Enhancement of Source-Sink Relationship in Blackgram (Vigna Mungo (L.) Hepper) Through Foliar Application Of Salicylic Acid and Boron

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K. VISHNU PRIYA*, A.R. NIRMAL KUMAR, V. UMAMAHESH AND K.V. HARIPRASAD

Department of Crop Physiology, S.V. Agricultural College, ANGRAU, Tirupati.

ABSTRACT

A field experiment was conducted during rabi, 2019 at dry land farm of S.V. Agricultural College, Tirupati to study the effects of foliar application of salicylic acid and boron in enhancing the source-sink relationship in blackgram (Vigna mungo (L.) Hepper) with ten treatments. Among the various treatments imposed T2 (Recommended dose of fertilizer (RDF) + foliar spray of salicylic acid @ 100 ppm at 25 (DAS) days after sowing) recorded highest dry matter partitioning efficiency of 31.76 per cent and 46.49 per cent in pods at 60 DAS and harvest respectively. Similarly, treatment T2 recorded highest SPAD chlorophyll meter readings at 30 DAS (48.2) and 60 DAS (48.69), number of pods plant-1 (24.32), number of seeds pods-1 (8.03), test weight (54.40 g) and seed yield (801.66 kg ha-1). Whereas, T7 (RDF + foliar spray of boron 100 ppm at 25 and 45 DAS) recorded lowest values for dry matter partitioning (27.23%) at 60 DAS, SPAD (37.29), number of pods plant-1 (10.46), test weight (41.26 g) and seed yield (500 kg ha-1).

KEYWORDS:

Boron, Blackgram, Salicylic acid, SPAD

 

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