Studies on terminal heat mitigation in indian musterd(Brassica Juncea L.)
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Date
2021-07-31
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ANDUAT,Kumarganj,Ayodhya
Abstract
The present experiment entitled “Studies on terminal heat mitigation in Indian
mustard (Brassica juncea L.” was taken up during Rabi 2020-21 at Students Instructional
Farm of Acharya Narendra Deva University of Agriculture and Technology (Narendra
Nagar) Kumarganj, ayodhya (Uttar Pradesh). The experiment was conducted on Indian
mustard variety NDR-8501 were sown in three different date of sowing viz. D1 15
October, 30 October and 15 November with application of heat induces chemicals. The
experimental site was characterized by 0.33 % organic carbon, 180 kg available N/ha,
11.80 available kg/ha P2O5, 180 kg available K2O/ha, 8.8 pH and 0.96 dS/m electrical
conductivity (EC).
The days to 50% flowering , Plant height (cm), main raceme length (cm), Number
of siliqua on main raceme, number of unfilled siliqua on main raceme, number of primary
branches per plant, number of secondary branches per plant, number of total branches per
plant, number of seeds per siliqua, 1000-seed weight (gm), germination %, seedling length
(cm), vigour index, biological yield per plant (gm), seed yield per plant (gm) and harvest
index were recorded following ISTA rules.
The result was observed significantly induced most of Quantitative and qualitative
traits like Plant height (cm), number of primary branches per plant, number of secondary
branches per plant, number of seeds per siliqua, seed yield, germination %, seedling length
(cm) and vigour index in D2 (30 October). In case of heat inducing chemicals the higher
growth components, seed yield and its contributing traits were recorded when applying of
salicylic acid (800ppm) followed by salicylic acid (400ppm) and KNo3 (0.3%). Interaction
effect between date of sowing and heat inducing chemicals was also observed. As the
sowing delayed, seed yield and its contributing traits was poor performance due to terminal
heat stress. Thus by applying heat inducing chemicals, the seed yield could be substituted
even delaying in sowing by the month of November and vice-versa.
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