Influence of Planting Time on Yield and Quality of Spinach (Spinacia oleracea) Varieties

Abstract

The present investigation was conducted during rabi season of 2020 at Experimental Farm of Vegetable Sciences, Faculty of Agricultural Sciences, DAV University, Jalandhar to study the effect of different dates of sowing viz., 9 October, 24 October and 8 November and three cultivars, Supriya, All Green, Punjab Green on growth, yield and quality of spinach. The experiment was conducted in a Factorial Randomized Block Design with three replications. Observations were recorded on days to emergence, days to complete germination, plant height (cm), number of leaves per plant, leaf area (cm2), fresh yield per plot, total fresh yield per hectare, chlorophyll a, chlorophyll b, total chlorophyll, days to 50% bolting, number of branches, days to harvesting, seed yield per plot and yield per hectare. Analysis of variance (ANOVA) revealed significant differences among date of sowings, cultivars and interaction effect of dates of sowing and cultivars for all characters under study. It was observed that plants sown on 9 October resulted in superior performance for most of the traits studied. Among cultivars, desirable results were observed in All Green. Considering the interaction of date of sowing and cultivars it was concluded that All Green sown on 9 October can result in superior performance with respect to growth, yield and quality parameters of spinach.

Effect of transplanting dates on growth, yield and quality of broad leaf mustard (Brassica juncea L. var. rugosa) varieties at Rampur, Chitwan, Nepal

“…than other transplanting dates. There is increased in leaf area with earlier planting with longer growing season due to maximal photosynthesis at longer growth period while in late sowing the growth decreased due to decrease in temperature at early stage causing cessation(Kaur et al, 2022). This result is in accordance with finding ofNaxrul and Zannat (2020) who reported that increase in leaf length (53.42 cm) and leaf width (23.99 cm) when sown on November 15.…”

“…Significantly, highest leaf was recorded on second transplanting (November 9) of 28.92 t ha -1 . These results are due to the better germination and maximum photosynthesis surface (number of leaves per plant) in earlier sowing resulting to accumulation of maximum fresh weight as compared to late sowing (Kaur et al, 2022). Porter (2005) reported that late sown Indian mustard when exposed to high temperature and high atmospheric evaporative demands throughout the reproductive phase resulted in forced maturity, increased senescence and reduced output.…”

“…It requires cool weather before flowering and warm and dry condition during flowering and seed maturation (Singh & Bhandari, 2015). As a result, the plant bolts and flowers during the long days, especially when they are combined with temperatures above 25°C, which is detrimental to the production of leaves (Kaur et al, 2022). Due to climate change or very early or late planting for certain crops, the production potential may be hampered (Naxrul & Zannat, 2020).…”

“…Whereas, the physical factors mainly climatic factors cannot be manipulated under field conditions but sowing time can be adjusted to meet the optimum thermal requirements of crop at various phenological stages to avoid any adverse effect on the yield of mustard (Gupta et al, 2017). Thus, altering the timing of sowing is one of the few strategies known for adapting the crop to cope with temperature fluctuations (Kaur et al, 2022). The genotypes and sowing time of the mustard have an impact on its productivity (Meena et al, 2017).…”

Modeling and Forecasting of Spinach Production in Bangladesh

“…The Nepalese Journal of Statistics, Vol. 7, 1-18 K. R. Das, M. Jahan, L. R. Barman & P. Burman Barman analysis of variance technique was used in order to investigate the impact that planting time had on the production and freshness of spinach (Pathania et al, 2022). There is also some research done concerned with environmental issues.…”