Performance of Linseed (Linum usitatissimum L.) Cultivars to Different Ratios and Levels of Nitrogen and Phosphorus Fertilizers Under Irrigated Conditions
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Date
2011
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UAS, Dharwad
Abstract
A field experiment to study the performance of linseed (Linum
usitatissimum L.) cultivars to different ratios and levels of nitrogen and phosphorus
fertilizers was conducted at MARS, Dharwad in medium black clay soil during
rabi 2009-10 under irrigated conditions.
Two linseed cultivars (Indira Alsi 32 and T-397) were raised with two ratios at
five different levels of nitrogen (N) and phosphorus (P2O5) fertilizers at a common
potassium fertilizer rate (20 kg K2O ha-1).
Cultivar Indira Alsi 32 produced higher seed yield (1155 kg ha-1) compared to
cv. T-397 (1066 kg ha-1). Cultivar Indira Alsi 32 recorded higher seed weight plant-1,
weight of capsules plant-1 and total dry matter production (TDMP) compared to
cultivar T-397. Cultivar Indira Alsi 32 recorded higher oil content and oil yield
(37.04 % and 427 kg ha-1) when compared to cultivar T-397 (35.6 % and 379 kg ha-1).
Application of nitrogen and phosphorous fertilizers at N/P ratio of 2.67 either
with lower or higher levels of N and P fertilizers produced 29.62 % to 35.55 % higher
yield over N/P ratio of 0.00 and 0.89 % to 6.89 % higher yield over N/P ratio of 2.00
either with lower or higher levels of N and P fertilizers. TDMP plant-1 and its
accumulation in different plant parts decreased as the ratios and levels of N and P
fertilizers decreased. The uptake of nutrients (N, P2O5 and K2O kg ha-1) increased
with increase in the ratios and levels of nitrogen and phosphorous fertilizers. Higher
seed yields were observed at N/P ratio of 2.67 with higher level of N and P fertilizers.
Interaction of cultivars Indira Alsi 32 and T-397 with the application of different
ratios and levels of nitrogen and phosphorus fertilizers with respect to gross returns,
net returns and B:C ratio recorded non-significant differences.
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Keywords
Agronomy