Effect of genotype, irrigation and fertility on yield, nitrogen- recovery and its use efficiency in spring sunflower (Helianthus annuus)
DOI:
https://doi.org/10.59797/ija.v44i1.3481Keywords:
Abstract
A 2-year field study was conducted with spring sunflower (Helianthus annuus L.) at Hisar, comprising 2 genotypes, 3 levels of irrigation and 5 levels of nitrogen + phosphorus. Sunflower hybrid MSFH 8 gave higher seed yield, N uptake, apparent N recovery as well as N-use efficiency. Scheduling irrigation at 0.6 ID :CPE ratio was better than other irrigation schedules for seed yield and N uptake at harvest. With each increment of N + P,O, level from 0 + 0 to 120 + 60 kglha, there was a significant increase in the seed yield as well as N uptake. Apparent recovery of applied N and N- use efficiency were higher when irrigation was scheduled at 0.6 ID :CPE ratio. Appli- cation of 30 + 15and 60 + 30 kg N + P,O,/ha recorded higher apparent N recovery and N-use efficiency.References
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Sarmah, P.C., Katyal, S.K. and Verma,O.P.S. 1992.Growth and yield of sunflower (Helinnrhits nnnuirs L.) vari-eties in relation to fertility levels and plant popula- tion. Indinn JournnloJAgronorny 37 :385-389.
Vivek. 1990. 'Water use studies on suntlower underdiffer- ential nitrogen levels in double cropping system.' Ph.D. Thesis Himachal Pradesh Krishi Vishvidhalaya, Palampur.Beri, V. and Brar, S.S. 1978. Effect of nitrogen on avail- ability of'nitrogen and yield ofwheat in salt-affected soils. SoilScience 126 :330-338.
Evans, L.T. and Wardlaw, I.S. 1976. Aspect of the com- parative physiology ofyield in cereals.'~dvcrrict?ss iri Agrononiy 28 :301-350.
Kathuria, M.K., Singh, Harbir, To~ik, D.S. and Agarwal,
S.K. 1995. Effect ofdates ofsowingacid fe~iility lev- els on seed and oil yield ofsunflower (Helinnrhirs nnnuus L.). Joirrnnl of Resnrcll. Hnrynnn Agricul- turn1 University, Hisnr 26 (I) :39-42,
Sarmah, P.C. 1991. 'Effect of plant population and nitro- gen and phosphorus levels on growth, seed and oil yield of sunflower (Helinnflz~rs nnnrrlrs L.).' Ph.D. Thesis, Chaudhary Charan Singh Haryana Agricul- tural University, Hisar.
Sarmah, P.C., Katyal, S.K. and Verma,O.P.S. 1992.Growth and yield of sunflower (Helinnrhits nnnuirs L.) vari-eties in relation to fertility levels and plant popula- tion. Indinn JournnloJAgronorny 37 :385-389.
Vivek. 1990. 'Water use studies on suntlower underdiffer- ential nitrogen levels in double cropping system.' Ph.D. Thesis Himachal Pradesh Krishi Vishvidhalaya, Palampur.
