducted to determine the effect of transplanting date, cultivar and zinc application method onyield, yield attributes and economics of onion. Results were found to be significant for all the yield attributes,yield and economics of onion. Transplanting on 01st January significantly increased the average bulb weight(81.10 g), equatorial diameter (5.58 cm), polar diameter (4.52 cm), total bulb yield (387.42 q/ha), net return (Rs367963/ha) and B:C ratio (3.84) in a pooled analysis. Among the cultivars, significantly higher average bulbweight (79.37 g), equatorial diameter (5.48 cm), polar diameter (4.42 cm), total bulb yield (387.95 q/ha), net return(Rs 368680/ha) and B:C ratio (3.83) were recorded in Bhima Shakti. In zinc application methods, significantlyhigher average bulb weight (79.68 g), equatorial diameter (5.50 cm), polar diameter (4.42 cm), total bulb yield(386.67 q/ha), net return (Rs 364973/ha) and B:C ratio (3.78) were recorded with foliar spray of zinc sulphate @0.5 per cent at 30 & 45 DAT. The reduced neck thickness (0.70, 0.73 & 0.72 cm) was recorded on 01st Januarytransplanting, Bhima Shakti cultivar and foliar spray of zinc sulphate @ 0.5 per cent at 30 & 45 DAT, respectively.
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