Abstract
The present investigations entitled “Impact of nitrogen and spacing on the growth and yield of okra” was carried out during spring summer season 2015. The applications of nitrogen at 100 kg/ha recorded higher yield attributes of the number of nods per plant, leaves per plant, internodes length, plant height, pod length, number of pods per plant, fruit yield per plant and total green pod yield per hectare. Nitrogen application upto125 kg/ha significantly decrease the days to 50% flowering. The pod weight, pod length, number of nodes per plant, number of pods per plant, fruit yield per plant and total green pod yield per hectare increased higher with the optimum plant to plant spacing of 15 cm. The data revealed the interaction between nitrogen level and plant density was present in case of plant growth and yield contributing characters of okra. Although the highest level interaction of 100 kg N/ha with plant to plat spacing 15 cm produced the high number of nods per plant, pod weight, pod length, number of pods per plant, pod yield per plant and total green pod yield per hectare and the days to 50% flowering decreased was recorded with 125 kg N/ha and plant to plant spacing 20 cm. The highest gross return (Rs.94080) and net return (Rs.84621.3) were obtained from N125S20.
Highlights
Okra, Ablemoschus esculentus (L) Moench commonly known as lady’s finger
The data in revealed that the effect of nitrogen, the treatment N100 produced significantly maximum plant height (92.1 cm) as compared to treatment N75 (84.1 cm) and it was found at par with nitrogen level N125 (92.4cm)
The favorable effect of spacing and nitrogen in promoting the growth of plant in terms of height of plant might be due to the fact that, closer plant spacing have higher plant density which creates competition among the population for light and resulted into increased in plant height
Summary
Ablemoschus esculentus (L) Moench commonly known as lady’s finger. Bamy, Bamia (Arabic) (Aldigawi, 1996), Bhindi (India), Ilash (Nigeria) Shigidi, A.I, 1994), belongs to the family Malvaceae. The productivity of Okra (NHB, 2014) in India is higher (11.6 tonnes ha-1) than world average productivity (7.35 tonnes ha-1) but lower than that of Egypt (15.70 tonnes ha-1). This is because of low yield due to frequent attacks of pests and diseases, especially the fruit and shoot borer and yellow vein mosaic virus (YVMV) according to Journal of Agricultural Technology (2012). Depletion and or shortage of N indicate that either the crop will not able to maintain its leaf area expansion rate or cannot maintain its leaf and plant N concentration Either of this will have effects on Crop growth and production of economic products.
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