Formerly International Journal of Basic and Applied Agricultural Research

Seed and oil yield of bidi tobacco (Nicotiana tabacum L.) varieties as influenced by planting geometry and fertilizer levels under rainfed vertisols

S. JAFFAR BASHA, P. PULLI BAI, S. KASTURI KRISHNA and C. CHANDRASEKHARA RAO
Pantnagar Journal of Research, Volume - 18, Issue - 3 ( September-December, 2020)

Published: 2020-12-31

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Abstract


A field experiment was undertaken at Regional Agriculture Research Station, Nandyal, Andhra Pradesh during 2018-20 on rainfed vertisols to study the effect of different planting geometry, fertilizer levels on seed and oil yield in different bidi tobacco (Nicotiana tabacum L.) varieties. The treatments consisted of two planting geometry (75 cm x 75 cm and 60 cm x 60cm) as first factor, two fertilizer levels (100 % RDF - 110 N+70 P2 O5 +50 K2 O kg ha-1and 150 % RDF-165 N+105 P2 O5 +75 K2 O kg ha-1) as second factor and three bidi tobacco varieties (A119, Nandyal Pogaku-1 and ABD 132) as third factor tested in a factorial randomized block design with three replications. Two years pooled data revealed that significantly higher seed yield (444 kg ha-1), oil yield (143.3 kg ha-1), cured leaf yield (2023 kg ha-1), lower leaf length (34.0 cm), leaf width (13.6 cm) and capsules per plant (547) were observed with plant geometry of 60 cm x 60 cm. Higher seed yield (446 kg ha-1), oil yield (141.9 kg ha-1), leaf length (37.1 cm), leaf width (15.4 cm) and cured leaf yield (2078 kg ha-1), capsules per plant (647) were recorded with application of 150% Recommended Dose of Fertilisers (RDF) (165 N+105 P2 O5 +75 K2 O kg ha-1) than 100% RDF. Significantly higher seed yield (459 kg ha-1) and oil yield (148.1 kg ha-1) were recorded with A119 than Nandyal Pogaku 1 and ABD 132. ABD 132 recorded higher plant height (146.3 cm), leaf length (37.5 cm), leaf width (15.9 cm) and cured leaf yield (2116 kg ha-1). Higher number of capsules per plant (675) was observed in Nandyal pogaku 1. A119 recorded higher seed yield (532 kg ha-1) and oil yield (173.4 kgha-1) when planted at 60 cm x 60 cm with application of 150% RDF (165 N+105 P2 O 5 +75 K2 O ha-1). ABD 132 recorded lower seed yield (229 kg ha-1) and oil yield (72.1 kg ha-1) when planted at 75 cm x 75 cm with application of 100% RDF (110 N+70 P2 O 5 +50 K2O ha-1). The levels of plant geometry and fertilizer levels had non-significant effect on leaf chemical constituents.


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