Agrochemically useful and structurally important, functionally rich tricyclic-oxadiazines were synthesized in very good yields with excellent diastereoselectivities through a catalytic [3 + 3]-cycloaddition from the readily available p-quinols, azomethine imines, and a catalytic amount of Brønsted base (KOtBu).

A novel phosphine-catalyzed umpolung [3 + 2]-annulative dimerization of ynones was developed to furnish functionally rich 5-alkylidene-2-cyclopentenones. In this protocol, ynone acts as both C2 and C3 synthons, which undergo [3 + 2]-annulative dimerization.

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SUMMARY :A survey was carried out during May, 2015 from 50 rice growing farmers to identify the farmer's practice of dose and time of P application.Based on the survey data, the average of 50 farmers P fertilizer dose (85 kg P 2 O 5 ha -1 ) was fixed as 100 % farmer's dose and majority of the farmers practice i.e. two equal splits at basal and at top dressing at early tillering stage (14 to 20 DAT) was decided as farmer practice of splitsfor conducting field experiment on rice in P accumulated soil. The field experiment was consisting of twelve treatment combinations with six levels of phosphorus (100, 75 and 50 % farmers dose and 100, 75 and 50 % RDP) and its time of application (Farmer practice of split application and basal application). As part of this investigation,The crop has given good response to application of 100 % farmers dose of P (85 kg P 2 O 5 ha -1 ) but at the same time which was found to be on par with the application of 100 % RDP (60 kg P 2 O 5 ha ) and 75 % RDP (45 kg P 2 O 5 ha -1 ). This can be inferred as saving of P fertilizer to rice from current recommended dose and farmer's dose in soils having higher initial available P. With respect to time of P application, P uptake by the grain was significantly higher in split application than the treatment receiving basal P, although this had no significant influence on the increase in grain yield of rice.How to cite this article : Archana, K., Reddy, T. Prabhakar, Anjaiah, T. and Padmaja, B. (2017). Effect of dose and time of application of phosphorus on changes in phosphorus uptake pattern and yield of rice grown on P accumulated soil. Agric. Update, 12 (TECHSEAR-4): 960-965;

Although there are a number of reports on the effect of yoga training on pulmonary functions, very few studies have been undertaken on the effect of yoga training on respiratory pressures and handgrip endurance. Hence the present work was planned to study the effect of yoga training on hand grip strength (HGS), hand grip endurance, forced expiratory volume (FEV), forced expiratory volume in 1 s (FEV 1 ) and peak expiratory fl ow rate (PEFR), 20 school children in the age group of 12-15 years were given yoga training (asanas and pranayama) for 6 months, 20 age and gender matched students formed the control group. Yoga training produced statistically signifi cant (p < 0.05) increase in HGS and HE, MEP, MIP, FEV, FEV 1 , PEFR also increased signifi cantly (p <0.01) after the yoga training. In contrast, the increase in these parameters in the control group was statistically insignifi cant. One study shows that yoga training for 6 months improves lung function, strength of inspiratory and expiratory muscles as well as skeletal muscle strength and endurance. It is suggested that yoga be introduced at school level in order to improve physiological functions, overall health and performance of students.on 30 April 2019 by guest. Protected by copyright.