This division is useful to screen most N adept genotypes which maybe strongly submitted to rice growers to improve crop yield irrespective of use of extreme dose of N fertilizers. The unoriginal farming considerably depending on synthetic fertilizer recommendation has been double-put paint or finish on; yield increase but environmental concerns to a degree soil degradation, organic diversity. A Field experiment was conducted at PJTSAU, Hyderabad, Telanagana, India all along 2011-12 to evaluate the effectiveness of varying nitrogen (N) manure rates on growth and yield limits, along with NUE (Nitrogen Use Efficiency) accompanying two N levels 60 and 120 kg N ha-1 as main treatments and twenty six edible grain genotypes as sub situations. N nutrition influences the content of photosynthetic pigments, combining of the enzymes taking part in the carbon decline, formation of the sheath system of chloroplasts, etc. Photosynthetic rate raised from maximum tillering (18.41 m mol CO2 m-2 s-1) to flowering stage (22.24 m mol CO2 m-2 s-1) and written a decrease thereafter towards adulthood stage (13.23 m mol CO2 m-2 s-1). Application of appropriate level of N fertilization is a main objective to increase NUE by rice assortments. Among the genotypes, MTU-1001 recorded the maximum seed yield of 5021 kg ha-1 even under application of 60 kg N ha-1 with maximum NUE in 60 kg N ha-1 (83.68) and minimum in 120 kg N ha-1 (45.53). NUE acted not increase linearly with the amount of N use and higher N levels presented significantly lower NUE principles. N contributes to hydrogen accumulation in culms and leaf sheaths all the while the pre-heading stage and basic during the ripening stage of edible grain. Maximum yield can be attributed to maximum SCMR (SPAD Chlorophyll rhythm reading) principles, more photosynthetic rate, more tillers and panicles, more number of grains hill-1, maximum suffused grain allotment and minimum spikelet sterility.
Author(s) Details:
K. Rajesh,
Department of Crop Physiology, Professor Jayashankar Telangana State
Agricultural University, Hyderabad- 500 030, Telangana, India.
Ramesh Thatikunta,
Department
of Crop Physiology, Professor Jayashankar Telangana State Agricultural
University, Hyderabad- 500 030, Telangana, India.
D. Saida Naik,
Department of Crop Physiology, Professor Jayashankar Telangana State
Agricultural University, Hyderabad- 500 030, Telangana, India.
J. Arunakumari,
Department of Biochemistry, Professor Jayashankar Telangana State
Agricultural University, Hyderabad- 500 030, Telangana, India.
Please see the link here: https://stm.bookpi.org/RHST-V6/article/view/11338
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