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EFFECT OF BORON, COPPER, MANGANESE AND ZINC SALTS ON DROUGHT RESISTANCE OF GRAIN SORGHUM ( Sorghum bicolor (L.) Moench)

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Title EFFECT OF BORON, COPPER, MANGANESE AND ZINC SALTS ON DROUGHT RESISTANCE OF GRAIN SORGHUM ( Sorghum bicolor (L.) Moench)
 
Creator NAGESH, KESARI
 
Contributor NARASIMHA RAO, C.L
 
Subject EFFECT, BORON, COPPER, MANGANESE, ZINC, SALTS, DROUGHT, RESISTANCE, GRAIN, SORGHUM,
 
Description Sorghum is a dual purpose crop next in
importance to wheat, rice and maize. It is often the
principal means of survival in semi-arid tropics. Most
of the sorghum growing areas are without any
irrigation. Seed treatment and foliar spray with
boron, copper, manganese and zinc solutions were
undertaken to know the effect of these elements on
drought resistance in grain sorghum during the rabi
season (October 1988 to Febraury 1989) as vast areas of
sorghum are raised mainly under rainfed conditions with
limited water supply. Sorghum can be· made more
productive under. drought situations by increasing sink
size, squrcestrens-tl\ and their activity with the use of B,
Cu, Mn and Zn nutrient elements.
B, Cu, Mn and Zn increased plant height,
n·umber of leaves r leaf dry weight, stem dry weight,
total dry weight and grain yield. These nutrients
increased CGR and decreased NAR. B, Cu, Mn and Zn
"'
treatment increased the flag leaf area, LAI, and LWR
under water stress. Besides they improved drought
resistance by promoting drought avoidance characters
like epicuticular wax and leaf water potential. The
chlorophyll content increased while proline and sugars
decreased.These results clearly indicate the importance
of B, Cu, Mn and zn nutrition in sorghum raised
under stress conditions as they were found to
increase grain yield. Hence, in order to get higher
yields of sorghum in water stress environments seed
soaking and foliar spray with salt solution of B, Cu,
Mn and Zn may be done besides applying major nutrients.
B, Cu, Mn and Zn elements significantly
increased the yield by increasing grain growth rate,
panicle growth rate, grain number per ear and harvest
index both under stress and nonstress treatments.
 
Date 2016-08-06T14:37:34Z
2016-08-06T14:37:34Z
1989
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/71298
 
Language en
 
Relation D3122;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY, RAJENDRANAGAR, HYDERABAD