Yield, quality and economics of FCV tobacco (Nicotiana tabacum) in relation to preceding crops and nitrogen fertilization in Vertisols
Year: 2001
Type: article
Abstract: A field experiment was conducted during 2001 -02 and 2002-03 at Rajahmundry in Andhra Pradesh with six treatments during rainy (kharif) season, viz. blackgram [Vigna mungo (L.) Hepper], rice (Oryza sativa L.), soybean [Glycine max (L.) Merr.], maize (Zea mays L.), green-leaf manuring with pillipesara [Vigna trilobata (L.) Verdc.] and fallow; and three N levels of 30, 45 and 60 kg Nlha, applied to FCV tobacco in winter (rabi) season. Short-duration maize and rice could successfully be grown before rabi tobacco, taking advantage of south-west monsoon rains. Among the cropping systems, green-leaf manuring-tobacco recorded significantly higher cured leaf (1.92 tlha), bright leaf (0.88 tlha) and grade index (1.39) of tobacco followed by fallow - tobacco, whereas lowest values of these yields were recorded in soybean-tobacco. Application of 60 kg Nlha offered significantly higher cured-leaf yield and grade index, and was comparable with that of 45 kg Nlha in respect of bright-leaf yield. Interaction effects of cropping systems and N levels revealed that FCV tobacco preceded by maize, blackgram, rice and soybean re- sponded up to 45 kg Nlha, whereas tobacco preceded by green leaf manuring and fallow responded up to 60 kg Nlha in the production of bright leaf. Maize - tobacco system recorded higher tobacco leaf-equivalent yield (2.25 tl ha). The chemical quality parameters of leaf like reducing sugars, nicotine and chlorides were within the accept- able range. Maize - tobacco and green leaf manuring - tobacco systems recorded higher net returns, whereas benefit : cost ratio was higher with green leaf manuring-tobacco and fallow-tobacco. Minimum broomrape (Orobanche cernua Loefl] infestation of 1.75% was recorded in FCV tobacco succeeding maize. It was concluded that maize - tobacoo accrued higher monetary returns, followed by green leaf manuring-tobacco system compared with fallow - tobacco.
Source: Indian Journal of Agronomy
Authors: S. KASTURI KRISHNA, S.V. KRISHNA REDDY, K. DEO SINGH, R. SUBBA RAO, P. HARISHU KUMAR, V. KRISHNAMURTHY
Institution: Central Tobacco Research Institute
Language: English
Subfield: Soil Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: bronze
OpenAlex ID: W2294916388