Optimizing Plant Geometry and Nutrient Management for Grain Yield and Economics in Irrigated Greengram

Murugesan Mohana Keerthi; Rajagopalan Babu; Mani Joseph; Rajiah Amutha

doi:10.4236/ajps.2015.68119

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AJPS> Vol.6 No.8, May 2015

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Optimizing Plant Geometry and Nutrient Management for Grain Yield and Economics in Irrigated Greengram

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DOI: 10.4236/ajps.2015.68119 3,874 Downloads 4,926 Views Citations

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Murugesan Mohana Keerthi^*, Rajagopalan Babu, Mani Joseph, Rajiah Amutha

Affiliation(s)

Department of Agronomy, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Killikulam, Tuticorin, Tamil Nadu, India.

ABSTRACT

Greengram (Vigna radiata L.) is important pulse crop in India. The yield and economics were in-creased by optimization of plant geometry and nutrient management under irrigated condition. The field experiment was conducted during Rabi season of November 2013 to January 2014 at Tamil Nadu Agricultural University, Agricultural College and Research Institute, Killikulam. An experiment was laid out in randomised block design and replicated thrice and the test variety of the crop greengram (CO 6) was used. The plant geometry of 30 × 30 cm, 25 × 25 cm and 30 × 10 cm was adopted. The Soil Test Crop Response (STCR) based fertilizer application, RDF, FYM and ZnSO4 was applied in soil as basal. The foliar spray of Pulse Wonder and Pink-pigmented facultative methylotrophs (PPFM) spray was done at one week after flowering and 1% KNO3 at 50 per cent flowering. Adoption of planting geometry of 30 × 30 cm, application of RDF, 12.5 t of FYM and 25 kg ZnSO4 as basal and foliar spraying of 1% KNO3 at 50 per cent flowering recorded higher dry matter production of 2865 kg·ha^-1 and yield attributes viz., number of pod clusters plant^-1 (10.34), number of pods plant^-1 (53.40), number of seeds pod^-1 (13.23), pod length (8.77 cm) and seed test weight (3.42 g). Higher grain yield of 1775 kg·ha^-1, haulm yield (2920 kg·ha^-1), harvest index (0.38), net return (57,806 Rs·ha^-1) and B:C ratio (2.43) were associated with the treatment comprising of 30 × 30 cm spacing, application of RDF, 12.5 t of FYM and 25 kg ZnSO4 as basal and foliar spraying of 1% KNO3 at 50 per cent flowering.

KEYWORDS

Greengram, Plant Geometry, Nutrients, Yield

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Keerthi, M. , Babu, R. , Joseph, M. and Amutha, R. (2015) Optimizing Plant Geometry and Nutrient Management for Grain Yield and Economics in Irrigated Greengram. American Journal of Plant Sciences, 6, 1144-1150. doi: 10.4236/ajps.2015.68119.

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