A field experiment was conducted in the Regional Research Technology and Transfer Station (RRTTS), Chiplima, Sambalpur for two years to study the effect of different sources and levels on growth, yield and uptake of sulphur in onion (cv. Nasik Red). The treatment consists of two sources of sulphur (elemental gromor sulphur and gypsum) and three levels of sulphur (20, 35 and 50 kg S ha-1) from both the sources along with control by adopting RBD with three replications. The result showed that yield attributes like plant height, bulb length, bulb diameter, neck length and average weight of bulb were increased significantly up to 35 kg S ha-1 and thereafter, declined in both the sources of sulphur. The maximum bulb yield was obtained with application of sulphur at 35 kg ha-1 and it was significantly superior to no sulphur and 20 kg S ha-1 and at par with 50 kg S ha-1 in both the sources of sulphur. Application of 35 kg S ha-1 produced an additional bulb yield of 3.8 t ha-1 in gypsum and 5.4 t ha-1 in gromorsulphur over control. The sulphur use efficiency of the crop showed an increasing trend up to 35 kg S ha-1 and thereafter decreased in both the sources. The highest net return and benefit cost ratio were achieved with the application of 35 kg S ha-1 in both the sources of sulphur. Comparing two sulphur sources, gromorsulphur resulted in higher growth, bulb yield, sulphur use efficiency and economics in comparison to gypsum.
Continuous mono-cropping of rice has resulted in decline or stagnation of yield output due to the occurrence of multiple nutrient deficiencies and worsening of soil physicochemical properties accompanying increased pressure of insect pests and diseases. The basic concept of integrated nutrient management (INM) is maintenance or adjustment of soil fertility and supply of plant nutrients to an optimum level for sustaining the desired crop productivity through optimisation of benefits from all possible sources of plant nutrients in an integrated way. Augmenting a rice-based cropping system with pulses is a prevalent and indigenous cropping system under rainfed conditions. Considering the above facts, experiments were conducted to evaluate the impacts of integrated nutrient management on productivity of aromatic rice–greengram cropping system and nutrient balance of the post-harvest soil for agricultural sustainability under rainfed conditions in two consecutive years (2017–2018 and 2018–2019) with six main plots and three subplots. The experimental findings revealed that the treatment comprised of 50% recommended dose of fertiliser (RDF) through chemicals + 50% recommended dose of nitrogen (RDN) through farmyard manure (FYM) increased the plant height, tillers, dry matter accumulation, leaf area and leaf area duration, and yield parameters in short grain aromatic rice. Similarly, preceding application of 50% RDF + 50% RDN through FYM to rice and further application 75% RDF + Rhizobium+ phosphate solubilizing bacteria (PSB) to greengram increased the growth characteristics and yield parameters—such as pods/plant, seeds/pod, grain yield, stover yield, and harvest index—in greengram. It was concluded that the treatment consisting of 50% RDF (chemical fertiliser) + 50% RDN (FYM) to rice and 75% RDF + Rhizobium + PSB to greengram increased the productivity of the rice–greengram cropping system. Furthermore, the adoption of INM has positively impacted post-harvest soil nutrient balance.
To study the effect of different levels of irrigation and nutrient management practices on yield and water use efficiency of tomato (cv. Utkal Kumari) a field experiment, with three irrigation schedules and four nutrient management practices, was conducted in the Regional Research Technology and Transfer Station (RRTTS),Chiplima, Sambalpur for three years. Three years pooled mean of tomato fruit yield indicated that highest fruit yield of 18.48 t ha -1 was observed with IW:CPE of 1.2 irrespective of different nutrient management practices. Highest pooled mean fruit yield of 19.07 t ha -1 was recorded with application of 25% organic+75% inorganic which was significantly superior to 50% organic+50% inorganic (18.26 t ha -1 ), 100% organic (16.01 t ha -1 ) and 100% inorganic (17.21 t ha -1 ) irrespective of different irrigation levels. Highest mean water use efficiencies of 533.45 kg ha -1 cm -1 and 469.47 kg ha -1 cm -1 were observed with IW:CPE of 0.8 and application of 25% organic+75% inorganic fertilizer respectively. Among the irrigation treatments highest net return (` 56,136/-) and benefit-cost ratio (2.03) were observed with 1.2 IW:CPE, whereas the highest net return (` 61,560/-) and benefit-cost ratio (2.16) were observed with 25% organic+75% inorganic fertilzer . Thus, integrated use of 25% organic along with 75% inorganic fertilizer as per recommended dose of nutrient with an irrigation scheduling at 1.2 IW:CPE produced highest fruit yield of tomato as compared to other treatments. The fruit yield per hectare was significantly correlated to all other yield attributing parameters except days to first harvest.
A study was undertaken at Regional Research and Technology Transfer Station, Chiplima, Sambalpur, Odisha on rice var. khandagiri during summer season of 2011, 2012 and 2013 in split plot design with three irrigation schedule (main plots) and three date of transplanting (sub plots). Experimental results indicated that the irrigation schedules at one day after disappearance of ponded water (DPW) recorded the highest grain yield of 3.07 t ha-1 which was at par with irrigation schedule at 2-days after DPW. Both the irrigation schedules were significantly superior over 3-days after DPW. The date of transplanting on 15th January produced highest grain yield (3.11t ha-1) which was significantly superior to other transplanting date on 30th January and 15th February. Highest water use efficiency was observed with irrigation schedule at 3-days after DPW (43.7 kg ha-cm-1) and transplanting on 15th January(43.2 kgha-cm-1). The treatment that received irrigation schedule at 1-day after DPW registered the highest dry matter heat use efficiency (3.62 kg ha-10C day-1) and grain yield heat use efficiency(1.84 kg ha-10C day-1).The transplanting on 15th January produced highest dry matter heat use efficiency(3.83 kg ha-10C day-1) and grain yield heat use efficiency(2.05 kg ha-10C day-1) which was significantly superior to other transplanting dates of 30th January and 15th February.
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