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Ngullie E.,Central Institute of Horticulture | Srivastava A.K.,National Research Center for Citrus
Communications in Soil Science and Plant Analysis | Year: 2015

Fifteen citrus varieties (four varieties of limes/lemons, three varieties of mandarins, and eight varieties of sweet oranges) were tested in a row-to-row multireplicate field experiment on Typic Rhodustalf. Pre-bearing growth behavior of different citrus varieties showed a significant difference (P ≤ 0.05) with respect to canopy volume (1.221 m3 with Bearss lemon and 0.220 m3 with Cara Cara Navel) governed by changes in different rhizospheric properties (soil-available nutrients, soil microbial population, and soil microbial biomass nutrients). Response in canopy volume was more governed by soil microbial biomass nutrients [carbon (Cmic), nitrogen (Nmic), and phosphorus (Pmic)] followed soil microbial population and soil available nutrients in decreasing order. Indices developed through diagnosis and recommendation integrated system further helped in partitioning interrhizosphere nutrient deficiencies. These studies suggested that (i) biological properties of rhizosphere soils of limes and lemons were of much superior quality and (ii) rhizospheric biological properties are transformed according to plant species and variety. Copyright © Taylor & Francis Group, LLC.

Sema A.,Central Institute of Horticulture | Maiti C.S.,Nagaland University | Dietholhou,Nagaland University
Acta Horticulturae | Year: 2011

North-Eastern India, comprising eight states with a total geographical area of 2.62 million km2, has a high potential for pineapple cultivation. The region has fertile and organically rich soils, ample rainfall, water resources and great climatic diversity supporting diverse cropping possibilities. With the progress already made and the potentials of the region already demonstrated as a result of adopting modern technological approaches viz. staggering technique, high density planting (HDP), and organic cultivation and certification pineapple yield and quality are better and cultivation of pineapple in the region has good potential. The government of India, having identified the potential of the North East region for horticultural crops, started a project 'Horticulture Technology Mission' in the year 2001. This resulted in 140.7% increase in the area and production of pineapple. The region produces more than 40% of the total pineapple of the country and 90 to 95% of the produce is organic. The common cultivars grown are 'Giant Kew' and 'Queen'. Pineapples produced from this region are qualitatively different and are said to be among the "Best in the world as they are very sweet (high TSS) and have less fiber". In the context of tremendous national and global market demand for organic pineapples as well as low volume of such products, this area of India is an ideal area to explore for pineapple cultivation. The region being an agrarian society with an average of 80% tribal population, this venture will result in a breakthrough of social empowerment of the tribal people of the North East states of India.

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