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A pot culture study was conducted in 20 acidic soils of Senapati District of Manipur, India during rabi season of 2013-14 to estimate the critical limit of P in soil and pea plant for predicting the response of pea (Pisum sativum L.) to P application as well as to study the effect of P application on dry matter yield and uptake of nutrients in pea crop. The experimental soil was acidic in nature, electrical conductivity of the soil was in safe limit for crop growth. The organic carbon status was almost high and soil was clay in textural class. Pot culture studied showed that the application of phosphorus @ 60 kg P 2 O 5 ha -1 significantly superior (85 %) of the studied soils to any other treatments and 40 kg P 2 O 5 ha -1 was significantly (15 %) to the total soils in dry matter yield of Pea variety Arkel. The critical limit of the P concentration in the pea was found 0.42 per cent. It was revealed that the critical level of phosphorus in the soils for growing of pea plants varied with the methods of phosphorus extraction. The critical level of soils ranged from 14.30 to 25 kg P 2 O 5 ha -1 depending upon the methods of phosphorus extraction.

An experiment was conducted with a view to find out the best grafting height and scion length and the reciprocal influence of the rootstock and scion on grafted citrus cultivar Nagpur mandarin at Horticultural Research Farm, Andro, College of Agriculture, Central Agricultural University, Imphal during 2014 and 2015. The plant material consisted of Nagpur Mandarin as scion and Rough Lemon seedlings as rootstock. The scion with three lengths (5 cm, 10 cm and 15 cm) were tried at three different heights (10 cm, 15 cm and 20 cm) from the ground level, comprising 9 treatment combinations (3x3). The two-factor experiment consisting of 9 treatment combinations was laid out in Factorial Randomized Block Design (FRBD) with three replications. Minimum time required for healing of the graft union (24.28) was found non-significant while the growth characteristics such as leaf area, internodal length, root length and diameter, fresh and dry weight of shoots and roots were significantly affected by grafting height and scion length interaction at the end of the observation i.e., 360 days after grafting. The treatment combination S 3 G 2 (15 x 15 cm) was found to produce maximum values while the treatment combination S 1 G 1 (5 x 10 cm) was found to produce minimum values.

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