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.
Highlights
Pulses play an important role in Indian agriculture
Spraying Pink-pigmented facultative methylotrophs (PPFM) is said to influence the crop growth by producing plant growth regulators like zeatin and related cytokinins and auxins [5]. Keeping these views in mind, the present investigation is formulated with the following objectives 1) To find out the optimum plant geometry for irrigated greengram; 2) To find out the suitable nutrient schedule, foliar application of nutrients and growth regulators for irrigated greengram; 3) To work out the economics for optimum plant geometry and nutrient management for irrigated greengram
Wider plant spacing of 30 × 30 cm, application of RDF, 12.5 t of Farm Yard Manure (FYM) and 25 kg of ZnSO4 as basal and spraying of 1% KNO3 at 50 per cent flowering (T10) was found to accumulate more dry matter and it was on par with the treatment comprising of 30 × 30 cm plant spacing, application of RDF, 12.5 t of FYM and 25 kg of ZnSO4 as basal (T9) at all the observed stages of crop growth (Table 1)
Summary
Pulses play an important role in Indian agriculture. India is a premier pulse growing country and forms an integral part of cropping system of the farmers all over the country. Area under greengram in India is 3.80 million hectares with an annual production of 1.1 million tonnes. Spraying Pink-pigmented facultative methylotrophs (PPFM) is said to influence the crop growth by producing plant growth regulators like zeatin and related cytokinins and auxins [5]. Keeping these views in mind, the present investigation is formulated with the following objectives 1) To find out the optimum plant geometry for irrigated greengram; 2) To find out the suitable nutrient schedule, foliar application of nutrients and growth regulators for irrigated greengram; 3) To work out the economics for optimum plant geometry and nutrient management for irrigated greengram
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