Influence of Plant Densities and Age of Seedlings on Dry Matter Partitioning and Grain Yield Potential of Transplanted Rice (Oryza sativa L.)

Abstract

A b s t r a c t A r t i c l e I n f oAn experiment was carried out during kharif, 2013 at College Farm, Rajendranagar, Hyderabad. with three plant densities (1 seedling hill -1, 3 seedlings hill -1 , 5 seedlings hill -1 ) as factor one and four age of seedlings (15 days old seedlings, 25 days old seedlings, 35 days old seedlings, 45 days old seedlings) as factor two in randomized block design, replicated thrice. Experimental results showed 5 seedlings hill -1 was found to be significant to get more productive tillers (288) and grain yield (5817 kg ha -1 ) over 3 seedlings hill -1 and 1 seedling hill -1 due to more dry matter production (348, 793 and 1296 g m -2 ) at panicle initiation, heading and physiological maturity stages and dry matter partitioning as stem, leaf and grain (300, 242 and 754 g m -2 ) at physiological maturity stage respectively over 3 seedlings hill -1 and 1 seedling hill -1 . Among different age of seedlings significantly more productive tillers and grain yield was obtained with 25 days old seedlings over 15, 30 and 45 days old seedlings with more dry matter at panicle initiation, heading and physiological maturity stages and dry matter partitioning as stem, leaf and grain (330, 261 and 824 g m -2 ) at physiological maturity.

Studies of Farmer Participatory on Machine Transplanting of Rice

“…Machine transplanting ensures timely planting in the season and relieve women labor from drudgery with an additional net return of Rs 11000/ha (15.7%). These results are in accordance with Shukla et al [9], Vijayalaxmi et al [10].…”

Growth and Yield of Machine Transplanted Rice (Oryza sativa L.) as Influenced by Age and Number of Seedlings

“…Singh and Husain (1983) also reported increased rice growth parameters with planting of 25-30 days old seedlings and mentioned that younger seedlings had lower effective tiller rate and prone to mechanical damage when compared with higher aged seedlings. Vijayalaxmi et al, (2016) reported 25 days old seedlings as the optimum age as for higher DMP with highest partitioning towards panicle followed by stem and leaf.…”

“…Whereas, transplanting of 4 to 5 seedlings hill -1 resulted in production of weak panicles with less filled spikelets. Optimum plant density for higher DMP and grain yield would be 5 seedlings hill -1 which produced higher DM with highest partitioning towards panicle followed by stem and leaf (Vijayalaxmi et al, 2016).…”

Effect of Microclimate Modification on Growth and Yield of Basmati Rice under Punjab Conditions

“…Mahajan et al [43] reported that significantly more grains/panicle, higher test weight and grain yield were recorded when basmati rice was transplanted on 10 th July. [44,45]. A subsequent delay in transplanting i.e.20 th and 30 th July, resulted in reduced grain yield by 8.4 and 27.1 per cent respectively as compared to 10 th July transplanting.…”